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      • NEW ADVANCEMENTS IN GAS SENSITIVE FIELD EFFECT DEVICES : SENSOR ARRAYS FOR ODOUR IDENTIFICATION

        Lundström, Ingemar,Holmberg, Martin,Sundgren, Hans,Winquist, Fredrik 경북대학교 센서기술연구소 1994 센서技術學術大會論文集 Vol.5 No.1

        Several advancements are still made regarding gas sensitive field effect structures like the use of new gate materials, new semiconductor substrates for high temperature operation, the detection of new classes of molecules, and the develoμment of new models for the detection mechanisms. In this contribution we concentrate on sensor arrays with field effect devices. Models for the detection mechanism of gas sensitive field effect devices are first reviewed. An emphasis is put on the different possibilities to change the selectivity patterns of such devices. These are related to the choice of gate metal and operation temperature. It is shown how sensor arrays with different field effect devices combined with other types of sensors can be used for odour identification and classification purposes. More specifically an electronic nose consisting of ten of the MOSFET devices, four Taguchi sensors and a carbon dioxide monitor is described. Applications of the hybrid array for the classification of ground meat in terms of its age and of different qualities of packaging materials are two examples which are discussed.

      • Natural nanosystems

        Ingemar Lundstr?m,Samuel Svensson 한국물리학회 2002 Current Applied Physics Vol.2 No.1

        A short review of our work on pigment containing cells as biosensors is given. It is pointed out that they combine several natural nanosystems, namely membrane bound receptors and their biochemical machinery, and the tubulin/actin network inside the cells for transport of submicron-sized pigment particles driven by molecular motors of 10–100 nm size. 2002 Elsevier Science B.V. All rights reserved.

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