Carbon Nanostructure-based Sensors: A Brief Review on Recent Advances

Table 3

Comparison between some of the humidity sensor systems described in this review and other systems found in the literature.

Sensor compound or device	Sensitivity/linear range/LOD	Great response for	Other reported systems	Responses from other systems
MWCNT/GO (film) [107]	11% to 97% (measured range) 7980 pF/% RH	Humidity	MWCNT [114]; GO film [107]; TiO2 [115]	0% to 98% (humidity range) and 0.63 pF/% RH to 6000 pF/% RH
ND/MWCNTs (drop casting-QCM) [111]	Q factor: 26560 (11% RH) and 23460 (11% RH)	Humidity	PEG [116]; MWCNT [117]; GO/MWCNTs [117]	Q factor: ∼12,000 (11% RH) and 1198 (84.3% RH); 12940 (10% RH) and 6113 (95% RH)
C60/GO coated QCM [110]	31 Hz/% RH (in the range 11% to 97% RH)	Humidity	QMA401 (trace moisture analyzer) [110]; HMP155 (HUMICAP® humidity and temperature probe) [110]	2 mV/% RH to 100 mV/% RH

Advanced Quartz Crystal Microbalance analyzer model QMA401. Vaisala HUMICAP® Humidity and Temperature Probe model HMP155.