professor joseph n. grima bsc(melit.), phd(exon.) · curriculum vitae – joseph n grima 2...

Curriculum Vitae – Joseph N Grima

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Professor Joseph N. Grima BSc(Melit.), PhD(Exon.)

Work Address: Faculty of Science, University of Malta, Msida MSD 2080, Malta. Tel: +356 23402274 / +356 79049865 e-mail: [email protected] www: https://www.um.edu.mt/profile/josephgrima

Appointments: July 2010 – present: Co-ordinator, Metamaterials Unit, Faculty of Science, University of Malta Dec 2000 – present Resident Academic, Dept. of Chemistry, Faculty of Science, University of Malta (Professor since March 2009) Nov. 1999 – Nov. 2000: Research Fellow, Dept. of Engineering, University of Exeter, UK. Other Appointments: Mar. 2012 – May 2012: Visiting Professor, Institute of Physics, University of Zielona Góra, Poland July 2010 - present: Representative of Malta on the DC of the Chemistry and Molecular Sciences COST domain Jan 2009 - present: Representative of Malta on the EU High Level Group on Nanoscience and Nanotechnologies. Jan. 2001 – present: Honorary University Fellow, Dept. of Engineering, University of Exeter, UK. Professional Qualifications:

FRSC, C.Chem., C.Sci. Fellow of the Royal Society of Chemistry (UK) Chartered Chemist, Chartered Scientist

MInstP, C.Phys. Member of the Institute of Physics (UK) Chartered Physicist

MIMA, C.Math. Member of the Institute of Mathematics and its Applications (UK), Chartered Mathematician

Education: 1996 – 1999: PhD in Engineering, University of Exeter, UK.

Graduation: July 2000 (Thesis approved without correction.)

Thesis: New Auxetic Materials, Vol. 1 & 2.

1993 – 1996: BSc in Chemistry and Mathematics, University of Malta.

Graduation: November 1996, Summa cum Laude (Category I)

1984 – 1996: Secondary School & Sixth Form student, St. Aloysius College, Malta.


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Research: Main research interest is on thermo-mechanical metamaterials in particular systems with negative mechanical or thermal properties. These include system with a negative Poisson's ratios (auxetic), i.e. materials and structures which become wider when stretched and thinner when compressed; systems with a negative thermal expansion coefficient (NTE), i.e. systems which get smaller when heated and expand when cooled, and systems exhibiting negative compressibility, i.e. systems which expand rather than contract when subjected to an increase in the external hydrostatic pressure. The research entails the modelling and simulation of the mechanical and thermal properties of materials in an attempt to discover or design materials with these unusual properties. Several new auxetic nano/micro/macrostructures have been invented and explored in detail. Particularly interesting results include the discovery of negative Poisson’s ratios in the zeolite class of materials, the design of various networked polymeric auxetics and, the development of models for predicting the mechanical properties of auxetic foams and of microporous polymers. These discoveries have some very important technical implications (e.g. the discovery of negative Poisson’s ratios in zeolites opens many new possibilities towards the use of zeolites as tuneable filters). Other work includes experimental work which resulted in a new manufacture method for making auxetic foams, studies on structures exhibiting anomalous behaviour when subjected to temperature or pressure changes and the discovery of a new reversible method for the manufacture of auxetic foams through a chemo-mechanical process. Research in this field has led to the publication of scientific articles in leading journals such as Proc. Roy. Soc. A, J. Applied Physics, Chemical Communications, Journal of Materials Chemistry, Advanced Materials and Acta & Scripta Materialia (Full list below.) The work has been nationally and internationally recognised:

o Publications include papers in major international scientific journals; o Listed as co-inventor in three patent applications; o Work featured on the front-cover of the July 2009 issue of Advanced Engineering Materials. o Work reviewed in leading international scientific press, including Science, New Scientist and

Materials World; o Papers have been selected as ‘Hot papers’ by RSC journals (Chemical Communications and the

Journal of Materials Chemistry). o Research work showcased by the Commerce Division at the Malta Annual National Trade Fair held

in June/July 2009 at Ta’ Qali. o Research papers cited by various international authors and leading experts in the field; o Hosted and co-organised various international meetings and conferences. These meetings attracted

more than a hundred attending participants to Malta from various countries including Belgium, Belarus, Brazil, China, Italy, Japan, Korea, Malta, Poland, Russia, UK, and USA.

o Received invitations to present papers at leading international conferences, seminars for various leading European companies and universities (e.g. Henkel KGaA, Germany, UCL & University of Cambridge, UK) as detailed below;

o Participant in a major EU FP6 funded project (CHISMACOMB – Total value of the project: 3 million Euros; University of Malta component: approx. € 250,000) and various major nationally funded projects;

o Acted as supervisor / advisor on various MSc and PhD dissertations and theses; o Appointed as reviewer for research papers by various international scientific journals including:

Applied Physics Letters, Journal of Materials Science, Physica Status Solidi B, Advanced Engineering Materials, Journal of Mechanics - A/Solids, Comp. Sci. Tech., Thermochimica Acta, Journal of Vibration and Acoustics, etc.

Also appointed by the Council of the University of Malta as the Co-ordinator of the Metamaterials Unit, an independent Unit set up in 2010 operating directly under the auspices of the Faculty of Science. This Unit hosts the research group on Auxetics and Related Systems, which group was set up with my appointment with the University of Malta and is now one of the leading international teams working in this field. The group currently comprises of two Research Assistants and a number of undergraduate and post-graduate students (MSc / PhD).


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Membership of Conference Committees & Conference Organisational Activities:

o Member of the Scientific Committee of the 9th International Workshop on Auxetics and Related Systems, Bolton, UK, September 2012.

o Member of the Scientific Committee and Co-Chairman of the 8th International Workshop on Auxetics and Related Systems, Szczecin, Poland, September 2011.

o Member of the Scientific Committee of the Materials with Negative Properties Symposium organised as part of the 10th International Materials Research Society (MRS) Brazil, September 2011.

o Member of the Scientific Committee and Co-Chairman of the 8th International Workshop on Auxetics and Related Systems, Poland, September 2011.

o Member of the Scientific Committee of the 8th International Workshop on Functional and Nanostructured Materials, FNMA’11, Poland, September 2011.

o Host, Member of the Scientific Committee and Co-Chairman of the 7th International Workshop on Functional and Nanostructured Materials, FNMA’10, Malta, 16-20 July 2010., Malta, July 2010.

o Host, Co-Chair of the Scientific Committee and Session Chair of the 3rd Conference and 7th International Workshop on Auxetics and Related Systems, Malta, July 2010.

o Co-Host, Member of the Scientific Committee and Co-Chairman of The International Symposium Trends in Continuum Mechanics, TRECOP 2010, Malta, July 2010.

o Member of the Scientific Committee of 5th International Conference on Physics of Disordered Systems, PDS 2010, Gdansk-Sobieszewo, Poland, May 2010.

o Member of the Scientific Committee and Co-Chair of the 6th International Workshop on Auxetics and Related Systems, Bolton, September 2009.

o Member of the Scientific Committee and Session Chair of the 2nd Conference and 5th International Workshop on Auxetics and Related Systems, Bristol, UK, September 2008.

o Host, Member of the Scientific Committee and Co-Chairman of 4th International Workshop on Auxetics and Related Systems, Malta, September 2007.

o Member of the Scientific Committee of the First International Conference and 3rd Workshop on Auxetics and Anomalous Systems, Exeter, 2006.

o Coordinator of the local National Chemistry Symposia (2002, 2004, 2006, 2008 and 2010); International Public Awareness / Press Activities:

o Interviewed by Patrick Walter from Chemistry and Industry (Published by the UK Society of Chemical Industry) for a feature on Negative Compressibility, Feb. 2011.

o Interviewed by Stuart Gary, Reporter for the Australian Broadcasting Corporation for a feature on Negative Compressibility, February 2011.

o Interviewed by Phil Berardelli, Journalist from the Science for a feature on Auxetic Materials, August 2010.

o Interviewed by Martin Grolms, Writer for Materials Views (Wiley Inc.) for a feature on Auxetic Perforated Sheets, August 2010.

o Interviewed by Liz White, Editor of Urethanes Technology International for a feature on Auxetic Foams, August 2009.

o Interviewed by Massimo Sabbatucci, CORDIS focus Editor for a feature on the EU CORDIS Newsletter on Negative Thermal Expansion, May 2007.

o Interviewed by Rupal Mehta, Reporter for Materials World (Published by the UK Institute for Materials, Minerals and Mining) for a feature on Negative Thermal Expansion, April 2007.

o Interviewed by Tom Simonite, Journalist from New Scientists for a Feature on Negative Thermal Expansion, March 2007.


