Binary fingerprints at fluctuation-enhanced sensing.
作者： Hung-Chih Chang , Laszlo Kish , Maria King , Chiman Kwan
DOI: 10.3390/S100100361
关键词: Biological system 、 Pattern recognition (psychology) 、 Taguchi methods 、 Signal processing 、 Binary number 、 Reproducibility 、 Power consumption 、 Logic gate 、 Transducer 、 Materials science 、 Electronic engineering
摘要: We have developed a simple way to generate binary patterns based on spectral slopes in different frequency ranges at fluctuation-enhanced sensing. Such can be considered as "fingerprints" of odors. The method has experimentally been demonstrated with commercial semiconducting metal oxide (Taguchi) sensor exposed bacterial odors (Escherichia coli and Anthrax-surrogate Bacillus subtilis) processing their stochastic signals. With single Taguchi sensor, the situations empty chamber, tryptic soy agar (TSA) medium, or TSA bacteria could distinguished 100% reproducibility. bacterium numbers were range 2.5 × 104-106. To illustrate relevance for ultra-low power consumption, we show that this new type signal pattern recognition task implemented by analog circuitry few logic gates total consumption microWatts range.
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sci-hub.se 参考文章(22)
R Vajtai, L B Kish, C G Granqvist, Sampling-and-Hold Chemical Sensing by Noise Measurements for Electronics Nose Applications ,(1999)
S Chanda, Implications of aerobiology in respiratory allergy Annals of Agricultural and Environmental Medicine. ,vol. 03, ,(1996)
J. Ederth, J.M. Smulko, L.B. Kish, P. Heszler, C.G. Granqvist, Comparison of Classical and Fluctuation-Enhanced Gas Sensing with PdxWO3 Nanoparticle Films Sensors and Actuators B-chemical. ,vol. 113, pp. 310- 315 ,(2006) , 10.1016/J.SNB.2005.03.009
Tomas Eklöv, Ingemar Lundström, Distributed Sensor System for Quantification of Individual Components in a Multiple Gas Mixture Analytical Chemistry. ,vol. 71, pp. 3544- 3550 ,(1999) , 10.1021/AC990296V
J.L. Solis, S. Saukko, L.B. Kish, C.G. Granqvist, V. Lantto, Nanocrystalline tungsten oxide thick-films with high sensitivity to H2S at room temperature Sensors and Actuators B-chemical. ,vol. 77, pp. 316- 321 ,(2001) , 10.1016/S0925-4005(01)00699-2
L.B Kish, On the Sensitivity, Selectivity, Sensory Information and Optimal Size of Resistive Chemical Sensors Nanotechnology Perceptions. ,vol. 3, pp. 43- 52 ,(2007) , 10.4024/N02KI07.NTP.03.01
Hung-Chih Chang, Laszlo B. Kish, Maria D. King, Chiman Kwan, Fluctuation-enhanced sensing of bacterium odors Sensors and Actuators B-chemical. ,vol. 142, pp. 429- 434 ,(2009) , 10.1016/J.SNB.2009.04.005
J. Lacey, J. Dutkiewicz, Bioaerosols and occupational lung disease Journal of Aerosol Science. ,vol. 25, pp. 1371- 1404 ,(1994) , 10.1016/0021-8502(94)90215-1
Sami Gomri, Jean-Luc Seguin, Khalifa Aguir, Modeling on oxygen chemisorption-induced noise in metallic oxide gas sensors Sensors and Actuators B-chemical. ,vol. 107, pp. 722- 729 ,(2005) , 10.1016/J.SNB.2004.12.003
Sami Gomri, Jean-Luc Seguin, Jacques Guerin, Khalifa Aguir, Adsorption–desorption noise in gas sensors: Modelling using Langmuir and Wolkenstein models for adsorption Sensors and Actuators B-chemical. ,vol. 114, pp. 451- 459 ,(2006) , 10.1016/J.SNB.2005.05.033