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Graphene at Fifteen

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Ruquan Ye and Dr. James M. Tour assess progress on graphene at fifteen years, showing significant research advances since the isolation of few-layer graphene by mechanical exfoliation in 2004.

Since the isolation of few-layer graphene (FLG) by mechanical exfoliation in 2004, there have been significant advances in graphene research, ranging from fundamental science to applied technologies. The ability to prepare high-quality single-layer graphene (SLG) and FLG has enabled successive discoveries that capitalize on the fascinating properties of graphene. In the early years of research, SLG was demonstrated to have high mechanical strength, with a Young’s modulus of 1 TPa, high electron mobility at 2.5 × 105 cm2 V−1s−1, high optical transparency at 97.4% transmittance at 550 nm, high chemical stability, and a high thermal conductivity of 3000 W mK−1.

More recently, additional breakthroughs have been achieved by manipulating the graphene structure, such as band gap opening of layered graphene, quantum tunneling by vertical heterogeneous stacking, and the superconductivity of twisted bilayer graphene. With all these merits arising from one material, graphene demonstrates potential advantages over many existing market products, and it has been suggested as the leader of the next generation of revolutionary materials technologies. For example, FLG has a transparency and sheet resistance comparable to that of indium tin oxide (ITO), a widely used material in electronics. Yet, graphene’s superior mechanical flexibility makes it more suitable than ITO for flexible electronics applications.

Research on graphene continues to expand, and the topics have extended from the synthesis and applications of graphene to the exotic properties of its derivatives. A majority of past research was at the laboratory scale, and concerns exist regarding the feasibility of commercializing graphene. For industrial applications, graphene manufacturing must be scalable while addressing the trade-offs between quality and the cost of the graphene product. Further, the feasibility of using graphene to replace existing products and whether graphene can meet product performance specifications while overcoming price pressure from competing materials must be evaluated. So far, graphene products have shown advantages in several fields ranging from aerospace to supporting equipment.

With the goal of promoting and lobbying for the commercialization of graphene, the National Graphene Institute in Europe and the National Graphene Association in the United States have been established. The commercialization of graphene calls on the standardization of different grades, the development of technologies pertaining to the cost-effective production of those grades of graphene, and the assessment of risks to the environment and health. Access 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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Catch-22 in graphene based molecular devices resolved

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Catch-22 in graphene based molecular devices resolved. The conductivity of Graphene has made it a target for many researchers seeking to exploit it to create molecular scale devices and now a research team jointly led by University of Warwick and EMPA have found a way past a frustrating catch 22 issue of stability and reproducibility that meant that graphene based junctions were either mechanically stable or electrically stable but not both at the same time.

Graphene and graphene like molecules are attractive choice as an electronic component in molecular devices but up till now it has proven very challenging to use them in large scale production of molecular devices that will work and be robust at room temperatures. In a joint effort research teams from the University of Warwick, EMPA and Lancaster and Bern Universities have reached both electrical and mechanical stability in graphene based junctions million times smaller than diameter of human hair. They have today published their findings in a paper entitled “Robust graphene-based molecular devices” in the journal Nature Nanotechnology.

Simple mechanically stable structures such as graphene-like molecules are easy to produce by chemical synthesis but at this very small scale these are subject to a range of limits when they placed in a junction to form an electronic device such as variations in molecule electrode interface. The researchers overcome these limits by separating the requirements for mechanical and electronic stability at the molecular level. 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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Graphene-based retinal implants to restore vision awarded million euro “la Caixa” Health Research Grant

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Graphene-based retinal implants projects led by Luis Serrano (CRG), Eduard Batlle (IRB Barcelona), Pau Gorostiza (IBEC), Raúl Méndez (IRB Barcelona) and José Antonio del Río (IBEC) have been awarded with “la Caixa” Health Research Grants and four researchers from ICFO (2), IFAE and IRB Barcelona received postdoctoral grants.