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National Public Awareness / Press Activities:

o Featured on a half-hour programme in the series Laboratorji aired on the National Television Channel TVM in 2010.

o Featured on a half-hour programme in the series Xjenza-TV aired on the National Television Channel TVM in 2008.

o Featured on several news articles on national newspapers including articles published on the Times of Malta and the Sunday Times of Malta on 11-Feb-2011, 30-Dec-2010, 08-Aug-2010, 30-Apr-2010, 02-Aug-2009, 01-Arp-2007, 29-Nov-2007, 23-May-2004, 21-Dec-2003.

Editorial Activities:

o Currently co-editing a Special Issue on negative materials of Physica Status Solidi b (to be published in 2012);

o Currently co-editing a Special Issue of Materials Science – Poland on Functional Nanomaterials (to be published in 2012);

o Co-editor (with Professor Krzysztof Wojciechowski, Polish Academy of Sciences) of a Special Issue on negative materials of Physica Status Solidi b (Nov. 2008, ISSN: 0370-1972);

o Editor of Xjenza – Journal of the Malta Chamber of Scientists since 2005 (ISSN: 1818-7269); o Founding Editor of the new International Journal of Novel Materials (new journal); o Editor of the Book of Abstracts of 1st, 2nd, 3rd, 4th and 5th Malta National Chemical Symposia (ISBN:

999932-628-0-3, 99932-628-1-1, 99932-628-2-X, 978-99932-628-3-1, 978-99932-0-967-6); o Co-Editor (with Prof. Andrew Alderson and Dr Kim Alderson) of publication marking the Launch of the

Auxetic Materials Network (ISBN: 99909-53-02-1). Grants:

1. R & I 2011: Coordinator of the project ‘Stent – manufacture, architecture, research, treatment (SMART

STENTS)’. Value Awarded: €160,555. 2. CoNan 2009, 2010, 2011: A partner in the EU funded Intensive Programme in Computational

Nanotechnology. 3. R & I 2008: Coordinator of the project ‘Manufacture, modelling and testing of foams, with particular

emphasis on a new manufacturing method for the production of 'value-added' auxetic foams’ which was ranked first in the selection procedure. Value Awarded: € 140,000.

4. R & I 2006: A partner in the project ‘Application of Copper Carbon Nanofribre Composites in the

Thermal Management of Solid State Relays and Power Modules - C-Cu Thermbase’. Value: € 19,000. 5. RTDI 2004 Project: Coordinator of one of the largest locally funded research projects - ‘Modelling of

Materials with Unusual Mechanical and Thermal Properties’. Value awarded to the University of Malta: € 67,000)

6. CHISMACOMB Project: A partner in the EU FP6 Programme Specific Targeted Research Programme

Grant (STRP 013641) to investigate a ‘Chiral Smart Honeycomb’, 2004. (Total value: € 3,000,000; Value of component to the University of Malta: approx. € 250,000)

7. AUXETNET Network: Academic Collaborator in the UK EPSRC grant (GR/S13064/01) to develop an

‘Auxetic Materials Network’, 2002. (Value awarded to network: € 250,000).


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Invited Lectures / Seminars / Papers, etc.:

[1] J.N. Grima, Materials and structures with anomalous 'negative' thermo-mechanical behaviour, Invited Lecture at the X Brazilian MRS Meeting, Gramado, Rio Grande do Sul, Brazil, 25-29 September 2011.

[2] J.N. Grima, R. Gatt, D. Attard, A.R. Casha, R. Cauchi, C. Zerafa, R. Caruana Gauci, B. Ellul, A. Buttigieg, M. Camilleri, M. Zammit, E. Manicaro and E. Chetcuti, Recent Developments in Materials and Structures Exhibiting Neagtive Behaviour, Invited Lecture at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011.

[3] J.N. Grima, Modelling of Thermo-Mechanical Metamaterials, Invited Lecture delivered at the 2011 Computational Nanotechnology Intensive Programme (CoNan 2011, EU Life-Long Learning Programme), Gdansk (Poland), August 2011.

[4] J.N. Grima, On Auxetics and Thermo-Mechanical Metamaterials, Invited Paper at the Nanometa 2011 Conference, Seefeld (Austria), 3-6 January 2011.

[5] J.N. Grima, B. Ellul, D. Attard, R. Gatt, E. Chetcuti, E. Manicaro, M. Camilleri and T. Debono, Auxetic

Foams and Models, 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[6] J.N. Grima, Thermo-mechanical Metamaterials, 7th International Workshop on Functional and

Nanostructured Materials, FNMA’10, Malta, 16-20 July 2010.

[7] J.N. Grima, Auxetic Materials, Invited Lecture at the Physics of Disordered System ’10 Conference, Gdansk (Poland) 23-27 May 2010.

[8] J.N. Grima, Auxetic Metamaterials, Invited Lecture delivered at the 2010 Computational

Nanotechnology Intensive Programme (CoNan 2010, EU Life-Long Learning Programme), Gdansk (Poland), August 2010.

[9] J.N. Grima, Auxetic Metamaterials: Materials with a Negative Poisson’s Ratio, Invited Lecture

delivered at the Metamaterials European Summer Campus, Strasbourg (France), June-July 2010. [10] J.N. Grima, Auxetic Foam Materials, Invited Keynote Paper delivered at the 6th International

Workshop on Auxetics and Related Systems, Bolton (UK), September 2009.

[11] J.N. Grima, Recent advances in non-conventional systems, Invited Keynote Lecture delivered at the 6th International Workshop on Functional Materials FNMA'09, Sulmona / L’Aquila (Italy), September 2009.

[12] J.N. Grima, Modelling of Auxetic Materials, Invited Lecture delivered at the 2009 Computational

Nanotechnology Intensive Programme (CoNan 2009, EU Life-Long Learning Programme), Gdansk (Poland), August 2009.

[13] J.N. Grima, R. Gatt, R.N. Cassar, B. Ellul, L. Farrugia, D. Attard, Negative Systems Under Pressure,

Invited Paper presented at the 5th International Workshop on Auxetics and Related Systems, Bristol (UK), September 2008.

[14] J.N. Grima, R. Gatt, D. Attard and R.N. Cassar, Negative Materials and Structures, Invited Lecture

presented at the 5th International Conference on Functional and Nanostructured Materials, Lviv, Ukraine, September 2008.


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[15] J.N. Grima, Auxetic and other negative systems, Seminar presented at the Department of Chemistry, University College London, UK, March 2008.

[16] J.N. Grima, Creating an enabling environment for research at the University, Oration delivered at the

University of Malta graduation ceremony, Valletta Malta, November 2007.

[17] J.N. Grima, Negative, negative and more negative: Systems exhibiting negative Poisson’s ratio, Negative Thermal Expansion and/or Negative Compressibility, Key-Note Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007.

[18] J.N. Grima, Some recent developments on systems exhibiting negative behaviour, Invited Lecture

presented at the 4th International Workshop on Functional Materials FNMA'07, Gdansk, Poland, September 2007.

