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Review

Carbon-Based Materials for Humidity Sensing: A Short Review

1
Department of Applied Science and Technology (DISAT), Politecnico di Torino, C.so Duca degli Abruzzi, 24-10129 Torino, Italy
2
INSTM Research Unit PoliTO, LINCE Laboratory, C.so Duca degli Abruzzi, 24-10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Micromachines 2019, 10(4), 232; https://doi.org/10.3390/mi10040232
Received: 20 February 2019 / Revised: 26 March 2019 / Accepted: 27 March 2019 / Published: 31 March 2019
(This article belongs to the Special Issue Carbon Based Electronic Devices)
Humidity sensors are widespread in many industrial applications, ranging from environmental and meteorological monitoring, soil water content determination in agriculture, air conditioning systems, food quality monitoring, and medical equipment to many other fields. Thus, an accurate and reliable measurement of water content in different environments and materials is of paramount importance. Due to their rich surface chemistry and structure designability, carbon materials have become interesting in humidity sensing. In addition, they can be easily miniaturized and applied in flexible electronics. Therefore, this short review aims at providing a survey of recent research dealing with carbonaceous materials used as capacitive and resistive humidity sensors. This work collects some successful examples of devices based on carbon nanotubes, graphene, carbon black, carbon fibers, carbon soot, and more recently, biochar produced from agricultural wastes. The pros and cons of the different sensors are also discussed in the present review. View Full-Text
Keywords: humidity sensor; carbon-based materials; carbon nanotubes; graphene; carbon black; carbon fibers; carbon soot; biochar; flexible electronics humidity sensor; carbon-based materials; carbon nanotubes; graphene; carbon black; carbon fibers; carbon soot; biochar; flexible electronics
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MDPI and ACS Style

Tulliani, J.-M.; Inserra, B.; Ziegler, D. Carbon-Based Materials for Humidity Sensing: A Short Review. Micromachines 2019, 10, 232. https://doi.org/10.3390/mi10040232

AMA Style

Tulliani J-M, Inserra B, Ziegler D. Carbon-Based Materials for Humidity Sensing: A Short Review. Micromachines. 2019; 10(4):232. https://doi.org/10.3390/mi10040232

Chicago/Turabian Style

Tulliani, Jean-Marc; Inserra, Barbara; Ziegler, Daniele. 2019. "Carbon-Based Materials for Humidity Sensing: A Short Review" Micromachines 10, no. 4: 232. https://doi.org/10.3390/mi10040232

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