Chemical Vapor Detection using Single-walled Carbon Nanotubes
NAVAL RESEARCH LAB WASHINGTON DC
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Single-walled carbon nanotubes possess unique properties that make them a potentially ideal material for chemical sensing. However, their extremely small size also presents technical challenges for realizing a practical sensor technology. In this tutorial review we explore the transduction physics by which the presence of molecular adsorbates is converted into a measurable electronic signal, and we identify solutions to the problems such as nanotube device fabrication and large, low-frequency noise that have inhibited commercial sensor development. Finally, we examine strategies to provide the necessary chemical specificity to realize a nanotubebased detection system for trace-level chemical vapor detection.
- Refractory Fibers
- Atomic and Molecular Physics and Spectroscopy