Generating usable electric power while sensing glucose. (1st November 2017)

• Record Type: Journal Article
• Authors: Kulkarni, Tanmany; Slaughter, Gymama
• Is Part Of: Micro & nano letters. Volume 12:Number 11(2017)
• Page Start: 834
• Page End: 837
• Publication Date: 2017-11-01
• Subjects: enzymes -- biosensors -- chemical sensors -- capacitive sensors -- charge pump circuits -- energy harvesting -- enzymatic fuel cells; enzymatic glucose biofuel cell -- bilirubin oxidase‐modified biocathode -- pyroloquinoline quinone glucose dehydrogenase‐modified bioanode -- capacitive element -- step‐up DC convertor circuit -- charge pump circuit -- self‐powered glucose biosensor -- electric power generation; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2017.0276
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : Herein a system capable of simultaneously sensing glucose and harnessing sufficient energy to power a digital device is presented. This system is powered by an enzymatic glucose biofuel cell consisting of pyroloquinoline quinone glucose dehydrogenase‐modified bioanode and bilirubin oxidase‐modified biocathode. The electrical parameters from a single biofuel cell were amplified to 1.4 V using a charge pump circuit consisting of a capacitive element that senses glucose. Furthermore, a steady output DC supply of 3.2 V was obtained by interfacing a step‐up DC convertor circuit to the charge pump circuit. Such a system simultaneously senses glucose and harnesses energy in the presence of various glucose concentrations. The self‐powered glucose biosensor exhibited an improved sensitivity of 86.42 Hz/cm 2 mM with a linear range extending to 20 mM when operating a digital device simultaneously. This is a 3.7‐fold increase in sensor sensitivity when compared with previous self‐powered glucose biosensors. This novel self‐powered glucose biosensing system shows a promising future for powering implantable devices and assessing patient health.