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:
Mar. 04, 2014
Filed:
Dec. 05, 2011
Cagri Savran, West Lafayette, IN (US);
Chun-li Chang, West Lafayette, IN (US);
Zhenwen Ding, Santa Clara, CA (US);
Babak Ziaie, W. Lafayette, IN (US);
Andrew Ellington, Austin, TX (US);
Venkata Naga Lakshmi Rekha Patchigolla, Columbus, IN (US);
Cagri Savran, West Lafayette, IN (US);
Chun-Li Chang, West Lafayette, IN (US);
Zhenwen Ding, Santa Clara, CA (US);
Babak Ziaie, W. Lafayette, IN (US);
Andrew Ellington, Austin, TX (US);
Venkata Naga Lakshmi Rekha Patchigolla, Columbus, IN (US);
Purdue Research Foundation, West Lafayette, IN (US);
Board of Regents, The University of Texas System, Austin, TX (US);
Abstract
A reflective diffractometric hydrogel sensor includes an upper layer, including a microfluidic chamber formed from a substantially transparent material and configured to contain a solution, a reflective diffraction grating positioned within the microfluidic chamber, the diffraction grating including a plurality of hydrogel strips configured to change in dimension in response to a stimulus, each hydrogel strip having a top surface coated with a reflective material and a bottom surface in contact with the upper layer substrate, and a reflective surface below the reflective diffraction grating wherein when a coherent light is incident upon and reflected from the upper layer at an angle substantially normal to the upper layer an interference diffraction pattern results, including a first diffraction mode, a light intensity of which indicates the relative distance between the top surfaces of the plurality of hydrogel strips and the reflective surface.