NewTechs » Graphene NanoPlatelets News

Nanotechnology research into graphene production could yield novel composites, touch-screen displays [www.nanowerk.com]

New graphene-based electronics could take a page out of the silicon electronics book [www.nanowerk.com]

Dozens of New Clean Technology and Nanotech Products Unveiled at TechConnect World Expo in Houston, Texas, May 5-6 May 05, 2009 09:00 AM US Eastern Timezone Hundreds of Vendors and Thousands of Attendees Make TechConnect World the Largest Nano and Clean Technology Expo in the US Houston, TX, May 5, 2009 — TechConnect World, in association with the Nano Science and Technology Institute (NSTI), and the Clean Technology and Sustainable Industries Organization (CTSI), announced that the TechConnect World Expo will officially open today at 10:00 AM, at the George R. Brown Convention Center. Hundreds of exhibitors and thousands of expo attendees are set to make TechConnect World the largest Clean, Bio and Nanotech event in the nation. Dozens of new products and technologies are expected to be unveiled on the show floor Tuesday and Wednesday of this week. A sampling of these announcements includes: Clean Technology ’09 News Announcements: Enhanced Biofuels (booth 101

Nanotek Instruments, Inc. (Dayton, OH) scientists Aruna Zhamu and Bor Z Jang have developed a supercritical fluid process for mass producing nano graphene platelets. The process produces pristine or non-oxidized nano graphene platelets (NGPs) that are highly conductive. According to U.S. Patent Application 20100044646, the process comprises: (i) subjecting a graphitic material to a supercritical fluid at a first temperature and a first pressure for a first period of time in a pressure vessel and then (ii) rapidly depressurizing the fluid at a fluid release rate sufficient for effecting exfoliation of the graphitic material to obtain the NGP material. Conductive NGPs can be used as a conductive additive in transparent electrodes for solar cells or flat panel displays (e.g., to replace expensive indium-tin oxide), battery and supercapacitor electrodes, and nanocomposite for electromagnetic wave interference (EMI) shielding and static charge dissipation, etc. The process is superior to

In a recent work published by our group [1] , we demonstrate how the size-effect sets in as graphene nanoribbons are scaled below 100 nm. Most materials, when they are scaled down to nanometer dimensions, exhibit a size-dependence of many of their properties - be it electrical resistivity or thermal conductivity. Graphene nanoribbons fabricated by electron-beam lithography showed a size-dependence onset at widths as large as 60 nm. [1] Y. Yang and R. Murali, “Impact of size effect on graphene nanoribbon transport,” IEEE Electron Device Letters.

Nanotek Patents New Nano Graphene MaterialsNanotek Instruments has been granted a patent for its new high-performing class of meso-porous nanocomposites, which will be produced by Angstron.The technology is based on the company’s breakthrough discovery of nano graphene platelets (NGPs).NGPs offer improved...

Nanotek Instruments, parent company of Angstron Materials, has been issued a US Patent for its development of a new high-performing class of meso-porous nanocomposites. The new nanocomposite provides a superior supercapacitor electrode material for uses that include hybrid electric vehicles (EVs), transportation and energy storage. The technology is based on the company’s breakthrough discovery of nano graphene platelets (NGPs). Angstron, the world leader in production of NGPs, will make the nanocomposite material. Angstron will provide the meso-porous NGP nanocomposites in two forms: NGPs coated with a thin layer of conducting polymer or surface functional groups and NGPs bonded by a conductive binder, coating, or matrix material such as a polymeric carbon. The platelets in these products are comprised of a sheet of graphite plane or multiple sheets of graphite plane with a thickness less than 10 nm and an average length, width, or diameter smaller than 500 nm. The binder or

Nanotek Instruments, parent company of Angstron Materials, has been issued a US Patent for its development of a new high-performing class of meso-porous nanocomposites. The new nanocomposite provides a superior supercapacitor electrode material for uses that include hybrid electric vehicles (EVs), transportation and energy storage. The technology is based on the company’s breakthrough discovery of nano graphene platelets (NGPs). Angstron, the world leader in production of NGPs, will make the nanocomposite material. Angstron will provide the meso-porous NGP nanocomposites in two forms: NGPs coated with a thin layer of conducting polymer or surface functional groups and NGPs bonded by a conductive binder, coating, or matrix material such as a polymeric carbon. The platelets in these products are comprised of a sheet of graphite plane or multiple sheets of graphite plane with a thickness less than 10 nm and an average length, width, or diameter smaller than 500 nm. The binder or

[div> Angstron Materials gets a patent for their nano-graphene supercapacitors Angstron’s NGPs (nano graphene platelets) offer a cost effective, high performance alternative to carbon nanotubes and nanofibers. The first company to isolate and successfully produce large quantities of single-layer and multi-layer graphene sheets, Angstron’s nano graphene solutions eliminate the viscosity and dispersion problems associated with processing advanced materials using carbon nanotubes and fibers. Other advantages include: The highest thermal conductivity known today (up to ~ 5,300 W/(mK), five times that of copper, at a density that is four times lower Exceptional in-plane electrical conductivity (up to ~ 20,000 S/cm) Fifty times stronger than steel Ultra-high Young’s modulus (approximately 1,000 GPa) and highest intrinsic strength (~ 130 GPa estimated) High specific surface area (up to… [[ This is a content summary only. Visit my website for full links, other content, and

Angstron Materials announced that they have been awarded a $1.494 million project to develop processes for mass-producing chemically modified (“functionalized”) Nano Graphene Platelets (NGP) for a nearly limitless number of applications in the aerospace, energy, defense, automotive and telecommunications markets. Angstron was selected for the award by the U.S. Commerce Department’s National Institute of Standards and Technology (NIST). Angstron developed NGPs as an alternative to carbon nanotubes, which are difficult to disperse in plastic and often have purity issues—not to mention the cost factor. NGPs have been shown to have striking material properties; among other things, it has the highest intrinsic strength and the highest thermal conductivity of all existing materials as well as exceptional in-plane electrical conductivity (up to ~ 20,000 S/cm)and electron mobility that is 100 times faster than silicon.