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Scientists have found a way to make carbon both very hard and very stretchy by heating it under high pressure. This "compressed glassy carbon", developed by researchers in China and the US, is also lightweight and could potentially be made in very large quantities. This means it might be a good fit for several sorts of applications, from bulletproof vests to new kinds of electronic devices.
...When the researchers squeezed several sheets of graphene together at high temperatures, they found certain carbon atoms were exactly in the right position to form sp³ bonds between the layers.
Guinness World Records has named the graphene aerogel as "the least dense 3-D printed structure." The 3-D printed graphene aerogel weighs 0.5 milligrams per cubic centimeter. The researchers developed the material in February 2016 and have received the official recognition from GUINNESS WORLD RECORDS. Their achievement will be featured in the Guinness World Records 2018 Edition.
Now MIT engineers have fabricated a functional dialysis membrane from a sheet of graphene.... The graphene membrane, about the size of a fingernail [1 cm square], is less than 1 nanometer thick. (The thinnest existing membranes are about 20 nanometers thick.) The team's membrane is able to filter out nanometer-sized molecules from aqueous solutions up to 10 times faster than state-of-the-art membranes, with the graphene itself being up to 100 times faster.
“One of the graphene’s special features is that the electrons move much faster than in most semiconductors used today. Thanks to this we can access the high frequencies (100-1000 times higher than gigahertz) that constitutes the terahertz range. Data communication then has the potential of becoming up to ten times faster and can transmit much larger amounts of data than is currently possible”, says Andrei Vorobiev
In a new study published in Materials Today Energy, the researchers have shown that they can use CO2 and solar thermal energy to produce high yields of millimeter-length carbon nanotube (CNT) wool at a cost of just $660 per ton. The market value of long CNTs like these—which can be woven into textiles to make metals, cement replacements, and other materials—is currently $100,000-$400,000 per ton.
"We have introduced a new class of materials called 'Carbon Nanotube Wool,' which are the first CNTs that can be directly woven into a cloth, as they are of macroscopic length and are cheap to produce," Licht told Phys.org. "The sole reactant to produce the CNT wools is the greenhouse gas carbon dioxide."
[Researchers] reported the synthesis of a large sheet of monolayer single-crystal graphene. This result allows a leap forward in graphene production to an optimized method of fabricating an almost-perfect (> 99.9 % aligned) 5 × 50 cm2 single-crystal graphene in just 20 minutes. Moreover, the low production costs, comparable to commercially available lower-quality polycrystalline graphene films, could expand its usability.
Although previous reports have addressed some of the above challenges, this study overcame all [four] of them and made the synthesis of meter-sized single-crystal graphene possible. The degree of the misaligned graphene islands is less than 0.1 percent, amounting to negligible defects and grain boundaries in the products.
The electrolytic film produced at Rice and tested at Houston is a three-layer structure of nickel, grapheme and a compound of iron, manganese and phosphorus. The foamy nickel gives the film a large surface, the conductive graphene protects the nickel from degrading and the metal phosphide carries out the reaction.
The robust material is the subject of a paper in Nano Energy.
First Graphite has received approval from the WA [Western Australia] Department of Environment Regulation for the construction of a graphene production facility at the Australian Marine Complex at Henderson near Perth. This will be operational in the fourth quarter of this year. First Graphite said it will be the first ASX-listed company to have a commercial graphene production capability.
The facility will cost less than $1 million and will be funded from existing cash. Initial capacity will be 20 to 25 tonnes per annum of saleable grapheme.
First Graphite produces high quality graphene from high grade Sri Lankan vein graphite.
The development of two product lines are the focus of the First Graphite and University of Adelaide work with ARC Graphene Research Hub - graphene paints for fire resistive coatings for wall papers, fibres, wood fences and building cladding; and fire resistive engineered wood such as particle-board, chip board and gyprock.