Method of manufacturing a piezosensitive material or a magnetic

Details Method of manufacturing a piezosensitive material or a magnetic Method of manufacturing a piezosensitive material or a magnetic

1997-01-15

1998-09-29

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310362, 435177, H01L 4118

Patent

active

058149163

ABSTRACT:
The invention relates to the areas of piezoelectricity and magnetism, and relates in particular to a composite material having piezoelectric or magnetic properties and a method for manufacturing the same. The composite material can be used, for example, in piezosensitive sensors or in magnetic sensors. The method according to the invention includes culturing microorganisms in a nutrient medium in the presence of a piezoelectric powder or magnetic powder. The microorganisms fix or ingest the powder, and are subsequently extracted from the nutrient medium and dehydrated to obtain dry particles. The dry particles are then compacted or inserted into a matrix to constitute the composite material. The microorganisms can optionally be separated from the particles prior to compaction of the particles or insertion of the particles into the matrix.

REFERENCES:
patent: 4214887 (1980-07-01), Van Gelder
patent: 4407054 (1983-10-01), Zipfel, Jr.
patent: 4935467 (1990-06-01), Cheng et al.
patent: 5094947 (1992-03-01), Nakajima et al.
Patent Abstracts of Japan vol. 006, No. 191 (C-127) 30 Sep. 1982.

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