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graphene News
Ultrafast, Energy-Efficient All-Optical Switching with Plasmonic Waveguides
TOKYO, Dec. 20, 2019 — NTT and the Tokyo Institute of Technology (Tokyo Tech) have developed an all-optical switch that operates in the ultrafast regime with a response time in the femtosecond (fs) range and with energy consumption in the femtojoule (fJ) range. To achieve both speed and energy efficiency in the switching, the researchers combined a nanosize optical waveguide based on plasmonics with graphene. All-optical switches are expected to operate faster than switches that are electrically controlled.
Graphene Composite Improves Photocatalytic Activity Used to Degrade Pollutants
BERGAMO, Italy, Dec. 13, 2019 — Graphene Flagship partners developed a graphene-titania composite via a one-step procedure to widen and improve the applicability of “smog-eating” cement. The prepared composite showed enhanced photocatalytic activity, degrading up to...
Raman Scattering Helps Ensure Safety of Stem Cell Therapies
NEW BRUNSWICK, N.J., Nov. 12, 2019 — A research team at Rutgers University has developed a biosensor technology that could benefit applications for the treatment of neurological disorders through stem cell therapy. The hybrid biosensing platform consists of an array of ultrathin...
Graphene-Based Measurement Technique Boosts Optical Resolution
GÖTTINGEN, Germany, Oct. 11, 2019 — Researchers at the University of Göttingen have developed a new technique that exploits the unusual properties of graphene to optically measure extremely small distances — to the order of one ångström — for the first...
Terahertz Heterodyne Detection with Graphene Could Power Space Telescopes
GOTHENBURG, Sweden, Sept. 11, 2019 — Researchers at Chalmers University of Technology have demonstrated a terahertz (THz) detector made from graphene for use in next-generation astronomy detectors. A near zero-electron scenario, called Dirac point, was realized in graphene by...
Researchers Confirm Strong Magneto-Optical Resonance in Graphene
GENEVA, July 22, 2019 — The interaction between graphene and light suggests that graphene could be used to control infrared (IR) and terahertz (THz) waves. Researchers from the University of Geneva (UNIGE) and the University of Manchester have demonstrated an efficient way...
UV Light Used to Characterize Devices, Improve Performance
NAGOYA, Japan, June 13, 2019 — Researchers from the Nagoya Institute of Technology (NITech) used UV light to test the performance of miniaturized semiconductors for next-generation electronics. Specifically, the team determined the interface properties of a graphene-gallium...
Researchers Add Luminescence to Graphene
CÓRDOBA, Spain, May 15, 2019 — Researchers from the University of Córdoba have discovered a way to add the quality of luminescence to graphene. The researchers were able to incorporate luminescence into graphene without affecting its other properties, thus safeguarding the...
Graphene-Based Logic Gate Shows Promise for Quantum Computing
VIENNA, May 7, 2019 — Physicists from the University of Vienna and the Institute of Photonic Sciences have shown that graphene structures can be tailored to enable single photons to interact with one another. Their findings have led them to propose a new potential...
ICFO Showcases Graphene-Based Wearables at MWC 2019
BARCELONA, Spain, Feb. 25, 2019 — A new device from the Institute of Photonic Sciences (ICFO) will allow users to monitor their level of exposure to sunlight through a UV sensor. Designed as a flexible, transparent, disposable patch, it connects to a mobile device and alerts the...
Pure Graphene Generates Photocurrent Over Great Distances
RIVERSIDE, Calif., Jan. 8, 2019 — An international research team has discovered a new mechanism for ultra-efficient charge and energy flow in pristine graphene. The team was co-led by professor Nathaniel Gabor from the University of California, Riverside. The researchers fabricated...
Microwaveguides Could Speed Control of Light Flux in PICs
NIZHNY NOVGOROD, Russia, Jan. 2, 2019 — In order to increase the speed with which photonic integrated circuits (PICs) control light flux, researchers are for new materials with high optical nonlinearity. Among the promising materials are microwaveguides based on graphene, a material in...
Researchers Demonstrate Ultrafast Conversion of Light into Electricity
KIEL, Germany, Dec. 21, 2018 — A team from Kiel University (CAU) filmed the conversion of light energy into a solid — an exchange that takes place in a matter of femtoseconds (fs) — using an ultrafast camera system developed by the researchers. The team was able to observe the...
Graphene Sensor Detects Substances, Boosts Food Safety
HANGZHOU, China, Dec. 7, 2018 — A new sensor design makes use of the optoelectronic properties of graphene to enable simultaneous detection of multiple substances, including bacteria and other pathogens. The design is based on 2D graphene sheets, each just one atom thick, and was...
AMD Announces $966K Funding for Nano Research
BRIGHTON, England, Aug. 2, 2018 — Sensor developer Advanced Material Development (AMD) has raised a total of £750,000 ($875,000) in funding as the company launches its plan to take advantage of the commercial potential of applications for graphene and other 2D nanomaterials....
Graphene Photodetector Demonstrates Speed, High Responsivity
LOS ANGELES, July 5, 2018 — A new photodetector, made with graphene, can operate across a broader range of wavelengths and process images faster than existing photodetectors. The detector is also more sensitive to low levels of light than current technology. Researchers from...
Graphene Biointerface Optically Controls Heart Cells
SANTA BARBARA, Calif., May 29, 2018 — Researchers have developed a technique that allows them to speed up or slow down human heart cells, on command, by shining a light on the cells and varying the light intensity. The optical stimulation platform does not require genetic modification...
Squeezed Light Confined to Space of One Atom in Nanophotonics Advance
BARCELONA, Spain, April 25, 2018 — Using graphene, researchers have found a way to confine light down to a space that is one atom thick. The ability to confine light to such a small space could pave the way for ultrasmall optoelectronic devices. Previous work has shown that while...
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Thinnest of Materials Loom Large
Mar 27, 2018 — Only a few atomic layers thick, 2D materials such as graphene, the compound semiconductor germanium selenium, the transition metal dichalcogenide molybdenum ditelluride, and others could provide new photonic capabilities — better multispectral...
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Ultrathin Materials Combo in QD Enables Tunable Quantum Systems
VIENNA, March 21, 2018 — A new type of quantum dot (QD) has been developed that allows for more accurate and more widely tunable energy levels of confined electrons. The advance in QD technology combines graphene (a conductive single atomic layer of carbon atoms) and...
Nanocarbon Shows Promise for Fluorescent Bioimaging
NAGOYA, Japan, Feb. 22, 2018 — An international team from Nagoya University and Boston College has developed a flexible, water-soluble warped nanographene molecule that is biocompatible. The molecule was also found to induce cell death when exposed to light. The new molecule...
Thin 2D Materials Pack a Heavy Punch
Oct 17, 2017 — Two-dimensional materials such as graphene, as well as composite materials such as the layered semiconductor germanium selenium, could have a big impact on myriad applications. Composite materials that act as a single-photon emitter may be valuable...
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...
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...
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