The project Adaptive Retinal Implant Technology for Vision Restoration (i-VISION), led by the Catalan Institute of Nanoscience and Nanotechnology (ICN2), a BIST centre, has been awarded a “la Caixa” Health Research Grant. The work is the follow-up of the BIST Ignite THEIA project, in which the ICN2, IFAE, ICFO and Barraquer Ophthalmological Center began their research into this new generation of retinal prostheses. THEIA was awarded funding through two successive BIST Ignite grants, in 2016 and in 2017.

BIST centres IFAE and ICFO, along with the Barraquer Foundation and the Institut de la Vision(University of Sorbonne) are the partner institutions forming the newly named i-VISION research consortium led by the BIST centre ICN2. The three-year project will design the next generation of retinal prostheses using graphene-based electrodes to provide artificial vision to patients blinded by retinal degeneration.

This year’s “la Caixa” Health Research Grants are the second edition of a call aimed at fostering biomedical and health research projects with high social impact. The grants consist of 1 million euros for research consortia, as is the case with i-VISION, and half a million for individual institutions. A total of 22 projects have been selected out of 632 proposals, covering areas such as oncology, infectious diseases and neuroscience. The grantees have three years to turn their projects into meaningful results. Read 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. Join NGA here.

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Mississippi Positioned to Lead Wonder Material Graphene’s Future

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Mississippi In Position To Lead Wonder Material Graphene’s Future

Organization Chooses Jackson, Mississippi for Conference

For photos and graphics accompanying this release, go to this link:

https://drive.google.com/drive/folders/1mSyaXgTjiEwqNjH5QCNmSQcgRB1tYIaI?usp

 

Oxford, Miss., September 16, 2019 – Following the momentum from the American Graphene Summit on Capitol Hill in D.C. keynoted by Senator Roger Wicker (R-MS) earlier this year, Mississippi’s business and industry will now get an up-close look at the global graphene technology revolution in their home state.

The Graphene Innovation & Research Conference, previously held in Nashville and Austin, will convene in Jackson, Mississippi, on November 19-20, at the Westin Hotel. The conference, titled “Mississippi The State Of Graphene,” will include speakers from around the globe. Leading scientists, scholars and industry leaders will share the most recent research, innovation, and trends in the field of graphene. Special tracks will highlight opportunities for different industry segments.

Sponsors and partners include the Mississippi Development Authority (MDA), The University of Mississippi and the National Graphene Association (NGA), with the support of the Mississippi Manufacturing Association (MMA) and the Mississippi Economic Council (MEC), the Conference will acquaint and prepare Mississippi businesses and industries with the coming technology revolution envisioned by the National Graphene Association (NGA) and partners to promote “Mississippi The State of Graphene.”  Sponsors also include Ergon, Inc., Huntington Ingalls Industries, Innovate Mississippi, CREATE Foundation and TLC Graphene Composites, LLC.

Graphene is the thinnest known material and is 200 times stronger than steel. Scientists call it a disruptive technology that is a “game changer.” While the advanced material is only scratching the surface of its potential to enhance existing products and inspire new ones, it has already made an impact in many industries ranging from sporting goods to aerospace. Examples of current uses are: cell phone batteries that fully charge in 30 minutes; the finest of membranes to turn salt water into drinking water; adding to paint for ships to reduce corrosion and increase fuel efficiency; adding to concrete to make it twice as strong and adding to asphalt to make roads last twice as long. (For more stories on ways graphene is changing the game, visit the GRAPHENE NEWS section of the NGA website.)

To encourage engagement and innovative thinking, the NGA has also launched a Graphene Composites Design Competition as part of the event. The application can be found HERE. Finalists will have the opportunity to pitch their ideas for new or enhanced products using graphene at the conference.

“Mississippi business and industry should be prepared for the enormous opportunities graphene will offer. The NGA is working with state leaders to locate a significant national graphene presence in Mississippi,” said Dr. Ed Meek of Oxford, NGA Founder and CEO.

