Piezoelectric composite material
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United States of America Patent
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Jun 1, 2010
Issued Date -
N/A
app pub date -
Dec 15, 2006
filing date -
Dec 19, 2005
priority date (Note) -
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Abstract
A composition of matter having multiple layers of different conductors separated by thin layers of dielectric materials has a high piezoelectric coefficient when the conductors are metals having a significant difference in work function and the dielectric materials have a low elastic modulus when the metal layers are connected to form a capacitive circuit. Alternatively, when the conductors are semi-conductors they should have a significant difference in Fermi levels.
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