Microwave-based gas sensor with phthalocyanine film at room temperature

Abstract This work presents the development of a microwave gas sensor at room temperature. The design of the sensor includes a coplanar grounded wave guide where is deposited a molecular gas sensing material. In this study, the sensitive material is a thin layer of cobalt phthalocyanine (CoPc), sensitive to ammonia and toluene. Submitted to an electromagnetic incident wave in the microwave range, the sensor response is a reflected wave. In the presence of pollutant, the reflected wave shape is specific to the species concentrations. The results interpretation is led at each frequency by the evaluation of the reflected coefficient, which traduces the ratio between the reflected wave over the incident wave. This study deals with the influence of molecular sensitive materials on the sensor response in the presence of ammonia (or toluene) in an argon flow. All the measurements are carried out at room temperature.

[1]  J. Groeneweg,et al.  Porous SiC as an ammonia sensor , 2004, Proceedings of IEEE Sensors, 2004..

[2]  G. Collins,et al.  Chemiresistor gas sensors based on photoconductivity changes in phthalocyanine thin films: enhancement of response toward ammonia by photoelectrochemical deposition with metal modifiers , 1990 .

[3]  I. Lundström,et al.  An electronic tongue based on voltammetry , 1997 .

[4]  D. Stuerga,et al.  Metal oxide-based gas sensor and microwave broad-band measurements: an innovative approach to gas sensing , 2007 .

[5]  S. C. Thorpe,et al.  Fast response metal phthalocynanine-based gas sensors , 1989 .

[6]  Daniel Filippini,et al.  Chemical sensing with familiar devices. , 2006, Angewandte Chemie.

[7]  J. Rossignol,et al.  Physique/Physique appliquée Développement d'un nouveau capteur de gaz basé sur la détection à large bande micro-onde , 2007 .

[8]  E. Maciak,et al.  Metal-free phthalocyanine and palladium sensor structure with a polyethylene membrane for hydrogen detection in SAW systems , 2007 .

[9]  Udo Weimar,et al.  Copper phthalocyanine suspended gate field effect transistors for NO2 detection , 2006 .

[10]  Marcel Bouvet,et al.  Phthalocyanine-based field-effect transistor as ozone sensor , 2001 .

[11]  Antonio J. Ricco,et al.  Surface acoustic wave gas sensor based on film conductivity changes , 1985 .

[12]  Ralf Moos,et al.  Catalysts as Sensors—A Promising Novel Approach in Automotive Exhaust Gas Aftertreatment , 2010, Sensors.

[13]  N. Yamazoe.  Chemical sensors R & D in Japan☆ , 1992 .

[14]  Ralf Moos,et al.  Direct Catalyst Monitoring by Electrical Means: An Overview on Promising Novel Principles , 2009 .

[15]  A. Berg,et al.  Ammonia sensors and their applications - a review , 2005 .

[16]  Marcel Bouvet,et al.  Development of microwave gas sensors , 2011 .

[17]  J. Brunet,et al.  On-board phthalocyanine gas sensor microsystem dedicated to the monitoring of oxidizing gases level in passenger compartments , 2008 .

[18]  David E. Williams.  Semiconducting oxides as gas-sensitive resistors , 1999 .

[19]  D. Stuerga,et al.  Broadband microwave gas sensor: A coaxial design , 2010 .

[20]  Neal A. Rakow,et al.  A colorimetric sensor array for odour visualization , 2000, Nature.

[21]  G. G. Roberts,et al.  Surface acoustic wave sensors incorporating Langmuir-Blodgett films , 1988 .

[22]  Chen Yuquan,et al.  SAW gas sensor with proper tetrasulphonated phthalocyanine film , 1994 .

[23]  Thomas Nirmaier,et al.  Sensitive NO2 detection with surface acoustic wave devices using a cyclic measuring technique , 2000 .

[24]  R. Gutierrez-Osuna,et al.  Fusion of three sensory modalities for the multimodal characterization of red wines , 2004, IEEE Sensors Journal.

[25]  M. Bouvet,et al.  Humidity effect on ammonia sensing properties of substituted and unsubstituted cobalt phthalocyanines. , 2012, Talanta.