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Optimization of sensing film for quartz crystal microbalance odor sensor using self-assembly deposition method

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4 Author(s)
Saitoh, A. ; Dept. of Commun. Eng., Shibaura Inst. of Technol., Tokyo, Japan ; Nomura, T. ; Munoz, S. ; Moriizumi, T.

We demonstrated a new self-assembly method using thiol compounds for making a sensing film with a desired specific response property, using the interaction between odor molecules and sensing film molecules due to their affinity. The sensing film was deposited self-assembly on a QCM with gold electrode in the mixed solution of sensing film materials and odor molecules. This method realizes easy fabrication of the sensor with a desired response property. In addition, we investigated response property of the sensor having a surface function group controlled sensing film by self-assembly method. In this experiment, amino group, hydroxyl group, and -CH3 group were used for the function group. The results of a series of the sensor response measurement indicated the importance of the function groups on the sensing film surface and the necessity of controlling the surface

Published in:

Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European  (Volume:2 )

Date of Conference:

1999