Photoacoustic microcantilevers

Thundat, Thomas G; Van Neste, Charles W; Brown, Gilbert M; Senesac, Lawrence R

Title: Photoacoustic microcantilevers

Patent · Tue Jun 05 00:00:00 EDT 2012

OSTI ID:1055714

Thundat, Thomas G ^[1]; Van Neste, Charles W ^[2]; Brown, Gilbert M ^[1]; Senesac, Lawrence R ^[1]

Knoxville, TN
Kingston, TN

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.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-Battellle, LLC (Oak Ridge, TN)

Patent Number(s):: 8,194,246

Application Number:: 12/488,238

OSTI ID:: 1055714

Country of Publication:: United States

Language:: English

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