ELEMENTSSPRING 2019

THE ALUMNI MAGAZINE OF THE VIRGINIA TECH DEPARTMENT OF CHEMISTRY

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LETTER FROM THE CHAIR

Dear Alumni and Friends of the Department,

As the 2018–2019 academic year draws to a close, I am continually impressed by the accomplishments of our faculty, staff, students and alumni. This academic year was nothing short of spectacular.

In the spring, Chemistry gained a second University Distinguished Professor as Daniel Crawford received this prestigious honor, joining David Kingston in this elite group of faculty. Our faculty and staff continue to make extra efforts to provide students with an outstanding learning experience. At the 2019 Access and Inclusion Awards Ceremony, Candace Wall (2019 Sally Bohland Award), Joe Merola (Teaching/Research Faculty Award) and Kezia Johnson (Staff Award) were recognized by Services for Students with Disabilities for their extra efforts to enhance excellence in access and inclusion at VT.

Anyone participating in research in VT Chemistry recognizes the importance of shared research facilities. This spring, Associate Chair Amanda Morris was named a Faculty Fellow by the Office of Vice President for Research to develop a strategic plan for core research facilities. The shared research facilities will centralize instrumentation from across the university under one roof and work to promote interdisciplinary collaboration.

Graduate students are essential members of our teaching and research missions. This year the Graduate School recognized two chemistry graduate students with major awards. Kristen Noble, mentored by Bob Moore, was recognized with the 2019 Graduate Teaching Assistant Excellence award, and Assad Khan, mentored by Greg Liu, was recognized as the 2019 Graduate Student of the Year. Assad was previously recognized by the department with the inaugural William H. Starnes, Jr. and Sofia M. Starnes Endowed Chemistry Fellowship. Bill Starnes also had a pretty good year, as he received the 2019 Chemical Pioneer Award from the American Institute of Chemistry, recognizing his work on poly(vinyl chloride).

In May we had our annual Spring Undergraduate Poster Session which coincides with the Spring DCAC Meeting. We are particularly grateful to Tom Piccariello, Ann Norris, Karen McLean, Fred Davidson, Beth Calvey, Frank Akers, Rob Shenton, Bob Schwerzel, Jen Lalli, Joe Thrasher and Bill Starnes for their participation in the meeting and poster judging. After the poster session, we held our annual award ceremony which highlights our excellent graduate and undergraduate students. These awards (found on page 11) would

not be possible without your generous support of our endowed scholarships, Chemistry Annual Fund and participation in Giving Day. Thank you!

Spring is also a time to say good-bye. Graduation saw the departure of one of our strongest undergraduate classes during my 20 years at VT. We were fortunate to have Dr. Colleen Kraft (B.S. ’81), the 2018 President of the American Academy of Pediatrics as our graduation speaker. Dr. Kraft is also the daughter of a former faculty member and university distinguished professor Jim McGrath. Jim served as the Ph.D. advisor for four other alumni who won major research awards this year: Joe DeSimone, Abhishek Roy, Michael Hickner and current faculty member Tim Long.

Spring 2019 also saw the retirement of two very dear friends and colleagues, Harry Gibson and Judy Riffle. One of the things that separates VT Chemistry from other departments around the country is our collaborative culture and I am very proud to have published multiple papers with both Harry and Judy. Harry and Hervé Marand, who retired in Fall 2018, represented the first appointment (dinner) on my interview schedule. The mutual interests I shared with Harry, especially golf, were the start of an instantaneous friendship. Judy’s generosity with resources and time, integrating me into the Macromolecular Science and Engineering Degree Program, our research experiences for undergraduates (REU) programs, and other polymer activities on campus were essential to my success at VT. While they will be missed, chemistry was successful hiring two new faculty, Valerie Welborn, a theorist and current post-doc at the University of California, Berkeley who will be joining us in Fall 2019 and Emily Mevers, a natural products chemist and current post-doc at Harvard who will be joining us in Fall 2020.

With the largest incoming class on record set to come to VT in the fall, the 2019–2020 academic year is shaping up to be an exciting one. Rest assured that Chemistry is working closely with the College of Science and the Provost to ensure these students have an excellent education and the full VT experience. Stay tuned to see how this experiment goes, have a great rest of 2019, and as always, thank you for your support of the department.

