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Researchers achieve atomically-precise graphene origami

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NGA Graphene Academic Council member Vanderbilt University researchers, in collaboration with University of Maryland and Chinese Academy of Sciences (CAS) achieve atomically-precise graphene origami.

Past studies by various research groups around the world were able to demonstrate origami-like folding of graphite with a scanning probe, but could not command where or how the folds would occur. Now, by replacing the graphite with high-quality graphene nanoislands, researchers in China and the US have leveraged the atomic-level control of STM into an origami nanofabrication tool with an impressive level of precision.

“Similar to conventional paper origami, our current work has made it possible to create new complex nanostructures by custom-design folding of atomic layer materials,” says Hong-Jun Gao, a researcher at the Chinese Academy of Sciences (CAS) who led this latest work. Alongside Shixuan Du and collaborators at CAS, as well as Vanderbilt University and the University of Maryland in the U.S, Gao reports how they can fold single layers of graphene with the direction of the fold specified over a range from around the magic angle at 1.1° (where observations of correlated electron behavior have been causing such a stir) to 60°, with a precision of 0.1°. Their STM manipulations also leave tubular structures at the edges that have one-dimensional structure electron characteristics similar to carbon nanotubes.

“We have demonstrated that through such simple graphene origami we can realize various graphene structures like carbon nanotubes and their intramolecular junctions, which we can generally learn about only from text books,” he adds. They list superconductors, Weyl semimetals, and ferromagnetic materials among the fields they expect to benefit from the unprecedented precision of their graphene origami nanofabrication technique. Read the full article here.

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies.

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Grolltex graphene secures investment for increasing capacity at US production facility

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Grolltex graphene secures investment by closing oversubscribed private placement financing round.

Grolltex, for ‘graphene-rolling-technologies’, the largest commercial producer of single layer,
‘electronics grade’ graphene and graphene sensing materials in the U.S., announces that it has closed a non-brokered, oversubscribed private placement financing, in the form of a convertible note, with local area private investors. The gross proceeds of the private placement will be used for general working capital purposes and for increasing the capacity and quality testing capabilities of the company’s production facility in San Diego, California.

The company is focused on delivering inexpensive and enabling solutions to advanced nano-device and graphene sensor makers by fabricating the highest quality single layer graphene attainable, via chemical vapor deposition (or ‘CVD’). The company is now capable of producing monolayer graphene sensors on large area plastic sheets at a cost of pennies per unit, in a high throughput and sustainable way. Further, Grolltex is helping customers that currently produce their graphene sensors on silicon wafers, to transition that production capacity to making their sensors on large area sheets of biodegradable plastic instead, at a >100X cost savings.

Monolayer graphene films are today seen as the most promising futuristic sensing materials for their
combination of surface to volume ratio (the film is only one atom thick) and conductivity (the most
conductive substance known at room temperature). Markets that are commercializing advanced
sensors made of graphene include DNA sensing and editing, new drug discovery and wearable bio-
monitors for glucose sensing and autonomous blood pressure monitoring via patches or watch-like
wearable bracelet devices.

No securities were issued and no cash was paid as bonuses, finders’ fees, compensation or commissions in connection with the private placement.

About Grolltex:
Grolltex, Inc., is a nanotechnology materials, products and equipment company focusing on the
optimization and advancement of the key monolayer material ‘graphene’ and related 2D materials. The company holds a number of strategic patents and technological advantages in areas relating to the manufacture of high quality, monolayer ‘CVD’ graphene and hexagonal Boron Nitride as well as on several advanced products made of graphene and 2D materials, such as hyper efficient solar cells, next generation sensors, advanced fuel cells and futuristic super-thin and flexible sensors for use in
wearables, smart phones and other electronics.

Grolltex is a practitioner of, and specializes in, exclusively sustainable graphene production methods and is committed to advancing the field of graphene to improve the future of leading-edge materials science and product design through the optimization of single atom thick materials.

For complete information
Media Contact:
Attn: Media Relations, Grolltex, Inc.
10085 Scripps Ranch Court, Suite D
San Diego, CA 92131
858-368-9065
support@grolltex.com

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. Join NGA here.

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AGM Space application adhesives launched

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Very low density, high thermal conductivity AGM Space application adhesives launched.

