Ice Miller LLP
Reflective diffractometric hydrogel sensor for biological and chemical detection
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.
Purdue Research Foundation Board of Regents, The University of Texas System
G B
G01B B82Y
inventional additional
Zhenwen Venkata Naga Lakshmi Rekha Cagri Babak Andrew Chun-Li
Ding Patchigolla Savran Ziaie Ellington Chang