Thermally stable and highly conductive rGO/Ag nanocomposites exhibiting near zero TCR behaviour

Fabrication of wearable sensors using composites with zero temperature coefficient of resistance (TCR) as sensing materials is an effective strategy to eliminate temperature interference. The zero TCR feature can be realized by choosing specific composites that contain two elements with positive and...

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Bibliographic Details
Main Authors: Charlotte, Merlin R., Nair, Akhila S., Viannie, Leema Rose
Format: Conference Proceeding
Language:English
Subjects:
Aspect ratio
Electrical properties
Electrical resistivity
Graphene
Low temperature
Nanocomposites
Nanowires
Silver
Thermal stability
Thermodynamic properties
Zero temperature coefficient
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Summary:Fabrication of wearable sensors using composites with zero temperature coefficient of resistance (TCR) as sensing materials is an effective strategy to eliminate temperature interference. The zero TCR feature can be realized by choosing specific composites that contain two elements with positive and negative TCR as sensing materials. Metal nanowires exhibit an increase in resistance with temperature (positive TCR) whereas reduced graphene oxide (rGO) exhibits an opposite behaviour (negative TCR). Zero TCR for the composite can be achieved by tuning the composition such that the TCRs of the metal nanowires and rGO cancels out. Herein, we use silver nanowires owing to its high conductivity, good mechanical and electrical properties and rGO due to its zero bandgap. AgNWs were synthesized using low temperature hydrothermal method having average aspect ratio about 17 and an ink is prepared. The structural, morphological and thermal properties are investigated.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0178202