Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1992-03-16
1994-08-02
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
2041531, 2041802, 204400, 204404, 204434, 310311, 310312, 310313R, 310321, 310363, 310364, 422 98, G01N 2726, H01L 4100
Patent
active
053343034
ABSTRACT:
A quartz crystal resonator is utilized to effect evaluation of the viscoelastic characteristic of a film deposited on an electrode by an electrochemical reaction. The quartz crystal resonator is connected to a resonator characteristic measurement unit comprised of an oscillating circuit, a frequency counter, and an amplitude level meter. An electrochemical measurement unit in the form of a potentiostat is connected to a working electrode which comprises one of the electrodes of the resonator, to a reference electrode and to a counter electrode. The frequency counter, the amplitude level meter and the potentiostat are connected to a CPU. The resonator, reference electrode and counter electrode are all immersed in an electrolyte solution in an electrochemical cell. In another embodiment, the system utilizes a quartz crystal resonator precoated with a macromolecule sensitive film for analyzing diffusion and viscosity variation in the film due to migration of electrochemically active substances relative to the film during the course of the electrochemical reaction.
REFERENCES:
patent: 4661210 (1987-04-01), Tenygl
patent: 4789804 (1988-12-01), Karube et al.
patent: 4831324 (1989-05-01), Asakura et al.
Patent Abstracts of Japan, vol. 12, No. 188 (P-711), Jun. 2, 1988.
Muramatsu Hiroshi
Ye Xuanjing
Adams Bruce L.
Seiko Instruments Inc.
Tung T.
Wilks Van C.
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