Sincerely,

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CONTENTSELEMENTSSPRING 2019

FEATURED NEWS4

ALUMNI NEWS6

FACULTY NEWS8

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EDITORIALEditor-in-Chief: Alan EskerWriter: Corrin LundquistDesign: Corrin Lundquist

DEPARTMENT OF CHEMISTRYDepartment Chair: Alan EskerAssociate Chair: Amanda MorrisDirector of Undergraduate Programs:Patricia AmateisDirector of Graduate Program: John Morris

TELL US WHAT YOU THINKWe welcome your comments and story ideas for future issues: chemdept@vt.edu

KEEP UP WITH USFollow us on Facebook (VTCHEM) and Twitter (@VTChemDept)

Virginia Tech is an equal opportunity/affirmative action institution.

ON THE COVERSimran Kala, an undergraduate researcher studying with Michael Schulz, presents her poster to judges (made up of DCAC members) at the Spring 2019 Undergraduate Research Symposium.

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BY ALAN ESKEREDITED BY CORRIN LUNDQUIST

The rank of University Distinguished Professor is the university's preeminent faculty rank, and of the 1,500 active faculty members at Virginia Tech, only about 20 current faculty have been bestowed the honor by the Board of Visitors.

Crawford earned his undergraduate degree in 1992 from Duke University and went on to earn his Ph.D. from the University of Georgia in 1996. He joined the Virginia Tech faculty as an assistant professor in 2000 and has since made his indelible mark on the chemistry community.

At the time of his arrival, he was already highly anticipated to be a future leader in the area of coupled-cluster calculations, but he was starting out as the department's sole theoretical chemist. In his first year, he won a New Faculty Award from the Camille and Henry Dreyfus Foundation and a Research Innovation Award from Research Corporation, followed by an NSF CAREER Award and the Cottrell Scholar Award, both within the next few years. His research at the time targeted the implementation of completely new codes within the coupled cluster framework for determining chiroptical properties of molecules, allowing for precise control over stereochemistry for drugs, without which could lead to disastrous side effects. More importantly, however, he radically altered the culture of the department: our theory group has since grown to five, with the additions of Diego Troya, Ed Valeev, Nick Mayhall and, most recently, Valerie Welborn.

As Crawford's career progressed, he continued to inspire and lead his discipline. He won the Paul A. M. Dirac Medal of the World Association of Theoretical and Computational Chemists in 2010 and became a Fellow of the American Chemical Society in 2015.

In 2016, he worked to secure $19.4 million in National Science Foundation funding to create the Molecular Software Sciences Institute, better known as MolSSI, with the goal to “serve as a nexus for science, education and cooperation serving the community of computational molecular scientists,” a goal which has since been achieved. MolSSI has thrived under Crawford's directorship. Its impact is wide-reaching throughout the computational chemistry community as it works to educate a new crop of software scientists through its multilevel fellowship program, open source resources and Education Workshops ranging from one day introduction courses to the biennial two week Software Summer School.

Even with all his achievements over the course of his remarkable career, Crawford has never lost sight of the importance of teaching. He has won the departmental teaching award twice and has also received the university-wide Certificate of Teaching Excellence. Moreover, he is consistently one of the most well-received lecturers by students due to his clarity and compassion which earns the respect of every student that he teaches. He has remained as down-to-earth as he was as an assistant professor; case in point: Crawford has signed on to teach General Chemistry for Majors in the fall.

What sticks out most about Crawford is that he would never be one to tell you about his achievements, which is why we have taken the time to highlight them here. The Board of Visitors could not have bestowed this title on a more honorable candidate.

ELEMENTS

FEATURED NEWS /

DISTINGUISHEDIn 19 years, Daniel Crawford has achieved an exceptional career as a brilliant theoretical chemist and now has another achievement to add to his list: University Distinguished Professor.

5SPRING 2019

GRADUATE STUDENT OF THE YEARAt the Graduate School’s annual awards banquet, Assad Khan was recognized as the 2019 Graduate Student of the Year.Assad is a fifth-year graduate student in Prof. Guoliang (Greg) Liu’s group, studying plasmonic nanoparticles and polymer nanocomposites with potential applications in energy-efficient optical coatings for windows, electronics and acoustics. Originally from Pakistan, he was led to Blacksburg by his deep curiosity about the use of polymeric materials for energy related applications.

