Multi-Walled Carbon Nanotube Networks As Gas Sensors for NO2 Detection

2007 ◽  
Author(s):  
I. Sayago ◽  
H. Santos ◽  
M.C. Horrillo ◽  
M. Aleixandre ◽  
M.J. Fernandez ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Gas Sensors ◽  
Multi Walled Carbon Nanotube ◽  
Carbon Nanotube Networks ◽  
No2 Detection

Carbon nanotube networks as gas sensors for NO2 detection

Talanta ◽  
2008 ◽  
Vol 77 (2) ◽  
pp. 758-764 ◽  
Author(s):  
I SAYAGO ◽  
H SANTOS ◽  
M HORRILLO ◽  
M ALEIXANDRE ◽  
M FERNANDEZ ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Gas Sensors ◽  
Carbon Nanotube Networks ◽  
No2 Detection

Controlled Carbon Nanotube Networks and its Corresponding Channel Effect at High Bias

2006 ◽  
Vol 963 ◽  
Author(s):  
Jun Huang ◽  
Bangalore Kiran Rao ◽  
Harindra Vedala ◽  
Do-Hyun Kim ◽  
Minhyon Jeon ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrical Breakdown ◽  
Single Walled Carbon Nanotube ◽  
Large Current ◽  
Linear Resistance ◽  
Current Voltage ◽  
Multi Walled Carbon Nanotube ◽  
High Bias ◽  
Current Densities ◽  
Carbon Nanotube Networks

ABSTRACTGeometrically controlled single-walled carbon nanotube (SWNT) and multi-walled carbon nanotube (MWNT) networks were fabricated by a width confinement technique to characterize their electrical characteristics. The results demonstrated non-linear resistance decay with the number of conducting channels. The current-voltage characteristics at high field were studied until the electrical breakdown took place. Large current (∼2 mA), low resistance (∼5 KΩ) and current densities exceeding ∼108 A/cm2 were demonstrated from multi-channel MWNT networks confined in a 10 μm × 15 μm trench. Additionally, chronological SEM imaging was used to identify the breakdown sequences in the carbon nanotube networks, which revealed a strong tendency for CNT breakdown to occur in the vicinity of CNT-CNT intersections. Our results offer insights for interconnect applications using CNT networks.

scholarly journals Humidity Sensitivity of Multi-Walled Carbon Nanotube Networks Deposited by Dielectrophoresis

Sensors ◽  
2009 ◽  
Vol 9 (3) ◽  
pp. 1714-1721 ◽  
Author(s):  
Litao Liu ◽  
Xiongying Ye ◽  
Kang Wu ◽  
Rui Han ◽  
Zhaoying Zhou ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Multi Walled Carbon Nanotube ◽  
Carbon Nanotube Networks ◽  
Humidity Sensitivity

H2 Gas Sensor Based on Pd-Loaded Carbon Nanotube Film

2020 ◽  
Vol 20 (7) ◽  
pp. 4470-4473
Author(s):  
Maeum Han ◽  
Jae Keon Kim ◽  
Junyeop Lee ◽  
Hee Kyung An ◽  
Jong Pil Yun ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Gas Sensors ◽  
Room Temperature ◽  
Pd Nanoparticles ◽  
Gas Detection ◽  
Structural Flexibility ◽  
Bending Tests ◽  
Multi Walled Carbon Nanotube ◽  
Reliable Detection ◽  
Detection Characteristics

Palladium-coated multi-walled carbon nanotube (Pd-MWCNT) nanocomposites have been experimentally proven to show highly improved hydrogen (H2) gas detection characteristics at room temperature when compared with single MWCNTs. In this context, we develop an efficient and convenient method for forming nanocomposites by coating Pd nanoparticles on an MWCNT film. Furthermore, we test the applicability of the nanocomposites as sensing materials in detecting H2 gas at room temperature in a reliable and sensitive manner in contrast with ordinary metal-oxidebased gas sensors that operate at high temperatures. We first study the detection efficacy of the Pd-MWCNT film relative to pure MWCNT film. Subsequently, we investigate the Pd-MWCNT sensor’s sensitivity over time for different gas concentrations, the sensor response time, and sensor reproducibility and reliability under various conditions including bending tests. Our sensor exhibits stable reliable detection characteristics and excellent structural flexibility.

NO2 detection with Single Walled Carbon Nanotube Networks

2007 ◽  
Author(s):  
I. Sayago ◽  
E. Terrado ◽  
M.C. Horrillo ◽  
M. Aleixandre ◽  
M.J. Fernandez ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Carbon Nanotube Networks ◽  
No2 Detection

Multi-walled carbon nanotube-based gas sensors for NH3 detection

2004 ◽  
Vol 13 (4-8) ◽  
pp. 1327-1332 ◽  
Author(s):  
S.G. Wang ◽  
Qing Zhang ◽  
D.J. Yang ◽  
P.J. Sellin ◽  
G.F. Zhong
Keyword(s):  
Carbon Nanotube ◽  
Gas Sensors ◽  
Multi Walled Carbon Nanotube
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