Document Type

Article

Publication Date

2019

Publication Title

Energies

Volume

12

Issue

5

Pages

825 (1-10)

DOI

10.3390/en12050825

Abstract

This work presents the characterization of a self-powered glucose biosensor using individual sequential assays of human plasma glucose obtained from diabetic patients. The self-powered glucose biosensor is exploited to optimize the assay parameters for sensing plasma glucose levels. In particular, the biofuel cell component of the system at pH 7.4, 37 °C generates a power density directly proportional to plasma glucose and exhibited a maximum power density of 0.462 mW·cm−2 at a cell voltage of 0.213 V in 5 mM plasma glucose. Plasma glucose is further sensed by monitoring the charge/discharge frequency (Hz) of the integrated capacitor functioning as the transducer. With this method, the plasma glucose is quantitatively detected in 100 microliters of human plasma with unprecedented sensitivity, as high as 104.51 ± 0.7 Hz·mM−1·cm−2 and a detection limit of 2.31 ± 0.3 mM. The results suggest the possibility to sense human plasma glucose at clinically relevant concentrations without the use of an external power source.

Rights

© 2019 by the authors.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) license.

Original Publication Citation

Slaughter, G., & Kulkarni, T. (2019). Detection of human plasma glucose using a self-powered glucose biosensor. Energies, 12(5), 1-10, Article 825. https://doi.org/10.3390/en12050825

ORCID

0000-0002-4307-091X (Slaughter)

Download

Share

COinS