Nanotube molecular wires as chemical sensors

By J. Kong, N. Franklin, Chongwu Zhou, M. Chapline, S. Peng, Kyeongjae Cho, Hongjie Dai. Science, 2000

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Detection of individual gas molecules adsorbed on graphene. (2006, background): “Such resolution has so far been beyond the reach of any detection technique, including solid-state gas sensors hailed for their exceptional sensitivit”
NO2 gas sensitivity of carbon nanotubes obtained by plasma enhanced chemical vapor deposition (2003, background): “Reported studies on possible applications of carbon nanotubes as gas sensors have been focused either on isolated single wall carbon nanotubes (SWNTs) or on SWNT mats [1–4].”
Tailoring Piezoresistive Sensitivity of Multilayer Carbon Nanotube Composite Strain Sensors (2008, background): “…have illustrated their functionality for a wide variety of applications including high-strength structural composites (Andrews et al., 1999), nanoelectronics (Tsukagoshi et al., 2002), various types of sensors (Kong et al., 2000; Wood et al., 2000), among many others (Baughman et al., 2002).”
Multifunctional layer-by-layer carbon nanotube–polyelectrolyte thin films for strain and corrosion sensing (2007, background): “of carbon nanotubes (CNTs) by Iijima in 1991 [1] led researchers to illustrate the use of carbon nanotubes in a wide variety of applications including nanocomposite materials [2], nanoelectronics [3], and various types of sensors [4, 5], among many others [6].”