Ridges and wrinkles in a graphene sheet can affect electrons and cause them to behave as they do inside electrical components, creating the possibility for smaller and faster computer processors Source: https://www.newscientist.com/article/2267964-wrinkling-atom-thin-layers-of-carbon-could-make-tiniest-chips-yet/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Tag: graphene
Quantum tunneling in graphene advances the age of terahertz wireless communications
Scientists from MIPT, Moscow Pedagogical State University and the University of Manchester have created a highly sensitive terahertz detector based on the effect of quantum-mechanical tunneling in graphene. The sensitivity of the device is already superior to commercially available analogs based on semiconductors and superconductors, which opens up prospects for applications of the graphene detector in wireless communications, security systems, radio…
Physicists observe competition between magnetic orders
They are as thin as a hair, only a hundred thousand times thinner—so-called two-dimensional materials, consisting of a single layer of atoms, have been booming in research for years. They became known to a wider audience when two Russian-British scientists were awarded the Nobel Prize in Physics in 2010 for the discovery of graphene, a building block of graphite. The special…
‘Magic’ angle graphene and the creation of unexpected topological quantum states
Electrons inhabit a strange and topsy-turvy world. These infinitesimally small particles have never ceased to amaze and mystify despite the more than a century that scientists have studied them. Now, in an even more amazing twist, physicists have discovered that, under certain conditions, interacting electrons can create what are called ‘topological quantum states.’ This finding, which was recently published in the…
Twisted Graphene Could Power a New Generation of Superconducting Electronics
sciencehabit shares a report from Science Magazine: In 2018, a group of researchers at the Massachusetts Institute of Technology (MIT) pulled off a dazzling materials science magic trick. They stacked two microscopic cards of graphene — sheets of carbon one atom thick — and twisted one ever so slightly. Applying an electric field transformed the stack from a conductor to an…
Rare magnetism found in the world’s strongest material
Strange things happen when you stack and twist graphene. Source: https://www.livescience.com/graphene-hides-rare-magnetism.html
Here Comes the Internet of Plastic Things, No Batteries Or Electronics Required
An anonymous reader quotes a report from IEEE Spectrum: When technologists talk about the “Internet of Things” (IoT), they often gloss over the fact that all these interconnected things need batteries and electronics to carry out the job of collecting and processing data while they’re communicating to one another. This job is made even more challenging when you consider that many…
5G Obliterates Your Phone Battery, But a Power-Saving Fix Is Coming
It’s no secret that 5G networks drain battery. “To rectify that grim side effect, researchers at the University of Texas at Austin and the University of Lille in France have developed a new radio-frequency switch they say is 50 times more energy efficient than the current solid-state switches,” reports Popular Mechanics. From the report: The solution is actually rooted right in…
Ultra-thin sail could speed journey to other star systems
A tiny sail made of the thinnest material known—one carbon-atom-thick graphene—has passed initial tests designed to show that it could be a viable material to make solar sails for spacecraft. Source: https://phys.org/news/2020-05-ultra-thin-journey-star.html…
Graphene Solar Thermal Film Could Be a New Way To Harvest Renewable Energy
An anonymous reader quotes a report from IEEE Spectrum: Researchers at the Center for Translational Atomaterials (CTAM) at Swinburne University of Technology in Melbourne, Australia, have developed a new graphene-based film that can absorb sunlight with an efficiency of over 90 percent, while simultaneously eliminating most IR thermal emission loss — the first time such a feat has been reported. The…