skip to main content
DOE Patents 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
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
873240
Patent Number(s):
6118124
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01G - CAPACITORS
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:

Works referenced in this record:

Microfabrication of cantilever styli for the atomic force microscope
journal, July 1990

  • Albrecht, T. R.; Akamine, S.; Carver, T. E.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 8, Issue 4
  • https://doi.org/10.1116/1.576520

Measuring intermolecular binding forces with the Atomic-Force Microscope: The magnetic jump method
journal, January 1994


Sensing Discrete Streptavidin-Biotin Interactions with Atomic Force Microscopy
journal, February 1994


Photothermal spectroscopy with femtojoule sensitivity using a micromechanical device
journal, November 1994


Quantized adhesion detected with the atomic force microscope
journal, June 1992


A nondestructive method for determining the spring constant of cantilevers for scanning force microscopy
journal, February 1993


A mechanical nanosensor in the gigahertz range: where mechanics meets electronics
journal, January 1994


Observation of a chemical reaction using a micromechanical sensor
journal, January 1994


Adhesion forces between individual ligand-receptor pairs
journal, April 1994


Thermal and ambient‐induced deflections of scanning force microscope cantilevers
journal, May 1994