Updated: 2012-05-18 04:31:08
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 18, 2012 Samsung develops graphene device for transistor use No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Jakarta Post Jakarta Post Samsung Electronics Co . the world's largest computer memory-chip maker , said Friday it has developed a graphene device that could help revolutionize the capabilities of transistors . Samsung's advanced institute of technology said it has successfully www.thejakartapost.com This article was posted on May 17, 2012 at 11:31 PM and is filed under News You can follow any responses to this entry through the RSS
Updated: 2012-05-18 02:26:29
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 18, 2012 Electron-hole puddles in the absence of charged impurities No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Authors : Marco Gibertini Andrea Tomadin Francisco Guinea Mikhail I . Katsnelson Marco Polini It is widely believed that carrier-density inhomogeneities electron-hole puddles” in single-layer graphene on a substrate like quartz are due to charged impurities located close to the graphene sheet . Here we demonstrate by using a Kohn-Sham-Dirac density-functional scheme that corrugations in a real sample are sufficient to determine
Updated: 2012-05-18 02:26:26
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 18, 2012 Graphene nanoribbons subject to gentle bends No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Authors : Pekka Koskinen Since graphene nanoribbons are thin and flimsy , they need support . Support gives firm ground for applications , and adhesion holds ribbons flat , although not necessarily straight : ribbons with high aspect ratio are prone to bend . The effects of bending on ribbons’ electronic properties , however , are unknown . Therefore , this article examines the electromechanics of planar and gently bent graphene nanoribbons
Updated: 2012-05-18 02:26:21
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 18, 2012 Valley and spin polarization from graphene line defect scattering No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Authors : Daniel Gunlycke Carter T . White Quantum transport calculations describing electron scattering off an extended line defect in graphene are presented . The calculations include potentials from local magnetic moments recently predicted to exist on sites adjacent to the line defect . The transmission probability is derived and expressed as a function of valley , spin , and angle of incidence of an electron at the
Updated: 2012-05-18 00:26:02
Liling Jin, Kai Yang, Kai Yao, Shuai Zhang, Huiquan Tao, Shuit-Tong Lee, Zhuang Liu and Rui Peng ACS NanoDOI: 10.1021/nn300217z dx.doi.org
Updated: 2012-05-17 22:22:35
Phys.OrgKansas State University researchers have come closer to solving an old challenge of producing graphene quantum dots of controlled shape and size at large densities, which could revolutionize electronics and optoelectronics.and more » phys.org
Updated: 2012-05-17 19:55:15
The absence of defects and surface oxides at a graphene/silicon interface enables voltage control of graphene devices.Authors: Heejun Yang, Jinseong Heo, Seongjun Park, Hyun Jae Song, David H. Seo, Kyung-Eun Byun, Philip Kim, InKyeong Yoo, Hyun-Jong Chung, Kinam Kim www.sciencemag.org
Updated: 2012-05-17 19:42:06
Nanowerk LLCNanowerk LLC(Nanowerk News) University at Buffalo researchers are making significant progress on rust-proofing steel using a graphene-based composite that could serve as a nontoxic alternative to coatings that contain hexavalent chromium, a probable carcinogen.and more » www.nanowerk.com
Updated: 2012-05-17 19:40:11
Enrique Cobas, Adam L. Friedman, Olaf M. J. van’t Erve, Jeremy T. Robinson and Berend T. Jonker Nano LettersDOI: 10.1021/nl3007616 dx.doi.org
Updated: 2012-05-17 18:26:11
UB News CenterA graphene-based coating under development at UB keeps a piece of steel rust-free (foreground), in stark comparison with a rusted sheet of steel (background). UB researchers are developing graphene-based anti-corrosion coatings.and more » www.buffalo.edu
Updated: 2012-05-17 17:44:00
A look back at the moments that have shaped Facebook's success.
Updated: 2012-05-17 16:39:40
Author(s): Bernard R. Matis, Felipe A. Bulat, Adam L. Friedman, Brian H. Houston, and Jeffrey W. BaldwinA giant negative magnetoresistance of up to 28% at 2.5 T is observed in plasma hydrogenated graphene at the charge neutrality point without any sign of saturation at 2.0 K. A detailed analysis of the gate voltage dependence demonstrates a suppression of the giant negative magnetoresistance, which is...[Phys. Rev. B 85, 195437] Published Thu May 17, 2012 link.aps.org
Updated: 2012-05-17 16:39:34
Author(s): H. Ochoa, A. H. Castro Neto, and F. GuineaThe differences between spin relaxation in graphene and in other materials are discussed. For relaxation by scattering processes, the Elliot-Yafet mechanism, the relation between the spin and the momentum scattering times, acquires a dependence on the carrier density, which is independent of the sca...[Phys. Rev. Lett. 108, 206808] Published Thu May 17, 2012 link.aps.org
Updated: 2012-05-17 15:31:19
Discovery NewsGraphene has been touted as a miracle material in electronics; now it can stop rust. Keeping rust off steel -- especially on a car -- is often a losing battle. The body is protected by the paint, but that can scratch. Bumpers are coated in chrome, ...and more » news.discovery.com
Updated: 2012-05-17 12:22:36
nanotechweb.orgAn unusual parameter – low-frequency electronic noise – could be exploited to make selective and highly sensitive gas sensors based on pristine graphene. The finding means that the material no longer has to be functionalized for it to be able to detect ... nanotechweb.org
Updated: 2012-05-16 22:39:00
Published by MIT English en Español auf Deutsch in Italiano 中文 em Português Subscribe Login Search Home Computing Web Communications Energy Materials Biomedicine Business Magazine Technology Review May June 2012 Subscribe now The TR10 Our annual list of 10 technologies that could change the world . This year : Light-field photography . Solar microgrids . Crowdfunding . Facebook's Timeline . And more . The Library of Utopia People Power 2.0 Letters and Comments From the Editor Graphiti Notebooks Demo Hack To Market Q A Photo Essay Business Impact Reviews From the Labs 51 Years Ago Blogs Video DNA Sequencing Detects Residual Leukemia Genomic method is more sensitive than other techniques looking for lingering cells . post-chemotherapy Susan Young 05 16 2012 GenomeWeb Daily News reports that
Updated: 2012-05-15 11:00:00
Published by MIT English en Español auf Deutsch in Italiano 中文 em Português Subscribe Login Search Home Computing Web Communications Energy Materials Biomedicine Business Magazine Technology Review May June 2012 Subscribe now The TR10 Our annual list of 10 technologies that could change the world . This year : Light-field photography . Solar microgrids . Crowdfunding . Facebook's Timeline . And more . The Library of Utopia People Power 2.0 Letters and Comments From the Editor Graphiti Notebooks Demo Hack To Market Q A Photo Essay Business Impact Reviews From the Labs 51 Years Ago Blogs Video First Simulation of Quantum Tunneling on a Quantum Computer Quantum tunneling had always been thought too complex to simulate on today's simple quantum computers . Now a new approach to quantum
Updated: 2012-05-15 00:00:00
Conference: 11 Sep 2012 - 13 Sep 2012, Royal Dublin Society, Dublin, Ireland.
