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Graphene is the world's strongest, thinnest and most conductive material, made from carbon. Graphene's remarkable properties enable exciting new applications. Our site brings you daily news and resources, all graphene focused.
Recent Graphene news:
This book includes expanded coverage of the preparation, purification, structural characterization, and common application areas of single- and multi-walled CNT structures. It compares, contrasts, and, where appropriate, unitizes CNT to graphene.
Researchers from from Zhejiang Normal University in China developed a biocompatible bio-sensor that can simultaneous detection multiple biomarkers, such as DNA and proteins. Those sensors are made from carbon materials - mainly graphene-oxide (GO) and graphene quantum dots (GQDs).
The researchers explain hat GQDs rae promising environmentally friendly and biocompatible nanomaterials that can be used to design new fluorescence detection platforms in vitro and in vivo. The researchers use the specifically designed fluorescence on-off-on process that takes advantage of the intense and dual-color fluorescence of the GQDs, in addition to the efficient quenching effect of GO. The high emission efficiency of GQDs guarantees the high sensitivity of the constructed biosensors, while the good biocompatibility is promising for use of biosensors in vivo.
US researchers and Aixtron engineers grew high-quality 300 mm graphene on copper-coated silicon wafers
Researchers from the University of Texas at Austin, in collaboration with Aixtron developed a new method to grow high-quality wafer-scale (300 mm) graphene sheets. This process may enable the integration of graphene with Silicon CMOS and pave the way towards graphene-based electronics.
The method is based on CVD growth on polycrystalline copper film coated silicon substrates. They report that their graphene has better charge carrier transport characteristics compared to previously synthesized poly- or single-crystalline wafers. The graphene has few defects and covers over 96% of the 300-mm wafer substrate.
Researchers from India developed a new superparamagnetic hybrid material made from graphene and the amaranthus dubius plant. This plant is used for food (it's high on protein and contains several vitamins and minerals). Superparamagnetic materials can be used to make very sensitive and accurate sensors.
This new material is biologically inert (as both graphene and the plant are inert) and so this may be useful for applications in biology (such as bio-sensors).
Researchers from the UK's University of Southampton developed a new process to synthesize large-area molybdenum di-sulphide (MoS2), a 2D material similar to graphene in many of its properties. Up until now most MoS2 production results in tiny flakes.
The researchers used atmospheric pressure chemical vapor deposition (APCVD) to fabricate large area (>1000 mm2) ultra- thin films only a few atoms thick. The researchers are collaborating in this research together with several UK companies and universities, MIT and Singapore's Nanyang Technological University.
This book reviews the preparation and properties of graphene. It starts by exploring the different ways to produce graphene (epitaxial growth on silicon carbide, CVD, exfoliation, etc.). The second part focuses on the TEM, STM and Raman spectroscopy characterization of graphene, and the final part discusses electronic transport properties of graphene and graphene devices.
Researchers from Korea's Hanyang University developed new hybrid graphene-CNT fiber that is at least 12 times stronger compared to a general Kevlar fibers used in current bulletproof jackets. The new fiber is also more flexible.
To produce the new fibers, the researchers started out by dispersing graphene in water, which were then dispersed in a polymer solution using wet spinning to obtain a fiber form. The polymer was later removed, which created pure graphene fibers, which were later mixed with carbon-nanotubes fibers.