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Fullerene/liquid crystal mixtures as QMB- and SAW-coatings : detection of diesel- and solvent-vapours

Title data

Dickert, Franz L. ; Zenkel, Matthias E. ; Bulst, Wolf-Eckhart ; Fischerauer, Gerhard ; Knauer, Ulrich:
Fullerene/liquid crystal mixtures as QMB- and SAW-coatings : detection of diesel- and solvent-vapours.
In: Fresenius' Journal of Analytical Chemistry. Vol. 357 (January 1997) Issue 1 . - pp. 27-31.
ISSN 1432-1130
DOI: https://doi.org/10.1007/s002160050105

Abstract in another language

The detection of diesel fuel and different solvent vapours in air is described. Due to the very low vapour pressure of diesel fuel, highly mass sensitive quartz microbalance (QMB) and surface acoustic wave (SAW) sensors are used. Micro porous coatings are presented consisting of liquid crystals and buckminster fullerenes. Thereby the globular compound disturbs the structure of the rod-like component and cavities and channels are created. With these mixtures it is possible to attain a resolution of 0.5% of the vapour pressure of diesel in air with the QMB; an even fivefold increase of sensitivity can be obtained with highly sensitive SAW devices operating at 433 MHz. In the latter case alkylsilane monolayers are used to promote adhesion, which themselves show a similar sensitivity as the QMB, but with an instantaneous response.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology > Chair Measurement and Control Technology - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer
Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 25 Feb 2016 16:11
Last Modified: 25 Feb 2016 16:11
URI: https://eref.uni-bayreuth.de/id/eprint/31134