Updated: 2012-05-15 00:00:00
Conference: 20 Aug 2012 - 23 Aug 2012, Birmingham, United Kingdom.
Updated: 2012-05-14 00:00:00
Conference: 21 Sep 2012 - 22 Sep 2012, Louisville, Kentucky, United States.
Updated: 2012-05-13 00:15:32
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 12, 2012 Resonant Raman spectroscopy of graphene grown on copper substrates No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Publication year : 2012 : Source Solid State Communications Sara D . Costa , Ariete Righi , Cristiano Fantini , YuFeng Hao , Carl Magnuson , Luigi Colombo , Rodney S . Ruoff , Marcos A . Pimenta A study of resonant Raman spectroscopy of the as-grown graphene on copper foils is presented . Different laser energies have been used to excite the sample , in order to obtain the dependence of the Raman features intensities ,
Updated: 2012-05-07 19:19:25
Doping carbon nanotubes with boron while they are being formed produces a novel molecular architecture formed by boron induced kinks and linkages. These nanosponges can be used repeatedly to absorb and retrieve or burn spilled oil.
Updated: 2012-05-06 02:44:57
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 5, 2012 Free radicals and graphite No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Publication year : 2012 : Source Carbon , Volume 50, Issue 9 H.P . Boehm The basal faces of crystalline graphite do not react with molecular oxygen at ambient or moderately raised temperatures . Free radicals , however , react with exposed graphene layers of graphites and carbon materials . Such reactions can be exploited for the functionalization of carbon surfaces . Disordered carbons , e.g . activated carbons , are slowly oxidized also at room temperature
Updated: 2012-05-04 02:36:24
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 3, 2012 Ab initio calculations of optical properties of B2C graphene sheet No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Publication year : 2012 : Source Solid State Communications , Volume 152, Issue 12 Masoud Shahrokhi , Sirvan Naderi , Ali Fathalian The electronic and the linear optical properties of a monolayer B 2 C graphene sheet are investigated through the density functional theory . The dielectric tensor is derived within the random phase approximation RPA Specifically , the dielectric function , absorption coefficient , optical
Updated: 2012-05-04 02:36:22
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 3, 2012 Transport properties of AA-stacking bilayer graphene nanoribbons No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Publication year : 2012 : Source Solid State Communications , Volume 152, Issue 12 Ning Xu , B.L . Wang , Daning Shi , Chao Zhang The transport properties of AA-stacking bilayer graphene nanoribbons GNs have been explored by using the nonequilibrium Green’s function method and the Landauer–Büttiker formalism . It is found that in the case of zero bias , the interlayer coupling has pronounced effects on the conductance of
Updated: 2012-05-04 02:36:21
Log In Two-Dimensional News and Commentary Home Blog News Papers Newly Accepted Preprints About Contact Subscribe by email RSS May 3, 2012 Graphene growth on h-BN by molecular beam epitaxy No Ratings Yet Loading Hello there If you are new here , you might want to subscribe to the RSS feed for updates on this . topic Powered by WP Greet Box WordPress Plugin Publication year : 2012 : Source Solid State Communications , Volume 152, Issue 12 Jorge M . Garcia , Ulrich Wurstbauer , Antonio Levy , Loren N . Pfeiffer , Aron Pinczuk , Annette S . Plaut , Lei Wang , Cory R . Dean , Roberto Buizza , Arend M . Van Der Zande , James Hone , Kenji Watanabe , Takashi Taniguchi The growth of single layer graphene nanometer size domains by solid carbon source molecular beam epitaxy on hexagonal boron
Updated: 2012-04-26 00:36:50
Calculations using density functional theory have demonstrated that graphene can be made piezoelectric by adsorbing atoms or molecules on one surface, or by adsorbing different atoms or molecules on each surface.
Updated: 2012-04-22 01:44:34
Creating a superlattice by placing graphene on boron nitride may allow control of electron motion in graphene and make graphene electronics practical.