[19] J.N. Grima, Auxetics materials - The more you stretch them, the fatter they become, Seminar

presented at the Melville Laboratory, Department of Chemistry, University of Cambridge, UK, June 2006.

[20] J.N. Grima, R. Gatt, P.S. Farrugia, A. Alderson and K.E. Evans, Auxetic cellular materials and

structures, Invited Paper presented at the ASME International Mechanical Engineering Congress Proceedings, November 2005.

[21] J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, On rotating ‘rigid’ and ‘semi-rigid’ units and their

potential for auxetic behaviour, Invited Lecture presented at the 2nd Workshop on Auxetic and Related Systems, Poznan, Poland, August 2005.

[22] J.N. Grima, Auxetic Materials: Recent Advances, Invited Keynote Contribution at AUXETNET’s

Second Annual Young Researchers Forum, Cambridge (UK), March 2005.

[23] J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, Auxetic behaviour for rotating rigid units, Invited Lecture presented at the 1st Workshop on Auxetic and Related Systems, Poznan, Poland, June 2004.

[24] J.N. Grima, Molecular level auxetic materials, Invited Key-Note Paper presented at the AUXETNET’s

First Annual Young Researchers Forum, Bolton, UK, April 2004. [25] J.N. Grima, Auxetic materials, Seminar presented at the Department of Engineering, University of

Exeter, UK, 1999.

Patents:

[1] J.N. Grima, A.R. Casha and R. Gatt, Stents with Zero Poisson's ratio cells, Malta Patent filed on 6 Sept 2011.

[2] J.N. Grima, R. Gatt, P.S. Farrugia, V. Zammit and D. Attard, Systems with adjustable properties including negative Poisson’s ratios, negative compressibility and negative thermal expansion, including systems made from rods / ligaments which bend when subjected to a change in pressure. Malta Patent No. 4191 filed on 4 Sept 2007.

[3] J.N. Grima, D. Attard and R. Gatt, A novel process for the manufacture of auxetic foams and for the

conversion of auxetic foam to conventional foam. Malta Patent No. 4236. Priority Date: 30 Oct 2008.

[4] J.N. Grima, L. Oliveri, D. Attard, R. Gatt, B. Ellul, G. Cicala and G. Recca, Costruzione multistrato per l’ottenimento di dispositivi con coefficiente di espansione termica controllabile [Multilayered construct for controlling the thermal expansion coefficient]. Patent filed in Italy, 2010.


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Book Chapters:

[1] J.N. Grima, R. Gatt, V. Zammit, R. Cauchi and D. Attard, On the negative Poisson’s ratios and thermal expansion in Natrolite, Industrial Applications of Molecular Simulations, (2011) ISBN: 978-1439861011, Editor: Marc Meunier.

[2] J.N. Grima, R. Gatt, D. Attard and R. Cassar, Molecular-Level Deformations in Auxetic Organic

Networked Polymers, Contemporary Science of Polymeric Materials, ACS Symposium Series, Vol. 1061, American Chemical Society, 2010, Chapter 13, p 197-214, ISBN: 978-0841226029

[3] *J.N. Grima, Auxetic Materials, In McGraw-Hill Yearbook of Science & Technology (2009) p. 41-44.

ISBN: 978-0071605625.

Publications: (a) Articles in Refereed Journals:

[1] A.R. Casha, A. Manché, M. Gauci, M.T. Camilleri-Podesta, P. Schembri-Wismayer, Z. Sant, R. Gatt,

and J.N. Grima, Placement of trans-sternal wires according to an ellipsoid pressure vessel model of sternal forces, Interactive Cardiovascular and Thoracic Surgery 2011; doi:10.1093/icvts/ivr108

[2] J.N. Grima, E. Chetcuti, E. Manicaro, D. Attard, M. Camilleri, R. Gatt and K.E. Evans, On the auxetic properties of generic rotating rigid triangles, Proc. R. Soc. A, (in print) doi:10.1098/rspa.2011.0273.

[3] J.N. Grima, D. Attard, B. Ellul and R. Gatt, An improved analytical model for the elastic constants of auxetic and conventional hexagonal honeycombs, Cellular Polymers, 30 (2011) 277-300.

[4] J.N. Grima, D. Attard, R. Caruana-Gauci and R. Gatt, Negative linear compressibility of hexagonal

honeycombs and related systems, Scripta Mater, 65 (2011) 565-568.

[5] J.N. Grima, D. Attard, R. Gatt, Unusual Thermoelastic Properties of Methanol Monohydrate, Science, 331 (2011) 687-688.

[6] †J.N. Grima, E. Manicaro and D. Attard, Auxetic behaviour from connected different-sized squares and

rectangles, Proc. Roy. Soc. A., 467 (2011) 439-458.

[7] N. Gaspar, C.W. Smith, A. Alderson, J.N. Grima and K.E. Evans, A Generalised Three-Dimensional Tethered-Nodule Model for Auxetic Materials, J. Mater. Sci., 2011, 46 (2011) 372-384.

[8] J.N. Grima, N. Ravirala, R. Galea, B. Ellul, D. Attard, R. Gatt, A. Alderson, J. Rasburn and K.E. Evans, Modelling and testing of a foldable macrostructure exhibiting auxetic behaviour, Phys. Stat. Sol. b, 248 (2011) 117-122.

[9] D. Attard and J.N. Grima, Modelling of hexagonal honeycombs exhibiting zero Poisson's ratio, Phys. Stat. Sol. b, 248 (2011) 52-59.

* McGraw-Hill Yearbook of Science & Technology represents ‘an annual roundup of the amazing breakthroughs in science and technology … with 150 articles written by international leaders in their respective fields’. † Paper Reviewed by the web portal of Science magazine.


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[10] J.N. Grima and D. Attard, Molecular networks with a near zero Poisson's ratio, Phys. Stat. Sol. b, 248 (2011) 111-116.

[11] R. Gatt, D. Attard, E. Manicaro, E. Chetcuti and J.N. Grima, On the effect of heat and solvent exposure on the microstructure properties of auxetic foams: A preliminary study, Phys. Stat. Sol. b, 248 (2011) 39-44.

[12] J.N. Grima and R. Gatt, On the behaviour of natrolite under hydrostatic pressure, J. Non Cryst. Solids, 356 (2010) 1881-1887.

[13] J.N. Grima, R.Gatt, B. Ellul and E. Chetcuti, Auxetic behaviour in non-crystalline materials having star

or triangular shaped perforations, J. Non Cryst. Solids, 356 (2010) 1980-1987.

[14] D. Attard and J.N. Grima, Modelling of hexagonal honeycombs exhibiting zero Poisson's ratio, Phys.

Stat. Sol. b, 248 (2011) 52-59.

[15] J.N. Grima and D. Attard, Molecular networks with a near zero Poisson's ratio, Phys. Stat. Sol. b, 248 (2011) 111-116.

[16] R. Gatt, D. Attard, E. Manicaro, E. Chetcuti and J.N. Grima, On the effect of heat and solvent exposure

on the microstructure properties of auxetic foams: A preliminary study, Phys. Stat. Sol. b, 248 (2011) 39-44.

[17] J.N. Grima, L. Oliveri, D. Attard, B. Ellul, R. Gatt, G. Cicala and G. Recca, Hexagonal honeycombs with

zero Poisson’s ratios and enhanced stiffness, Adv. Engin. Mater., 12 (2010) 855-862.

[18] J.N. Grima, B. Ellul, D. Attard, R. Gatt and M. Attard, Composites with needle-like inclusions exhibiting negative thermal expansion: A preliminary investigation, Comp. Sci. Tech., 70 (2010) 2248-2252.

