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Dr. Gymama Slaughter

Bioelectronics Laboratory and University of Maryland Baltiomore County, USA

  

Talk Title
 Glucose bioenergy harnessing

Talk Abstract
 

We describe herein the construction of a glucose biosensor system that senses glucose without the use of a potentiostat and harness usable electrical energy from glucose to power a digital electronic device simultaneously. This system is powered by a single enzymatic glucose biofuel cell comprising a highly dense mesh network of multi-walled carbon nanotubes and enzymes that results in the immobilization and direct electrical connection of the enzymes. The bioanode is functionalized with pyroloquinoline quinone glucose dehydrogenase, while the biocathode is functionalized with bilirubin oxidase. The glucose biofuel cell assembly and its performance were investigated under physiological conditions (pH 7.4 and 37 °C) at which a maximum open circuit voltage of 548.2 mV, short circuit current density of 7.19 mA/cm2 and peak power density of 1.475 mA/cm2 were obtained in 20 mM glucose. The nominal electrical power generated from the single glucose biofuel cell (~ 548 mV) was amplified to 3.2 V using a two stage electrical power amplification circuit and a capacitive element functioning as a glucose transducer. The self-powered glucose biosensor exhibited a linear dynamic range of 1 mM – 45 mM and a high sensitivity of 92.51 Hz/cm2.mM when simultaneously sensing glucose and powering a glucometer. Additionally, the system demonstrated excellent operational stability over a 53-day period and can be considered to be suitable for advanced applications in powering implantable. 

Short Biography

Gymama Slaughter is an Associate Professor of Computer Engineering. She received her B.S. in Chemistry in 2001, M.S. in Chemical Engineering in 2003, and a Ph.D. in Computer Engineering from the Virginia Commonwealth University in 2005. She then joined Virginia State University as an Assistant Professor in Computer Engineering and Director of the Center for Biosystems and Engineering. Finally, she joined the University of Maryland Baltimore County as Assistant Professor in Computer Engineering in August 2010. She is currently the Director of the Bioelectronics Laboratory Group and oversees research and research outreach programs in the BEL Group. More recently, she was selected to participated in the Office of Naval Research Sabbatical Leave Program at the Naval Research Laboratory’s Center for Bio/Molecular Science and Engineering (CBMSE) where she is currently serving as CBMSE Visiting Scholar and conducting research on the development of flexible biodegradable biological and chemical sensors. Slaughter develops and applies sensor-processor platforms, focusing on innovative contributions to identifying a pathway to embed sensing and processing functions in the same device to eliminate bottlenecks arising from communication between the sensor, transducer and processor, thus, resulting in ultra-fast and ultra-low power devices. Her research has been supported by the National Science Foundation, Department of Army, TEDCO Maryland Innovative Initiative, and the Maryland Industry Partnership. Her research interests include biosensors, microsensors, microfabrication technology, and BioMEMS. She is the recipient of the National Science Foundation’s prestigious CAREER AWARD. The award recognizes junior faculty who exemplify the role of teacherscholar through outstanding research, excellent education and the integration of education and research.

 
Talk Keywords
Glucose, biochemical energy, electrical power.
 
Target Audience
Students, Post doctoral researchers, Industry partners, University faculties
 
Speaker-intro video
TBA 
 

 

The International Conference on Innovative Applied Energy (IAPE’18)