financial support was provided in part by the us department of … · 2015-07-14 · financial...

Financial support was provided in part by the US Department of Education through GAANN Award P200A120064 , administered by IMNI at Brown University.

GAANN FELLOW

STEVEN AHN Graduate Student/Engineering Co‐Mentors: Tayhas Palmore/Wesley Bernskoe er Thesis Topic: Homegeneous, heteroge-neous, and chemically-modified electrode systems for electrocataly c reduc on of carbon dioxide

LIST OF PUBLICATIONS

Steven T. Ahn, Elizabeth A. Bielinski, Elizabeth M. Lane, Yanqiao Chen, Wesley H. Bernskoe er, Nilay Hazari and G. Tayhas R. Palmore. “Enhanced CO2 elec-troreduc on efficiency through secondary coordina on effects on a pincer iridium catalyst”. Chem. Commun. (2015), 51, 5947.

Daniel DeCiccio, Steven T. Ahn, S. Sen, F. Schunk, G.Tayhas R. Palmore, and Christoph Rose-Petruck. “Electrochemical reduc on of CO2 with clathrate hydrate electrolytes and copper foam electrodes”. Electrochemical Communica ons. (2015), 52, 13-16.

Brian S. Hanna, Alex D. MacIntosh, Steven Ahn, Brian T. Tyler, G. Tayhas R. Palmore, Paul G. Williard, and Wesley H. Bernskoe er. “Ancillary Ligand Effects on Carbon Dioxide-Ethylene Coupling at Zerovalent Molybdenum”. Organometallics. (2014), 33, 3425-3432 .

CONFERENCES/PRESENTATIONS

January, 2015: CO2: From Waste to Worth, “Electrochemical Reduc on of CO2 at Cu Foams” and “Electrochemical Reduca on of CO2 to Formic Acid by an Iridum Pincer Complex”.

March, 2015: NSF CCI Reverse Site Visit, “Electrochemical Reduc on of CO2 to Formic Acid Using a Pincer-Supported Iridium Catalyst” and “Mentoring Underrepresented Groups”.

May, 2015: Cabot Corpora on Student Material Research Forum, “Electrochemical Reduc on of CO2 to Formic Acid by an Iridium Pincer Complex”.


FORMER GAANN FELLOW

MEGAN CREIGHTON Graduate Student/Engineering Co‐Mentors: Robert Hurt/Agnes Kane Thesis Topic: Ar facts Caused by Graphene-Family Materials in Biological Systems

Megan Creighton (le )/Robert Hurt (mentor-right)


July, 2011: Annual World Conference on Carbon in Shanghai, China. Presented “Behavior of Graphene Family Materials in

Biological Systems” and won an award "Best Poster".

May, 2011: 21st Society of Environmental Toxicology and Chem‐istry European Annual Mee ng in Milan, Italy. Presented “In Vitro Biological Responses to 1D and 2D Nanomaterials: Carbon Nanotubes and Graphene”.

Selected images demonstra ng cellular interac on and phagocytosis. A) Incomplete phagocytosis of a large thin graphite flake by mul ple macro-phages a er 24 hours. The upper arrow indicates graphenic surface pro-truding through the membrane, the bo om arrow indicates the lower lim-it of the cellular coa ng. B) Cellular membrane protrusions extending over a GS-25 sheet a er 3 hours. C) Incomplete phagocytosis of a GS-5 sheet and focal plasma membrane injury a er 6 hours. D) A larger flake from the GS-5 sample coated with cellular material a er 24 hours, likely by one or more macrophages visible on the backside of the flake. Scale bar = 2 µm


GAANN FELLOW

JONATHAN ESTRADA Graduate Student/Engineering Co‐Mentors: Chris an Franck/Diane Hoffman-Kim Thesis Topic: Microcavita on as a Neuronal Damage Mechanism in Blast Trauma c Brain Injury


October 2014: Society of Engineering Science. Presented: “Inves ga on of Microcavita on as a Neuronal Damage Mechanism in Blast Trauma c Brain Injury”.

October 2014: Society of Engineering Science. Presented: “3D Trac on Forces of Schwann Cells on Compliant Pa erned Substrates”.


Estrada JB, Franck C. “Intui ve Interface for the Analy cal Evalua on of Speckle Pa erns for Use in Digital Image and Volume Correla on Tech-niques.” Journal of Applied Mechanics (in review).

Poellmann MJ, Estrada JB, Boudou T, Berent ZT, Franck C, Wagoner-Johnson AJ. “Differences in morphology and trac on genera on of cell lines represen ng different stages of osteogenesis.” Journal of Biomechanical Engineering (in review).

Time-plot of bubble growth in collagen seeded with neurons induced by a 6ns, 10mJ pulse of 1064 nm light, filmed at 200,000 frames per second.

Confocal image stack of neurons stained with Calcein AM (green). Schema c show-ing the injury envelope over me, with bubble size Rb, primary injury radius R1, and secondary injury radius R2.



Croote, D., Godfrin, M. P., Bose, A., Tripathi, A., & Lee, J. (2013). “A pla orm for retaining na ve morphology at sub-second me scales in cryogenic transmission electron microscopy.” Review of Scien fic Instruments. (2013), 84(5), 053707.

