Our Team



Brian Stoner, Ph.D.

Director and Principal Investigator

Brian Stoner, Ph.D.; Principal Investigator (PI), is Director of Duke’s Center for WaSH-AID (Water, Sanitation, Hygiene and Infectious Disease) and Visiting Distinguished Fellow in Global Health Technologies at RTI International. He is also a Research Professor in the Dept. of Electrical and Computer Engineering at Duke University with a secondary appointment with Duke's Global Health Institute, a materials scientist with expertise in the synthesis, processing, and characterization of materials using electrical, electrochemical and plasma techniques. At Duke, he leads multidisciplinary programs in Global Health Technologies with an emphasis on integrating expertise across engineering, social science, economics and policy to address complex global challenges. He holds 28 U.S. patents related to novel microelectronic materials and systems, and has authored or co-authored two book chapters and more than 200 scientific publications. Visit Scholars@Duke for more information.

Email: stoner@duke.edu


Jeffrey T Glass, Ph.D., M.B.A.

Co-Director & Entrepreneurship Lead

Jeffrey T. Glass, Ph.D., M.B.A.; Co-PI & Entrepreneurship Lead, is the Senior Associate Dean for Education and Learning Innovation, a Professor in the Electrical and Computer Engineering Department, and the Hogg Family Director of Engineering Management and Entrepreneurship in the Pratt School of Engineering at Duke University. He has been a member of advisory boards for several start-ups, the interim CTO of a start-up during a leadership transition, conducted due diligence for venture capital firms, consulted for fortune 500 companies, and testified as an expert witness in patent litigation. He has published over 140 papers and book chapters, edited six books, is a co-inventor on 15 patents and is an ISI Highly Cited Researcher in Materials Science. Visit Scholars@Duke for more information.

Email: jeff.glass@duke.edu

Team Members


Sonia Grego, Ph.D.

Associate Director and Associate Research Professor

Sonia Grego, Ph.D., directs the global field testing of transformative sanitation technologies prototypes, particularly in India, and leads the diagnostics and sensor technology programmatic area. She has been developing engineering innovation for health for 15 years with expertise in sensors, systems miniaturization and tissue bioengineering.  She is also the Director of the Smart Toilet Lab. Her research interests include sensors for digital sanitation solutions and technologies for early detection of disease, with emphasis on smart toilets for diagnostics at the individual and community level.  She has served on NIH review panels for 10 years, served as co-chair of multiple symposia, co-authored more than 50 scientific publications and has been awarded four patents.  Visit Scholars@Duke for more information.

Email: sonia.grego@duke.edu


Brian T. Hawkins, Ph.D.

Associate Director of Technology Development and Associate Research Professor

Brian Hawkins, Ph.D. oversees multiple research and development programs and coordinates technology partnerships with other academic institutions and companies. His research interests include processes for household-scale water treatment and reuse, nutrient remediation, and energy recovery. Current projects include leading the Center’s efforts on several Small Business Innovation Research (SBIR) programs for the Environmental Protection Agency with Triangle Environmental, serving as the lab testing lead for the Generation 2 Reinvented Toilet program, and leading the development and commercialization efforts on the Reclaimer. Prior to joining Duke, he worked at RTI International and the University of Washington School of Medicine, and completed a postdoctoral fellowship at the National Institute of Environmental Health Sciences. He holds a B.S. in Chemistry from the Georgia Institute of Technology and a Ph.D. in Neuroscience from the University of Arizona. He is a co-author of more than 40 peer-reviewed research publications, review articles, and book chapters, and serves on the Editorial Board of Water and Environment Journal. Visit Scholars@Duke for more information.

Email: brian.hawkins@duke.edu

Shurgot, M.A.

Mara Shurgot, M.A.

Associate Director of Communications

Mara Shurgot, M.A., joined the Center in 2018 and leads outreach and communications. Prior to joining WaSH-AID, she worked at the Duke University Talent Identification Program (Duke TIP), the last seven years as director of international programs leading educational initiatives in India and China. She earned a Master of Arts in Writing from the University of San Francisco and an undergraduate degree in English from the University of California, Los Angeles.

Email: mara.shurgot@duke.edu

Ngaboyamahina, Ph.D., M.B.A.

Edgard Ngaboyamahina, Ph.D., M.B.A.

Research Scientist

Edgard Ngaboyamahina, Ph.D., M.B.A., is a Research Scientist in the Department of Electrical and Computer Engineering and the Center for WaSH-AID, in the Pratt School of Engineering at Duke University. Dr Ngaboyamahina leads R&D activities that encompass wastewater disinfection and malodor control. His research has focused on the growth and characterization of thin films for energy and water treatment applications, with a focus on electrochemical techniques. Prior to moving to the United States, he worked with established French companies. With the Commercial Strategic Directorate of Eléctricité de France (EDF), the main French electricity provider, he analyzed the White certificates scheme from an economic perspective. At the Atomic Energy and Alternative Energies Commission (CEA), he developed new materials for electrical vehicles’ batteries. Dr. Ngaboyamahina received his Ph.D. in Process Engineering and Advanced Technologies from Pierre and Marie Curie University. He completed in parallel a Master of Business Administration (MBA) from the Collège des Ingénieurs in Paris (France). He also holds two MSc degrees in Physicochemical Process Engineering and Analytical Sciences and Instrumentation from Paul Sabatier University in Toulouse (France). Dr. Ngaboyamahina is also interested in entrepreneurial activities and in understanding the various models of commercialization in resource constrained environments (e.g., so-called “bottom of the pyramid” approaches), especially those applied to sanitation technology. In the early stages of his career, he created a recording label, the African Music Enhancement Records (AMER), dedicated to the promotion of urban African music.

