Low Operating Voltage Carbon-Graphene Hybrid E-textile for Temperature Sensing
authors Rajan, G; Morgan, JJ; Murphy, C; Alonso, ET; Wade, J; Ott, AK; Russo, S; Alves, H; Craciun, MF; Neves, AIS
nationality International
journal ACS APPLIED MATERIALS & INTERFACES
author keywords e-textiles; wearables; carbon; graphene; temperature sensors; textile fibers
keywords WEARABLE E-TEXTILE; ELECTRICAL-PROPERTIES; DEPENDENCE
abstract Graphene-coated polypropylene (PP) textile fibers are presented for their use as temperature sensors. These temperature sensors show a negative thermal coefficient of resistance (TCR) in a range between 30 and 45 degrees C with good sensitivity and reliability and can operate at voltages as low as 1 V. The analysis of the transient response of the temperature on resistance of different types of graphene produced by chemical vapor deposition (CVD) and shear exfoliation of graphite (SEG) shows that trilayer graphene (TLG) grown on copper by CVD displays better sensitivity due to the better thickness uniformity of the film and that carbon paste provides good contact for the measurements. Along with high sensitivity, TLG on PP shows not only the best response but also better transparency, mechanical stability, and washability compared to SEG. Temperature-dependent Raman analysis reveals that the temperature has no significant effect on the peak frequency of PP and expected effect on graphene in the demonstrated temperature range. The presented results demonstrate that these flexible, lightweight temperature sensors based on TLG with a negative TCR can be easily integrated in fabrics.
publisher AMER CHEMICAL SOC
issn 1944-8244
isbn 1944-8252
year published 2020
volume 12
issue 26
beginning page 29861
ending page 29867
digital object identifier (doi) 10.1021/acsami.0c08397
web of science category Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000546698600097
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journal impact factor 8.758
5 year journal impact factor 8.901
category normalized journal impact factor percentile 86.33
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