Godfrin, M. P., Guo, F., Chakraborty, I., Heeder, N., Shukla, A., Bose, A., Hurt, R., & Tripathi, A. “Shear-Directed Assembly of Graphene Oxide in Aqueous Dispe sions into Ordered Arrays.” Langmuir. (2013), 29(43), 13162-13167.

Heeder, N., Yussuf, A., Guo, F., Chakraborty, I., Godfrin, M. P., Hurt, R., Bose, A., Tripathi, A., & Shukla, A. “Highly conduc ve graphene-based segregated co posites prepared by par cle templa ng.” Journal of Materials Science. (2014), 49(6), 2567-2570.

Helgeson, M. E., Gao, Y., Moran, S. E., Lee, J., Godfrin, M., Tripathi, A., Bose, A., & Doyle, P. S. “Homogeneous percola on versus arrested phase separa on in a rac vely-driven nanoemulsion colloidal gels.” So ma er. (2014), 10(17), 3122-3133.

Heeder, N., Yussuf, A., Chakraborty, I., Godfrin, M. P., Hurt, R., Tripathi, A., Bose. A., & Shukla, A. “Fixed-Angle Rotary Shear as a New Method for Tailoring Ele tro-Mechanical Proper es of Templated Graphene-Polymer Composites.” Composites Science and Technology. (2014) 100, 70-75.

I. Chakraborty, K, Bodurtha, N. Heeder, M.P. Godfrin, A. Tripathi, A. Shukla, R. Hurt, A. Bose. „Massive Electrical Conduc vity Enhancement of Graphite Nanoplate/Polystyrene Composites Using a Non-Conduc ve Filler.“ ACS Applied Materials & Interfaces. (2014) 6(19), 16472-16475.

Godfrin, M.P., Tiwari, A., Bose, A., & Tripathi. A. (2014) Phase and Steady Shear Behavior of Dilute Carbon Black Suspensions and Carbon Black Stabilized Emisions. Langmuir, 30 (51), 15400–15407.

Bookstaver, M., Godfrin, M. P., Bose, A., & Tripathi, A. (2015). An insight into the growth of Alcanivorax borkumensis under different inocula on condi ons. Journal of Petroleum Science and Engineering, 129, 153-158.

GAANN FELLOW

MICHAEL GODFRIN Graduate Student/Engineering Co‐Mentors: Anubhav Tripathi/Robert Hurt Thesis Topic: Behavior of Na-nomaterials and Bacteria and their Interac ons at Interfaces

a) Carbon black nano-par cles form a web-like network (gel), con-taining aqueous pores and an oil droplet. Scale bar is 2 um. b) A biofilm of oil-ea ng, A. borkumensis bacteria formed at an oil/water interface.

Langmuir, 30 (51), 15400-15407


GAANN FELLOW

AMANDA KRAUSE Graduate Student/Engineering Co‐Mentors: Ni n Padture/Reid Cooper Thesis Topic: Calcia-Magnesia-Aluminosilicate A ack and Mi ga on Mechanisms in Air Plasma Sprayed Thermal Barrier Coa ngs

List of Publica ons Presenta ons/Conferences July 2014: Thermal Barrier Coa ngs IV in Irsee, Germany. “Degrada on and Delamina-on of Thermal Barrier Coa ngs Exposed to CMAS Deposits in Gas-Turbine Engines and

its Mi ga on” (Poster).

January 2015: 39th Interna onal Conference and Expo on Advanced Ceramics and Com‐posites in Daytona, Florida. “CMAS A ck and Mi ga on Mechanisms in Air Plasma Sprayed Thermal Barrier Coa ngs.”

7wt.% Y ria stabilized ZrO2 thermal barrier coa ngs, used in turbine en-gines, are suscep ble to failure due to CaO-MgO-Al2O3-SiO2 deposits. A TBC material, Y2O3·2ZrO2, was developed that mi gates penetra on to allow longer service life.


GAANN FELLOW

JONATHAN KURVITS Graduate Student/Chemistry Co‐Mentors: Rashid Zia/Kris e Koski Thesis Topic: Characteriza on of the Order and Orienta on of Electronic Transi ons from Luminescent Thin Films

Wide-angle energy-momentum spectrum of a monolayer thin film of molybdenum disulfide together with theore cal fits obtained using

List of Publica ons M. Jiang, J.A. Kurvits, Y. Lu, A.V. Nurmikko, and R. Zia. “Reusable Electrosta c Self-Assembly for Controllable Posi oning of Single Quantum Emi er Nanopar -cles.” (Submi ed to Nano Le ers) S. Cueff, D. Li, Y. Zhou, F. Wong, J.A. Kurvits, S. Ramanathan, and R. Zia. “Leveraging VO2 phase-change to circumvent the life me limit for modula ng erbium light emission.” (Submi ed to Nature Nanotechnology) C.M. Dodson, J.A. Kurvits, D. Li, and R. Zia. “Wide-Angle Energy-Momentum Spectroscopy.” Opt. Le ., (2014), 39, 3927-3930. Presenta ons/Conferences December 2014: Materials Research Society Conference, “Characterizing Nano-Antenna Direc onal Emission Using Wide-Angle Energy-Momentum Spectros-copy”.