Following four years of development work AGM are now offering materials engineers, in the Space and Defence sectors, two unique thermally conductive epoxy paste adhesive systems, AGM TP300 and AGM TP400

These novel epoxy adhesive systems exhibit high levels of thermal conductivity (between 3 and 6 W/mK), combined with excellent mechanical, adhesive and outgassing performance. Most significantly these properties are achieved with cured resin densities as low as 40% that ofcompetitive conductive adhesives on the market. AGM’s TP 300/400 products are therefore highlyversatile, while providing end users with significant savings in both mass and cost.

Already being adopted within the industry, AGM’s TP 300/400 systems are ideal for use where thermal management is critical in structural bonding or gap filling, across a range of satellite and general space applications.

TP300/400 adhesives are supplied in 2 pack resin and hardener systems. They are supported by an extended performance database, available on short lead-times and supplied in convenient kit sizes to suit customer requirements.

For further information please contact AGM Sales Office on Tel: + 44(0)1642 438214
or Email: info@appliedgraphenematerials.com

About Applied Graphene Materials

Applied Graphene Materials works in partnership with its customers using its knowledge and expertise to provide custom graphene dispersions and formats to deliver enhancements and benefits for a wide range of applications. The Group’s strategy is to target commercial application in three core markets: coatings, composites and polymers and functional fluids.

The Group has developed proprietary bottom-up processes which are capable of producing high volume graphene nanoplatelets using a continuous process. The manufacturing processes are based on sustainable, readily available raw materials and therefore do not rely on the supply of graphite, unlike a number of other graphene production techniques. Applied Graphene Materials owns the intellectual property and know-how behind these processes.

Applied Graphene Materials was founded by Professor Karl Coleman in 2010 with its operations and processes based on technology that he initially developed at Durham University. The Group was admitted to AIM in November 2013.

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. Join NGA here.

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Graphene Light project funded to produce prototype devices

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In May 2017 graphene-info.com reported the the Institute of Low Temperature and Structure Research, located in Wroclaw, Poland, developed a new efficient white light source that uses graphene foam excited by a continuous-wave laser. We have seen a demonstration of the technology at IDTechEx 2019 (see video below).

Graphene-info.com recently spoke with Professor Krzysztof Piech who updated the project’s process. Prof. Piech said that the research team received a grant of around $130,000 to develop the technology, and they are expecting to soon receive a $270,000 grant that will enable the production of a series of prototypes. We hope to update once these prototypes can be demonstrated.

The Graphene Light uses a laser that is directed to a graphene foam. The laser opens up a bandgap which results in light emission that ranges from 360nm (UV) or 405nm (visible) to 980nm-1064nm (near-infrared). The researchers say that the light spectrum of this device is similar to the spectrum of the sun.

 

Source: Graphene-info.com

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. Join NGA here.

 

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NGA Regional Graphene Conference Features Governor Bryant

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Convening in Mississippi’s state capital this coming November, the NGA’s first regional graphene conference features Governor Bryant, “Mississippi’s steward for business” as keynote speaker. Known for strategically targeting legislation and workforce development, Governor Phil Bryant has continued the 80-year schedule in development of the state’s manufacturing industry. He also serves on the National Graphene Association Advisory Board. The Graphene Innovation and Research Conference promises to bring together stakeholders who are able to collaborate on graphene-focused technologies which are sure to have significant economic impact in the Southeastern region of the United States, as well as nationally.

Because of Bryant’s firm belief in the value of education, the governor has led Mississippi in implementing transformational public education reforms, promoting economic development and building a competitive business climate that attracts major employers. Mississippi manufacturing companies have partnered with local colleges to implement curriculums specifically for their industries.

It is a natural fit to also convene the first meeting of the newly formed NGA Academic Council at the  conference in Jackson. Led by the University of Mississippi Center for Graphene Research and Innovation, representatives from the eight member universities of the Academic Council will explore collaboration venues in the area of graphene science, engineering and technology education, as well as research and commercialization.

According to Investing News, the graphene industry reached a market value of $200 million (USD) in 2018, representing a significant 84.8 percent growth in just one calendar year thanks to graphene’s use in many industries, including automotive, mining, and textiles. The focus on industrial development combined with Bryant’s emphasis on the importance of education in preparation for manufacturing during his tenure has enabled the state to possess an ideal climate for rapid growth of graphene-based industry.

