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graphene News
Light Pulses Quickly Drive Electronic Currents Through Graphene
ERLANGEN, Germany, Sept. 27, 2017 — Physicists have used light to control an electronic current through graphene within one femtosecond. According to the research team this speed could be more than a thousand times faster than the speed of current transistors. While it’s possible to use light waves to direct electrons through semiconductors and insulating materials, according to researchers this approach has not yet been used to direct electrons — and thus control currents — through metals, because light
Graphene-Based Absorbers Could Enable Ultrafast Lasers in THz Range
MODENA, Italy, Sept. 15, 2017 — A terahertz (THz) saturable absorber has been created using printable graphene inks produced by liquid phase exfoliation (LPE) and deposited by transfer coating and ink jet printing. A THz saturable absorber, which decreases the absorption of light...
Rice University Researchers Pattern Laser-Induced Graphene on Wood
HOUSTON, Aug. 28, 2017 — A thin film of laser-induced graphene (LIG) has been patterned on a block of pine using CO2 laser scribing. Previous iterations of LIG have been made by heating the surface of a sheet of polyimide with a laser. Turning wood into graphene opens the...
Oxford Instruments, NPL, NGI Successfully Test Graphene Quantum, Metrology System
MANCHESTER, England, Aug. 14, 2017 — High technology developer Oxford Instruments NanoScience has completed a graphene characterization and primary resistance metrology project with the National Physical Laboratory (NPL) and the National Graphene Institute (NGI) at the University of...
Graphene Dress Hits the Catwalk
Aug 1, 2017 — The little black dress has taken on a very different look thanks to the Nobel Prize-winning “miracle material” called graphene, which is known for its extraordinary optoelectronic properties. Graphene is a 2D material that is a superb...
Light-Matter Interaction in Single Layer of Atoms
ORLANDO, Fla., June 26, 2017 — A new and more efficient way of detecting light and matter interactions at the atomic level has been discovered that could lead to advances in the emerging field of two-dimensional materials; it could also potentially lead to new ways of controlling...
Laser-Induced Graphene Inhibits Biofouling, Kills Bacteria
HOUSTON, June 14, 2017 — Laser-induced graphene (LIG) has been shown to be effective in resisting biofouling (the buildup of biological material on wet surfaces) and, when used as electrodes with a small applied voltage, in destroying bacteria. “This form of graphene...
Nano 'Sandwich' Could Enhance Optical Properties, Tunability of Graphene
HOUSTON, March 7, 2017 — Use of a “nanoscale sandwich,” made from two atom-thick slices of graphene around nanoclusters of magnesium oxide (MgO), could expand the optoelectronic properties for graphene. Researchers at Rice University, using previous experiments...
Laser Scribing Builds Molecular Biosensor
THUWAL, Saudi Arabia, Feb. 14, 2017 — Graphene electrodes that act as effective biosensors have been created using a laser to burn patterns into a polymer sheet. King Abdullah University of Science & Technology (KAUST) researchers used a technique called laser scribing which locally...
Graphene Alignment Technique Holds Promise for Nanophotonics
Jan 6, 2017 — Nanomaterials, such as nano-wires and nanotubes, are designed to have quantum confinement in one or two dimensions so that their properties in other dimensions can be engineered, differing from that of their corresponding bulk material. As such, the...
Graphene-Laced Silly Putty Creates Sensors
DUBLIN, Dec. 19, 2016 — By infusing silly putty (polysilicone) with graphene, researchers have produced an extremely sensitive sensor they call “G-putty.” They found that when the graphene was added, the silly putty was able to conduct electricity and became...
1.3-nm Photodetector Can Generate More Current Than Thicker Devices
DAEJEON, South Korea, Nov. 22, 2016 — A photodetector that is ten times smaller than current standard silicon diodes has been developed using molybdenum disulfide (MoS2) sandwiched between two graphene sheets. The 2D device, which has just one layer of MoS2, demonstrated the ability to...