[19] J.N. Grima, L. Oliveri, B. Ellul, R. Gatt, D. Attard, G. Cicala and G. Recca, Adjustable / Negative

Thermal Expansion from Multilayered Systems, Phys. Stat. Sol. RRL, 4 (2010) 133-135. [20] J.N. Grima and R. Gatt, Perforated sheets exhibiting negative Poisson’s ratios, Adv. Engin. Mater., 12

(2010) 460-464. [21] Alderson, K.L. Alderson, D. Attard, K.E. Evans, R. Gatt, J.N. Grima, W. Miller, N. Ravirala, C. W. Smith

and K. Zied, Elastic constants of 3-, 4- and 6- connected chiral and antichiral honeycombs subject to uniaxial in-plane loading, Comp. Sci. Tech. 70 (2010) 1042-1048.

[22] ‡J.N. Grima, D. Attard, R. Gatt and R.N. Cassar, A novel process for the manufacture of auxetic foams

and for their reconversion to conventional form, Adv. Eng. Mater. 11 (2009) p. 533-535. [23] B. Ellul, M. Muscat and J.N. Grima, On the effect of the Poisson’s ratio (positive and negative) on the

stability of pressure vessel heads, Phys. Stat. Sol. B, 246 (2009) p.2025-2032.

[24] D. Attard, E. Manicaro, R. Gatt and J.N. Grima, On the properties of auxetic rotating stretching squares, Phys. Stat. Sol. B, 246 (2009) p.2045-2054.

[25] D. Attard, E. Manicaro, and J.N. Grima, On rotating rigid parallelograms and their potential for

exhibiting auxetic behaviour, Phys. Stat. Sol. B, 246 (2009) p.2033-2044.

‡ Work featured on the front cover of the July issue of Adv. Eng. Materials and also reviewed by Urethanes Technology International magazine which is widely recognised as the most authoritative source of information on developments in the global polyurethanes industry.


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[26] J.N. Grima, R.N. Cassar and R. Gatt, On the effect of hydrostatic pressure on the auxetic character of NAT-type silicates, J. Non-Cryst. Sol. 355 (2009) p.1307-1312.

[27] J.N. Grima, R. Gatt and B. Ellul, A finite element study on the potential for negative thermal expansion

and negative compressibility of triangular building blocks, J. Chinese Ceramic Soc. 37 (2009) p.743-748.

[28] R. Gatt, D. Attard, J.N. Grima, On the behaviour of bi-material strips when subjected to changes in

external hydrostatic pressure, Scripta Materialia, 60 (2009) p. 65-67. [29] J.N. Grima, D. Attard, R.N. Cassar, L. Farrugia, L. Trapani and R. Gatt, On the mechanical properties

and auxetic potential of various organic networked polymers, Molecular Simulation, 34 (2008) p. 1149 – 1158.

[30] J.N. Grima, D. Attard and R. Gatt, Truss-type systems exhibiting negative compressibility, Phys. Stat.

Sol. (b) , 245 (2008) p. 2405-2414. [31] D. Attard and J.N. Grima, Auxetic Behaviour from rotating rhombi, Phys. Stat. Sol. (b), 245 (2008) p.

2395-2404.

[32] J.N. Grima, P.S. Farrugia, C. Caruana, R. Gatt and D. Attard, Auxetic behaviour from stretching connected squares, J. Mater. Sci., 34 (2008) p. 5962-5971.

[33] R. Gatt and J.N. Grima, Negative Compressibility, Phys. Stat. Sol. RRL, 2 (2008) p. 236-238.

[34] J.N. Grima, V. Zammit, R, Gatt, D. Attard, C. Caruana and T.G. Chircop Bray, On the role of rotating

tetrahedra for generating auxetic behaviour in NAT and related systems, J. Non-Cryst. Sol., 354 (2008) p. 4214-4220.

[35] J.N. Grima, R. Gatt and P.S. Farrugia, On the properties of auxetic meta-tetrachiral structures, Phys.

Stat. Sol. (b), 245 (2008) p. 511-520. [36] R. Gatt, V. Zammit, C. Caruana and J.N. Grima, On the atomic level deformations in the auxetic zeolite

natrolite, Phys. Stat. Sol. (b), 245 (2008) p. 502-510. [37] J.N. Grima, P.S. Farrugia, R. Gatt and D. Attard, On the auxetic properties of rotating rhombi and

parallelograms: A preliminary investigation, Phys. Stat. Sol. (b), 245 (2008) p. 521-529. [38] § J.N. Grima, P.S. Farrugia, R. Gatt and V. Zammit, A system with adjustable positive or negative

thermal expansion, Proc. Royal. Soc. A., 463 (2007) p. 1585–1596.

[39] J.N. Grima, J.J. Williams, R. Gatt, V. Zammit, A. Alderson, R.I. Walton and K.E. Evans, Natrolite: A zeolite with negative Poisson’s ratios, J. Appl. Phys., 101 (2007) 086102.

[40] J.N. Grima, P.S. Farrugia, R. Gatt and V. Zammit, Connected triangles exhibiting negative Poisson’s

ratios and negative thermal expansion, J. Phys. Soc. Jpn., 76 (2007) 025001.

[41] J.N. Grima, V. Zammit, R. Gatt, A. Alderson and K.E. Evans, Auxetic behaviour from rotating semi-rigid units, Phys. Stat. Sol. (b), 244 (2007) p. 866-882.

[42] J.N. Grima, V. Zammit and R. Gatt, Negative Thermal Expansion, Xjenza - Journal of the Malta

Chamber of Scientists, 11 (2006) p. 17-29.

§ New Scientist reported this article as ‘Breaking News’ (NewScientist.com, Triangular strut system 'shrinks' in the heat, 29-March-2007, dn11494). Article was also reviewed by Materials World (Feeling the heat, May 2007) and by the EU Focus newsletter. This article also attracted considerable local attention.


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[43] J.N. Grima, R. Gatt, N. Ravirala, A. Alderson and K.E. Evans, Negative Poisson’s ratios in cellular

foam materials, Mater. Sci & Eng. A, 423 (2006) p. 214-218. [44] J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, An alternative explanation for the negative Poisson’s

ratios in alpha-cristobalite, Mater. Sci & Eng. A, 423 (2006) p. 219-224.

[45] J.N. Grima and K.E. Evans, Auxetic behaviour from rotating triangles, J. Mater. Sci., 41 (2006) p. 3193 - 3196.

[46] J.N. Grima, R. Gatt, V. Zammit, A. Alderson and K.E. Evans, On the suitability of empirical models to

simulate the mechanical properties of alpha-cristobalite, Xjenza - Journal of the Malta Chamber of Scientists, 10 (2005) p. 24-31.

[47] J.N. Grima, R. Gatt, T.G. Chircop Bray, A. Alderson and K.E. Evans, Empirical Modelling Using

Dummy Atoms (EMUDA): An alternative approach for studying ‘auxetic’ structures, Molecular Simulation, 31 (2005) p. 915-924.

[48] J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, On the potential of connected stars as auxetic

systems, Molecular Simulation, 31 (2005) p. 925-935.

[49] J.N. Grima, J.J. Williams, R. Gatt and K.E. Evans, Modelling of auxetic networked polymers built from calix[4]arene building blocks, Molecular Simulation, 31 (2005) p. 907-913.

[50] A. Alderson, P.J. Davies, K. E. Evans, K.L. Alderson and J.N. Grima, Modelling of the mechanical and

mass transport properties of auxetic molecular sieves: an idealised inorganic (zeolitic) host-guest system, Molecular Simulation, 31 (2005) p. 889-896.

[51] A. Alderson, P.J. Davies, M.R. Williams, K.E. Evans, K.L. Alderson and J.N. Grima, Modelling of the

mechanical and mass transport properties of auxetic molecular sieves: an idealised organic (polymeric honeycomb) host-guest system, Molecular Simulation, 31 (2005) p. 897-905.

