Titelangaben
Achmann, Sabine ; Hämmerle, Martin ; Moos, Ralf:
Diffusion Membranes for Gas Phase Biosensor Devices.
2008
Veranstaltung: The 12th International Meeting on Chemical Sensors, IMCS 12
, 13.-16.07.2008
, Columbus, Ohio, USA.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Sonstige
Präsentationstyp)
Abstract
Porous ceramic membranes have been evaluated for the use as diffusion membranes in a biosensor device. Different hydrophobization strategies are examined in order to acquire gas permeable, but liquid impermeable surfaces. Hydrophobicity was assessed by measurement of the contact angle. Blockage of the pores was counted out by gas permeability tests. Best results were obtained by treatment with a mixture of 2 % chloroorganosilane in toluene (chlorotrimethylsilane, CTMS). The obtained repellent materials with various thicknesses and pore diameters have been successfully used in a biosensor device detecting the analyte formaldehyde directly from the gas phase with formaldehyde dehydrogenase from P. putida as recognition element. The pore diameter did not really affect the sensor characteristic. However, membrane thickness greatly influenced the sensitivity of the device, with best results obtained for a 250 μm membrane.
Weitere Angaben
Publikationsform: | Veranstaltungsbeitrag (Sonstige) |
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Begutachteter Beitrag: | Ja |
Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien > Lehrstuhl Funktionsmaterialien - Univ.-Prof. Dr.-Ing. Ralf Moos Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien Profilfelder > Advanced Fields > Neue Materialien Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT Profilfelder Profilfelder > Advanced Fields Forschungseinrichtungen Forschungseinrichtungen > Forschungszentren |
Titel an der UBT entstanden: | Ja |
Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
Eingestellt am: | 03 Jun 2015 06:30 |
Letzte Änderung: | 06 Apr 2016 09:30 |
URI: | https://eref.uni-bayreuth.de/id/eprint/14495 |