Email: edgard.ngaboyamahina@duke.edu

Trotochaud, Ph.D.

Lena Trotochaud, Ph.D.

Research Scientist

Lena Trotochaud, Ph.D., joined the Center for WaSH-AID in 2018 as a Research Scientist with the liquid treatment team. Her current research involves exploring different materials and methods for the effective and low-cost capture of molecules suspended in liquids - such as contaminants in water or nutrients in waste. Prior to joining Duke, Lena was a postdoctoral researcher at Lawrence Berkeley National Laboratory, where she was recognized as one of the “2018 Women @ The Lab” awardees. Lena earned her B.S. (Chemistry) at the University of Georgia and her Ph.D. (Chemistry) at the University of Oregon. Please feel free to contact Lena for opportunities involving K-12 educational outreach, mentoring, and public engagement with scientists. Publications

Email: lena.trotochaud@duke.edu


Graham H. Miller

Associate in Research

Graham Miller joined the WaSH-AID team in November of 2019 as an Associate in Research. Prior to joining the team, he spent three years working on sanitation related projects at Duke University, primarily the Supercritical Water Oxidation plant and the Anaerobic Digestion – Pasteurization Latrine. Graham’s expertise in these projects ranged from installation and operations of systems to data analysis. He earned a B.S. in Mechanical Engineering from the University of Florida.

Email: graham.h.miller@duke.edu

Welling, M.S.

Claire Welling, M.S.

Associate in Research

Claire Welling, M.S., serves as an Associate in Research at Duke working under the Sanitation Technology Platform supporting field testing of transformative sanitation technologies prototypes, including data analysis, record keeping, and preparing written communication for partners and clients. Prior to working with Duke, Claire worked for Durham County focusing on the local municipal wastewater treatment plant and sewer collection system, overseeing upgrades, developing a resiliency and redundancy program, and maintaining a GIS model of the collection system. She received an M.S. in Environmental Engineering from Virginia Tech focused on wastewater treatment process optimization. 

Email: claire.welling@duke.edu


August Frechette

Graduate Researcher

August Frechette is an environmentally-minded mechanical engineering graduate student at Duke University's Pratt School of Engineering. Her research involves pore-scale fluid dynamics in mechanical filtration membranes - a focus driven by the need to increase the longevity of filtration membranes exposed to dirty waste streams. Broadly, she is interested in ground and surface water treatment via membrane filtration for the purposes of habitation remediation and conservation. 

Email: august.frechette@duke.edu

Vasquez Sanchez

Mariana Vasquez Sanchez

Mariana Vasquez Sanchez is a Ph.D. candidate in the Department of Electrical and Computer Engineering at the Pratt School of Engineering. She is also part of the Nanomaterials and Thin Films lab. Her research focuses on (electro)chemical processes at solid/liquid interfaces in materials for sanitation and neural stimulation. Broadly, her research interests are electrochemical engineering, nanomaterials characterization, and sanitation technologies. She received a full-ride scholarship from the University of Kansas and the Institute of International Education, where she earn a B.S. in physics and a minor in mathematics.

Email: mariana.vasquez@duke.edu


Jin Zhou

Graduate Researcher

Jin Zhou is a Ph.D. student in the Department of Electrical and Computer Engineering in the Pratt School of Engineering at Duke University. His current research interests include health data science, time-series analysis and computer vision.

Email: jin.zhou@duke.edu

Previous Students

  • Caitlin Niven, Research Assistant, Duke University (2018 - 2020)
  • Peter Coggan, Research Assistant, Case Western Reserve (Summer 2018 and 2020)
  • Thandolwethu Dlamini (Shakes), Pratt Fellow, Duke University (2018 - 2020)
  • Kayana Tyson, Research Assistant, Duke University (2019-2020)
  • Michael Dryzer, Research Assistant, Johns Hopkins University (2017 - 2019)
  • Jimmy O. Thostenson, PhD Student, Duke University (2018)
  • Angad Ozarkar, MEM student, Duke University (2018)
  • Samuel Phiri, REU student, Michigan State University (Summer 2018)
  • Abhyudaya Adulkar, REU student, IIT Bombay (Summer 2018)
  • Brielle Januszewski, REU student, Arizona State University (Summer 2018)
  • Mikayla Stoner, Research Assistant (2018)
  • Riley Luettgen, Summer Intern, Univeristy of Wisconsin (2018)