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Keyword: grapheneoxide

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  • A novel graphene quantum dot structure takes the cake

    08/23/2018 6:26:43 PM PDT · by BenLurkin · 7 replies
    phys.org ^ | August 23, 2018 by | Ben P. Stein
    In a marriage of quantum science and solid-state physics, researchers at the National Institute of Standards and Technology (NIST) have used magnetic fields to confine groups of electrons to a series of concentric rings within graphene, a single layer of tightly packed carbon atoms. This tiered "wedding cake," which appears in images that show the energy level structure of the electrons, experimentally confirms how electrons interact in a tightly confined space according to long-untested rules of quantum mechanics. The findings could also have practical applications in quantum computing. Graphene is a highly promising material for new electronic devices because of...
  • Team led by Indian-American develops trickle-down method to ‘grow’ graphene

    08/06/2018 9:10:38 AM PDT · by 2ndDivisionVet · 9 replies
    The Tribune ^ | August 6, 2018 | IANS
    By making carbon leak (trickle down) through cracks on copper, researchers have developed a new process for “growing” graphene directly on materials used for nano-scale electronic applications, thereby opening the way to produce high-performance electronic devices. This versatile process, developed by a team of chemical engineers led by Indian-American Vikas Berry at the University of Illinois at Chicago (UIC) in the US, enables graphene to be economically grown on almost any semiconducting or dielectric substrate of relevance to the electronic industry, the researchers claim. They have reported this new method in the journal “ACS Applied Materials and Interfaces” of the...
  • Graphene confines light to one atom to enable ultra small optical switches, detectors and sensors

    05/16/2018 4:56:57 PM PDT · by 2ndDivisionVet · 16 replies
    Next Big Future ^ | May 16, 2018 | Brian Wang
    Researchers have been able to confine light down to a space one atom, the smallest possible. This will pave the way to ultra-small optical switches, detectors and sensors. Light can function as an ultra-fast communication channel, for example between different sections of a computer chip, but it can also be used for ultra-sensitive sensors or on-chip nanoscale lasers. There is currently much research into how to further shrink devices that control and guide light. New techniques searching for ways to confine light into extremely tiny spaces, much smaller than current ones, have been on the rise. Researchers had previously found...
  • Graphene Makes Concrete Stronger While Reducing Carbon Emissions

    04/30/2018 3:58:45 PM PDT · by 2ndDivisionVet · 28 replies
    Clean Techica ^ | April 30, 2010 | Steve Hanley
    Concrete is one of the most widely used building materials in the world, but it also is responsible for about 5% of all global carbon dioxide emissions according to the Earth Institute at Columbia University. Those emissions result directly from the conversion of limestone into cement and indirectly by burning fuel to heat the limestone to 1400º C, the temperature required to initiate the conversion process. “Cement manufacturing is highly energy and emissions intensive because of the extreme heat required to produce it. Producing a ton of cement requires 4.7 million BTU of energy, equivalent to about 400 pounds of...
  • Why is graphene taking so long?

    03/30/2018 5:38:54 PM PDT · by Bellflower · 35 replies
    techradar.com ^ | 3/5/2018 | Jamie Carter
    Graphene is proper 'disruptive technology'. Every press release in the tech industry now contains that awful phrase, but graphene is the only material capable of changing the world of electronics as we know it. It's ultra-light, just an atom thin, and yet it’s 200 times stronger than steel. It's flexible, transparent, and more conductive than copper. Scientists have been promising stronger, lighter, flexible products, faster transistors, bendable phones, and many other breakthrough graphene gadgets for over a decade. So, what's taking scientists so long to make the graphene era a reality? Or, is it really taking as long as some...
  • Eager to dye your hair with ‘nontoxic’ graphene nanoparticles? Not so fast!

    03/24/2018 9:38:20 PM PDT · by upchuck · 28 replies
    WTOP/AP ^ | Mar 20, 2018
    Graphene is something of a celebrity in the world of nanoscale materials. Isolated in 2004 by Nobel Prize winners Andre Geim and Konstantin Novoselov, these ultrathin sheets of carbon atoms are already finding novel uses in areas like electronics, high-efficiency heating systems, water purification technologies and even golf balls. According to recent research published in the journal Chem, hair dyes can now be added to this list. But how safe and responsible is this new use of the carbon-based wonder-material? Northwestern University’s press release proudly announced, “Graphene finds new application as nontoxic, anti-static hair dye.” The announcement spawned headlines like...
  • Graphene tested in microgravity for first time

    02/04/2018 8:41:29 PM PST · by upchuck · 15 replies
    New Atlas ^ | Jan 31, 2018 | Michael Irving
    Everyone's favorite wonder material, graphene, has been wrung through just about every experiment on Earth – but how does it fare beyond our planet? A European team has tested graphene under microgravity conditions for the first time, an important step towards realizing the material's promising applications in space. For those not familiar with the stuff, graphene is made of sheets of carbon just a single atom thick, and it boasts an impressive array of superpowers. It is an excellent conductor of heat and electricity, and it's incredibly strong, light and flexible. This combination makes graphene perfect for use in space....
  • Using crumpled graphene balls to make better batteries

