Julie A Garcia

US Patent:

20210140932, May 13, 2021

Filed:

Dec 16, 2020

Appl. No.:

17/123337

Inventors:

- Kent OH, US
Elda HEGMANN - Kent OH, US
Marianne PRÉVÔT - Kent OH, US
Ahlam NEMATI - Kent OH, US
Julie VANEGAS GARCIA - Kent OH, US

International Classification:

G01N 33/00
G01N 27/12
G02F 1/1337

Abstract:

A sensor for detecting non-hazardous and especially hazardous gases and/or vapors comprises a liquid crystal cell generally having a standard substrate and a conductive electrode layer thereon. An alignment layer is desirably located on the electrode layer and contains one or more types of metal nanoparticles that cover at least a portion of the alignment layer. The nanoparticles contain at least one type of ligand thereon that is capable of sensing a specific type of non-hazardous or hazardous gas. The sensor is very sensitive and can detect the gases or vapors contained within air, or the like, up to 1 part per million.

US Patent:

20200355664, Nov 12, 2020

Filed:

Nov 13, 2018

Appl. No.:

16/640387

Inventors:

- Kent OH, US
Elda HEGMANN - Kent OH, US
Marianne PRÉVÔT - Kent OH, US
Ahlam NEMATI - Kent OH, US
Julie VANEGAS GARCIA - Kent OH, US

International Classification:

G01N 33/00
G01N 27/12
G02F 1/1337

Abstract:

A sensor for detecting non-hazardous and especially hazardous gases and/or vapors comprises a liquid crystal cell generally having a standard substrate and a conductive electrode layer thereon. An alignment layer is desirably located on the electrode layer and contains one or more types of metal nanoparticles that cover at least a portion of the alignment layer. The nanoparticles contain at least one type of ligand thereon that is capable of sensing a specific type of non-hazardous or hazardous gas. The sensor is very sensitive and can detect the gases or vapors contained within air, or the like, up to 1 part per million.