We have developed a flexible reduced graphene oxide (RGO) temperature sensor on filter paper based cellulose substrate using vacuum filtration method. One of the most commonly used synthesized methods for RGO thin films is vacuum filtration process. It has several advantages such as simple operation and good controllability. The structural analysis was carried out by FE-SEM, in which the surface morphology images confirm the formation of RGO nanostructures on the filter paper substrate. It was observed that the pores of the filter paper were completely filled with the RGO material during the filtration process, subsequently the formation of continuous RGO thin films. As a results, the RGO films exhibits a piezoresistive property. The resulted RGO based films on the filter paper reveals the semiconducting behavior having sensitivity of 0.278 Ω /°C and negative temperature coefficient (NTC) about -0.00254 Ω/ Ω / °C. Thus, we demonstrate a simplified way for the fabrication of RGO films on filter paper that possesses better and easier measurable macroscopic electrical properties. Our approach is for easy way of electronics, cost-effective and environment friendly fabrication route for flexible conducting graphene films on filter paper. This will enable for the potential applications in flexible electronics in various fields including biomedical, automobile and aerospace engineering.
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10 April 2018
DAE SOLID STATE PHYSICS SYMPOSIUM 2017
26–30 December 2017
Mumbai, India
Research Article|
April 10 2018
Waste to wealth concept: Disposable RGO filter paper for flexible temperature sensor applications
Nagarjuna Neella;
Nagarjuna Neella
a)
1
Department of Instrumentation and Applied Physics, Indian Institute of Science
, Bangalore-560012, India
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Vaishakh Kedambaimoole;
Vaishakh Kedambaimoole
1
Department of Instrumentation and Applied Physics, Indian Institute of Science
, Bangalore-560012, India
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Venkateswarlu Gaddam;
Venkateswarlu Gaddam
1
Department of Instrumentation and Applied Physics, Indian Institute of Science
, Bangalore-560012, India
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M. M. Nayak;
M. M. Nayak
b)
2
Centre for Nano Science and Engineering, Indian Institute of Science
, Bangalore-560012, India
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K. Rajanna
K. Rajanna
c)
1
Department of Instrumentation and Applied Physics, Indian Institute of Science
, Bangalore-560012, India
c)Corresponding author: kraj@isu.iisc.ernet.in
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AIP Conf. Proc. 1942, 060017 (2018)
Citation
Nagarjuna Neella, Vaishakh Kedambaimoole, Venkateswarlu Gaddam, M. M. Nayak, K. Rajanna; Waste to wealth concept: Disposable RGO filter paper for flexible temperature sensor applications. AIP Conf. Proc. 10 April 2018; 1942 (1): 060017. https://doi.org/10.1063/1.5028787
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