Title: Electro-chemical sensors, sensor arrays and circuits

Abstract

An electro-chemical sensor includes a first electrode, a second electrode spaced apart from the first electrode, and a semiconductor channel in electrical contact with the first and second electrodes. The semiconductor channel includes a trapping material. The trapping material reduces an ability of the semiconductor channel to conduct a current of charge carriers by trapping at least some of the charge carriers to localized regions within the semiconductor channel. The semiconductor channel includes at least a portion configured to be exposed to an analyte to be detected, and the trapping material, when exposed to the analyte, interacts with the analyte so as to at least partially restore the ability of the semiconductor channel to conduct the current of charge carriers.

Inventors:

Katz, Howard E.; Kong, Hoyoul

Issue Date:

2014-07-08

Research Org.:

Johns Hopkins Univ., Baltimore, MD (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1136991

Patent Number(s):

8772764

Application Number:

13/725,630

Assignee:

The Johns Hopkins University (Baltimore, MD)

Patent Classifications (CPCs):

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G2261/1412 - Saturated aliphatic units
C08G2261/1422 - containing OH groups
C08G2261/1426 - containing carboxy groups
C08G2261/3223 - containing one or more sulfur atoms as the only heteroatom, e.g. thiophene
C08G2261/364 - containing hetero atoms
C08G2261/92 - TFT applications
C08G2261/94 - Applications in sensors, e.g. biosensors
C08G61/126 - {with a five-membered ring containing one sulfur atom in the ring}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N27/414 - Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
G01N33/0057 - {for warfare agents or explosives

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DOE Contract Number:  

FG02-07ER46465

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION