Professor Citrin earned a B.A. from Williams College (1985) and a M.S. (1987) and a Ph.D. (1991) from the University of Illinois, all in physics, where his dissertation was on the optical properties of semiconductor quantum wires. Subsequently, he was a post-doctoral research fellow at the Max Planck Institute for Solid State Research, Stuttgart, Germany (1992-1993) and Center Fellow at the Center for Ultrafast Optical Science at the University of Michigan (1993-1995). Dr. Citrin was an assistant professor of physics and materials science at Washington State University (1995 to 2001).

Professor Citrin joined the faculty at Georgia Tech in 2001 where his work focuses on terahertz technology and nanotechnology. He is a recipient of a Presidential Early Career Award for Scientists and Engineers and of a Friedrich Bessel Award from the Alexander Von Humboldt Stiftung. In addition, he is Project Coordinator on Nonlinear Optics and Dynamics at Georgia Tech-CNRS UMI 2958 located at Georgia Tech-Lorraine. Professor Citrin’s research in terahertz imaging is featured in the Georgia Tech press release, ”Imaging Technique Unlocks the Secrets of 17th Century Artists"; a list of some media placements from the press release may be found at http://photonics.georgiatech-metz.fr/node/33.

Research interests: 

• Terahertz nondestructive testing of materials
• Terahertz characterization of art and cultural heritage
• Chaos and nonlinear dynamics in external-cavity semiconductor lasers
• Nanophotonics
• High-speed electronic, photonic, and optoelectronic devices
• Nonlinear optical properties of semiconductor materials and devices

Shannon Yee began as an Assistant Professor in the George W. Woodruff School of Mechanical Engineering in January 2014. He completed his Ph.D. at the University of California - Berkeley under the supervision of Prof. Arun Majumdar, Prof. Chris Dames, and Prof. Rachel Segalman. In 2010, he was named the first fellow to the U.S. Dept. of Energy 's Advanced Research Project Agency - Energy (ARPA-E) assisting to form the agency in its inaugural year. In 2008 he was awarded the prestigious Hertz Fellowship to support his graduate studies and research in energy. Yee received his Master 's degree in Nuclear Engineering in 2008 from The Ohio State University where he was a U.S. Dept. of Energy Advanced Fuel Cycle Initiative Fellow. He received his Bachelor 's degree in Mechanical Engineering in 2007, also from The Ohio State University.

Seung Woo Lee joined the Woodruff School of Mechanical Engineering at the Georgia Institute of Technology as an assistant professor in January of 2013. Lee received his Ph.D. in chemical engineering at MIT, focusing on designing high-energy and high-power density nanostructured electrodes for electrochemical energy storage devices, and synthesizing catalysts for electrochemical energy conversion of small molecules such as methanol oxidation and O2 reduction. He conducted his postdoctoral research in designing electrodes for lithium rechargeable batteries and catalysts for solar energy storage in the Department of Mechanical Engineering and the Department of Chemistry at MIT.

Paul Kohl received a B.S. degree from Bethany College in 1974 and Ph.D. from The University of Texas, both in Chemistry. After graduation, Kohl was employed at AT&T Bell Laboratories in Murray Hill, NJ from 1978 to 1989. During that time, he was involved in the design and processing of electronic packages for Bell system components. He created new chemical processes for silicon, compound semiconductor, and MEMS devices. In 1989, he joined the faculty of the Georgia Institute of Technology in the School of Chemical and Biomolecular Engineering, where he is currently a Regents' Professor and holder of the Thomas L. Gossage/Hercules Inc. Chair. He is the President of The Electrochemical Society and past Editor of Journal of The Electrochemical Society and past founding editor of Electrochemical and Solid-State Letters. Kohl's research interests include the design of new materials, processes, and packages for advanced interconnect for integrated circuits and MEMS devices. He is the past Director of the Semiconductor Research Corporation/DARPA Interconnect Focus Center. The goal of this center was to create new technological solutions for future electronic devices. Current projects include creation of new photosensitive dielectric materials for electronic packaging and the design and fabrication of MEMS packages. He also has programs in new approaches to fuel cells and lithium batteries. The new direct methanol alkaline fuel cells and hybrid alkaline/acid fuel cells have the potential reduced water management and platinum free usage. The integration of high energy density lithium batteries for self-powered integrated circuits and sensors is of interest. Many of these electrochemical devices use ionic liquids as the electrolytes, including the all-sodium battery. Ionic liquids are also being used as the absorber in a new absorption refrigeration cycle. The first ever ionic liquid/fluorocarbon absorption refrigeration cycle has been demonstrated and modeled.

Aaron Young is an Associate Professor in Mechanical Engineering and is interested in designing and improving powered orthotic and prosthetic control systems for persons with stroke, neurological injury or amputation. His previous experience includes a post-doctoral fellowship at the University of Michigan in the Human Neuromechanics Lab working with exoskeletons and powered orthoses to augment human performance. He has also worked on the control of upper and lower limb prostheses at the Center for Bionic Medicine (CBM) at the Rehabilitation Institute of Chicago. His master's work at CBM focused on the use of pattern recognition systems using myoelectric (EMG) signals to control upper limb prostheses. His dissertation work at CBM focused on sensory fusion of mechanical and EMG signals to enable an intent recognition system for powered lower limb prostheses for use by persons with a transfemoral amputation.

W. Hong Yeo is a TEDx alumnus and biomechanical engineer. Since 2017, Yeo is an assistant professor of the George W. Woodruff School of Mechanical Engineering and Program Faculty in Bioengineering at the Georgia Institute of Technology. Before joining Georgia Tech, he has worked at Virginia Commonwealth University Medicine and Engineering as an assistant professor from 2014-2016. Yeo received his BS in mechanical engineering from INHA University, South Korea in 2003 and he received his Ph.D. in mechanical engineering and genome sciences at the University of Washington, Seattle in 2011. From 2011-2013, he worked as a postdoctoral research fellow at the Beckman Institute and Frederick Seitz Materials Research Laboratory at the University of Illinois at Urbana-Champaign. His research focuses on the fundamental and applied aspects of nanomechanics, biomolecular interactions, soft materials, and nano-microfabrication for nanoparticle biosensing and unusual electronic system development, with an emphasis on bio-interfaced translational nanoengineering. is an Editorial Board Member of Scientific Reports (Nature Publishing Group) and Scientific Pages of Bioengineering, and Review Editor of Frontiers of Materials (Frontiers Publishing Group). He serves as a technical committee member for IEEE Electronic Components and Technology Conference and Korea Technology Advisory Group at Korea Institute for Advancement of Technology. He has published more than 40 peer-reviewed journal articles, and has three issued and more than five pending patents. His research has been funded by MEDARVA Foundation, Thomas F. and Kate Miller Jeffress Memorial Trust, CooperVision, Inc., Korea Institute of Materials Science, Commonwealth Research Commercialization, and State Council of Virginia. Yeo is a recipient of a number of awards, including BMES Innovation and Career Development Award, Virginia Commercialization Award, Blavatnik Award Nominee, NSF Summer Institute Fellowship, Notable Korean Scientist Awards, and Best Paper/Poster Awards at ASME conferences.

Xia is the Brock Family Chair and Georgia Research Alliance (GRA) Eminent Scholar in Nanomedicine in the Wallace H. Coulter Department of Biomedical Engineering at Georgia Institute of Technology and Emory University, with joint appointments in School of Chemistry and Biochemistry, and School of Chemical and Biomolecular Engineering. Professor Xia received his Ph.D. degree in Physical Chemistry from Harvard University (with Professor George M. Whitesides) in 1996, his M.S. degree in Inorganic Chemistry from University of Pennsylvania (with the late Professor Alan G. MacDiarmid, a Nobel Laureate in Chemistry, 2000) in 1993, and his B.S. degree in Chemical Physics from the University of Science and Technology of China (USTC) in 1987. He came to the United States of America in 1991. Xia has received a number of prestigious awards, including the 2013 Nano Today Award, the ACS National Award in the Chemistry of Materials (2013), Fred Kavli Distinguished Lecture in Nanoscience at the MRS Spring Meeting (2013), AIMBE Fellow (2011), MRS Fellow (2009 ), NIH Director's Pioneer Award (2006), ACS Leo Hendrik Baekeland Award (2005), Camille Dreyfus Teacher Scholar (2002), David and Lucile Packard Fellowship in Science and Engineering (2000), Alfred P. Sloan Research Fellow (2000), NSF Early Career Development Award (2000), ACS Victor K. LaMer Award (1999), and Camille and Henry Dreyfus New Faculty Award (1997). Xia has been an Associate Editor of Nano Letters since 2002, and has served on the Advisory Boards of Particle & Particle Systems Characterization (2013-), Chemical Physics Letters (2013-), Chemistry: A European Journal (2013-), Chinese Journal of Chemistry (2013-), Angewandte Chemie International Edition (2011-), Advanced Healthcare Materials (2011-, inaugural chairman of the advisory board), Accounts of Chemical Research (2010-), Cancer Nanotechnology (2010-), Chemistry: An Asian Journal (2010-), Journal of Biomedical Optics (2010-), Nano Research (2009-), Science of Advanced Materials (2009-), Nano Today (2006-), Chemistry of Materials (2005-2007), Langmuir (2005-2010, 2013-2015), International Journal of Nanotechnology (2004-), and Advanced Functional Materials (2001-). He has also served as a Guest Editor of special issues for Advanced Materials (six times), Advanced Functional Materials (one time), MRS Bulletin (one time), and Accounts of Chemical Research (one time).