Currently in the final stages of his graduate career, Assad has made the most of his time at Virginia Tech, racking up nine peer-reviewed publications, nine oral presentations at national conferences and countless poster presentations, but his accomplishments don’t stop there. Within the lab, Assad mentored eight undergraduate and graduate students and together, their work yielded three co-authored publications. For many of them, the experience fueled their interest in chemistry research, and several pursued graduate school at places such as Virginia Tech, Rice University and Wake Forest University.

For Assad, his journey as a graduate student will soon come to a close as he wraps up his research and thesis this summer. He hopes to go into industry with a focus towards application-driven materials generation.

TEACHING EXCELLENCEKristen Noble was recognized with the

Graduate School's 2019 Graduate Teaching Assistant Excellence Award

Kristen has been a valuable asset to the department since her first semester, particularly excelling as a graduate teaching assistant. Over the course of her graduate career, she has

taught a total of six semesters in a range of courses, including general chemistry lab, analytical chemistry for majors recitation, analytical chemistry lab, physical chemistry lab and descriptive

inorganic lecture. In 2018, she was recognized with the departmental Graduate Teaching Award.

The impact of Kristen’s teaching is shown through the praise received from faculty and students alike, as she is one of the most requested GTAs by faculty and consistently receives positive student evaluations. At the department's award ceremony, her research advisor, Prof. Bob Moore, said that Kristen is one of the best peer mentors he has ever seen.

After she defends this summer, Kristen will be taking her gift of teaching to Roanoke College, where she will be working as an instructor, teaching both general chemistry and a course in chemistry and crime that will combine her expertise in chemistry with her undergraduate degree in forensic science (Kristen graduated from West Virginia University with two Bachelor of Science degrees in Chemistry and Forensic and Investigative Sciences).

/ FEATURED NEWS

ALUMNI NEWS

MCGRATH ALUMS TEAM UP TO WIN ACS AWARDTwo former McGrath alumni, Mike Hickner (ChemE Ph.D. ‘03, left) and Abhishek Roy (MACRO Ph.D. ‘08), were part of a collaborative team including researchers from the National Institute of Standards and Technology (NIST), Pennsylvania State University, the University of Florida and Dow Chemical that won the 2019 Cooperative Research Award in Applied Polymer Science and Engineering at the Spring 2019 National ACS Meeting in Orlando, Florida. The team won the award for their work on improved materials for reverse osmosis (RO) desalination membranes.

Part of this work was to deliver quantitative models to explain current performance limits and to guide future improvements of RO membrane materials, resulting in major breakthroughs in understanding the water purification membranes that play a central role in addressing the water crisis.

The team is credited with simultaneous development of homogeneous membrane materials with systematic structural variations, advanced analytical techniques to quantify materials structure, and integrated computational models in a manner that establish fundamental structure-property-processing relationships for RO membranes.

PVC PIONEER: BILL STARNESProf. Bill Starnes (B.S. ‘55) was honored with the 2019 Chemical Pioneer Award from the American Institute of Chemists. The award recognizes chemists, chemical engineers, or their associates who have made outstanding contributions which have had a major impact on advances in chemical science and industry or the chemical profession.

Starnes is the Gottwald Professor Emeritus of the College of William and Mary and over his long and distinguished career, both in industry and in academia, he made many fundamental discoveries

that led to the development of poly(vinyl chloride) (PVC) as one of today’s most ubiquitous materials.

These discoveries included the development of a method to determine its microstructure, investigation of PVC structural defects, elucidation of the mechanistic pathways for the thermal decomposition and stabilization of PVC, determination of the mechanistic origins of smoke suppressants, fire retardants and thermal stabilizers used in PVC, and the discovery of novel copolymers of vinyl chloride.

Starnes and his wife Sofia have been strong supporters of the department and recently endowed the William H. Starnes, Jr. and Sofia M. Starnes Endowed Chemistry Fellowship to support graduate students who have exhibited excellence in their research studies. He also serves on the department’s advisory council and has proven to be an invaluable asset to the team that helps guide the department.

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7SPRING 2019

/ ALUMNI NEWS

JOSEPH DESIMONE WINS AWARD FROM NATIONAL ACADEMYProf. Joseph DeSimone (McGrath Ph.D. ’90) was awarded the 2018 National Academy of Sciences Award for Convergent Science. The award recognizes significant advances in convergence research—defined as the integration of two or more of the following disciplines: mathematics, physics, chemistry, biomedicine, biology, astronomy, earth sciences, engineering and computation science—that were only possible through this type of collaboration.

