Composite Content Influence on Multiwall Carbon Nanotubes-SiO2 Film Humidity Sensors at AC Testing

MWNT –SiO2 composite film humidity sensors with different MWNTs proportions were fabricated and their performances under alternating current testing signals are investigated. Influence of MWNT content on humidity sensing characteristics of the sensors is explored and explained by vapor adsorption and capillary condensation effect. It is proved that 60% MWNT content sensors have humidity sensitivity of 1500% at 400 kHz testing frequency, much higher than those with other MWNT contents. In sensors’ sensitivity-frequency relation, maximum sensitivity comes from frequency section of 400kHz to 500kHz for sensors with higher MWNTs proportions.

Download Full-text

Composite Content Influence on Multiwall Carbon Nanotubes-SiO2 Film Humidity Sensors at AC Testing

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.503.451 ◽

2012 ◽

Vol 503 ◽

pp. 451-454

Author(s):

Tuo Li ◽

Xiao Wei Liu ◽

Zhen Gang Zhao

Keyword(s):

Capillary Condensation ◽

Multiwall Carbon Nanotubes ◽

Humidity Sensors ◽

Current Testing ◽

Testing Frequency ◽

Frequency Relation ◽

Condensation Effect ◽

Sensing Characteristics ◽

Multiwall Carbon ◽

Mwnt Content

Download Full-text

Non-covalent functionalization of CNTs with polycarbazole: a chemiresistive humidity sensor with tunable chemo-electric attributes at room temperature

New Journal of Chemistry ◽

10.1039/c8nj00288f ◽

2018 ◽

Vol 42 (9) ◽

pp. 6918-6931 ◽

Cited By ~ 6

Author(s):

Madhurima Das ◽

Saptarshi Ghosh ◽

Somenath Roy

Keyword(s):

Room Temperature ◽

Humidity Sensor ◽

Oxidative Polymerization ◽

Multiwall Carbon Nanotubes ◽

Chemical Oxidative Polymerization ◽

Humidity Sensors ◽

Covalent Functionalization ◽

Polymerization Method ◽

Multiwall Carbon

This article describes the non-covalent functionalization of multiwall carbon nanotubes (MWCNTs) with polycarbazole (PCz) via an in situ chemical oxidative polymerization method and subsequent fabrication of resistive humidity sensors.

Download Full-text

pH sensing characteristics of multiwall carbon nanotubes/In2O3 composite films treatment by O2 plasma using microwave CVD

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-013-1301-4 ◽

2013 ◽

Vol 24 (10) ◽

pp. 3668-3674

Author(s):

Shang-Chao Hung ◽

Shang-Chou Chang ◽

Yuan-Pin Lo

Keyword(s):

Carbon Nanotubes ◽

Composite Films ◽

Multiwall Carbon Nanotubes ◽

Ph Sensing ◽

Sensing Characteristics ◽

Multiwall Carbon ◽

O2 Plasma

Download Full-text

Capillary Condensation of N2on Multiwall Carbon Nanotubes

The Journal of Physical Chemistry B ◽

10.1021/jp973319n ◽

1998 ◽

Vol 102 (24) ◽

pp. 4689-4692 ◽

Cited By ~ 128

Author(s):

S. Inoue ◽

N. Ichikuni ◽

T. Suzuki ◽

T. Uematsu ◽

K. Kaneko

Keyword(s):

Carbon Nanotubes ◽

Capillary Condensation ◽

Multiwall Carbon Nanotubes ◽

Multiwall Carbon

Download Full-text

Boehmite Nanofibers as a Dispersant for Nanotubes in an Aqueous Sol

10.26434/chemrxiv.6652955.v1 ◽

2018 ◽

Author(s):

Gen Hayase

Keyword(s):

Carbon Nanotubes ◽

Aspect Ratio ◽

Aqueous Solutions ◽

High Aspect Ratio ◽

Multiwall Carbon Nanotubes ◽

Multiwall Carbon ◽

Nanotube Films

By exploiting the dispersibility and rigidity of boehmite nanofibers (BNFs) with a high aspect ratio of 4 nm in diameter and several micrometers in length, multiwall-carbon nanotubes (MWCNTs) were successfully dispersed in aqueous solutions. In these sols, the MWCNTs were dispersed at a ratio of about 5–8% relative to BNFs. Self-standing BNF–nanotube films were also obtained by filtering these dispersions and showing their functionality. These films can be expected to be applied to sensing materials.

Download Full-text