“This conference is the continuation of NGA initiatives to support the needs of current and future graphene stakeholders,” said Dr. Zina Jarrahi Cinker, NGA, executive director. “Senator Wicker is committed to Mississippi maintaining a leadership role in graphene development. This event focuses on graphene research, innovation, and its impact on regional and national economic development.”

Anyone can attend. Attendees will include from business and industry leaders, company R&D personnel, entrepreneurs, scientists, university and government officials. To learn more or to register, click HERE.

“The Graphene Innovation and Research Conference is an information exchange between academic and government scientists and industry and is a critical step toward transitioning graphene-based technologies into products and tools that can benefit society,” said Josh Gladden, Vice Chancellor for Research and Sponsored Programs at the University of Mississippi and NGA Academic Council chair. “The University of Mississippi and the Center for Graphene Research and Innovation are thrilled to participate and support this inaugural conference in our home state.”

More information on the efforts of NGA and its members can be accessed via www.natonalgrapheneassociation.com

For an excellent summary about all things graphene, download the NGA’s publication  “GRAPHENE GATEWAY”

View Senator Roger Wicker himself speaking about the wonders of graphene at the American Graphene Summit.  https://www.youtube.com/watch?v=pmNNIGLgKN8&feature=youtu.be

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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.

 

Media Contacts:

For questions and to request interviews with key individuals, please contact:

Debbie Nelson, debbie@nationalgrapheneassociation.com(813) 774-0768

Torkel Bjarneman, torkel@nationalgrapheneassociation.com  (615) 669-9941

 

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Graphene enabled health monitors are flexible and transparent

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Graphene enabled health monitors are flexible and transparent. New technological devices are prioritizing non-invasive tracking of vital signs not only for fitness monitoring, but also for the prevention of common health problems such as heart failure, hypertension, and stress related complications, among others. Wearables based on optical detection mechanisms are proving an invaluable approach for reporting on our bodies inner workings and have experienced a large penetration into the consumer market in recent years.
Current wearable technologies, based on non-flexible components, do not deliver the desired accuracy and can only monitor a limited number of vital signs. To tackle this problem, conformable non-invasive optical-based sensors that can measure a broader set of vital signs are at the top of the end-users’ wish list.
In a recent study published in Science Advances (“Flexible graphene photodetectors for wearable fitness monitoring”), ICFO researchers have demonstrated a new class of flexible and transparent wearable devices that are conformable to the skin and can provide continuous and accurate measurements of multiple human vital signs. These devices can measure heart rate, respiration rate and blood pulse oxygenation, as well as exposure to UV radiation from the sun.
While the device measures the different parameters, the read-out is visualized and stored on a mobile phone interface connected to the wearable via Bluetooth. In addition, the device can operate battery-free since it is charged wirelessly through the phone.
“It was very important for us to demonstrate the wide range of potential applications for our advanced light sensing technology through the creation of various prototypes, including the flexible and transparent bracelet, the health patch integrated on a mobile phone and the UV monitoring patch for sun exposure. They have shown to be versatile and efficient due to these unique features”, reports Dr. Emre Ozan Polat, first author of this publication.

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.

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Time-Saving Peeling Graphene Sheets Simulation

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Time-Saving Peeling Graphene Sheets Simulation.

Control of atomic-scale friction and adhesion is critical for effective manipulation of the motion of nano- or micro-meter scale objects at interfaces. For example, in nanotechnology controlling adhesion during the peeling process of graphene sheets plays a very important role in manipulation and fabrication.

Graphene is a promising material due to its mechanical, electronic, magnetic, spintronic, and optical properties. In previous work, a comparison between simulation and experiment of peeling graphene has revealed its unique frictional and adhesive properties.

However, computation time becomes longer as the size of graphene increases, so a direct comparison of the simulated vertical force curve with experiments is difficult. Furthermore, it is also difficult to separate pure effects related to adhesion from those due to friction during the peeling process.