[52] J.N. Grima, J.J. Williams and K.E. Evans, Networked calix[4]arene polymers with unusual mechanical

properties, Chem. Comm., (2005) p. 4065-4067. [53] ** J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, On the origin of auxetic behaviour in the silicate

alpha-cristobalite, J. Mater. Chem., 15 (2005) p. 4003 – 4005. [54] J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, On the auxetic properties of ‘rotating rectangles’ with

different connectivity, J. Phys. Soc. Jpn., 74 (2005) p. 2866-2867. [55] N. Gaspar, X.J. Ren, J.N. Grima, C.W. Smith and K.E. Evans, Novel honeycombs with Auxetic

behaviour, Acta Materialia, 53 (2005) p. 2439-2445. [56] J.N. Grima, A. Alderson and K.E. Evans, An alternative explanation for the negative Poisson's ratios in

auxetic foams, J. Phys. Soc. Jpn., 74 (2005) p. 1341-1342.

[57] J.N. Grima, A. Alderson and K.E. Evans, Auxetic behaviour from rotating rigid units, Phys. Stat. Sol. (b), 242 (2005) p. 561-575.

[58] A. Alderson, K.L. Alderson, K.E. Evans, J.N. Grima, M. Williams and P.J. Davies, Modelling the

deformation mechanisms, structure-property relationships and applications of auxetic nanomaterials, Phys. Stat. Sol. (b), 242 (2005) p. 499–508.

** Selected as Hot Paper by the editors of Journal of Materials Chemistry.


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[59] A. Alderson, K.L. Alderson, K.E. Evans, J.N. Grima and M. Williams, Modelling of negative Poisson’s

ratio nanomaterials: deformation mechanisms, structure-property relationships and applications, Journal of Metastable & Nanocrystalline Materials, 23 (2005) p. 55-58.

[60] J.N. Grima, A. Alderson and K.E. Evans, Negative Poisson’s ratios from rotating rectangles,

Computational Methods in Science & Technology, 10 (2004) p. 137-145.

[61] A. Alderson, K.L. Alderson, K.E. Evans, J.N. Grima, M.R. Williams, and P.J. Davies, Molecular modelling of the deformation mechanism acting in auxetic silica, Computational Methods in Science & Technology, 10 (2004) p. 117-126.

[62] A. Alderson, J. Rasburn, K.E. Evans and J.N. Grima, Auxetic polymeric filters display enhanced de-

fouling and pressure compensation properties, Membrane Technology, 137 (2001) p. 6-8. [63] J.N. Grima, R. Jackson, A. Anderson and K.E. Evans, Do zeolites have negative Poisson's ratios?,

Adv. Mater., 12 (2000) p. 1912-1918.

[64] C.W. Smith, J.N. Grima and K.E. Evans, A novel mechanism for generating auxetic behaviour in reticulated foams: Missing rib foam model, Acta Materialia, 48 (2000) p. 4349-4356.

[65] †† J.N. Grima and K.E. Evans, Rotating squares with negative Poisson's ratios, J. Mat. Sci. Lett., 19

(2000) p.1563-1565. [66] ‡‡ J.N. Grima and K.E. Evans, Self expanding networks, Chem. Comm., (2000) p.1531-1532.

(b) Full papers in Refereed Conference Proceedings:

[67] J.N. Grima, R. Gatt, P.S. Farrugia, A. Alderson and K.E. Evans, Auxetic cellular materials and

structures, ASME International Mechanical Engineering Congress Proceedings (2005). [68] J.N. Grima and A.J. Vella, Adequacy of pre-university mathematics curriculum as a preparation for a

tertiary education in the sciences, Proceedings of the International CASTME Conference, Malta, April 2002.

[69] J.N. Grima and K.E. Evans, Networked polymers with negative Poisson's ratios, ACS Polymeric

Materials Science & Engineering Preprints, 83 (2000) p. 367-368.

[70] C.W. Smith, J.N. Grima, B.D. Caddock, R.J. Wootton and K.E. Evans, Microstructures producing negative Poisson's ratios: Experiment and models, SEM Theoretical, Experimental and Computational Mechanics Preprints (1999) p.184-187.

†† Reviewed by the Philadelphia section of the Society of Plastics Engineers, USA, in Philadelphia Plastics

Press, Nov. 2000 - "... this paper describes how an arrangement of squares can lead to auxetic behaviour. ... I expect to see several new patents from the Philadelphia Section members two to ten years from now because of this important revelation."

‡‡ Selected as Hot Paper by the editors of Chemical Communications.


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(c) Papers accepted/presented at conferences, etc.:

[71] J.N. Grima, On the Auxeticity of Zeolites and Aluminophosphates, Paper presented at the X Brazilian

MRS Meeting, Gramado, Rio Grande do Sul, Brazil, 25-29 September 2011. [72] J.N. Grima and A.C. Griffin, Modelling of liquid crystalline polymers with anomalous mechanical

properties, Paper presented at the X Brazilian MRS Meeting, Gramado, Rio Grande do Sul, Brazil, 25-29 September 2011.

[73] D. Attard and J.N. Grima, Recent Developments on Auxetic Foams, Paper presented at the Sixth

National Chemistry Symposium, Malta, 10th December 2011. [74] R. Caruana Gauci and J.N. Grima, On Three-Dimensional Cellular Structures Exhibiting Negative

Mechanical Properties, Paper presented at the Sixth National Chemistry Symposium, Malta, 10th December 2011.

[75] R. Gatt, D. Gambin, R. Cauchi and J.N. Grima, A Preliminary Study on the Mechanical Properties of

Ceramic Type Frameworks, Paper presented at the Sixth National Chemistry Symposium, Malta, 10th December 2011.

[76] R. Gatt, R. Cauchi and J.N. Grima, Carbon Nanotubes and Negative Compressibility, Paper presented

at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011. [77] J.N. Grima, D. Attard, B. Ellul and R. Gatt, Improved Analytical Models for Hexagonal Honeycombs,

Paper presented at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011.

[78] S.B. Bonnici, A. Torpiano, R. Gatt and J.N. Grima, Application of Auxetics to the Built Environment,

Paper presented at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011.

[79] A.R. Casha, M. Gauci, R. Gatt, J.N. Grima, Auxetic biomedical devices, Paper presented at the 8th

Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011. [80] A.R. Casha, R. Gatt and J.N. Grima, The effect of defects and missing connections on the Poisson’s

ratios and other properties of cellular systems with particular reference to their auxetic potential, Paper presented at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011.

[81] A.R. Casha, R. Gatt, M. Gauci and J.N. Grima, On Stent Design and Poisson’s ratios, Paper presented

at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011. [82] R. Gatt, A. Buttigieg and J.N. Grima, The Effect of Solvents on Polyurethane Foams as Applied to

Production of Auxetic Foam, Paper presented at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011.

[83] J.N. Grima, R. Caruana Gauci, D. Attard and R. Gatt, Negative Poisson’s Ratios and Negative

Compressibility in Three Dimensional Structures, Paper presented at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011.

[84] J.N. Grima, M. Zammit, R. Gatt and D. Attard, Negative Poisson’s Ratios in the Aluminophospahte

APD, Paper presented at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011.


13

[85] J.N. Grima, C. Zerafa and A.C. Griffin, Modelling of Liquid Crystalline Polymers with Anomalous Mechanical Properties, Paper presented at the 8th Workshop on Auxetics and Related Systems, Szczecin, Poland, 6-9 September 2011.

[86] J.N. Grima, D. Attard, B. Ellul, R. Cauchi, and R. Gatt, On the properties of composites incorporating

auxetic and non-auxetic systems with particular emphasis on their Poisson’s ratios, Paper presented at the Auxetic Composites and Structures Session, 16th International Conference on Composite Structures, Porto, June 2011.

