Nano Archive

Ultralow power consumption gas sensors based on self-heated individual nanowires

Prades, J. D. and Jimenez-Diaz, R and Hernández-Ramírez, Francisco and Barth, Sven and Cirera, A and Romano-Rodriguez, A and Mathur, S and Morante, J. R. (2008) Ultralow power consumption gas sensors based on self-heated individual nanowires. APPLIED PHYSICS LETTERS, 93 (12).

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Dissipated power in metal oxide nanowires (r(NW) < 45 nm) often causes important self-heating effects and as a result, undesired aging and failure of the devices. Nevertheless, this effect can be used to optimize the sensing conditions for the detection of various gaseous species, avoiding the requirement of external heaters. In this letter, the sensing capabilities of self-heated individual SnO2 nanowires toward NO2 are presented. These proof-of-concept systems exhibited responses nearly identical to those obtained with integrated microheaters, demonstrating the feasibility of taking advantage of self-heating in nanowires to develop ultralow power consumption integrated devices. (C) 2008 American Institute of Physics.

Item Type:Article
Subjects:Analytical Science > Nanotechnology for sensing and actuating
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
ID Code:1166
Deposited By:Anuj Seth
Deposited On:16 Dec 2008 16:57
Last Modified:31 Mar 2009 17:23

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