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Optical Bio-Sensing Laboratory

Texas A&M University College of Engineering

PhD

Scott Phillips

Scott Phillips is a Ph.D. candidate in the Department of Biomedical Engineering who joined the lab in 2025. His research focuses on designing novel wearable biosensors to monitor neurological motor disease progression with specialties in EEG and gait analysis. He is experienced in the full research cycle starting with designing and fabricating sensors, designing experiments, drafting IRB protocols, collecting and analyzing human subject data, validating results through statistical and signal processing, and presenting results to the scientific community. Before coming to Texas A&M University (TAMU), he worked as a computational bioinformatics programmer at the Moores Cancer Center at University of California San Diego (UCSD). He holds a B.S. in Human Biology from UCSD and holds a M.S. in Biomedical Engineering from TAMU.

Scott Phillips LinkedIn Profile

 

Aubrey Devries

Aubrey is a Ph.D. student in Biomedical Engineering at Texas A&M University. She joined Dr. Coté’s Optical and Bio-Sensing Laboratory in June 2023 as an undergraduate researcher and transitioned to a graduate researcher in May 2024. Her research focuses on the development and evaluation of multimodal wearable biosensing technologies for continuous cardiovascular monitoring. Her work investigates the integration and performance of sensing modalities, including photoplethysmography, electrocardiography, and strain-gauge sensors, for measuring physiological metrics such as heart rate, respiratory rate, blood oxygen saturation, and cuffless blood pressure in wearable devices. This research aims to advance reliable, noninvasive health-monitoring technologies that can operate during everyday activities and under dynamic conditions. In addition to sensor development and physiological signal analysis, Aubrey has developed expertise in embedded systems and device prototyping using Arduino-based platforms, mechanical design in SolidWorks, and data analysis in MATLAB and Python. Her work also includes experimental protocol development, signal processing, and hands-on device fabrication, including PCB assembly, soldering, and wearable device integration. Aubrey plays a leadership role in the laboratory, supervising and mentoring undergraduate researchers on wearable device development projects and guiding experimental design, device prototyping, and data collection efforts. She has also contributed to intellectual property development within the lab and is an inventor on patents related to wearable biomedical sensing technologies.

Aubrey Devries’ LinkedIn Profile

Phoebe Adjei-Frimpong

Phoebe Adjei-Frimpong is a Ph.D. student in Biomedical Engineering at Texas A&M University who joined the Optical and Bio-Sensing Laboratory in Fall 2024. Her research focuses on the development of affordable point-of-care diagnostic technologies designed for use in low-resource and underserved settings. Her current work explores non-enzymatic isothermal amplification strategies combined with paper-based microfluidic platforms to enable highly sensitive detection of cardiac biomarkers. This research aims to advance accessible diagnostic tools capable of providing rapid, reliable health assessments where conventional laboratory infrastructure is limited. Phoebe earned her B.S. in Biomedical Engineering from Kwame Nkrumah University of Science and Technology (KNUST) in Ghana. She is passionate about developing translational biomedical technologies that expand access to early disease detection and improve healthcare outcomes globally.

Phoebe Adjei-Frimpong’s LinkedIn Profile

Ralph Valentin

Ralph Valentin is a Doctor of Engineering (D.Eng.) student in the Department of Multidisciplinary Engineering, and he will join the Optical Bio-Sensing Lab (OBSL) in Fall 2024. His focus will be on developing wearable and noninvasive point-of-care biomedical devices to monitor physiological parameters. Prior to pursuing his D.Eng., he completed his Bachelor of Science in Biomedical Engineering and Master of Science in Engineering Management at Florida International University. With over 5 professional years of cumulative technical and leadership experience, his expertise lies in project management, design verification and validation, design control, test methods development, process development, and improvement. Ralph has also served in the United States Military as both an enlisted member and a commissioned officer. He is currently an Engineer Officer in the Army Reserve.

Ralph Valentin’s LinkedIn Profile

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