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:
Jul. 23, 2002
Filed:
Sep. 02, 1998
Applicant:
Inventors:
Assignee:
The University of Leeds, Leeds, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G07N 2/700 ;
U.S. Cl.
CPC ...
G07N 2/700 ;
Abstract
The present invention discloses a fluid sensing device comprising a substrate having at least one type of dicotic liquid crystals disposed therein and arranged to form an array of columnar structures and a contact means for measuring the flow of electric charge through the upper part of the columnar structure surface. Also disclosed is a method for detecting a fluid comprising the steps of: exposing a sensing device to a fluid so that the fluid interacts with the surface of the discotic liquid crystal; applying a voltage to the contact means; measuring a flow of electric charge; and, analyzing a variable current flow to identify the fluid.