Northwestern University

Harvard College

University of Minnesota

Pradyumna L Prabhumirashi

Mark C Hersam

Michael L Geier

Kanan P Puntambekar

Yu Teng Liang

Ethan B Secor

Jennifer Ann Lewis

Weichao Xu

Hyungil Kim

Bok Y Ahn

A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.

Methods for preparation of concentrated graphene ink compositions and related composite materials

A method of fabricating a CMOS logic device with SWCNTs includes forming a plurality of local metallic gate structures on a substrate by depositing a metal on the substrate; forming a plurality of contacts on the substrate; and depositing the SWCNTs on the substrate, and doping a certain area of the SWCNTs to form the CMOS logic device having at least one NMOS transistor and at least one PMOS transistor. Each of the NMOS and PMOS transistors has a gate formed by one of the local metallic gate structures, and a source and a drain formed by two of the contacts respectively. The gate of each PMOS transistor and the gate of each NMOS transistor are configured to alternatively receive at least one input voltage. At least one of the drain of the PMOS transistor and the drain of the NMOS transistor is configured to output an output voltage.

Ultralow power carbon nanotube logic circuits and method of making same

In one embodiment, a complementary metal-oxide-semiconductor (CMOS) logic device formed with single-walled carbon nanotubes (SWCNTs) includes: at least one p-type metal-oxide-semiconductor (PMOS) thin-film transistor (TFT) formed with the SWCNTs, and at least one n-type metal-oxide-semiconductor (NMOS) TFT formed with the SWCNTs, where each of the at least one PMOS TFT and the at least one NMOS TFT has a gate, a source and a drain. The gate of each of the at least one PMOS TFT and the gate of each of the at least one NMOS TFT is configured to alternatively receive at least one input voltage, and respectively includes a local metallic gate structure formed of a metal. At least one of the drain of the at least one PMOS TFT and the drain of the at least one NMOS TFT is configured to output an output voltage V.

Growing community of inventors

Chicago, IL, United States of America

Pradyumna L Prabhumirashi