Current Graphene News and Events

Current Graphene News and Events, Graphene News Articles.
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Creating higher energy density lithium-ion batteries for renewable energy applications
Lithium-ion batteries that function as high-performance power sources for renewable applications, such as electric vehicles and consumer electronics, require electrodes that deliver high energy density without compromising cell lifetimes. In the Journal of Vacuum Science and Technology A, researchers investigate the origins of degradation in high energy density LIB cathode materials and develop strategies for mitigating those degradation mechanisms and improving LIB performance. (2020-11-24)

Strain engineering of 2D semiconductor and graphene
Strain engineering can significantly manipulate the two-dimensional (2D) materials' electronic and optical properties, which endow it the potential applications in optoelectronics and nanophotonics. To summarize recent fascinating work about the strain engineering of 2D materials, scientists in China write a review article that gives people a comprehensive introduction to this field, including the strain field theory, tunable band structure and optical properties of 2D materials under strain field, and their photonic applications. (2020-11-23)

Direct visualization of quantum dots reveals shape of quantum wave function
Trapping and controlling electrons in bilayer graphene quantum dots yields a promising platform for quantum information technologies. Researchers at UC Santa Cruz have now achieved the first direct visualization of quantum dots in bilayer graphene, revealing the shape of the quantum wave function of the trapped electrons. (2020-11-23)

Staying ahead of the curve with 3D curved graphene
A team of researchers has amplified 3D graphene's electrical properties by controlling its curvature. (2020-11-20)

New insights into memristive devices by combining incipient ferroelectrics and graphene
Scientists are working to create neuromorphic computers, with a design based on the human brain. A crucial component is a memristive device, the resistance of which depends on the history of the device - just like the response of our neurons depends on previous input. Materials scientists from the University of Groningen analysed the behaviour of strontium titanium oxide, a platform material for memristor research and used the 2D material graphene to probe it. (2020-11-20)

A new understanding of ionic interactions with graphene and water
The findings from Northwestern University and Argonne National Laboratory researchers could inform design of environmental technologies behind water purification processes and electric energy storage. (2020-11-17)

No losses: Scientists stuff graphene with light
Physicists from MIPT and Vladimir State University, Russia, have achieved a nearly 90% efficiency converting light energy into surface waves on graphene. They relied on a laser-like energy conversion scheme and collective resonances. (2020-11-16)

Sensors get a laser shape up
Laser writing breathes life into high-performance sensing platforms. (2020-11-15)

Manchester group discover new family of quasiparticles in graphene-based materials
After years of dedicated research a group of pioneering scientists led by Nobel Laureate Andre Geim have again revealed a phenomenon that is 'radically different from textbook physics' and this work has led to the discovery and characterisation of a new family of quasiparticles found in graphene-based materials. Called Brown-Zak fermions these extraordinary particles have the potential to achieve the Holy Grail of 2D materials by having ultra-high frequency transistors which can in turn produce a new generation of superfast electronic devices. (2020-11-13)

Charges cascading along a molecular chain
A team of researchers led by Berkeley Lab has developed a method to fabricate a one-dimensional array of individual molecules and to precisely control its electronic structure. (2020-11-12)

Tips for making nanographene
Nanographene is a material that is anticipated to radically improve solar cells, fuel cells, LEDs and more. Typically the synthesis of this material has been imprecise and difficult to control. For the first time, researchers have discovered a simple way to gain precise control over the fabrication of nanographene. In doing so, they have shed light on the previously unclear chemical processes involved in nanographene production. (2020-11-11)

Graphene controls laser frequency combs in fiber
Tuning laser frequency combs electrically can enrich diversity of comb outputs and help to stabilize them actively. By using a graphene heterogeneous fiber microcavity, researchers recently achieve such electrically tunable laser microcombs in-situ. In this implementation, graphene heterostructure was utilized as saturable absorber, temperature controller and dynamic feedback receiver simultaneously. Hence, rich frequency combs with span over half an octave, repetition 10GHz~80GHz, and phase noise down to -130 dBc/Hz@10kHz are generated. (2020-11-11)

