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Title: Cantilevered probe detector with piezoelectric element

Patent ·
OSTI ID:1068867
 [1];  [2];  [1]
  1. Reno, NV
  2. Oakland, CA
+ Show Author Affiliations

A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.

Research Organization:
Board of Regents of the Nevada System of Higher Education (Reno, NV)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
Board of Regents of the Nevada System of Higher Education (Reno, NV)
Patent Number(s):
8,220,067
Application Number:
12/748,788
OSTI ID:
1068867
Country of Publication:
United States
Language:
English

References (9)

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conference January 2002
Semiconductor or vibration sensors using multiple cantilever beams with different lengths journal January 1991
Influence of adsorption-desorption process on resonant frequency and noise of micro- and nanocantilevers
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conference January 2002
Mesoporous Thin Films of “Molecular Squares” as Sensors for Volatile Organic Compounds journal April 2000
Multi-frequency interrogation technique applied to conducting polymer gas and odour sensors journal January 1999
Detection of volatile organic compounds (VOCs) with polymer-coated cantilevers journal September 1999
Fabrication of biological microarrays using microcantilevers journal May 2003

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