Constantine Dovrolis

Constantine Dovrolis
constantine@gatech.edu
For more than a decade, Constantine Dovrolis has been exploring the evolution of our interconnected world. Dovrolis serves as a Professor in the School of Computer Science, College of Computing at the Georgia Institute of Technology and is an affiliate of the Institute for Information Security & Privacy. He received his Bachelor's of Computer Engineering from the Technical University of Crete in 1995; Master’s degree from the University of Rochester in 1996, and his Doctoral degree from the University of Wisconsin-Madison in 2000.  Prior to joining Georgia Tech in August 2002, Dovrolis held visiting positions at Thomson Research in Paris, Simula Research in Oslo, and FORTH in Crete. His current research focuses on the evolution of the Internet, Internet economics, and on applications of network measurement.  He also is interested in cross-disciplinary applications of network science as it relates to biology, clIMaTe science and neuroscience. Dovrolis has served as an editor for the IEEE/ACM’s Transactions on Networking, the ACM Communications Review, and he served as the program co-chair for PAM'05, IMC'07, CoNEXT'11, and as the general chair for HotNets'07.  He was honored with the National Science Foundation CAREER Award in 2003.                                                   
Professor
Phone
404-385-4205
Office
Klaus 3346
Additional Research
Data Mining & Analytics; IT Economics; Internet Infrastructure & Operating Systems Network science is an emerging discipline focusing on the analysis and design of complex systems that can be modeled as networks. During the last decade or so network science has attracted physicists, mathematicians, biologists, neuroscientists, engineers, and of course computer scientists. I believe that this area has the potential to create major scientific breakthroughs, especially because it is highly interdisciplinary. We have applied network science methods to investigate the "hourglass effect" in developmental biology. The developmental hourglass' describes a pattern of increasing morphological divergence towards earlier and later embryonic development, separated by a period of significant conservation across distant species (the "phylotypic stage''). Recent studies have found evidence in support of the hourglass effect at the genomic level. For instance, the phylotypic stage expresses the oldest and most conserved transcriptomes. However, the regulatory mechanism that causes the hourglass pattern remains an open question. We have used an evolutionary model of regulatory gene interactions during development to identify the conditions under which the hourglass effect can emerge in a general setting. The model focuses on the hierarchical gene regulatory network that controls the developmental process, and on the evolution of a population under random perturbations in the structure of that network. The model predicts, under fairly general assumptions, the emergence of an hourglass pattern in the structure of a temporal representation of the underlying gene regulatory network. The evolutionary age of the corresponding genes also follows an hourglass pattern, with the oldest genes concentrated at the hourglass waist. The key behind the hourglass effect is that developmental regulators should have an increasingly specific function as development progresses. Analysis of developmental gene expression profiles from Drosophila melanogaster and Arabidopsis thaliana provide consistent results with our theoretical predictions. We are currently working on the inference and analysis of functional and brain networks. More information about this project will be posted soon.
IRI and Role
Bioengineering and Bioscience > Faculty
Data Engineering and Science > Affiliated Faculty
Data Engineering and Science
Bioengineering and Bioscience
University, College, and School/Department
Georgia Institute of Technology > College of Computing > School of Computer Science

Simone Douglas-Green

Simone Douglas-Green

Dr. Simone Douglas-Green (@DrBlackBoots on Twitter/X and Instagram) is a new Assistant Professor in the Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, where she has been named a BME Distinguished Faculty Fellow. She received her B.S. in Biomedical Engineering from the University of Miami, and her Ph.D. in Biomedical Engineering from the joint program at Georgia Tech and Emory University. Dr. Douglas-Green’s professional and scholarly development as a doctoral and postdoctoral trainee has been supported by a number of awards including the Alfred P. Sloan Foundation's Minority Ph.D. (MPHD) Fellowship, NASEM Ford Foundation Postdoctoral Fellowship, and Burroughs Wellcome Fund Postdoctoral Enrichment Program (PDEP). The Douglas-Green Lab focuses on developing tools/techniques to study how biology interacts with nanoparticles with an emphasis on understanding person and disease specific proteins coronas. Her goal is to train the next generation of engineers to be “EPIC”- engineering with purpose, inclusivity and compassion.

