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Title: Method and apparatus for remote sensing of molecular species at nanoscale utilizing a reverse photoacoustic effect

Abstract

A method and apparatus for identifying a sample, involves illuminating the sample with light of varying wavelengths, transmitting an acoustic signal against the sample from one portion and receiving a resulting acoustic signal on another portion, detecting a change of phase in the acoustic signal corresponding to the light of varying wavelengths, and analyzing the change of phase in the acoustic signal for the varying wavelengths of illumination to identify the sample. The apparatus has a controlled source for illuminating the sample with light of varying wavelengths, a transmitter for transmitting an acoustic wave, a receiver for receiving the acoustic wave and converting the acoustic wave to an electronic signal, and an electronic circuit for detecting a change of phase in the acoustic wave corresponding to respective ones of the varying wavelengths and outputting the change of phase for the varying wavelengths to allow identification of the sample. The method and apparatus can be used to detect chemical composition or visual features. A transmission mode and a reflection mode of operation are disclosed. The method and apparatus can be applied at nanoscale to detect molecules in a biological sample.

Inventors:
 [1];  [2];  [3]
  1. Oviedo, FL
  2. Knoxville, TN
  3. Lenoir City, TN
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014192
Patent Number(s):
7,665,364
Application Number:
US Patent Application 11/639,184
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Su, Ming, Thundat, Thomas G, and Hedden, David. Method and apparatus for remote sensing of molecular species at nanoscale utilizing a reverse photoacoustic effect. United States: N. p., 2010. Web.
Su, Ming, Thundat, Thomas G, & Hedden, David. Method and apparatus for remote sensing of molecular species at nanoscale utilizing a reverse photoacoustic effect. United States.
Su, Ming, Thundat, Thomas G, and Hedden, David. Tue . "Method and apparatus for remote sensing of molecular species at nanoscale utilizing a reverse photoacoustic effect". United States. https://www.osti.gov/servlets/purl/1014192.
@article{osti_1014192,
title = {Method and apparatus for remote sensing of molecular species at nanoscale utilizing a reverse photoacoustic effect},
author = {Su, Ming and Thundat, Thomas G and Hedden, David},
abstractNote = {A method and apparatus for identifying a sample, involves illuminating the sample with light of varying wavelengths, transmitting an acoustic signal against the sample from one portion and receiving a resulting acoustic signal on another portion, detecting a change of phase in the acoustic signal corresponding to the light of varying wavelengths, and analyzing the change of phase in the acoustic signal for the varying wavelengths of illumination to identify the sample. The apparatus has a controlled source for illuminating the sample with light of varying wavelengths, a transmitter for transmitting an acoustic wave, a receiver for receiving the acoustic wave and converting the acoustic wave to an electronic signal, and an electronic circuit for detecting a change of phase in the acoustic wave corresponding to respective ones of the varying wavelengths and outputting the change of phase for the varying wavelengths to allow identification of the sample. The method and apparatus can be used to detect chemical composition or visual features. A transmission mode and a reflection mode of operation are disclosed. The method and apparatus can be applied at nanoscale to detect molecules in a biological sample.},
doi = {},
url = {https://www.osti.gov/biblio/1014192}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {2}
}

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