报告题目：Chemical gas sensors with electrical readout: novel principles and novel materials

报 告 人 ：Prof. Ralf Moos

     Department of Functional Materials University of Bayreuth, Germany

主 持 人 ：卢革宇 教授

报告时间：2016年7月15日09:30

报告地点：南区唐敖庆楼D区314

主办单位：电子科学与工程学院

     集成光电子学国家重点联合实验室

     物质科学吉林省高校高端科技创新平台

Abstract: Chemical gas sensors are required for emission and immission control as well as to detect harmful or critical gases. Chemical gas sensors have to be sensitive and selective and they must be long-term stable, often even under harsh ambient conditions. In the past, many conductometric materials were investigated, but selectivity and/or long-term stability remains an issue. Mixed potential sensors have also been studied widely, especially for exhaust applications, but so-called “novel materials” are hardly accepted in the exhaust. This talk gives an overview on novel principles and novel materials that are under study in the department of Functional Materials of Prof. Moos in Bayreuth, Germany. Topics presented are:

•Direct thermoelectric gas sensors for increased long-term stability

•Conductometric gas dosimeters for selective detection of nitrogen oxides in the ppb and low ppm range

•Pulsed polarization techniques using conventional lambda probes for NOx sensing in the exhaust.

 Ralf Moos is a full professor (chair) at the University of Bayreuth, Germany, where he heads the Department of Functional Materials. He studied electrical engineering and wrote a doctoral thesis on defect chemistry of strontium titanate. Later, he worked in several R&D positions at the Daimler AG (Stuttgart, Germany) in the fields of novel exhaust gas sensors incl. interactions between sensors and catalytic converters, sensors for fuel-cell cars, and sensors for fuels and lubricants. His present research focusses on exhaust gas sensors, solid-state gas sensor materials, novel solid-state gas sensor principles, solid-state gas sensor technology, gas sensor modeling, and on the development of transducers for sensors. Novel concepts to replace classical sensors by using catalysts directly as sensors are a unique working field. He is author or co-author of more than 500 publications (journals, conferences, book contributions) in these fields and over 80 patents were disclosed listing him as an inventor. Presently, he is Editor of Sensors and Actuators B: Chemical and is chairing the executive steering committee of the International Meeting on Chemical Sensors (IMCS).