skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Electromagnetic and nuclear radiation detector using micromechanical sensors

Abstract

Electromagnetic and nuclear radiation is detected by micromechanical sensors that can be coated with various interactive materials. As the micromechanical sensors absorb radiation, the sensors bend and/or undergo a shift in resonance characteristics. The bending and resonance changes are detected with high sensitivity by any of several detection methods including optical, capacitive, and piezoresistive methods. Wide bands of the electromagnetic spectrum can be imaged with picoJoule sensitivity, and specific absorptive coatings can be used for selective sensitivity in specific wavelength bands. Microcantilevers coated with optical cross-linking polymers are useful as integrating optical radiation dosimeters. Nuclear radiation dosimetry is possible by fabricating cantilevers from materials that are sensitive to various nuclear particles or radiation. Upon exposure to radiation, the cantilever bends due to stress and its resonance frequency shifts due to changes in elastic properties, based on cantilever shape and properties of the coating.

Inventors:
 [1];  [1];  [2]
  1. Knoxville, TN
  2. Oak Ridge, TN
Publication Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
873240
Patent Number(s):
US 6118124
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electromagnetic; nuclear; radiation; detector; micromechanical; sensors; detected; coated; various; interactive; materials; absorb; bend; undergo; shift; resonance; characteristics; bending; changes; sensitivity; detection; methods; including; optical; capacitive; piezoresistive; wide; bands; spectrum; imaged; picojoule; specific; absorptive; coatings; selective; wavelength; microcantilevers; cross-linking; polymers; useful; integrating; dosimeters; dosimetry; fabricating; cantilevers; sensitive; particles; exposure; cantilever; bends; due; stress; frequency; shifts; elastic; properties; based; shape; coating; radiation dosimeter; radiation dosimeters; wavelength bands; wide band; frequency shift; detection methods; detection method; nuclear radiation; active material; radiation detector; optical radiation; resonance frequency; active materials; wavelength band; absorb radiation; nuclear particles; specific wavelength; micromechanical sensors; electromagnetic spectrum; radiation dosimetry; elastic properties; mechanical sensors; mechanical sensor; nuclear particle; /250/

Citation Formats

Thundat, Thomas G, Warmack, Robert J, and Wachter, Eric A. Electromagnetic and nuclear radiation detector using micromechanical sensors. United States: N. p., 2000. Web.
Thundat, Thomas G, Warmack, Robert J, & Wachter, Eric A. Electromagnetic and nuclear radiation detector using micromechanical sensors. United States.
Thundat, Thomas G, Warmack, Robert J, and Wachter, Eric A. Sat . "Electromagnetic and nuclear radiation detector using micromechanical sensors". United States. https://www.osti.gov/servlets/purl/873240.
@article{osti_873240,
title = {Electromagnetic and nuclear radiation detector using micromechanical sensors},
author = {Thundat, Thomas G and Warmack, Robert J and Wachter, Eric A},
abstractNote = {Electromagnetic and nuclear radiation is detected by micromechanical sensors that can be coated with various interactive materials. As the micromechanical sensors absorb radiation, the sensors bend and/or undergo a shift in resonance characteristics. The bending and resonance changes are detected with high sensitivity by any of several detection methods including optical, capacitive, and piezoresistive methods. Wide bands of the electromagnetic spectrum can be imaged with picoJoule sensitivity, and specific absorptive coatings can be used for selective sensitivity in specific wavelength bands. Microcantilevers coated with optical cross-linking polymers are useful as integrating optical radiation dosimeters. Nuclear radiation dosimetry is possible by fabricating cantilevers from materials that are sensitive to various nuclear particles or radiation. Upon exposure to radiation, the cantilever bends due to stress and its resonance frequency shifts due to changes in elastic properties, based on cantilever shape and properties of the coating.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Patent:

Save / Share: