SS-DNA-decorated Single-Walled Carbon Nanotubes integrated on CMOS circuitry for high sensitivity gas sensing

2009 ◽  
Author(s):  
C.-L. Chen ◽  
C.-F. Yang ◽  
V. Agarwal ◽  
S. Sonkusale ◽  
A. Busnaina ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Effect of Operating Temperature on Characteristics of Single-Walled Carbon Nanotubes Gas Sensor

2005 ◽  
Vol 486-487 ◽  
pp. 485-488 ◽  
Author(s):  
Hong Quang Nguyen ◽  
Mai Van Trinh ◽  
Jeung Soo Huh
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensor ◽  
Gas Adsorption ◽  
Operating Temperature ◽  
High Sensitivity ◽  
Single Walled Carbon Nanotubes ◽  
Fast Response ◽  
Carrier Gas ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The effect of operating temperature on characteristics of single-walled carbon nanotubes (SWNT) based gas sensor was investigated. SWNT-based sensor was fabricated from SWNT powder (Iljin Nanotech, Korea) by screen-printing method. SWNT powder (30 mg, AP grade) was dispersed into 0.78 gram a-terpineol (Aldrich) by ultrasonic vibration for 1 hour then stirred manually for 1 hour to increase adhesion. From this condensed solution, a thick film of SWNT was printed onto alumina substrates. The film then was sintered at 300oC for 2 hours to remove residual impurities. Upon exposure to some gases such as nitrogen, ammonia or nitric oxide, resistance of the sensor dramatically changes due to gas adsorption. In our experiments, SWNT-based sensor was employed to detect NH3 gas in N2 ambience. After saturated of N2, the sensor exposes to NH3 with various concentrations (from 5 ppm to 100 ppm, diluted by N2 as carrier gas). This sensor exhibits a fast response, high sensitivity but slow recovery at room temperature. By heating at high temperature and increasing the flow-rate of carrier gas, NH3 gas desorbs easily and recovery of the sensor improved. The heating also influenced the characteristics of sensors such as response and reproducibility. Other special changes in electric property of SWNT-based sensor caused by heating are also discussed.

3D, covalent and noncovalent hybrid materials based on 3-phenylcoumarin derivatives and single walled carbon nanotubes as gas sensing layers

2020 ◽  
Vol 504 ◽  
pp. 144276 ◽  
Author(s):  
Maxim S. Polyakov ◽  
Victoria N. Ivanova ◽  
Tamara V. Basova ◽  
Andrey A. Saraev ◽  
Baybars Köksoy ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hybrid Materials ◽  
Gas Sensing ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Gas sensing properties of defect-induced single-walled carbon nanotubes

2016 ◽  
Vol 228 ◽  
pp. 688-692 ◽  
Author(s):  
Jaeseong Kim ◽  
Sun-Woo Choi ◽  
Je-Haeng Lee ◽  
Youngchul Chung ◽  
Young Tae Byun
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensing ◽  
Single Walled Carbon Nanotubes ◽  
Sensing Properties ◽  
Single Walled Carbon ◽  
Gas Sensing Properties ◽  
Walled Carbon Nanotubes

Formaldehyde gas sensing chip based on single-walled carbon nanotubes and thin water layer

2011 ◽  
Vol 47 (10) ◽  
pp. 2892 ◽  
Author(s):  
Ji Yeon Kim ◽  
Joohyung Lee ◽  
Seunghun Hong ◽  
Taek Dong Chung
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensing ◽  
Water Layer ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

High-yield photolytic generation of brominated single-walled carbon nanotubes and their application for gas sensing

2014 ◽  
Vol 50 (78) ◽  
pp. 11568-11571 ◽  
Author(s):  
D. Hines ◽  
M. H. Rümmeli ◽  
D. Adebimpe ◽  
D. L. Akins
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensing ◽  
Single Walled Carbon Nanotubes ◽  
High Yield ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

We present a facile and efficient photobromination technique for the covalent sidewall functionalization of SWNT using N-bromosuccinamide as the bromine source.

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