    01/18/2018 11:38:20 AM PST · by Red Badger · 9 replies
    techxplore.com ^ | 01/18/2018 | by Amanda Morris, Northwestern University
    Six years ago, Jiaxing Huang discovered crumpled graphene balls -- novel ultrafine particles that resemble crumpled paper balls. Credit: Jiaxing Huang ___________________________________________________________________________________________________________________________________________________________ Lithium metal-based batteries have the potential to turn the battery industry upside down. With the theoretically ultra-high capacity of lithium metal used by itself, this new type of battery could power everything from personal devices to cars. "In current batteries, lithium is usually atomically distributed in another material such as graphite or silicon in the anode," explains Northwestern University's Jiaxing Huang. "But using an additional material 'dilutes' the battery's performance. Lithium is already a metal, so why not...
  • 9 amazing uses for graphene, from filtering seawater to smart paint

    01/14/2018 10:43:30 AM PST · by Swordmaker · 22 replies
    Digital ^ | January 14, 2014 | By Luke Dormehl
    Graphene is a single layer of graphite — also known as that soft material commonly found in pencil lead — with the atoms arranged in a honeycomb-like, hexagonal pattern. While that description is decidedly unexciting, graphene is actually emerging as one of science’s most versatile new materials. Just one atom thick (or thin, depending on how you think about it), graphene is among the strongest materials in the known universe, with 100 times the strength of steel, an astonishing amount of flexibility, and a whole lot of other talents lurking beneath the surface. Do you remember that classic scene from...
  • Two Layers of Graphene Make Diamond-Hard Armor That Can Stop a Bullet

    12/27/2017 7:36:05 AM PST · by Lazamataz · 95 replies
    Futurism ^ | Dec 21, 2017 | Kyree Leary
    IAMOND-HARD ARMOR The media tends to depict bullet-proof armor as something that’s thick and heavier than regular clothes. Despite being for bodily protection, the added bulk of that armor might restrict a person’s movements. But scientists at the City University of New York’s Advanced Science Research Center (ASRC) have found that diamond-hard armor doesn’t need to be thick. The key to less-bulky protection is graphene, a tightly-packed layer of bonded carbon atoms one million times thinner than a piece of paper. The researchers discovered that two layers of graphene stacked on top of one another can temporarily become as hard...
  • Graphene running shoes will hit the market next year

    12/26/2017 8:25:09 PM PST · by Bellflower · 34 replies
    Techcrunch.com ^ | Dec 9, 2017 | Brian Heater
    Running shoes and graphene were made for each other. One is always in search of the latest gimmick and the other has produced some of the most stunning in recent memory. The University of Manchester, long a leading force in research surrounding the one-atom-thick material, has teamed up with British sportswear brand inov-8 to bring graphene to footwear. Unlike most of the research we’ve seen around science’s recent favorite miracle material, these things are headed to the market in our lifetimes — a seeming miracle in and of itself. In fact, they’re due out next year, priced at a steep,...
  • Samsung develops 'graphene ball' to speed up battery charging

    11/27/2017 1:51:11 AM PST · by TigerLikesRooster · 42 replies
    ZDNet ^ | November 27, 2017 | Cho Mu-Hyun
    ​Samsung develops 'graphene ball' to speed up battery charging Samsung Advanced Institute of Technology (SAIT) has synthesized a 'graphene ball' that can be used to make lithium-ion batteries charge five times faster. By Cho Mu-Hyun | November 27, 2017 -- 05:08 GMT (13:08 GMT+08:00) | Topic: Innovation Samsung Electronics' research arm has successfully synthesized a "graphene ball" that can be used to make lithium-ion batteries last longer and charge faster, the company has said. Samsung Advanced Institute of Technology (SAIT) said using graphene ball material to make batteries will increase their capacity by 45 percent and increase their charging speed...
  • Graphene and other carbon nanomaterials can replace scarce metals

    09/30/2017 9:41:20 AM PDT · by 2ndDivisionVet · 5 replies
    Phys Org ^ | September 19, 2017
    Scarce metals are found in a wide range of everyday objects around us. They are complicated to extract, difficult to recycle and so rare that several of them have become "conflict minerals" which can promote conflicts and oppression. A survey at Chalmers University of Technology now shows that there are potential technology-based solutions that can replace many of the metals with carbon nanomaterials, such as graphene. They can be found in your computer, in your mobile phone, in almost all other electronic equipment and in many of the plastics around you. Society is highly dependent on scarce metals, and this...
  • Confirmed: Electrons Flowing Like Liquid in Graphene Are Insanely Superconductive

