A recently developed aerosol-based method to make crumpled graphene sheets can overcome those problems, because like wadded paper balls, crumpled graphene sheets resist aggregation and compression. Jiayan Luo, Hee Dong Jang, and Jiaxing Huang of Northwestern University prepared a series of capacitors with increasing mass of crumpled graphene.
by Mitch Jacoby | February 18, 2013
To make the nanocomposite, Raffaele Mezzenga of ETH Zurich and his colleagues added graphene oxide sheets to a solution of silkworm proteins. The researchers also added a drop of hydrazine to reduce the graphene oxide to graphene. Stirring the black suspension for six hours at 70 °C produced silk-covered graphene sheets. The 3.5-nm silk fibers closely resemble the structure of natural spider silk rather than reconstituted silkworm silk, leading the team to believe that graphene directs self-assembly of the proteins to form fibers in a new way. The silk-graphene sheets are 100 times as conductive and about 10 times as tough as the pure graphene oxide starting material. The researchers showed that the composite readily supports growth of human cervical cancer cells, outperforming pure graphene as a cell growth medium. /articles/92/i6/Graphene-Directs-Silk-Nanofiber-Growth.html 20140210 Flexible, strong, conductive silk-graphene nanocomposite could be used as a scaffold for tissue engineering and in biosensor applications Concentrates 92 6 /magazine/92/09206.html Graphene Directs Silk Nanofiber Growth silk, graphene, nanocomposite, silkworm, tissue engineering con scitech Journal News and Community materials This AFM image reveals strands of silk nanofibers covering a sheet of graphene.
by Journal News and Community | February 10, 2014
The device’s novel graphene dielectric layer is made from stacked single-layer graphene films. Successive layers of graphene compensate for defects such as voids in individual layers to achieve the desired dielectric characteristics. The device also features an energy storage layer made from stacked sheets of graphene platelets.
July 28, 2014
—BASF Joins Singapore For Graphene Diodes “” BASF and researchers at the National University of Singapore’s Graphene Research Centre have formed a partnership to develop graphene for use in electronic devices, including organic light-emitting diodes. Their goal is to layer graphene films with organic materials to create more efficient and flexible devices. The Singapore researchers will synthesize and characterize the graphene; BASF will provide organic active materials. After researching graphene for years, BASF is now looking to speed up its device development, the company says. /articles/92/i4/BASF-Joins-Singapore-Graphene-Diodes.html 20140127 Concentrates 92 4 /magazine/92/09204.html BASF Joins Singapore For Graphene Diodes Graphene, OLED, flexible devices con bus Melody M. Bomgardner materials BASF researchers check on graphene manufacture. BASF This is a photo of researchers at BASF who are checking physical parameters during the manufacture of graphene- based substances. laboratories graphene BASF Joins Singapore For Graphene Diodes Chemical & Engineering News BASF Joins Singapore For Graphene Diodes BASF Joins Singapore For Graphene Diodes
by Melody M. Bomgardner | January 27, 2014