Thin film shape memory alloy reflector
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United States of America Patent
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Aug 10, 2004
Grant Date -
May 6, 2004
app pub date -
Nov 6, 2002
filing date -
Nov 6, 2002
priority date (Note) -
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Abstract
Reconfigurable radiant energy reflectors (3) of very low areal densities are formed of a laminate of a thin layer of a shape memory alloy (17) and a thin film or membrane material (15). The outer surface of the membrane provides the energy reflecting surface (16) and a support member (11) is attached to the laminate for application in a system. In a preferred embodiment, the shape memory alloy (17) is compositionally graded (18, 19, 29, 21) and exhibits a two-way shape memory effect and a heater (5) serves as the actuator to the reflector.
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