The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2012
Filed:
Jun. 19, 2009
Thomas G. Thundat, Knoxville, TN (US);
Charles W. Van Neste, Kingston, TN (US);
Gilbert M. Brown, Knoxville, TN (US);
Lawrence R. Senesac, Knoxville, TN (US);
Thomas G. Thundat, Knoxville, TN (US);
Charles W. Van Neste, Kingston, TN (US);
Gilbert M. Brown, Knoxville, TN (US);
Lawrence R. Senesac, Knoxville, TN (US);
UT-Battellle, LLC, Oak Ridge, TN (US);
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.