Dr. Ed Meek, founder and president of the National Graphene Association, has a vision for Mississippi to be “The Graphene State.” It is already the most affordable state to live in the U.S., due to housing cost, health care and utilities cost all falling well below the national average, according to The Balance Small Business. Potential economic impact of the graphene industry in the state and region provides an exciting atmosphere to kick off this first in a series of regional conferences across the nation.

 

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. Join NGA here.

 

Sources:  Manufactured in Mississippi, HEADWAE, The Balances Small Business, Investing News, Mississippi Public Universities, University of Mississippi

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Graphene advances high-speed supercomputers

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Until now, copper has the base material of interconnects, but researchers have seen that graphene advances high-speed supercomputers as technology expands. In November 2018, researchers from the University of California, Santa Barbara presented a paper on CMOS-compatible graphene interconnects. Following this work, a team of University of California Santa Barbara (UCSB) engineering researchers recently came out with a method to utilize nanometer-scale doped multilayer graphene (DMG) interconnects well suited to the mass-production of integrated circuits.

For more than 20 years interconnects have been manufactured using copper as the base material, yet, the limitations of this metal when shrinking it to the nanoscale resistivity increase, which poses a “fundamental threat to the $500 billion semiconductor industry,” say researchers at UCSB. Graphene holds the potential to resolve this issue as a global desire for smarter, faster, lighter and affordable technology and devices continues to expand.

“As you reduce the dimensions of copper wires, their resistivity shoots up,” states Kaustav Banerjee, a professor in the Department of Electrical and Computer Engineering. Resistivity is a material property that is not supposed to change, but at the nanoscale, all properties change.

The UCSB team now believes it has found a promising method to use graphene for interconnects. However, it is not a case of simply replacing copper with graphene in the manufacturing process as research is still being carried out. Therefore, transposing the material from the university or other facility testing environments to high-volume production and wide-spread usage is yet another obstacle that must be overcome.

Professor Banerjee states that the only way the semiconductor industry will move forwards is when, “you find a way to synthesize graphene directly onto silicon wafers.” Issues arise back-end synthesizing after the transistors are fabricated – you face a thermal budget that can’t exceed a temperature of about 500 degrees Celsius. Read full article here.

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. Join NGA here.

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Textiles feature laser printed washable graphene supercapacitor

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Scientists from RMIT University in Melbourne, Australia, have developed a cost-efficient and scaleable method for rapidly fabricating textiles that are embedded with energy storage devices. The team reports that in just three minutes, the method can produce a 10x10cm smart textile patch that’s waterproof, stretchable and readily integrated with energy technologies like graphene supercapacitors, laser printed directly onto the textiles.

As a proof-of-concept, the researchers connected the supercapacitor with a solar cell, delivering an efficient, washable and self-powering smart fabric that overcomes the key drawbacks of existing e-textile energy storage technologies.

Dr. Litty Thekkakara, a researcher in RMIT’s School of Science, said smart textiles with built-in sensing, wireless communication or health monitoring technology called for robust and reliable energy solutions. “Current approaches to smart textile energy storage, like stitching batteries into garments or using e-fibres, can be cumbersome and heavy, and can also have capacity issues,” Thekkakara said.

“These electronic components can also suffer short-circuits and mechanical failure when they come into contact with sweat or with moisture from the environment… Our graphene-based supercapacitor is not only fully washable, it can store the energy needed to power an intelligent garment – and it can be made in minutes at large scale”.

The research analyzed the performance of the proof-of-concept smart textile across a range of mechanical, temperature and washability tests and found it remained stable and efficient. Read full article here.

Graphene Composite Design Competition

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. Join NGA here.

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Chemical-free mosquito bite prevention: Graphene oxide

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A new study by Brown University shows that graphene sheets can block the signals mosquitoes use to identify a potential blood ‘donor’, which may enable a new chemical-free approach to mosquito bite prevention.

The researchers showed that multilayer graphene can provide a two-fold defense against mosquito bites. The ultra-thin yet strong material acts as a barrier that mosquitoes are unable to bite through. At the same time, experiments showed that graphene also blocks chemical signals mosquitoes use to sense that a blood meal is near, blunting their urge to bite in the first place. The findings suggest that clothing with a graphene lining could be an effective mosquito barrier, the researchers say.

