Issue 32, 2015

Wearable temperature sensor based on graphene nanowalls

Abstract

We demonstrate an ultrasensitive wearable temperature sensor prepared using an emerging material, graphene nanowalls (GNWs), and its ease of combination with polydimethylsiloxane (PDMS). Fabrication of the sensor allows for a polymer-assisted transfer method making it considerably facile, biocompatible and cost effective. The resultant device exhibits a positive temperature coefficient of resistivity (TCR) as high as 0.214 °C−1, which is three fold higher than that of conventional counterparts. We attribute this to the excellent stretchability and thermal sensitivity of GNWs together with the large expansion coefficient of PDMS. Moreover, the sensor is capable of monitoring body temperature in real time, and it presents a quite fast response/recovery speed as well as long term stability. Such wearable temperature sensors could constitute a significant step towards integration with the next frontier in personalized healthcare and human–machine interface systems.

Graphical abstract: Wearable temperature sensor based on graphene nanowalls

Supplementary files

Article information

Article type
Paper
Submitted
15 yan 2015
Accepted
23 fev 2015
First published
23 fev 2015

RSC Adv., 2015,5, 25609-25615

Wearable temperature sensor based on graphene nanowalls

J. Yang, D. Wei, L. Tang, X. Song, W. Luo, J. Chu, T. Gao, H. Shi and C. Du, RSC Adv., 2015, 5, 25609 DOI: 10.1039/C5RA00871A

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