Assistant Professor
Office
UAW 4108
IRI and Role
Bioengineering and Bioscience > Faculty
Bioengineering and Bioscience

J. Brandon Dixon

J. Brandon Dixon
dixon@gatech.edu

Dr. Dixon began at Georgia Tech in August 2009 as an Assistant Professor. Prior to his current appointment, he was a staff scientist at Ecole Polytechnique Federal de Lausanne (Swiss Federal Institute of Technology - Lausanne) doing research on tissue-engineered models of the lymphatic system. Dr. Dixon received his Ph.D. in biomedical engineering while working in the Optical Biosensing Laboratory, where he developed an imaging system for measuring lymphatic flow and estimating wall shear stress in contracting lymphatic vessels. 

Dr. Dixon's research focuses on elucidating and quantifying the molecular aspects that control lymphatic function as they respond to the dynamically changing mechanical environment they encounter in the body. Through the use of tissue-engineered model systems and animal models, our research is shedding light on key functions of lymphatic transport, and the consequence of disease on these functions. One such function is the lymphatic transport of dietary lipid from the intestine to the circulation. Recent evidence from our lab suggests that this process involves active uptake into lymphatics by the lymphatic endothelial cells. There are currently no efficacious cures for people suffering from lymphedema, and the molecular details connecting lymphedema severity with clinically observed obesity and lipid accumulation are unknown. Knowledge of these mechanisms will provide insight for planning treatment and prevention strategies for people facing lipid-lymphatic related diseases. 

Intrinsic to the lymphatic system are the varying mechanical forces (i.e., stretch, fluid shear stress) that the vessels encounter as they seek to maintain interstitial fluid balance and promote crucial transport functions, such as lipid transport and immune cell trafficking. Thus, we are also interested in understanding the nature of these forces in both healthy and disease states, such as lymphedema, in order to probe the biological response of the lymphatic system to mechanical forces. The complexity of these questions requires the development of new tools and technologies in tissue engineering and imaging. In the context of exploring lymphatic physiology, students in Dr. Dixon's laboratory learn to weave together techniques in molecular and cell biology, biomechanics, imaging, computer programming, and image and signal processing to provide insight into the regulation of lymphatic physiology. Students in the lab also have the opportunity to work in an interdisciplinary environment, as we collaborate with clinicians, life scientists, and other engineers, thus preparing the student for a career in academia and basic science research, or a career in industry.

Professor
Phone
404-385-3915
Office
Petit Biotechnology Building, Office 2312
IRI and Role
Bioengineering and Bioscience > Faculty
Bioengineering and Bioscience
University, College, and School/Department
Georgia Institute of Technology > College of Engineering > Woodruff School of Mechanical Engineering

Stephen Diggle

Stephen Diggle
stephen.diggle@biosci.gatech.edu

I graduated in Biological Sciences (B.Sc, University of Salford, 1997) prior to undertaking a Ph.D in molecular microbiology studying quorum sensing in Pseudomonas aeruginosa (University of Nottingham, 2001). I worked as a Postdoctoral Fellow at Nottingham on both EU and BBSRC funded grants, before obtaining a Royal Society University Fellowship (2006-2014). I was promoted to Associate Professor in 2013. In 2017 I moved as an Associate Professor to the School of Biological Sciences at Georgia Tech. I was promoted to Full Professor in 2022. I was appointed as the Director of the Center for Microbial Dynamics and Infection in January 2023. 

I currently serve as the Deputy Editor in Chief of Microbiology, where I have previously served as editor and senior editor. I have also previously served on the editorial boards of FEMS Microbiology Letters, BMC Microbiology, Microbiology Open and Royal Society Open Science. I was an elected member of the Microbiology Society Council (2012-2016) and also served on their conference and policy committees. I was selected to be an American Society for Microbiology Distinguished Lecturer (2021-2023) and was elected to the American Academy of Microbiology in 2023. 

In my spare time I play bass guitar. I recorded some original music in a band called Meaner and I currently play in a covers band called The Variants of Concern. I also have a long-standing interest in the works of J.R.R. Tolkien.