[87] R. Gatt, R. Cauchi and J.N. Grima, Auxetic Behaviour in α-Cristobalite, Paper presented at the Fifth National Chemistry Symposium, Malta, 27th November 2010.

[88] C. Zerafa and J.N. Grima, Modelling of Potentially Auxetic Liquid Crystalline Polymers, Paper

presented at the Fifth National Chemistry Symposium, Malta, 27th November 2010. [89] D. Attard, J.N. Grima, L. Oliveri, B. Ellul, R. Gatt, G. Cicala and G. Recca, Molecular Honeycombs

Exhibiting Zero Poisson’s Ratio, Paper presented at the Fifth National Chemistry Symposium, Malta, 27th November 2010.

[90] N. Borg, B. Spiteri and J.N. Grima, Modelling of Aluminophosphates: A Study of the Methods and

Forcefields Used in the Simulations of Their Mechanical Properties, Paper presented at the Fifth National Chemistry Symposium, Malta, 27th November 2010.

[91] R. Gatt, D. Attard, E. Manicaro, E. Chetcuti, R. Caruana Gauci, A. Buttigieg and J.N. Grima, On the

Effect of Solvent Exposure and Heating on Auxetic Foams, Paper presented at the Fifth National Chemistry Symposium, Malta, 27th November 2010.

[92] J.N. Grima, E. Chetcuti, E. Manicaro, D. Attard, M. Camilleri and K.E. Evans, Analytical Modelling of

Auxetic Rotating Triangles, Paper presented at the Fifth National Chemistry Symposium, Malta, 27th November 2010.

[93] E. Manicaro, E. Chetcuti and J.N. Grima, On the Strain Dependent Properties of Auxetic Mechanisms,

Paper presented at the The International Symposium on Trends in Continuum Physics, TRECOP 2010, Malta, 16-20 July 2010.

[94] J.N. Grima, D. Attard, L. Oliveri, B. Ellul, R. Gatt, G. Cicala and G. Recca, Modelling of Honeycombs

Exhibiting Zero Poisson’s Ratio, Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[95] J.N. Grima, E. Chetcuti, E. Manicaro, D. Attard, M. Camilleri and K.E. Evans, On the Mechanical

Properties of 2D Models Made from Rigid Rotating Triangles, Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[96] B. Ellul, D. Attard and J.N. Grima, Composites with Needle and Coin Shaped Inclusions Exhibiting

Negative Thermal Expansion, Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[97] B. Ellul and J.N. Grima, On the Use of Auxetic Materials for the Manufacture of Pressure Vessel

Heads, Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[98] R. Gatt, A. Alderson and J.N. Grima, Further Modelling Studies on the Negative Poisson’s Ratios in α-Cristobalite, Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.


14

[99] E.R. Grima, J.N. Grima and J.N. Grima, Out of Plane Auxetic Behaviour as a Result of Perforations in

Thin Structures, Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[100] J.N. Grima, R. Galea, N. Ravirala, B. Ellul, D. Attard, R. Gatt, A. Alderson, J. Rasburn and K.E.

Evans, Modelling and Testing of a Foldable Macrostructure Exhibiting Auxetic Behaviour, 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[101] J.N. Grima, R. Gatt, B. Ellul and E. Chetcuti, Perforated Sheets Exhibiting Auxetic Behaviour,

Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[102] J.N. Grima, E. Manicaro, E. Chetcuti and D. Attard, On the Mechanical Properties of Connected

Rigid Rectangles: a Comprehensive Study, Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[103] C. Zerafa and J.N. Grima, Modelling of LCP-Type Systems Exhibiting Negative Poisson’s Ratios,

Paper presented at the 3rd International Conference and 7th International Workshop on Auxetics and Related Systems, Gozo & Malta, 19-23 July 2010.

[104] B. Ellul, R. Gatt, D. Attard, J. N. Grima, On the Effect of Disorder on the Poisson’s Ratios of

Hexagonal Honeycombs, Paper presented at the Physics of Disordered System ’10 Conference,

Gdansk (Poland) 23-27 May 2010. [105] J.N. Grima, L. Oliveri, D. Attard, R. Gatt, B. Ellul, G. Cicala and G. Recca, New ‘hybrid’ hexagonal

honeycombs exhibiting unusual mechanical properties, Paper presented at the 6th International Workshop on Auxetics and Related Systems, Bolton, UK, Sept. 2009.

[106] J.N. Grima, L. Oliveri, B. Ellul, R. Gatt, D. Attard, G. Cicala and G. Recca, Negative Thermal

Expansion Multilayer Systems, Paper presented at the 6th International Workshop on Auxetics and Related Systems, Bolton, UK, Sept. 2009.

[107] E. Manicaro, D. Attard and J.N. Grima, Auxetic behaviour from rotating different sized polygons,

Paper presented at the 6th International Workshop on Auxetics and Related Systems, Bolton, UK, Sept. 2009.

[108] R. Gatt, R. Cassar, A. Alderson and J.N. Grima, Further studies on the mechanical properties of

auxetic NAT and α-cristobalite, Paper presented at the 6th International Workshop on Auxetics and Related Systems, Bolton, UK, Sept. 2009.

[109] R. Gatt, E. Chetcuti and J.N. Grima, On the effect of temperature on auxetic foams, Paper

presented at the 6th International Workshop on Auxetics and Related Systems, Bolton, UK, Sept. 2009.

[110] J.N. Grima, D. Attard and R. Gatt, On foams exhibiting negative Poisson’s ratio: New manufacturing methods for making auxetic foams and for their re-conversion to conventional form, Paper presented at the 6th International Workshop on Auxetics and Related Systems, Bolton, UK, Sept. 2009.

[111] R. Galea, B. Ellul and J.N. Grima, On the properties of truss-type structures exhibiting anomalous

behaviour, Paper presented at the 6th International Workshop on Auxetics and Related Systems, Bolton, UK, Sept. 2009.


15

[112] J.N. Grima, B. Ellul, D. Attard, R. Gatt and M. Attard, Negative Behaviour By Design: Scale Independent Mechanisms For Generating Negative Behaviour, Paper presented at Euromat 2009 - Symposium B17, Glasgow, UK, Sept. 2009.

[113] M. Attard, Michael Kitzmantel, J.N. Grima and S. Abela, Simultaneous thin film carbon

nanotube/nanofibre metal matrix composite deposition by printing techniques, Paper presented at Euromat 2009 - Symposium B17, Glasgow, UK, Sept. 2009.

[114] J.N. Grima, D. Attard, R. Gatt, Brian Ellul and R.N. Cassar, A novel chemo-mechanical process for

the manufacture of auxetic foams and for their re-conversion to conventional form, Paper presented at ICMAT 2009, Singapore, June 2009.

[115] J.N. Grima, D. Attard, R. Gatt, B. Ellul and E. Manicaro, Scale independent models for generating

negative Poisson’s ratios, negative thermal expansion and/or negative compressibility, Paper presented at ICMAT 2009, Singapore, June 2009.

[116] J.N. Grima, R. Gatt, R. Cassar, D. Attard and V. Zammit, Auxetic nanostructured materials under

pressure, Paper presented at ICMAT 2009, Singapore, June 2009. [117] J.N. Grima, R. Gatt, E. Manicaro, B. Spiteri, D. Attard, R.N. Cassar, B. Ellul and V. Zammit, On the

suitability of two dimensional mechanism based models for modelling the Poisson’s ratio of nano- and micro-structured auxetic and non-auxetic materials, Paper presented at ICMAT 2009, Singapore, June 2009.

[118] J.N. Grima and C. Zerafa, Polymers with laterally attached rods exhibiting negative Poisson's ratio,

Paper presented at the Contemporary Science of Polymeric Materials Symposium, Valletta (Malta), February-March 2009.

[119] J.N. Grima, R. Cassar, L. Farrugia, L. Trapani and D. Attard, Auxetic networked polymers, Paper

presented at the Contemporary Science of Polymeric Materials Symposium, Valletta (Malta), February-March 2009.