Improving high-energy lithium-ion batteries with carbon filler
Lithium-ion batteries are the major rechargeable power source for many portable devices as well as electric vehicles, but their use is limited, because they do not provide high power output while simultaneously allowing reversible energy storage. Research reported in Applied Physics Reviews aims to offer a solution by showing how the inclusion of conductive fillers improves battery performance. (2020-11-10)

3D print experts discover how to make tomorrow's technology using ink-jet printed graphene
The University of Nottingham has cracked the conundrum of how to use inks to 3D-print novel electronic devices with useful properties, such as an ability to convert light into electricity. (2020-11-04)

Light-modulated graphene-organic heterojunction transistors realizing photocurrent logic changes
The optical intermodulation and graphene removing doping modulation proposed in this paper provide a reference for the future fabrication of graphene-based all-optical input photodetectors and photoelectric modulation devices, as well as positive and negative logic photocurrents modulated by utilizing critical value of effective exciton length. This logical reversal light modulation photoresponse opens up a new path for the direction of photocurrent and polarity modulation in the future. (2020-11-01)

Graphene-based memory resistors show promise for brain-based computing
As progress in traditional computing slows, new forms of computing are coming to the forefront. At Penn State, a team of engineers is attempting to pioneer a type of computing that mimics the efficiency of the brain's neural networks while exploiting the brain's analog nature. (2020-10-29)

Chemical scissors snip 2D transition metal dichalcogenides into nanoribbon
One of the biggest challenges in making hydrogen production clean and cheap has been finding an alternative catalyst necessary for the chemical reaction that produces the gas, one that is much cheaper and abundant than the very expensive and rare platinum that is currently used. Researchers in Korea have now found a way to 'snip' into tiny nanoribbons a cheap and plentiful substance that fits the bill, boosting its catalytic efficiency to at least that of platinum. (2020-10-29)

Rice finds path to nanodiamond from graphene
Rice University researchers expand their theory on converting graphene into 2D diamond, or diamane. (2020-10-29)

Flash graphene rocks strategy for plastic waste
Rice University scientists advance their technique to make graphene from waste with a focus on plastic. (2020-10-29)

Reliable quality-control of graphene and other 2D materials is routinely possible
Scientists at Ames Laboratory have discovered and confirmed a method which could serve as an easy but reliable way to test the quality of graphene and other 2D materials. (2020-10-28)

On-surface synthesis of graphene nanoribbons could advance quantum devices
An international multi-institution team of scientists has synthesized graphene nanoribbons -- ultrathin strips of carbon atoms -- on a titanium dioxide surface using an atomically precise method that removes a barrier for custom-designed carbon nanostructures required for quantum information sciences. (2020-10-26)

Creating perfect edges in 2D-materials
Ultrathin materials such as graphene promise a revolution in nanoscience and technology. Researchers at Chalmers University of Technology, Sweden, have now made an important advance within the field. In a recent paper in Nature Communications they present a method for controlling the edges of two-dimensional materials using a 'magic' chemical. (2020-10-19)

When Fock meets Landau: Topology in atom-photon interactions
Topological photonics concerns the classical wave simulation of electronic band topology. Does the quantum nature of light embed new topological states? By exploiting the similarity between the Jaynes-Cummings model and graphene, topological states of quantized light were found with a wealth of physics involving the valley Hall effect, the Haldane model and the Lifshitz topological transition. This research built a bridge between quantum electrodynamics and topological phases in condensed matter physics. (2020-10-14)

Stacking and twisting graphene unlocks a rare form of magnetism
A team of researchers at Columbia University and the University of Washington has discovered that a variety of exotic electronic states, including a rare form of magnetism, can arise in a three-layer graphene structure. (2020-10-12)

