Miniature quartz crystal-resonator-based thermogravimetric detector

In this work, a new design for a microheater combined with a quartz crystal microbalance (QCM) array for thermogravimetric analysis is presented. Each QCM consists of two electrodes to excite thickness-shear-mode vibrations and one microheater to increase the temperature on the crystal backside. In...

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Bibliographic Details
Published in:Review of scientific instruments 2014-09, Vol.85 (9), p.095001-095001
Main Authors: Sai, N, Tagawa, Y, Sohgawa, M, Abe, T
Format: Article
Language:English
Subjects:
Electrodes
Equipment Design
Ethanol
Ethanol - chemistry
Methanol - chemistry
Microbalances
Microtechnology - instrumentation
Quartz
Quartz Crystal Microbalance Techniques - instrumentation
Quartz crystals
Scientific apparatus & instruments
Thermogravimetric analysis
Thermogravimetry - instrumentation
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Summary:In this work, a new design for a microheater combined with a quartz crystal microbalance (QCM) array for thermogravimetric analysis is presented. Each QCM consists of two electrodes to excite thickness-shear-mode vibrations and one microheater to increase the temperature on the crystal backside. In addition, all the electrode pads are patterned on the crystal backside, making the design of the QCM compact and user-friendly. Finally, the proposed QCM array was employed to separate ethanol from methanol. This was successfully achieved via thermal desorption spectra calculated by differentiating the frequency changes.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4894385