Light-Initiated Hydrogenation of Graphene is Low Cost, Efficient
UPPSALA and GOTHENBURG, Sweden, Nov. 4, 2016 — A study has demonstrated that graphene, when irradiated with visible light, reacts with formic acid in a water solution to add extensive amounts of hydrogen to the graphene. Additionally, it was found that the irradiation of aromatic compounds such...
Protocols Introduced for Graphene-Based Array for Biophotonics Applications
MADISON, Wis., Oct. 17, 2016 — The fabrication and use of transparent graphene-based neural electrode arrays for applications in fluorescent microscopy, OCT and optogenetics have been described in detail by the researchers who developed the array. The arrays could provide...
Using Graphene to Lower the Cost and Footprint of LEDs
TAIPEI, Taiwan, Sept. 26, 2016 — A white LED (WLED) has been developed using a hybrid metal-organic framework (MOF) material, which provides electrically driven white light emission with a continuous spectrum that matches well with natural sunlight. It could offer an economical,...
Laser Treatment Boosts Conductivity in Printed Graphene
AMES, Iowa, Sept. 19, 2016 — Treating inkjet-printed, multilayer graphene electric circuits and electrodes with a pulsed-laser process improves electrical conductivity of the graphene without damaging paper, polymers or other fragile printing surfaces. The discovery of this...
Carbon Nanotube Market Poised for Growth
BOSTON, Sept. 12, 2016 — According to a report by Lux Research, the carbon nanotube market will grow to 560 million in 2025, driven by faster development of commercial applications, while the market for graphene will lag at $305 million, on account of slower adoption in...
De Silva Appointed to Nanotech Board
LOS ANGELES, Aug. 24, 2016 — Graphene technology developer Nanotech Energy Inc. has appointed Dr. Mahi de Silva to its board of directors. "We are delighted to announce that Dr. Mahi de Silva has joined our board,” said co-founders Dr. Jack Kavanaugh and Dr. Richard...
Graphene Photodetectors Offer Path to Novel Optoelectronics
BARCELONA, Spain, Aug. 19, 2016 — A novel way to detect and harvest low-energy photons using heterostructures made of 2D materials and graphene may overcome the limitations of conventional semiconductor devices and lead to greater speed and efficiency in optoelectronic applications....
Innovation in Surface Tracking Opens Doors to Raman Imaging Applications
Jul 14, 2016 — Scientists dream of being able to probe variations in the chemical composition and structure of materials without any form of sample preparation. Raman spectroscopy, a noncontact, nondestructive analysis tool that yields information on the chemical,...
Integrated Photonics: A Tale of Two Materials
Jul 7, 2016 — With its suitability for monolithic integration for optics and photonics, silicon has been widely hailed as the material of the future. But graphene — with its capacity for signal emission, transmission and detection — could be the next...
Simulation, Experiment Unite Graphene and Plasmonics
Jun 28, 2016 — Ever since a single-atom-thick film of graphite was first successfully synthesized back in 2004, graphene has been on a decade-long ride through applications ranging from photovoltaics and next-generation batteries to electronics.
Novel Design Increases Optical Efficiency in Graphene OLEDs
DAEJEON, South Korea, June 13, 2016 — Graphene-based OLED efficiency and flexibility has been shown to increase when the graphene is used as a transparent electrode (TE) and placed between titanium dioxide (TiO2) and conducting polymer layers. To improve the efficiency of graphene-based...
The Connected World: Banking on Innovations in Photonic Sensors
Apr 28, 2016 — The Internet of Things (IoT) is about to change how we live in almost every conceivable way, from driverless cars and smart cities to precision agriculture. In fact, the economic impact per year of all things IoT is projected to be $11.1 trillion a...
Graphene Plasmons Explored for Nanoscale Control of IR Light
SAN SEBASTIÁN, Spain, March 31, 2016 — The ability to capture IR light with graphene nanostructures could open new opportunities for ultrasmall and efficient photodetectors, sensors, and other photonic and optoelectronic nanodevices. Near-field image of a rectanglular graphene...
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June 2024
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