graphene – Page 7 – TechConnect Briefs

Ultrasonically-Assisted Preparation and Functionalization of Graphene

Hielscher K., Hielscher Ultrasonics, DE

Since the extraordinary characteristics of graphite and graphene are known, several methods for its preparation have been developed. Beside to chemical production of graphenes from graphene oxide in multi-step processes, for which very strong oxidizing [...]

Competitive Binding of Natural Amphiphiles to Graphene derivatives

Radic S., Geitner N., Podila R., Ke P.C., Ding F., Clemson University, US

Understanding the interaction between graphene derivatives and natural amphiphiles in biological and environmental milieu is important for the biosustainability and biocompatibility of graphene nanotechonology. Using rapid discrete molecular dynamics simulations, we systematically studied the binding [...]

High Performance Supercapacitors Based on Thermal Reduced Graphene Oxide

Perego D., Franz S., Bestetti M., Borioli C., Politecnico di Milano, IT

THERMALLY REDUCED GRAPHENE OXIDE BASED SUPERCAPACITORS HAVE BEEN FABRICATED AND TESTED. ELECTRODES BASED ON METAL SUBSTRATE (TI, AISI304, NI, AL) WERE FABRICATED BY EITHER BY ELECTROPHORESIS AND SPRAY COATING OF GRAPHENE OXIDE SOLUTIONS. ELECTROCHEMICAL TEST [...]

High Throughput Screening of Nanomaterials: The Arkansas Research Consortium in Nanotoxicity, a partnership between Arkansas and the FDA

Howard P.C., Biris A.S., Salamo G.J., Zharov V.P., Buchanan R.A., Arkansas Research Alliance, US

The state of Arkansas and the FDA Center of Toxicological Research have begun a collaborative effort to develop techniques for high-throughput, rapid screening of existing and yet-to-be developed nanomaterials. To accomplish this the Arkansas Research [...]

Reliable nanoscale electrical characterization using Graphene-coated Atomic Force Microscope tips

Lanza M., Bayerl A., Reguant M., Lv P., Rubio C., Porti M., Nafria M., Duan H.L., Peking University, CN

Electrical characterization at the nanoscale is an essential procedure for analyzing the performance of many materials used at both industry and academia. In this field, one of the most powerful tools is the Conductive Atomic [...]

Wireless Graphene-Based Quantum Capacitance Sensors for Continuous Glucose Monitoring

Olson E.J., Deen D.A., Ebrish M.A., Basu A., Kudva Y.C., Mukherjee P., Koester S.J., University of Minnesota, US

We describe a revolutionary concept for in vivo biosensing that utilizes the quantum capacitance effect in graphene to realize an ultra-small passive wireless sensor. The unique properties of graphene make it attractive for sensing applications. [...]

Photoconductivity of Reduced Graphene Films

Loomis J., Panchapakesan B., University of Louisville, US

In this paper, we report large photocurrents in air-assisted depositions of reduced graphene films (derived from reduced single layer graphene oxide) upon illumination with near-infrared (NIR) light. NIR-induced charge carrier generation and subsequent separation at [...]

Rapid Deposition of Graphene Layers in MxRAM Devices

Boerger B., Garcia S., VersuFLEX Technologies LLC, US

A novel, scalable method is presented for depositing ultra-thin micro/nano-coatings to 20 nm, or particles < 2m/min. A lab bench process tool based on this technique was built and is shown, applied to the challenge [...]

Ultrasonically-Assisted Preparation and Functionalization of Graphene

Hielscher K., Hielscher Ultrasonics, DE

Since the extraordinary characteristics of graphite and graphene are known, several methods for its preparation have been developed. Beside to chemical production of graphenes from graphene oxide in multi-step processes, for which very strong oxidizing [...]

Fabrication and Characterization of Carbon Nanotube/Graphene Hybrid Foam

Zhang M., Cui Y., Li S., Florida State University, US

CNT foam is a material with a porous structure constructed with nano-porous carbon, carbon nanotubes (CNTs). It is expected that CNT foam derives many of its functions from both its nanostructure and its microstructure and, [...]