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Title: Photoacoustic microcantilevers

Abstract

A system generates a photoacoustic spectrum in an open or closed environment with reduced noise. A source focuses a beam on a target substance disposed on a base. The base supports a cantilever that measures acoustic waves generated as light is absorbed by the target substance. By focusing a chopped/pulsed light beam on the target substance, a range of optical absorbance may be measured as the wavelength of light changes. An identifying spectrum of the target may detected by monitoring the vibration intensity variation of the cantilever as a function of illuminating wavelength or color.

Inventors:
 [1];  [2];  [1];  [1]
  1. Knoxville, TN
  2. Kingston, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1055714
Patent Number(s):
8194246
Application Number:
12/488,238
Assignee:
UT-Battellle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Thundat, Thomas G, Van Neste, Charles W, Brown, Gilbert M, and Senesac, Lawrence R. Photoacoustic microcantilevers. United States: N. p., 2012. Web.
Thundat, Thomas G, Van Neste, Charles W, Brown, Gilbert M, & Senesac, Lawrence R. Photoacoustic microcantilevers. United States.
Thundat, Thomas G, Van Neste, Charles W, Brown, Gilbert M, and Senesac, Lawrence R. Tue . "Photoacoustic microcantilevers". United States. https://www.osti.gov/servlets/purl/1055714.
@article{osti_1055714,
title = {Photoacoustic microcantilevers},
author = {Thundat, Thomas G and Van Neste, Charles W and Brown, Gilbert M and Senesac, Lawrence R},
abstractNote = {A system generates a photoacoustic spectrum in an open or closed environment with reduced noise. A source focuses a beam on a target substance disposed on a base. The base supports a cantilever that measures acoustic waves generated as light is absorbed by the target substance. By focusing a chopped/pulsed light beam on the target substance, a range of optical absorbance may be measured as the wavelength of light changes. An identifying spectrum of the target may detected by monitoring the vibration intensity variation of the cantilever as a function of illuminating wavelength or color.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {6}
}

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