DeSimone’s breakthroughs to improve human health include 3D printed dentures, nanomedicines for cancer therapy, drug delivery devices that can be implanted and tailored to a patient’s needs and an inhalable pulmonary vaccine platform that can be used to target diseases such as tuberculosis and pneumonia.

While DeSimone is the Chancellor's Eminent Professor of Chemistry at the University of North Carolina at Chapel Hill, he is currently on sabbatical to serve as the president of Carbon, a technology company and manufacturer based in Silicon Valley, California. The company, founded by DeSimone in 2013, is working to reinvent how polymer products are designed, engineered, manufactured and delivered toward a digital and sustainable future.

MATT SHOULDERS GETS TENUREProf. Matt Shoulders (B.S. ‘04) was recently awarded tenure at the Massachusetts Institute of Technology (MIT). While an undergraduate, he participated in undergraduate research with Profs. Felicia Etzkorn, David Kingston and Harry Dorn. He went on to earn his Ph.D. from the University of Wisconsin at Madison in 2009 before joining the faculty of MIT in 2012. His lab at

MIT focuses on integrating the tools of chemistry and biology to elucidate the complex pathways responsible for maintaining cellular protein homeostasis.

Dr. Colleen Kraft, M.D., M.B.A. FAAP (B.S. '81) was this year's departmental graduation speaker, continuing a long tradition of alumni coming back to share their wisdom and parting words with the year's graduating class.

Colleen is the daughter of the late Prof. Jim McGrath and graduated from Virginia Tech with her bachelor's degree in chemistry before working for the University of Rochester, synthesizing novel contrast materials in the Radiology Department. She went on to earn her M.D. from Virginia Commonwealth University as well as her M.B.A. from the University in Cincinnati. She practiced primary care pediatrics in Richmond, Virginia for 20 years, and in 2012, was recruited to become the Founding Pediatric Program Director of the Pediatric Residency Program at the Virginia Tech Carilion School of Medicine. She most recently served as President of the American Academy of Pediatrics in 2018 and became the national spokesperson advocating for protecting teens against e-cigarettes, protecting children from separation from their parents at the southern U.S. border, and for innovation in pediatric health.

COLLEEN KRAFT: GRAD SPEAKER

CANDACE WALLwas honored with the 2019 Sally Bohland Excellence in Access and Inclusion Award. The award was established to recognize a faculty member who is a model for others and whose leadership fosters a culture of access and inclusion.

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FACULTY NEWS

GREG LIUpublished two papers, the first in Science Advances, detailing a new method to synthesize porous carbon fibers with uniform size and spacing, and the second in Nature Communications, discussing how those porous carbon fibers can enable high energy density and high electron/ion charging rates.

LOU MADSENpublished a paper in Nature Communications that shares the discovery that a high-strength polymer known as “PBDT” has a double-helical conformation. The paper was featured in the Materials Research Society’s MRS Bulletin, which highlights important papers from the materials community.

JOHN MATSONreceived the 2019 Thieme Chemistry Journals Award in January and recently received a Humboldt Research Fellowship for Experienced Researchers which will support his stay in Germany next year where he will work on hydrogen sulfide-releasing materials for immune system engineering.

AMANDA MORRISwas appointed as a Faculty Fellow by the Office of the Vice President for Research and Innovation. She will work with two other inaugural Faculty Fellows to develop a strategic plan for core facilities that can be used by researchers across the university campus.

JOE MEROLAreceived a 2019 Excellence in Access and Inclusion Award for Teaching/Research Faculty, hosted by the Services for Students with Disabilities department of Student Affairs. He was also named to the University's Academy of Faculty Leadership for his leadership excellence.

TIM LONGwas awarded the ACS Rubber Division's Chemistry of Thermoplastic Elastomer Award, sponsored by Renkert Oil, LLC. The award honors significant contributions in the advancement of the chemistry of thermoplastic elastomers.

WEBSTER SANTOSand his team received $2.8 million from the National Institute of Allergies and Infectious Diseases (NIAID) to discover drugs that work to suppress a small molecule transporter and could potentially be used in immuno-oncoloy and the treatment of autoimmune disorders such as multiple sclerosis.

9SPRING 2019

/ FACULTY NEWS

Judy Riffle has been conferred the title of professor emerita by the Board of Visitors, recognizing her career as a professor of chemistry and former director of the interdisciplinary macromolecular science and engineering Ph.D. education program.

Prior to joining the Department of Chemistry faculty in 1987, Prof. Riffle worked in industry, first at Union Carbide Corporation as a research scientist and later at Thoratec Laboratories as Manager

of the Materials Division and then Vice President of Research and Development. She initially returned to Virginia Tech (Prof. Riffle is also an alumna) as a Research Scientist and a Visiting Assistant Professor in

1987, before officially joining the faculty as an Assistant Professor of Chemistry in 1988.

As a faculty member, Prof. Riffle’s research made significant contributions to polymer science in the fields of biomaterials for drug delivery, polymer composites for defense and aerospace, and separation membranes for water purification and gas separation. Her work led to the development of materials used in heart transplants, arterial grafts and contact lenses.She was a dedicated research advisor and served as the principal advisor for 64 master's and doctoral dissertations. In 2018, Prof. Riffle won the department's John C. Schug Research Award for both her research and graduate advising.

In retirement from academia, Prof. Riffle will be turning her focus towards reverse osmosis membranes and using them to address the global water crisis through a company she founded in 2018, NALA Systems.

JUDY RIFFLE, PROF. EMERITA

Prof. Harry Gibson has been conferred the title of professor emeritus by the Virginia Tech Board of Visitors, recognizing a long and successful career in chemistry.

Prior to his academic career at Virginia Tech, Prof. Gibson was employed in industry for 20 years. During his three years at Union Carbide in Tarrytown, NY he carried out kinetic and mechanistic studies of reactions of alcohols with ethylene oxide to form glycol ethers, important as brake fluids and solvents, and explored new uses for formic acid. His 15 years at Xerox in Webster, NY were devoted to interdisciplinary study of photo-electrical phenomena and materials useful in imaging and display technologies: liquid crystals; triboelectrification, the charging of the toner particles necessary to produce the final image in xerographic copies; development of organic photoconductors, now used exclusively in all copiers and laser printers; he contributed to the early development of conducting organic polymers (polyacetylenes). At Signal in Des Plaines, Illinois for two years he was engaged in research and management of a program on high performance printed circuit wiring boards.

He joined Virginia Tech in 1986 and developed an international reputation as an innovator in synthetic chemistry, particularly in the field of supramolecular chemistry. Along with reviewing hundreds of articles and co-authoring a few hundred more, Prof. Gibson advised 23 Ph.D. students, 12 master’s degree students, 31 postdoctoral associates and 51 undergraduate students.

In retirement, Prof. Gibson will travel and play golf with his lady, Brenda Raine. He wants to get his handicap back down to single digits, if possible, and will also get back to fishing at Smith Mountain Lake. He is also looking forward to more time spent with his six grandchildren, five of whom call Blacksburg home.

HARRY GIBSON, PROF. EMERITUS

Each academic term, the Graduate School provides assistantships through the Graduate School Doctoral Assistantship program. In the Department of Chemistry, research advisors nominate their students based upon strong evidence of research productivity; demonstrated leadership, creativity and independence; and excellent academic performance in the core and foundation requirements. This spring, the Department of Chemistry awardees were (pictured right, from left to right): Mohammad Mominur (Momi) Rahman (Lin Group), Assad Khan (Liu Group), Matthew Kessinger (A. Morris Group) and Justin Grams (Santos Group).

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STUDENT NEWS

GRADUATE STUDENT DOCTORAL ASSISTANTSHIPS

The Virginia Tech chapter of the American Chemical Society Student Affiliates, known on campus as the Chemistry Club, has won an Outstanding Award for activities conducted during the 2017–2018 academic year. The Chemistry Club is a way for undergraduate students with an interest in chemistry to come together and participate in programs and activities to enhance their college experience and prepare them for future careers.

The Outstanding award is the highest award offered by The Society Committee on Education. Of the over 400 chapter activity reports submitted for the 2017–2018 school year, only 69 chapters received Outstanding Awards. In years past, the club has received a Commendable Award. The chapter was also recognized as a Green Chapter for successfully completing green chemistry activities throughout the year.