The perfect angle for e-skin energy storage
Researchers at DGIST have found an inexpensive way to fabricate tiny energy storage devices that can effectively power flexible and wearable skin sensors along with other electronic devices, paving the way towards remote medical monitoring & diagnoses and wearable devices. Their findings were published in the journal Nano Energy. (2020-10-12)

Graphene microbubbles make perfect lenses
Jia and fellow researchers from Swinburne University of Technology recently teamed up with researchers from National University of Singapore, Rutgers University, University of Melbourne, and Monash University, to develop a method to generate precisely controlled graphene microbubbles on a glass surface using laser pulses. (2020-10-09)

Graphene detector reveals THz light's polarization
Physicists have created a broadband detector of terahertz radiation based on graphene. The device has potential for applications in communication and next-generation information transmission systems, security and medical equipment. (2020-10-08)

Next-gen smartphones to keep their cool
Multilayered carbon material could be the perfect fit for heat management in electronic devices. (2020-10-07)

Experiments with twisted 2D materials catch electrons behaving collectively
A team led by the University of Washington reports that carefully constructed stacks of graphene -- a 2D form of carbon -- can exhibit highly correlated electron properties. The team also found evidence that this type of collective behavior likely relates to the emergence of exotic magnetic states. (2020-10-06)

All-2D light-emitting field-effect transistors
All-2D light-emitting field-effect transistors. (2020-10-04)

Physicists build circuit that generates clean, limitless power from graphene
Physicists at the University of Arkansas have successfully generated an electrical current from the atomic motion of graphene, discovering a new source of clean, limitless power. (2020-10-02)

Ultrasensitive microwave detector developed
A joint international research team from POSTECH of South Korea, Raytheon BBN Technologies, Harvard University, and Massachusetts Institute of Technology in the U.S., Barcelona Institute of Science and Technology in Spain, and the National Institute for Materials Science in Japan have together developed ultrasensitive sensors that can detect microwaves with the highest theoretically possible sensitivity. (2020-10-01)

Tunable free-electron X-ray radiation from van der Waals materials
The suggested apparatus produces controlled radiation with a narrow spectrum that can be tuned with high resolution, at a relatively low energy investment. The findings are likely to lead to breakthroughs in a variety of fields, including the analysis of chemicals and biological materials, medical imaging, X-ray equipment for security screening, and other uses of accurate X-ray sources (2020-10-01)

Sensor with 100,000 times higher sensitivity could bolster thermal imaging
Army-funded research developed a new microwave radiation sensor with 100,000 times higher sensitivity than currently available commercial sensors. Researchers said better detection of microwave radiation will enable improved thermal imaging, electronic warfare, radio communications and radar. (2020-10-01)

Caltech researcher unveils sensor that rapidly detects COVID-19 infection
Wei Gao has redesigned technology he previously used to detect other health conditions so that it can be used to diagnose a COVID infection. (2020-10-01)

New detector breakthrough pushes boundaries of quantum computing
A new paper published in Nature shows potential for graphene bolometers to become a game-changer for quantum technology (2020-09-30)

The most sensitive and fastest graphene microwave bolometer
Scientists from Harvard, ICFO, MIT, Raytheon BBN Technologies and NIMS construct the fastest and most sensitive graphene-based microwave bolometer achieved so far. (2020-09-30)

A self-erasing chip for security and anti-counterfeit tech
Self-erasing chips developed at the University of Michigan could help stop counterfeit electronics or provide alerts if sensitive shipments are tampered with. (2020-09-24)

Metal wires of carbon complete toolbox for carbon-based computers
Carbon-based computers have the potential to be a lot faster and much more energy efficient than silicon-based computers, but 2D graphene and carbon nanotubes have proved challenging to turn into the elements needed to construct transistor circuits. Graphene nanoribbons can overcome these limitations, but to date scientists have been made only semiconductors and insulators, not the metallic wires to connect them. UC Berkeley scientists have now achieved the goal of a metallic graphene nanoribbon. (2020-09-24)

A fresh sense of possibility
A multisensory graphene-based skin can sense in extreme environments where other sensors cannot be used. (2020-09-22)

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