Here, Ryoji Okamoto, Koki Yamasaki, and Naruo Sasaki at The University of Electro-Communications have developed a time-saving potential model to simulate the adhesive characteristics during the peeling process of armchair-type graphene sheets from frictionless graphite substrate surfaces.

Using its structural symmetry, the armchair-type graphene sheet was reduced to the effective spring model [Fig. (a)]. Then the edge of the spring model was lifted along the vertical direction. For each lifting position, the model was structurally optimized using the conjugate gradient method.

Read 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.

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Graphene impacts space telescopes

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Graphene impacts space telescopes with the discovery of its use in THz heterodyne detection.

Researchers from Chalmers University of Technology have demonstrated a graphene-based detector with the potential to revolutionize the sensors used in next-generation space telescopes. Beyond superconductors, there are few materials that can meet the requirements for making ultra-sensitive and fast terahertz (THz) detectors for astronomy. Chalmers researchers have shown that engineered graphene adds a new material paradigm for THz heterodyne detection.

“Graphene might be the only known material that remains an excellent conductor of electricity/heat even when having, effectively, no electrons. We have reached a near zero-electron scenario in graphene, also called Dirac point, by assembling electron-accepting molecules on its surface. Our results show that graphene is an exceptionally good material for THz heterodyne detection when doped to the Dirac point,” says Samuel Lara-Avila, assistant professor at the Quantum Device Physics Laboratory and lead author of the paper.

In detail, the experimental demonstration involves heterodyne detection, in which two signals are combined, or mixed, using graphene. One signal is a high intensity wave at a known THz frequency, generated by a local source (i.e. a local oscillator). The second is a faint THz signal that mimics the waves coming from space. Graphene mixes these signals and then produces an output wave at a much lower gigahertz (GHz) frequency, called the intermediate frequency, that can be analyzed with standard low noise gigahertz electronics. The higher the intermediate frequency can be, the higher bandwidth the detector is said to have, required to accurately identify motions inside the celestial objects. Read 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.

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Graphene infused resins development and sales agreement by Innovative Aspects, LLC and Ressinea, LLC

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Graphene infused resins development and sales agreement entered into by National Graphene Association Corporate Partner Ressinea, LLC and Innovative Aspects, LLC.

HOUSTON, TEXAS, September 10, 2019 – Innovative Aspects LLC (IA) is a company focused on the application and sale of enabling technology for graphene enhanced materials and products. The Company is pleased to announce that Ressinea LLC has formally agreed to enter into a joint development agreement with IA for the development and sale of graphene infused resins. This agreement has resulted from the preliminary but highly successful work, jointly undertaken, to develop a range of graphene enhanced resins.

The agreement provides Ressinea with the exclusive worldwide rights to market, distribute and sell a range of its resins enhanced with IA’s formulated graphene. The agreement will allow Ressinea to purchase IA’s graphene enhanced masterbatches for use in the fields of composites and adhesives. IA has also agreed to work exclusively with Ressinea to further develop graphene enhanced resins with specific targeted performance characteristics

Over the past six months, IA and Ressinea have been jointly working on the development of graphene enhanced resin formulations with significant performance enhancements in terms of improved fracture toughness and thermal conductivity. After further development work to optimize both product performance and manufacturing processes, Ressinea’s resins enhanced with IA’s graphene technology will be evaluated by targeted customers looking to benefit from the fracture toughness or thermal conductivity property improvements.

Tracey Marquart, IA CEO, stated: “We made the decision to invest time and money into the development of epoxy resins for Ressinea. Preliminary results were beyond expectations and the research into the graphene infusion process has been instrumental into future formulizations, ensuring consistent quality and a unique product line which is growing exponentially. The breakthroughs we have experienced are very significant in ensuring consistent quality and differentiating us from competitors. We believe Ressinea is now able to sell proven resins infused the graphene which will be the first such products in the world.”