Associate Professor
Phone
404-385-5634
Office
Cherry Emerson A110
Additional Research
I am interested in cooperation and communication in microbes and how these are related to virulence, biofilms and antimicrobial resistance. I have a long standing interest in understanding how the opportunistic pathogen Pseudomonas aeruginosa causes disease, and am especially interested in how this organism evolves during chronic infections such as those found in cystic fibrosis lungs and chronic wounds.
IRI and Role
Bioengineering and Bioscience > Faculty
Bioengineering and Bioscience
University, College, and School/Department
Georgia Institute of Technology > College of Sciences > School of Biological Sciences

Robert Dickson

Robert Dickson
robert.dickson@chemistry.gatech.edu

Dr. Dickson is the Vassar Woolley Professor of Chemistry & Biochemistry and has been at Georgia Tech since 1998. He was a Senior Editor of The Journal of Physical Chemistry from 2010-2021, and his research has been continuously funded (primarily from NIH) since 2000. Dr. Dickson has developed quantitative bio imaging and signal recovery/modulation schemes for improved imaging of biological processes and detection of medical pathologies. His work on fluorescent molecule development and photoswitching of green fluorescent proteins was recognized as a key paper for W.E. Moerner’s 2014 Nobel Prize in Chemistry. Recently, Dr. Dickson’s lab has developed rapid susceptibility testing of bacteria causing blood stream infections. Their rapid recovery methods, coupled with rigorous multidimensional statistics and machine learning have led to very simple, highly accurate and fast methods for determining the appropriate treatment within a few hours after positive blood cultures. These hold significant potential for drastically improving patient outcomes and reducing the proliferation of antimicrobial resistance.

Professor
Phone
404-894-4007
Office
MoSE G209A
Additional Research
Dr. Dickson's group is developing novel spectroscopic, statistical, and imagingtechnologies for the study of dynamics in biology and medicine.
IRI and Role
Bioengineering and Bioscience > Faculty
Data Engineering and Science > Affiliated Faculty
Data Engineering and Science
Bioengineering and Bioscience
University, College, and School/Department
Georgia Institute of Technology > College of Sciences > School of Chemistry & Biochemistry

Thomas DiChristina

Thomas DiChristina
thomas.dichristina@biology.gatech.edu

Thomas DiChristina, Ph.D., received a BS in Chemical Engineering from the University of Rochester (NY) in 1982, a MS in Chemistry from the University of Bordeaux (France) in 1984, a Ph.D. in Environmental Engineering Science from the California Institute of Technology (CA) in 1989, and a Postdoctoral Fellowship from the Woods Hole Oceanographic Institution (MA) in 1993. DiChristina has been at Professor of Microbiology in the School of Biological Sciences at Georgia Tech for 29 years. 

Professor, Microbiology, School of Biological Sciences
Phone
404.556.6829
Office
Ford Environmental and Technology Building, Room 1240
IRI and Role
Bioengineering and Bioscience > Faculty
Bioengineering and Bioscience

Shaheen Dewji, Ph.D.

Shaheen Dewji, Ph.D.
shaheen.dewji@gatech.edu

Shaheen Azim Dewji, Ph.D., (she/her/hers) is an Assistant Professor in the Nuclear & Radiological Engineering and Medical Physics Programs at the Georgia Institute of Technology, where she leads the Radiological Engineering, Detection, and Dosimetry (RED²) research group. Dewji joined Georgia Tech following three years as faculty at Texas A&M University in the Department of Nuclear Engineering, and as a Faculty Fellow of the Center for Nuclear Security Science and Policy Initiatives (NSSPI). In her prior role at Oak Ridge National Laboratory, where she remained for almost 9 years, Dewji was Radiological Scientist in the Center for Radiation Protection Knowledge. Her research interests include development of dose coefficients, shielding design, and nuclear material detection assay using gamma-ray spectroscopy. Her recent work has focused on associated challenges in uncertainty quantification in dose estimation/reconstruction associated with the external exposure and internal uptake of radionuclides associated with applications of emergency response, defense, nuclear medicine, and occupational/public safety using Monte Carlo radiation transport codes and internal dose modeling. Dewji completed her Masters and Ph.D. degrees in Nuclear and Radiological Engineering at the Georgia Institute of Technology in Atlanta, GA and was a fellow of the Sam Nunn Security Program. She received her Bachelor of Science in Physics from the University of British Columbia. Dewji currently serves on the National Academies of Science, Engineering, and Medicine – Nuclear and Radiation Studies Board and is a member of the Board of Directors for both the American Nuclear Society and Health Physics Society.
   