[120] D. Attard, and J.N. Grima, Is solid benzene auxetic?, Paper presented at the 4th National

Chemistry Symposium, Msida Malta, November 2008. [121] V. Zammit, R. Gatt and J.N. Grima, Anomalous mechanical and thermal properties in natrolite

single crystals, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[122] J.N. Grima, R.N. Cassar and R. Gatt, On the extent of auxeticity in NAT-type systems at various

hydrostatic pressures, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[123] J.N. Grima and R. Gatt, On the mechanical properties of beta-cristobalite, Paper presented at the

4th National Chemistry Symposium, Msida Malta, November 2008. [124] J.N. Grima, D.Attard, R. Gatt, R.N. Cassar and B. Ellul, A novel and reversible method for the

manufacture of auxetic polyurethane foams, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[125] J.N. Grima, E. Manicaro, B. Spiteri, R.N. Cassar and R. Gatt, On the mechanical properties of the

molecular level ‘VFI’ honeycomb, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.


16

[126] J.N. Grima, L. Farrugia, R.N. Cassar, L. Trapani and D. Attard, A comparative study of organic networked systems with negative Poisson’s ratios, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[127] J.N. Grima, V. Zammit and R. Gatt, Anomalous behaviour in Natrolite, Paper presented at the 5th

International Workshop on Auxetics and Related Systems, Bristol (UK), September 2008. [128] J.N. Grima, R. Gatt and D. Attard, On Constructs Made From Chiral Building Blocks, Paper

presented at the 5th International Workshop on Auxetics and Related Systems), Bristol (UK), September 2008.

[129] J.N. Grima, R. Gatt, D. Attard and B. Ellul, Modelling of flexing metachirals with thin ribs, Paper


[130] D. Attard, R. Gatt and J.N. Grima, An improved analytical model for chiral structures, Paper


[131] R. Gatt, V. Zammit, D. Attard and J.N. Grima, Negative effects in crystalline solids, Paper


[132] B. Ellul, M. Muscat and J.N. Grima, On the potential of auxetic materials for improving the buckling

load resistance, Paper presented at the 5th International Workshop on Auxetics and Related Systems), Bristol (UK), September 2008.

[133] J.N. Grima and, D. Attard, On the auxetic properties of solid benzene, Paper presented at the 4th

International Workshop on Auxetics and Related Systems, Malta, September 2007 (winner of the best paper award).

[134] J.N. Grima, P.S. Farrugia, C. Caruana and R. Gatt, An alternative way for achieving negative

Poisson’s ratio from connected squares: The 'Stretching Squares' Mechanism, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007.

[135] J.N. Grima, P.S. Farrugia, R. Gatt and D. Attard, On the adjustable auxeticity of rotating rhombi

and parallelograms, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007.

[136] R. Gatt, J.N. Grima and P.S. Farrugia, Negative behaviour from bi-Material elements, Paper

presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007. [137] J.N. Grima, V. Zammit, R. Gatt, M. Wood et al., Natrolite: A zeolite with anomalous (negative)

thermal and mechanical properties, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007.

[138] J.N. Grima, R. Gatt and T.G. Chircop Bray, On the properties of rotating rigid tetrahedra having

zeolite-type connectivities, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007.

[139] R. Gatt and J.N. Grima, Ceramics: A new class of auxetic materials? Paper presented at the 4th

International Workshop on Auxetics and Related Systems, Malta, September 2007. [140] J.N. Grima and A. Sparavigna, Phonons in a two-dimensional auxetic lattice, Paper presented at

the 4th International Workshop on Auxetics and Related Systems, September 2007.


17

[141] J.N. Grima and R. Gatt, Statistical techniques as an integral part of first-year chemistry laboratory classes (CHED 455), Paper presented at the 234th National ACS meeting, Boston MA, (USA), August 2007.

[142] J.N. Grima, R. Gatt, and T.G. Chircop Bray, Teaching of force-field based modelling techniques

through EMUDA modelling (CHED410), Paper presented at the 234th National ACS meeting, Boston MA, (USA), August 2007.

[143] J.N. Grima, R. Gatt and V. Zammit, Modeling and experimental work on the auxetic and thermal

properties of the zeolite natrolite (INOR 889), Paper presented at the 234th National ACS meeting, Boston MA, (USA), August 2007.

[144] J.N. Grima, V. Zammit, R. Gatt, M. Wood et al., Zeolites with negative Poisson’s ratios: The effect

of interstitial cations and water molecules on the Poisson’s ratios of NAT, Paper presented at the 5th International Conference on Inorganic Materials 2006, Ljubljana (Slovenia), September 2006.

[145] J.N. Grima, R. Gatt and V. Zammit, On the suitability of commonly used force-fields for simulating

the Poisson's ratios and moduli of single crystalline materials, Paper presented at the 232nd National ACS meeting, San Francisco CA (USA), September 2006.

[146] J.N. Grima, R. Gatt and T.G. Chircop Bray, Modelling of mechanical structures using dummy

atoms and molecular modeling techniques, Paper presented at the 232nd National ACS meeting, San Francisco CA (USA), September 2006.

[147] J.N. Grima, R. Gatt, T.G. Chircop Bray, V. Zammit, A. Alderson and K.E. Evans, Auxeticity and

microscopic rotations of rigid and semi-rigid units in silicates and zeolites, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[148] J.N. Grima, R. Gatt, P.S. Farrugia, N. Ravirala, W. Miller, V. Zammit, T.G. Chircop Bray, F.

Scarpa, A. Alderson, C.W. Smith, K.E. Evans and K. Alderson, On the auxetic potential of 2D networks constructed from chiral building-blocks, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[149] J.N. Grima, V. Zammit, P.S. Farrugia and R. Gatt, On the negative thermal properties of

connected rods, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[150] R. Gatt, P.S. Farrugia and J.N. Grima, Auxetic ‘meta-chiral’ networks, Paper presented at the 1st

International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[151] J.N. Grima, R. Gatt, P.S. Farrugia and K.E. Evans, On the auxetic potential of ‘tetra-chiral’ and

‘anti-tetrachiral’ networks, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[152] J.N. Grima, R. Gatt, P.S. Farrugia, N. Ravirala, A. Alderson, K. Alderson and K.E. Evans, On the

relationship between auxetic ‘rotating polygons’ and ‘chiral’ systems, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[153] F. Nezare, A. Alderson, P. Bullman, P. Davies and J.N. Grima, Modelling of phase transformation

behaviour in anomalous systems, Paper presented at the 1st International Conference on Auxetics and


18

Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[154] N. Ravirala, K.L. Alderson, J.N. Grima and A. Alderson, Linear Elastic in-plane mechanical

properties of trichiral and anti-trichiral honeycombs, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[155] R. Gatt, J.N. Grima, F. Nazarre, A. Alderson and K.E. Evans, On the properties of alpha-

cristobalite, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[156] J.N. Grima, V. Zammit and R. Gatt, Modelling of inorganic single crystalline auxetic materials, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[157] J.N. Grima, B. Spiteri, L. Trapani and K.E. Evans, Organic networked systems with negative

Poisson’s ratios, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[158] J.N. Grima, V. Zammit and L. Trapani, Negative thermal expansion – materials which get smaller when heated, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[159] J.N. Grima, R. Gatt, V. Zammit, T.G. Chircop Bray et al., On negative thermal expansion and

negative poisson’s ratios: converting ‘positive materials’ to ‘negative materials’, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[160] J.N. Grima, T.G. Chircop Bray and R. Gatt, Modelling of self-expanding structures using molecular

modelling techniques (EMUDA) , Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[161] J.N. Grima, R. Gatt, A.C. Bonnici and T.G. Chircop Bray, On dilating connected squares, Paper

presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[162] J.N. Grima, T.G. Chircop Bray and R. Gatt, Rotating ‘dilating non-rigid squares, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[163] J.N. Grima, B. Spiteri and R. Gatt, On the mechanical properties of chlorosodalite, Paper

presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006. [164] F. Nezare, A. Alderson, P. Davies, P. Bullman and J.N. Grima, Modelling the alpha-to-beta phase

change in cristobalite, Paper Presented at the 2nd Workshop on Auxetic and Related Systems, Poznan (Poland), August 2005.