    08/23/2017 12:13:26 AM PDT · by Enchante · 43 replies
    Science Alert ^ | August 23, 2017 | Fiona MacDonald
    Electrons have been caught flowing through graphene like a liquid, reaching limits physicists thought were fundamentally impossible. This type of conductance is known as 'superballistic' flow, and this new experiment suggests it could revolutionise the way we conduct electricity. If that's not crazy enough, the super-fast flows actually occur as a result of electrons bouncing off each other, something that high school physics tells us should slow conductivity down.
  • NanoGraphene Inc. Presents A Cutting-Edge Graphene Application

    07/22/2017 1:17:38 PM PDT · by 2ndDivisionVet · 23 replies
    Cision PR Newswire ^ | July 21, 2017
    NEW YORK, July 21, 2017 /PRNewswire/ -- The introduction of nanotechnology in the cement industry has a lot of benefits, some of which include reduced emission, improved crack resistance, reduced water absorption, improved strength and ductility. NanoGraphene Inc. is putting construction industries at the forefront of graphene concrete application with its high quality, environmentally clean and waterless graphene. Graphene is a thin layer of pure carbon derived from graphite. It is a unique material which has a wide array of applications and possesses some distinct properties. It is strong, flexible and a good conductor of electricity, hence widely used in...
  • Guide on how to remove Graphene, the substance being transmitted from the COVID-19 vaccinated to the Unvaccinated, from your body…

    12/26/2023 2:05:31 PM PST · by Roman_War_Criminal · 31 replies
    The Exposé ^ | 12/25/23 | The Exposé
    Graphene oxide, a substance that is poisonous to humans, has allegedly been found in the Covid 19 “vaccines”, in the water supply, in the air we breathe through chemtrails, and is even in our food supply. It interacts and is activated by electromagnetic frequencies (“EMF”), specifically the broader range of frequencies found in 5G which can cause even more damage to our health. The symptoms of graphene oxide poisoning and EMF radiation sickness are similar to those symptoms described as Covid. The bad news for those who have so far refused to get a single dose of the Covid-19 injection...
  • A graphene “tattoo” could help hearts keep their beat

    05/02/2023 5:58:22 AM PDT · by upchuck · 8 replies
    Science News ^ | Apr 23, 2023 | Meghan Rosen
    Some tattoos truly make the heart go pitter-patter. In rats, a graphene “tattoo” stuck to the heart could treat an abnormally sluggish beat. Like a futuristic pacemaker, the device delivered electrical signals that kept the heart pumping properly, scientists report online March 25 in Advanced Materials. The electronic device is currently a proof of concept, but a version for use in human hearts could be ready for testing within five years, estimates Igor Efimov, a cardiovascular engineer at Northwestern University in Chicago. Efimov and his colleagues have worked for years creating implantable devices that conform to the body. A main...
  • Doctors discover Graphene is being transmitted from the COVID Vaccinated to the Unvaccinated, destroying Blood Cells & causing Blood Clots

    04/01/2023 9:44:54 AM PDT · by RideForever · 72 replies
    The Expose ^ | 2/12/2022 | Dr. Philippe van Welbergen
    In his latest set of slides of blood samples taken from both “vaccinated” and unvaccinated people, Dr. Philippe van Welbergen demonstrated that the graphene being injected into people is organising and growing into larger fibres and structures, gaining magnetic properties or an electrical charge and the fibres are showing indications of more complex structures with striations. He also demonstrated that “shards” of graphene are being transmitted from “vaccinated” to vaccine-free or unvaccinated people destroying their red blood cells and causing blood clots in the unvaccinated. Dr. Philippe van Welbergen (“Dr. Philippe”), Medical Director of Biomedical Clinics, was one of the...
  • Unexpected Effect: Nanorippled Graphene Becomes a Powerful Catalyst

    03/17/2023 5:11:40 AM PDT · by Red Badger · 15 replies
    Scitech Daily ^ | MARCH 16, 2023 | By UNIVERSITY OF MANCHESTER
    Graphene Sheet Scientists have found that nanoripples in graphene make it a strong catalyst, even though it was expected to be chemically inert. Their research, published in PNAS, demonstrated that nanoscale corrugations on graphene’s surface accelerate hydrogen splitting as well as the best metallic-based catalysts, and this effect may be present in all 2D materials. *********************************************************************** A team of researchers led by Prof. Andre Geim from the National Graphene Institute (NGI) have discovered that nanoripples in graphene can make it a strong catalyst, contrary to general expectations that the carbon sheet is as chemically inert as the bulk graphite from...
  • New Forms of Exotic Superconductivity by Stacking Layers of Graphene

    03/09/2023 1:50:12 AM PST · by upchuck · 12 replies
    SciTechDaily ^ | Mar 9, 2023 | ISTA
    Thanks to Red Badger. Graphene is a strange material. Understanding its properties is both a fundamental question of science and a promising avenue for new technologies. A team of researchers from the Institute of Science and Technology Austria (ISTA) and the Weizmann Institute of Science has studied what happens when they layer four sheets of it on top of each other and how this can lead to new forms of exotic superconductivity. “Multilayered graphene has many promising qualities, ranging from widely tunable band structure and special optical properties to new forms of superconductivity—meaning being able to conduct electrical current without...