September 2014: Interna onal Conference on Near‐Field Op cs, “Characterizing the Direc onal Emission of Op cal Antennas using Wide-Angle Energy-Momentum Spectroscopy”.


GAANN FELLOW

HETAL DESAI MARBLE Graduate Student/Molecular Pharmacology, Physiology and Biotechnology Co‐Mentors: Eric Darling/Nick Fawzi Thesis Topic: Gene expression based characteriza on and enrich-ment of adipose-derived stem cell popula ons


Desai HV, Vorugan IS, Jayasuriya C, Chen Q, Darling EM. “Live-cell, temporal gene expression analysis of osteogenic differen a on in adipose-derived stem cells.” Tissue Eng Part A. (2014), 20(5-6), 899-907.

Marble HD, Sutermaster BA, Fonseca VC, Kanthilal M, Darling EM. “Gene expression-based enrichment of live cells from adipose ssue produces subpopula ons with improved osteogenic poten al.” Stem Cell Res Ther. (2014), 5(5), 145.

The above is a synthe c strategy towards genera on of a DNA-based hybridiza on probe capable of signal off-on behavior with magne c resonance. Similar to fluorescent molecular bea-con probes, which yield a fluorescent "on" signal when the DNA probe hybridizes to an mRNA target of interest, these magne c resonance probes are being designed to exhibit an NMR signal only when in the presence of a target molecule and remain "off" otherwise. The probe func ons through the para-magne c relaxa on enhancement effect, by which the gadolin-ium relaxes the fluorine resonance in a magne c field when in close proximity.


FORMER GAANN FELLOW

JENNIFER MITCHEL Graduate Student/Biomedical Engineering Co‐Mentors: Diane Hoffman-Kim/Edith Mathiowitz Thesis Topic: Aligned and Asymmetric Environmental Cues to Direct Nerve Guidance and Cell Migra on


October, 2011: Biomedical Engineering Society Annual Mee ng in Har ord, CT. Presented “Matlab-Based Algorithm for Automa c Tracing of Confluent Neuronal Images”.

July, 2011: BioMethods Conference in Boston, MA. Presented “Cellular Scale Anisotropic Topography Guides Schwann Cell Mo lity”.

October, 2010: Biomedical Engineering Society Annual Mee ng in Aus n, TX. Presented “Guided Schwann Cell Mo lity on Cellular-Scale Anisotropic Topography”.

Asymmetric Topography Pilot Study

Materials: Polymer surfaces with raised asymmetric topogra-phy Experiment: Neural ssue explant cultured on smooth or asymmetric materials for 3 days Trends: Toward asymmetric growth


Mitchel JA, Hoffman-Kim D., "Cellular Scale Anisotropic Topography Guides Schwann Cell Mo lity", PLoS ONE (2011), 6(9), e24316

Kofron CM, Liu YT, López-Fagundo CY, Mitchel JA, Hoffman-Kim D., "Neurite outgrowth at the biomime c interface", Ann Biomed Eng. (2010), 38(6), 2210-25.

Hoffman-Kim D, Mitchel JA, Bellamkonda RV, "Topography, Cell Response, and Nerve Regenera on", Annu Rev Biomed Eng. (2010) 12, 203-31.


FORMER GAANN FELLOW

ANTON TOKRANOV

Graduate Student/Engineering Co‐Mentors: Brian Sheldon/Kyung-Suk Kim Thesis Topic: Surface Reac ons and Concomitant Stress Evolu ons in Graphi c Thin Film Electrodes in Li-Ion Ba ery Proteins


A. Mukhopadhyaya, A. Tokranov, K. Sena, Xingcheng Xiaob, B.W. Sheldon, "Thin film graphite electrodes with low stress genera on during Li-intercala on", Carbon,(2011), (49) 8, 2742-2749.

S. Soni, B.W. Sheldon, X. Xiao, A. Tokranov, "Thickness effects on the lithia on of amorphous silicon thin films", Scripta Materialia, (2011), (64) 4, 307-310.


Nov. 28th through Dec. 2nd, 2011: Fall MRS Mee ng in Boston, MA. Presented “Surface Reac ons and Concomitant Stress Evolu ons in Graphi c Thin Film Electrodes in Li-Ion Ba ery”.

April, 2011: 2011 Rhode Island Nanotechnology Showcase in Providence, RI. Presented “In situ determina on of stress evolu on in composite electrode mate-rials for Li-ion ba eries”.

TEM Observa ons on CLC Carbon

Graphene fringes can be seen in planar view TEM image

Graphene sheets are perpendicular to substrate

Graphene have random orienta on in the lateral direc on (c-axis; parallel to sub-strate) for spin coated film

Graphene layers are direc onally oriented in the lateral direc on (c-axis; parallel to substrate) for bar coated film

financial support was provided in part by the us department of … · 2015-07-14 · financial...

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