[165] J.N. Grima, R. Gatt, A. Alderson, and K.E. Evans, The deformation mechanisms in the auxetic

mineral alpha-cristobalite, Paper presented at the RSC MC7, Edinburgh, UK, 2005 [166] J.N. Grima, R. Gatt, A. Alderson, and K.E. Evans, On the origin of the negative Poisson’s ratios in

alpha-cristobalite, Paper presented at the ICMAT, Singapore, 2005 [167] J.N. Grima, R. Gatt, N. Ravirala, A. Alderson, and K.E. Evans, Negative Poisson’s ratios in cellular

materials, Paper presented at the ICMAT, Singapore, 2005 [168] J.N. Grima, R. Gatt, A. Vella, A. Alderson, and K.E. Evans, Modelling of alpha-cristobalite using

Molecular Dynamics Simulations, Paper presented at AUXETNET’s Second Annual Young Researchers Forum, Cambridge (UK), March 2005 (winner of the best paper award).


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[169] J.N. Grima, T.G. Chircop-Bray, S.L. Borg-Bonnici, R. Gatt, and K.E. Evans, Modelling of Auxetic Macrostructres using ‘EMUDA Modelling’ Techniques, Paper presented at AUXETNET’s Second Annual Young Researchers Forum, Cambridge (UK), March 2005

[170] I. Mifsud-Bons, J.N. Grima, S. Gatt, Promoting scientific literacy in Malta: A practical perspective,

Paper presented at the European Workshop on The Challenges of EU’ Enlargement on Science Literacy and Development, Malta, January 2005.

[171] J.N. Grima, R. Gatt and K.E. Evans, Modelling of the negative Poisson’s ratios in alpha-

cristobalite, Paper presented at the Fourth International Inorganic Materials Conference, Antwerp (Belgium), September 2004.

[172] J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, Modelling of the auxetic behaviour in alpha-

cristobalite, Paper presented at the 228th National ACS meeting, Philadelphia (USA), August 2004.

[173] R. Gatt and J.N. Grima, Negative Poisson’s Ratios in alpha-cristobalite, Paper presented at AUXETNET’s First Annual Young Researchers Forum, Bolton (UK), April 2004.

[174] B. Spiteri, J.J. Williams, K.E. Evans and J.N. Grima, Auxeticity in calix(4)arene systems, Paper

presented at AUXETNET’s First Annual Young Researchers Forum, Bolton (UK), April 2004.

[175] M. Wood, A. Alderson, K.E. Evans and J.N. Grima, Molecular modelling of auxetic zeolites, Paper presented at the 2nd National Chemistry Symposium, March 2004, Malta.

[176] J.J. Williams, K.E. Evans and J.N. Grima, Molecular modelling of calix(4)arene systems with

unusual mechanical properties, Paper presented at the 2nd National Chemistry Symposium, March 2004, Malta.

[177] B. Spiteri, R. Gatt and J.N. Grima, Materials with negative Poisson's ratios, Paper presented at

the Second National Chemistry Symposium, Msida (Malta), March 2004.

[178] R. Gatt, B. Spiteri and J.N. Grima, Molecular auxetic materials, Paper presented at the Second National Chemistry Symposium, Msida (Malta), March 2004.

[179] J.N. Grima and A.J. Vella, Adequacy of pre-university mathematics curriculum as a preparation for

chemistry undergraduate studies, Paper presented at the 226th ACS National Meeting, New York (USA), September 2003.

[180] J.N. Grima, M. Wood, A. Alderson and K.E. Evans, Zeolites with unusual mechanical properties,

Paper presented at the 226th ACS National Meeting, New York (USA), September 2003. [181] J.N. Grima and A.J.Vella, Adequacy of pre-university mathematics curriculum as a preparation for

a tertiary education in the sciences, Paper presented at the International CASTME Conference, Malta, April 2002.

[182] J.N Grima and K.E. Evans, Networked polymeric calix[4]arenas with unusual mechanical

materials, Paper presented at the 5th Materials Chemistry conference, Bangor (Wales), July 2001 (P22).

[183] J.N. Grima, A. Alderson and K.E. Evans, Modelling zeolites with negative Poisson's ratios, Paper

presented at 2nd Inorganic Materials Conference, Sta. Barbara, USA, September 2000. [184] J.N. Grima and K.E. Evans, Networked polymers with negative Poisson's ratios, Paper presented

at 220th ACS National Meeting (PMSE Division), Washington DC, August 2000.


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[185] J.N. Grima, A. Alderson and K.E. Evans, Zeolites with negative Poisson's ratios, Paper presented at 220th ACS National Meeting (Inorganic Division), Washington DC, August 2000.

[186] J.N. Grima, A. Alderson and K.E. Evans, Zeolites with negative Poisson's ratios, Paper presented

at the 4th Materials Chemistry conference, Dublin (Ireland), July 1999 (P81). [187] J.N. Grima and K.E. Evans, Molecular auxetic materials, Paper presented at the 4th Materials

Chemistry conference, Dublin (Ireland), July 1999 (B2.1). [188] J.N. Grima and K.E. Evans, The modelling and synthesis of auxetic materials, Paper presented at

the 3rd Materials Chemistry conference, Exeter (UK), July 1997 (P125). Other publications:

[189] J.N. Grima and K.W. Wojciechowski, Preface to Vol. 245 Issue 11 (Special Issue, Nov. 2008, Guest editors: J.N. Grima and K.W. Wojciechowski), Phys. Stat. Sol. (b), 245 (2008) p. 2369-2372.

[190] J.N. Grima and A.J. Vella, Are we providing our future scientists with enough mathematics?,

MathsLine, April 2003. [191] J.N. Grima, Auxetics - The more you stretch them, the fatter they become, University of Malta

Annual Report, 2002, p. 35-37. [192] J.N. Grima, New Auxetic Materials, Volume 1 & 2, PhD Thesis, University of Exeter, UK March

2000.


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Referees:

Professor Andrew Alderson Institute for Materials Research & Innovation University of Bolton, Deane Road, Bolton BL3 5AB, U.K. e-mail: [email protected] - Tel: +44 (0)1204 903513 Professor Ray Baughman Alan G. MacDiarmid NanoTech Institute, BE 26 The University of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, UK e-mail: [email protected] - Tel: +1 (972) 883-6530 Professor Kenneth E. Evans College of Engineering, Mathematics and Physical Sciences University of Exeter, Exeter, EX6 4QF, UK. e-mail: [email protected] Tel: +44 (0)1392 263648 Professor Anselm C. Griffin School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, 801 Ferst Drive, N.W., Atlanta, GA 30332-0295 USA e-mail: [email protected] Tel: +1 404 894 2490 Professor Roald Hoffmann, Nobel Laureate Dept. of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, NY 14853-1301 e-mail: [email protected] - tel: +1 607-255-3419 Professor Rod Lakes University of Wisconsin, 541 Engineering Research Building, 1500 Engineering Drive, Madison, WI 53706-1687, USA e-mail: [email protected] - tel: +1 608 2658697 Professor Alfred J. Vella, Pro-Rector Department of Chemistry, Faculty of Science University of Malta, Msida, MSD 2080, Malta e-mail: [email protected] – tel: +356 2340 2275

professor joseph n. grima bsc(melit.), phd(exon.) · curriculum vitae – joseph n grima 2...

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