“Mosquitoes are important vectors for disease all over the world, and there’s a lot of interest in non-chemical mosquito bite protection,” said Robert Hurt, a professor in Brown’s School of Engineering and senior author of the paper. “We had been working on fabrics that incorporate graphene as a barrier against toxic chemicals, and we started thinking about what else the approach might be good for. We thought maybe graphene could provide mosquito bite protection as well.”

To find out if it would work, the researchers recruited some brave participants willing to get a few mosquito bites in the name of science. The participants placed their arms in a mosquito-filled enclosure so that only a small patch of their skin was available to the mosquitoes for biting. The mosquitoes were bred in the lab so they could be confirmed to be disease-free.

The researchers compared the number of bites participants received on their bare skin, on skin covered in cheesecloth and on skin covered by a graphene oxide (GO) films sheathed in cheesecloth. Read full article here.

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. For membership information, click here.

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Prototype Graphene Safety Boots Manufactured by First Graphene and Steel Blue

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Prototype graphene safety boots made with PureGRAPH10, have been manufactured by First Graphene and Steel Blue.

The boots were reportedly made last week at Steel Blue’s Malaga WA factory and incorporated PureGRAPH into the safety capped boot TPU soles and polyurethane foam innersole.

Full boots and the sole samples will be exposed to extensive laboratory tests which are expected by the Companies to exceed current industry standards for safety footwear. Following laboratory testing it is anticipated extensive field trials will be conducted, for approximately six months.

While existing TPUs already possess high abrasion resistance and tensile strength it is anticipated the incorporation of PureGRAPH will improve mechanical properties while providing additional benefits in thermal heat transfer, chemical resistance and reduced permeability. Read the full story here.

 

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. For Membership information, click here. 

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Ultra-pure hBN graphene substrate created free on one of the world’s largest hydraulic presses

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Ultra-pure hBN graphene substrate is created with one of the world’s most powerful hydraulic presses by Japanese scientists Takashi Taniguchi and Kenji Watanabe. The two Japanese scientists supply hundreds of laboratories with a prized gem — and are now among the world’s most published researchers.

The smell of acrid metal fills the air as Takashi Taniguchi reaches into the core of one of the world’s most powerful hydraulic presses. This seven-metre-tall machine can squeeze carbon into diamonds — but they aren’t on its menu today. Instead, Taniguchi and his colleague Kenji Watanabe are using it to grow some of the most desired gems in the world of physics.

For the past eight days, two steel anvils have been crushing a powdery mix of compounds inside the press at temperatures of more than 1,500 °C and up to 40,000 times atmospheric pressure. Now, Taniguchi has opened the machine and cooling water is dribbling from its innards. He plucks out the dripping prize, a 7-centimetre-wide cylinder, and starts chipping at its outer layers with a knife to get rid of the waste metal that had helped to regulate the pressures and temperatures. “The last steps are like cooking,” he says, focusing intently on his tools. Eventually, he reveals a molybdenum capsule not much bigger than a thimble. He puts it in a vice and grasps it with a wrench the size of his forearm. With one twist, the capsule fractures and releases a burst of excess powder into the air. Still embedded inside the capsule are glimmering, clear, millimetre-sized crystals known as hexagonal boron nitride (hBN).

Materials laboratories all over the world want what Taniguchi and Watanabe are making here at the Extreme Technology Laboratory, a building on the leafy campus of the National Institute of Materials Science (NIMS) in Tsukuba, outside Tokyo. For the past decade, the Japanese pair have been the world’s premier creators and suppliers of ultra-pure hBN, which they post to hundreds of research groups at no charge.

They’ve sacrificed much of their own research and almost all their press’s running time to this task. But in doing so, they have accelerated one of the most exciting research fields in materials science: the study of electronic behaviour in 2D materials such as graphene, single-atom-thick sheets of carbon. These systems are thrilling physicists with fundamental insights into some of the quantum world’s most exotic electronic effects, and might one day lead to applications in quantum computing and superconductivity — electricity conducted without resistance. Read full article here.

About the National Graphene Association (NGA)

The National Graphene Association is the main organization and body in the U.S. advocating and promoting the commercialization of graphene. NGA is focused on addressing critical issues such as policy and standards development that will result in effective integration of graphene and graphene-based materials globally. NGA brings together current and future graphene stakeholders — entrepreneurs, companies, researchers, developers and suppliers, investors, venture capitalists, and government agencies — to drive innovation, and to promote and facilitate the commercialization of graphene products and technologies. Join NGA here.

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