University of Minnesota

Northwestern University

C Daniel Frisbie

Mark C Hersam

Ethan B Secor

Lorraine F Francis

Woo Jin Hyun

Sooman Lim

Timothy P Lodge

Kevin David Dorfman

Scott P White

The disclosure describes methods, devices, and system that measure chemisorption potentiometrically for detection of target molecules. In one example, a device includes a semiconductor, an ionic conducting electronic insulator coupled to the semiconductor, a floating gate electrode comprising a first portion and a second portion, the first portion being coupled to the semiconductor via the ionic conducting electronic insulator, an aqueous buffer, and a primary gate electrode coupled to the second portion of the floating gate electrode via the aqueous buffer. The second portion of the floating gate electrode may comprise a probe configured to react with a target chemical composition of a molecule to detect the presence of the molecule. Reaction with the target chemical composition may change an electrical property of the device and indicate the presence of the molecule in the aqueous buffer.

Electrolyte-gated transistors for detection of molecules

Graphene ink compositions as can be utilized with gravure and screen printing processes, to provide flexible electronic components with high-resolution printed graphene circuitry.

High-resolution patterning of graphene by screen and gravure printing for highly flexible printed electronics

An ion gel including an ionic liquid and a block copolymer. The block copolymer includes at least three blocks, and the block copolymer forms a self-assembled ion gel in the ionic liquid. Also, thin film transistors including an ion gel insulator layer, capacitors including an ion gel insulator layer, integrated circuits including transistors including an ion gel insulator layer, and methods for forming each of these devices are described.

Ion gels and electronic devices utilizing ion gels

Growing community of inventors

Mahtomedi, MN, United States of America

C Daniel Frisbie