 Wang received his B.Sc. from Tsinghua University, Beijing, China, in 2003, and the M.S. and Ph.D. degrees in electrical engineering from the California Institute of Technology, Pasadena, in 2007 and 2009, respectively. During the summer of 2004, he was with Guidant Corporation (later acquired by Boston Scientific), working on accelerometer systems for implantable biomedical devices. In 2010, he joined Intel Corporation. His work at Intel included the next-generation energy-efficient mm-Wave communication link and broadband Semiconductors Font-End-Modules for Wi-Fi systems. In May 2011, he joined Skyworks Solutions, where he led the development of SAW-less integrated filter solutions for low-cost cellular-standard power amplifier Front-End-Modules. In spring 2012, he joined the School of Electrical and Computer Engineering at Georgia Institute of Technology as an assistant professor. Wang is generally interested in innovating and engineering mixed-signal, RF, and mm-Wave integrated systems for wireless communication and bioelectronics applications. He is a member of Sigma Xi, the IEEE Solid-State Circuits Society, and the IEEE Microwave Theory and Techniques Society.

Todd Sulchek is an associate professor in Mechanical Engineering at Georgia Tech where he conducts fundamental and applied research in the field of biophysics. His research program focuses on the mechanical and adhesive properties of cell and biological systems and the development of microsystems to aid in their study. His research employs tools, including, MEMS, microfluidics, imaging, and patterning to understand or enable biological systems. His interests include cancer diagnostics, stem cell biomanufacturing, novel therapeutics, and ultracheap engineering tools. He is a member of the interdisciplinary Institute for Bioengineering and Bioscience. Dr. Sulchek also holds program faculty positions in Bioengineering and Biomedical Engineering and has a courtesy appointment in the School of Biology. He received his Ph.D. from Stanford in Applied Physics under Calvin Quate and received a bachelors in math and physics from Johns Hopkins. He was a postdoc and staff scientist at Lawrence Livermore National Lab. He joined Georgia Tech in 2008 as an Assistant Professor of Mechanical Engineering. He is a recipient of the NSF CAREER award, the BP Junior Faculty Teaching Excellence Award, the Lockheed Inspirational Young Faculty award, and the 2012 Petit Institute Above and Beyond Award. To date he has published 42 journal papers and has filed or been issued 7 patents. Prof. Sulchek is a strong supporter of undergraduate research, and he participates in a variety of undergraduate education activities including the Undergraduate Research Opportunities Program (UROP) and includes over 8 undergraduate authors in the past year.

 In August 2023, Krishnendu Roy joined Vanderbilt University as the Bruce and Bridgitt Evans Dean of Engineering and a University Distinguished Professor in Biomedical Engineering, and Pathology, Microbiology, and Immunology, with a secondary appointment in Chemical and Biomolecular Engineering.

Previously, Roy served as Robert A. Milton Endowed Chair for the Coulter Department of Biomedical Engineering at Georgia Tech. He is also the former Director of the NSF Engineering Research Center (ERC) for Cell Manufacturing Technologies (CMaT), Center for ImmunoEngineering at Georgia Tech, and Marcus Center for Therapeutic Cell Characterization and Manufacturing. 

His overall research interests are in developing novel concepts for stem cell engineering as well as polymer controlled delivery of biological factors, especially for nucleic acid therapeutics (DNA, SiRNA and oligos) and immunoengineering. Currently, his group is involved in the following major areas of research; (a) Developing novel concepts to produce biodegradable surface functionalized micro-and nanoparticles for targeted and sustained delivery of nucleic acids, proteins, peptides and other immune modulators. In particular he is interested in developing multi-agent vaccine delivery systems for cancer and infectious diseases as well as immunotherapies for autoimmune diseases. (b) Creating spatio-temporally patterned polymer scaffolds for directed compartmental differentiation of stem cells into multiple lineages. (c) Engineering an artificial thymic niche for directed differentiation of stem cells into functional, antigen- specific T cells. (e) The development of novel nanoimprinting techniques to generate shape specific, environmentally triggered drug nanocarriers.

Faces of Research - Profile Article