Special commendation went to Professor Maggie Bump who serves as faculty advisor of the chapter. Prof. Bump is relentlessly committed to not only undergraduate education and mentoring but also community outreach through workshops throughout the year and camps during the summer months.

The Chemistry Club, pictured with their faculty advisor, Maggie Bump.

CHEMISTRY CLUB RECEIVES OUTSTANDING AWARD

Matthew Kessinger, a third year Ph.D. candidate in the Amanda Morris lab, was the recipient of a Sigma Xi Grant in Aid of Research (GIAR). Sigma Xi is a Scientific Research Honor Society and the GIAR award program works to provide both undergraduate and graduate level students with

valuable educational experiences and promotes scientific excellence and achievement through hands-on learning. In the lab, Matt has been working on next generation solar cells and the award will help support his research.

KESSINGER WINS SIGMA XI AWARD

11SPRING 2019

2019 AWARD CEREMONY

Student AwardsUndergraduate Awards

ACS Analytical Chemistry AwardRobert Smith

ACS Inorganic Chemistry AwardAnn Marie May

ACS Organic Chemistry AwardGregory Traversa

ACS Physical Chemistry AwardSteven Miller

ACS-Hach Land Grant Undergraduate ScholarshipEmerald GreeneRachael Langlois

ACS-Virginia Blue Ridge Section James Lewis Howe AwardSteven Miller

Academic Excellence AwardLinda AllworthRachel BradleyGrey FritzAnn Marie MaySteven MillerJonathan RoofGregory TraversaBenjamin Zydlewski

General Chemistry Viers Achievement AwardElizabet Danailova Lauren HackKayla KoenigPiper MacnicolAndrew Pedraza

Karen J. Brewer Memorial AwardPiper MacnicolChristopher Stoll

Undergraduate Poster Session WinnersJames AlatisKatie FlintScott McGuiganAnshul Paripati

Graduate Awards

William H. Starnes, Jr. and Sofia M. Starnes Endowed Chemistry FellowshipRussell Fritzemeier

Graduate Research AwardDarren DriscollShaoyang LinMingjun Zhou

Graduate Teaching AwardBrittany BonnettChanelle BrownChristine Duchane

Graduate Service AwardRyan ArcherKristyna Cagasova

Faculty and Staff Awards Harold M. McNair Staff Service AwardKen Sharp-Knott Alan F. Clifford Faculty Service Award Carla Slebodnick

John C. Schug Research AwardJohn Matson Jimmy W. Viers Teaching AwardCandace Wall

Undergraduate Academic Scholarships

Department of Chemistry Undergraduate Research Scholarships - Summer 2018Piper MacnicolCarol Ann RosenblumRobert Smith

Dr. Roy H. Bible ‘48 Memorial ScholarshipBenjamin Zydlewski

Julius P. Bilisoly Endowed ScholarshipSteven Miller

John B. and Sarah Hopper Harvie Endowed ScholarshipGrey Fritz

Dallas A. Kinser & Robert T. Johnson ScholarshipJames AlatisGregory Traversa

John William May ‘42 ScholarshipAnn Marie May

Ogliaruso Family ScholarshipLinda Allworth

Charles B. Walker ScholarshipJustin Martinez

Timothy E. and Victoria K. Long Undergraduate Science ScholarshipMadison BardotConnor Slamowitz

James E. McGrath Undergraduate Research AwardMai Anh Nguyen

Each spring, the Department of Chemistry hosts an award ceremony to recognize the achievements of students, faculty and staff. Many of the awards would not be possible without the generous support and philanthropy of our alumni and friends.

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HELP YOUNG CHEMISTS GET STARTED ON THE RIGHT FOOTContributions from our alumni and friends help our many deserving undergraduate and graduate students by providing state-of-the-art facilities, expanding research activities and allowing the department to respond to new opportunities immediately.

To make an immediate contribution to the Department of Chemistry Annual Fund, you may visit the university’s website at givingto.vt.edu or contact the Office of Gift Accounting at (800) 533-1144.

For more information or to learn about other ways to support the Department of Chemistry, please contact Wade Stokes, Assistant Dean of Advancement, at (540) 231-4033 or lwstokes@vt.edu.

We thank you in advance for your support.

Department of Chemistry (0212)Davidson Hall Room 480, Virginia Tech1040 Drillfield DriveBlacksburg, VA 24061

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