Assistant Professor
Phone
404.894.5800
Office
Boggs 3-15
IRI and Role
Bioengineering and Bioscience > Faculty
Bioengineering and Bioscience
University, College, and School/Department
Georgia Institute of Technology > College of Engineering > Woodruff School of Mechanical Engineering

Jaydev Desai

Jaydev Desai
jaydev@gatech.edu

Jaydev P. Desai, Ph.D, is currently a Professor and BME Distinguished Faculty Fellow in the Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech. Prior to joining Georgia Tech in August 2016, he was a Professor in the Department of Mechanical Engineering at the University of Maryland, College Park (UMCP). He completed his undergraduate studies from the Indian Institute of Technology, Bombay, India, in 1993. He received his M.A. in Mathematics in 1997, M.S. and Ph.D. in Mechanical Engineering and Applied Mechanics in 1995 and 1998 respectively, all from the University of Pennsylvania. He was also a Post-Doctoral Fellow in the Division of Engineering and Applied Sciences at Harvard University. He is a recipient of several NIH R01 grants, NSF CAREER award, and was also the lead inventor on the "Outstanding Invention of 2007 in Physical Science Category" at the University of Maryland, College Park. He is also the recipient of the Ralph R. Teetor Educational Award. In 2011, he was an invited speaker at the National Academy of Sciences "Distinctive Voices" seminar series on the topic of "Robot-Assisted Neurosurgery" at the Beckman Center. He was also invited to attend the National Academy of Engineering's 2011 U.S. Frontiers of Engineering Symposium. He has over 150 publications, is the founding Editor-in-Chief of the Journal of Medical Robotics Research, and Editor-in-Chief of the Encyclopedia of Medical Robotics (currently in preparation). His research interests are primarily in the area of image-guided surgical robotics, rehabilitation robotics, cancer diagnosis at the micro-scale, and rehabilitation robotics. He is a Fellow of the ASME and AIMBE.

Professor and Distinguished Faculty Fellow, Wallace H. Coulter Department of Biomedical Engineering
Associate Director, Institute for Robotics and Intelligent Machines
Director, Georgia Center for Medical Robotics
Phone
404.385.5381
Office
UA Whitaker Room 3112
Additional Research

Image-guided surgical robotics, Rehabilitation robotics; Cancer diagnosis at the micro-scale.

IRI and Role
Bioengineering and Bioscience > Faculty
Robotics > Core Faculty
Robotics
Bioengineering and Bioscience
University, College, and School/Department
Georgia Institute of Technology > College of Engineering > Coulter Department of Biomedical Engineering

F. Levent Degertekin

F. Levent Degertekin
levent.degertekin@me.gatech.edu

Dr. F. Levent Degertekin received his B.S. degree in 1989 from M.E.T.U, Turkey; M.S. degree in 1991 from Bilkent University, Turkey; and his Ph.D. in 1997 from Stanford University, California, all in electrical engineering. His M.S. thesis was on acoustic microscopy, and his Ph.D. work was on ultrasonic sensors for semiconductor processing, and wave propagation in layered media. He worked as an engineering research associate at the Ginzton Laboratory at Stanford University from 1997 until joining the George W. Woodruff School of Mechanical Engineering at Georgia Tech in spring 2000. 

He has published over 150 papers in international journals and conference proceedings. He holds 20 U.S. patents, and received an NSF CAREER Award for his work on atomic force microscopy in 2004. Dr. Degertekin served on the editorial board of the IEEE Sensors Journal, and on the technical program committees of several international conferences on ultrasonics, sensors, and micro-opto-mechanical systems (MOEMS).

Professor
George W. Woodruff Chair in Mechanical Systems
Phone
404-385-1357
Office
Love 311B
Additional Research

Degertekin's research focuses on understanding of physical phenomena in acoustics and optics, and utilizing this knowledge creatively in the form of microfabricated devices. The research interests span several fields including atomic force microscopy (AFM), micromachined opto-acoustic devices, ultrasound imaging, bioanalytical instrumentation, and optical metrology. Dr. Degertekin's research group, in collaboration with an array of collaborators, has developed innovative devices for applications such as nanoscale material characterization and fast imaging, hearing aid microphones, intravascular imaging arrays for cardiology, bioanalytical mass spectrometry, and microscale parallel interferometers for metrology.

IRI and Role
Bioengineering and Bioscience > Faculty
Bioengineering and Bioscience
University, College, and School/Department
Georgia Institute of Technology > College of Engineering > Woodruff School of Mechanical Engineering