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Title: Direct charge radioisotope activation and power generation

Abstract

An activator has a base on which is mounted an elastically deformable micromechanical element that has a section that is free to be displaced toward the base. An absorber of radioactively emitted particles is formed on the base or the displaceable section of the deformable element and a source is formed on the other of the displaceable section or the base facing the absorber across a small gap. The radioactive source emits charged particles such as electrons, resulting in a buildup of charge on the absorber, drawing the absorber and source together and storing mechanical energy as the deformable element is bent. When the force between the absorber and the source is sufficient to bring the absorber into effective electrical contact with the source, discharge of the charge between the source and absorber allows the deformable element to spring back, releasing the mechanical energy stored in the element. An electrical generator such as a piezoelectric transducer may be secured to the deformable element to convert the released mechanical energy to electrical energy that can be used to provide power to electronic circuits.

Inventors:
 [1];  [1];  [1];  [1]
  1. (Madison, WI)
Issue Date:
Research Org.:
Massaschusetts Institute of Technology (Cambridge, MA)
OSTI Identifier:
874876
Patent Number(s):
6479920
Assignee:
Wisconsin Alumni Research Foundation (Madison, WI) IDO
DOE Contract Number:  
FG07991D13781
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
direct; charge; radioisotope; activation; power; generation; activator; base; mounted; elastically; deformable; micromechanical; element; section; free; displaced; absorber; radioactively; emitted; particles; formed; displaceable; source; facing; gap; radioactive; emits; charged; electrons; resulting; buildup; drawing; storing; mechanical; energy; bent; force; sufficient; bring; effective; electrical; contact; discharge; allows; spring; releasing; stored; generator; piezoelectric; transducer; secured; convert; released; provide; electronic; circuits; electrical contact; electrical energy; charged particle; mechanical energy; /310/376/

Citation Formats

Lal, Amit, Li, Hui, Blanchard, James P., and Henderson, Douglass L. Direct charge radioisotope activation and power generation. United States: N. p., 2002. Web.
Lal, Amit, Li, Hui, Blanchard, James P., & Henderson, Douglass L. Direct charge radioisotope activation and power generation. United States.
Lal, Amit, Li, Hui, Blanchard, James P., and Henderson, Douglass L. Tue . "Direct charge radioisotope activation and power generation". United States. https://www.osti.gov/servlets/purl/874876.
@article{osti_874876,
title = {Direct charge radioisotope activation and power generation},
author = {Lal, Amit and Li, Hui and Blanchard, James P. and Henderson, Douglass L.},
abstractNote = {An activator has a base on which is mounted an elastically deformable micromechanical element that has a section that is free to be displaced toward the base. An absorber of radioactively emitted particles is formed on the base or the displaceable section of the deformable element and a source is formed on the other of the displaceable section or the base facing the absorber across a small gap. The radioactive source emits charged particles such as electrons, resulting in a buildup of charge on the absorber, drawing the absorber and source together and storing mechanical energy as the deformable element is bent. When the force between the absorber and the source is sufficient to bring the absorber into effective electrical contact with the source, discharge of the charge between the source and absorber allows the deformable element to spring back, releasing the mechanical energy stored in the element. An electrical generator such as a piezoelectric transducer may be secured to the deformable element to convert the released mechanical energy to electrical energy that can be used to provide power to electronic circuits.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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