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Thin Layer Composite Unimorph Ferroelectric Driver and SensorA method for forming ferroelectric wafers is provided. A prestress layer is placed on the desired mold. A ferroelectric wafer is placed on top of the prestress layer. The layers are heated and then cooled causing the ferroelectric wafer to become prestressed. The prestress layer may include reinforcing material and the ferroelectric wafer may include electrodes or electrode layers may be placed on either side of the ferroelectric layer. Wafers produced using this method have greatly improved output motion.
Document ID
19980037610
Acquisition Source
Langley Research Center
Document Type
Other - Patent
Authors
Hellbaum, Richard F.
(NASA Langley Research Center Hampton, VA United States)
Bryant, Robert G.
(NASA Langley Research Center Hampton, VA United States)
Fox, Robert L.
(NASA Langley Research Center Hampton, VA United States)
Date Acquired
August 18, 2013
Publication Date
May 27, 1997
Subject Category
Composite Materials
Report/Patent Number
Patent Number: US-Patent-5,632,841
Patent Application Number: US-Patent-Appl-SN-416598
Patent Number: NASA-Case-LAR-15348-1
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-5,632,841|NASA-Case-LAR-15348-1
Patent Application
US-Patent-Appl-SN-416598
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