Quantitative analysis of CO-humidity gas mixtures with self-heated nanowires operated in pulsed mode

被引：25

作者：

Prades, J. D. ^{[1
]}

Hernandez-Ramirez, F. ^{[1
,2
]}

Fischer, T. ^{[3
]}

Hoffmann, M. ^{[3
]}

Mueller, R. ^{[3
]}

Lopez, N. ^{[4
]}

Mathur, S. ^{[3
]}

Morante, J. R. ^{[1
,2
]}

机构：

[1] Univ Barcelona, Dept Elect, E-08028 Barcelona, Spain

[2] Inst Recerca Energia Catalunya IREC, Barcelona 08019, Spain

[3] Univ Cologne, Inst Inorgan Chem, D-50939 Cologne, Germany

[4] Inst Chem Res Catalonia ICIQ, Tarragona 43007, Spain

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 24期

关键词：

TIN OXIDE; SNO2; NANOWIRES; ELECTRONIC NOSE; WATER-VAPOR; SENSORS; TEMPERATURE; OXYGEN; NANOSTRUCTURES; SELECTIVITY; SURFACE;

D O I：

10.1063/1.3515918

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Self-heating effect in individual metal oxide nanowires can be used to activate their response to gases with power consumptions below tenths of microwatts. The thermal response time of these devices is extremely fast (a few milliseconds) and it makes it possible to observe the kinetics of the interactions between the gas molecules and the metal oxide. In this work we demonstrate that such effects enable an experimental methodology to improve the selectivity of metal oxide-based sensors based on the analysis of their fast response dynamics. Specifically, this work jointly analyzes the magnitude and response time of SnO2 nanowire-based sensors to carbon monoxide (CO) and humidity (H2O) mixtures, proving that a quantitative analysis of CO-H2O gas blends can be achieved by modulating their work temperature through the self-heating effect. (C) 2010 American Institute of Physics. [doi:10.1063/1.3515918]

引用

页数：3

共 53 条

[31] Coupling nanowire chemiresistors with MEMS microhotplate gas sensing platforms [J].

Meier, Douglas C. ;

Semancik, Steve ;

Button, Bradley ;

Strelcov, Evgheni ;

Kolmakov, Andrei .

APPLIED PHYSICS LETTERS, 2007, 91 (06)

[32] Solid state gas sensors [J].

Moseley, PT .

MEASUREMENT SCIENCE AND TECHNOLOGY, 1997, 8 (03) :223-237

[33] Distinction of gases with a semiconductor sensor depending on the scanning profile of a cyclic temperature [J].

Nakata, S ;

Okunishi, H ;

Nakashima, Y .

ANALYST, 2006, 131 (01) :148-154

[34] Characteristic responses of a semiconductor gas sensor depending on the frequency of a periodic temperature change [J].

Nakata, S ;

Okunishi, H .

APPLIED SURFACE SCIENCE, 2005, 240 (1-4) :366-374

[35] New pattern recognition systems designed for electronic noses [J].

Ortega, A ;

Marco, S ;

Sundic, T ;

Samitier, J .

SENSORS AND ACTUATORS B-CHEMICAL, 2000, 69 (03) :302-307

[36] Sensitivity, selectivity and stability of tin oxide nanostructures on large area arrays of microhotplates [J].

Panchapakesan, B ;

Cavicchi, R ;

Semancik, S ;

DeVoe, DL .

NANOTECHNOLOGY, 2006, 17 (02) :415-425

[37] Harnessing self-heating in nanowires for energy efficient, fully autonomous and ultra-fast gas sensors [J].

Prades, J. D. ;

Jimenez-Diaz, R. ;

Hernandez-Ramirez, F. ;

Cirera, A. ;

Romano-Rodriguez, A. ;

Morante, J. R. .

SENSORS AND ACTUATORS B-CHEMICAL, 2010, 144 (01) :1-5

[38] An experimental method to estimate the temperature of individual nanowires [J].

Prades, J. D. ;

Jimenez-Diaz, R. ;

Hernandez-Ramirez, F. ;

Barth, S. ;

Pan, J. ;

Cirera, A. ;

Romano-Rodriguez, A. ;

Mathur, S. ;

Morante, J. R. .

INTERNATIONAL JOURNAL OF NANOTECHNOLOGY, 2009, 6 (09) :860-869

[39] Direct observation of the gas-surface interaction kinetics in nanowires through pulsed self-heating assisted conductometric measurements [J].

Prades, J. D. ;

Jimenez-Diaz, R. ;

Hernandez-Ramirez, F. ;

Pan, J. ;

Romano-Rodriguez, A. ;

Mathur, S. ;

Morante, J. R. .

APPLIED PHYSICS LETTERS, 2009, 95 (05)

[40] Ultralow power consumption gas sensors based on self-heated individual nanowires [J].

Prades, J. D. ;

Jimenez-Diaz, R. ;

Hernandez-Ramirez, F. ;

Barth, S. ;

Cirera, A. ;

Romano-Rodriguez, A. ;

Mathur, S. ;

Morante, J. R. .

APPLIED PHYSICS LETTERS, 2008, 93 (12)

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