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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.:

US 9404855 B1

PDFFull Text
Date of Patent:
Aug. 02, 2016

Filed:

Nov. 27, 2013

Method to obtain absorption spectra from near-field infrared scattering using homo-dyne detection

Applicants:

Xiaoji Xu, Toronto, CA;

Gilbert C Walker, Mississauga, CA;

Inventors:

Xiaoji Xu, Toronto, CA;

Gilbert C Walker, Mississauga, CA;

Assignee:

Other;

Attorneys:

Lynn C. Schumacher

Stephen W. Leonard

Hill & Schumacher

Primary Examiner:

Brooke Purinton

Int. Cl.
CPC ...
G01Q 20/02 (2010.01); G01Q 30/00 (2010.01); G01N 21/359 (2014.01); B82Y 20/00 (2011.01); G01Q 30/02 (2010.01); G01Q 60/22 (2010.01); G01B 9/02 (2006.01); G01Q 10/00 (2010.01);
U.S. Cl.
CPC ...
G01N 21/359 (2013.01); B82Y 20/00 (2013.01); G01B 9/0203 (2013.01); G01Q 10/00 (2013.01); G01Q 30/02 (2013.01); G01Q 60/22 (2013.01); G01N 2201/06113 (2013.01); G01N 2201/10 (2013.01);
Abstract

The present disclosure provides a procedure and an apparatus to obtain the absorption profiles of molecular resonance with ANSOM. The method includes setting a reference field phase to φ=0.5π relative to the near-field field, and reference amplitude A≧5|α|. The requirement on phase precision is found to be <0.3π. The apparatus includes a phase stabilization mechanism in addition to the ANSOM to maintain high phase precision homodyne phase condition of less than 0.1 rad. This method enables ANSOM performing vibrational spectroscopy at nanoscale spatial resolution.

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Xu, Xiaoji. (2016). Method to obtain absorption spectra from near-field infrared scattering using homo-dyne detection (U.S. Patent No. 9404855). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9404855

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