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

被引:170
作者
Prades, J. D. [1 ]
Jimenez-Diaz, R. [1 ]
Hernandez-Ramirez, F. [1 ,2 ]
Barth, S. [3 ]
Cirera, A. [1 ]
Romano-Rodriguez, A. [1 ]
Mathur, S. [3 ,4 ]
Morante, J. R. [1 ]
机构
[1] Univ Barcelona, EME XaRMAE IN2UB, Dept Elect, E-08028 Barcelona, Spain
[2] Elect Nanosyst SL, E-08028 Barcelona, Spain
[3] Leibniz Inst New Mat, D-66123 Saarbrucken, Germany
[4] Univ Cologne, Dept Inorgan Chem, D-50939 Cologne, Germany
关键词
D O I
10.1063/1.2988265
中图分类号
O59 [应用物理学];
学科分类号
摘要
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.
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页数:3
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