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Title: MEMS based pyroelectric thermal energy harvester

Patent ·
OSTI ID:1093276
;

A pyroelectric thermal energy harvesting apparatus for generating an electric current includes a cantilevered layered pyroelectric capacitor extending between a first surface and a second surface, where the first surface includes a temperature difference from the second surface. The layered pyroelectric capacitor includes a conductive, bimetal top electrode layer, an intermediate pyroelectric dielectric layer and a conductive bottom electrode layer. In addition, a pair of proof masses is affixed at a distal end of the layered pyroelectric capacitor to face the first surface and the second surface, wherein the proof masses oscillate between the first surface and the second surface such that a pyroelectric current is generated in the pyroelectric capacitor due to temperature cycling when the proof masses alternately contact the first surface and the second surface.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
8,519,595
Application Number:
12/874,407
OSTI ID:
1093276
Country of Publication:
United States
Language:
English

References (28)

Energy Converter patent October 1971
Power generating mechanism that has a duct, heat pipe, or heat sink to efficiently diffuse heat generated by a heat patent September 2004
Thermal energy harvesting through pyroelectricity journal March 2010
Energy harvesting using a thermoelectric material patent July 2008
Support assembly for cells of a secondary battery patent October 1985
Thermoelectric automotive waste heat energy recovery using maximum power point tracking journal June 2009
Energy harvesting by means of thermo-mechanical device utilizing bistable ferromagnets patent September 2010
Si-monolithic integrated pyroelectric infrared sensor made of PbTiO3 thin films journal January 1985
Energy Scavenging for Mobile and Wireless Electronics journal January 2005
Pyroelectric conversion system patent March 2003
Shape memory alloy microactuator having an electrostatic force and heating means patent April 1997
High output differential pyroelectric sensor patent April 1984
Energy scavenging with shoe-mounted piezoelectrics journal January 2001
Piezo-pyroelectric energy converter and method patent July 1997
Vibrational power generation device vibrator patent September 2006
Method of generating electricity from radiant energy called variable polarizability capacity generator patent July 1976
High performance P(VDF-TrFE) copolymer for pyroelectric conversion patent January 2008
Pyroelectric energy converter and method patent March 1987
Application of low-temperature and solid-state pyroelectric energy converter patent April 2006
Dielectric thermal power converter patent September 1980
Electrostatic energy generators and uses of same patent August 2005
Piezoelectric micro-transducers, methods of use and manufacturing methods for same patent June 2007
Pyroelectric energy converter element comprising vinylidene fluoride-trifluoroethylene copolymer patent October 1986
Power supply including pyroelectric capacitor patent December 2003
In-plane MEMS thermal actuator and associated fabrication methods patent April 2001
On thermoelectric and pyroelectric energy harvesting journal September 2009
Thermoelectric heat transfer apparatus patent December 1994
Cascaded bimorph rotary actuator patent March 2004

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