Highly Sensitive, Room-Temperature Gas Sensors Prepared from Cellulose Derivative Assisted Dispersions of Single-Wall Carbon Nanotubes
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概要
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We have developed highly sensitive gas sensors based on single-wall carbon nanotube (SWNT) networks prepared from aqueous hydroxypropylcellulose-assisted dispersions. Gas responses were monitored at room temperature for different concentrations of NO2. The stable baseline and its recovery (after NO2 exposure) were achieved by ultraviolet (UV)-induced photodesorption, for which a compact and low-power UV light emitting diode can be used as a light source. The sensors are capable of detecting 25 ppb or lower concentrations of NO2 and 5 ppm ammonia, and show almost no baseline drift after multiple NO2 exposures. The simple and low-cost fabrication process, reproducible performance and room-temperature operation bode well for industrial mass production and broad uses.
- 2008-09-25
著者
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Minami Nobutsugu
Nanotechnology Research Institute And Collaborative Interdisciplinary Research Team National Institu
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Karthigeyan Annamalai
Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
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Iakoubovskii Konstantin
Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
関連論文
- Langmuir-Blodgett Films of Single-Wall Carbon Nanotubes : Layer-by-layer Deposition and In-plane Orientation of Tubes
- Highly Sensitive, Room-Temperature Gas Sensors Prepared from Cellulose Derivative Assisted Dispersions of Single-Wall Carbon Nanotubes
- Photocurrent Generators Derived from Non-covalently Assembled Soft-Matter Molecular System
- Langmuir–Blodgett Films of Single-Wall Carbon Nanotubes: Layer-by-layer Deposition and In-plane Orientation of Tubes