Chris Clark, CEO of Ressinea added: “We have made great progress over the past six months in the development of graphene enhanced resins with major enhancements in the qualities for which the specific resin was designed. The ability to radically improve the baseline properties of resins and adhesives with the infusion of graphene has now been proven through testing. We are now in the position of offer graphene infused resin to manufacturers and end-users with the assurance that our products will improve performance. Our joint development relationship has produced resins that are totally unique in the industry. We look forward to a long and mutually prosperous relationship with IA as we continue to formulate new resins.”
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For more information, please contact Tracey Marquart at 832-666-3143, or email Tracey@iacoatings.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.

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NGA Industry Council member Directa Plus announces new textile graphene membrane

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New Textile Membrane Patent Granted for Polyurethane Film Containing G+ Graphene Nanoplatelets

Directa Plus (AIM: DCTA), a leading producer and supplier of graphene nanoplatelets based products for use in consumer and industrial markets, is pleased to announce the development of a new, innovative membrane based on a polyurethane film containing the Company’s G+ graphene nanoplatelets.  The new membrane, to be marketed under the Grafytherm™ and Grafyshield™ provides water protection as well as breathability together with G+ performance: thermal and electrical conductivity, infrared absorption and bacteriostaticity (the capacity to inhibit the growth or reproduction of bacteria).  The film has been granted an Italian patent and is in the process of being extended internationally.

The membrane will be initially targeted at the apparel market where the Company’s existing G+ products already deliver increased levels of thermal comfort to wearers based on body heat homogenisation and heat retention.  Future developments of Grafytherm™ and Grafyshield™ are expected to include smart textile and electronic applications, such as electrical heating and data transmission to provide new functionalities in the furniture upholstery and automotive segments.

The new membrane has been developed by Directa Plus and the Company’s membrane partner, Novaresin.  

Commenting, Giulio Cesareo, Founder and CEO of Directa Plus, said: “The new membrane builds on the recognised benefits we are already delivering to apparel markets with our sustainably produced G+ graphene products and opens the door to the large global supply chains in automotive and upholstery.  The grant of patent protection means we can start marketing the exciting potential applications opened up by the film to forward-thinking manufacturers in Italy and globally.” 

For further information please visit http://www.directa-plus.com/ or contact:

Directa Plus plc +39 02 36714458
Giulio Cesareo, CEO
Marco Ferrari, CFO
Cantor Fitzgerald Europe (Nominated Adviser and Joint Broker) +44 20 7894 7000
Rick Thompson, Philip Davies Will Goode (Corporate Finance)
Caspar Shand Kydd (Sales)
N+1 Singer (Joint Broker) +44 20 7496 3069
Mark Taylor, Lauren Kettle
Tavistock (Financial PR and IR) +44 20 7920 3150
Simon Hudson, Barnaby Hayward, Edward Lee

About Directa Plus

Our focus is on sectors where we have established strong commercial advantage through developing and launching products with a technological lead: Environmental, based on our Grafysorber® product for treating oil contaminated water; Textiles (based on our G+ products and technology); Composites (including our asphalt additive in Ecopave; and, Elastomers (including retread tyres). All our products are hypoallergenic, non-toxic and sustainably produced.

 

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Graphene and data analytics company Imagine Intelligent Materials creates large surface area sensors

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Australia-based graphene and data analytics company, Imagine Intelligent Materials, has developed an integrated sensing solution that uses graphene coatings and edge-based signal processing devices to collect data from objects with large surface areas.

Proven over areas as large as 4,000 square meters, the system gathers data such as pressure, moisture, stress and temperature and is aimed at industrial and consumer applications in the IoT market.

Imagine’s executive chairman, Chris Gilbey said: “Imagine leverages the amazing electrical conductivity of graphene made in our Geelong factory and signals processing algorithms developed in our Finnish operation… (It delivers) a low-cost sensing solution for an entire surface that will scale easily and efficiently.”

The new technology is a development of the company’s first product, imgneX3 graphene coating used to detect leakages across the geotextiles that line minesite tailings dams. Read 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.

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