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Nanotechnology Spotlights

Nanoparticles accelerate and improve healing of burn wounds

bandaidsSkin thermal burns are a complex and major source of morbidity, mortality and healthcare expenditure. Given the range of causes, from fire associated injury to water scalding, patients often present with multiple and complex burns - wounds that often worsen and expand over the first few days do to the associated underlying inflammation and injury. To facilitate better wound healing, researchers have developed nanoparticles...

Posted: Jul 28, 2015

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Suppressing flicker noise in graphene boron nitride heterostructure field-effect transistors

graphene_HFETThe noise level in devices with graphene and other two-dimensional (2D) materials has to be reduced in order to enable their practical applications. It will not be possible to build graphene-based communication systems or detectors until the noise spectral density is decreased to the level comparable with the conventional state-of-the-art transistors.Researchers have now demonstrated that the electronic noise in graphene devices...

Posted: Jul 27, 2015

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Nanotechnology and energy - a path to a sustainable future

green_energyAgainst the double-whammy backdrop of an energy challenge and a climate challenge it is the role of innovative energy technologies to provide socially acceptable solutions through energy savings; efficiency gains; and decarbonization. Nanotechnology It may not be the silver bullet, but nanomaterials and nanoscale applications will have an important role to play. This article provides an overview of the issues and nanomaterials...

Posted: Jul 23, 2015

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Fabricating patterned graphene from a solid source of polystyrene

patterned_grapheneSince the first 'Scotch tape' method - i.e. mechanical peeling - of making graphene was reported in 2004, researchers have come up with a variety of techniques for producing graphene. Since simply using the as-produced graphene flakes is not good enough for use in sophisticated applications, intricate patterning processes are essential for the development of the required graphene structures for use in nanoelectronic and optical...

Posted: Jul 21, 2015

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Carbon-negative CO2 conversion using renewable energy

co2Putting some of the rising amounts of carbon dioxide in the atmosphere to good use again, researchers are looking for ways to convert atmospheric CO2 emissions into industrially relevant, valuable chemicals and fuels; ideally powered by clean, renewable energy sources to make the whole process carbon-negative or at least carbon-neutral, i.e. by using at least - if not more - CO2 than is created in the process. New work demonstrates...

Posted: Jul 20, 2015

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Innovative substrate engineering for high quality 2D nanomaterials

graphene_layerResearchers have demonstrated a novel, low-cost substrate processing procedure to achieve rapid, efficient synthesis of millimeter-sized single crystal graphene. One of the greatest challenges in commercializing graphene is how to produce high quality material, on an industrial scale, at low cost, and in a reproducible manner. The quality of graphene plays a crucial role as the presence of defects, impurities, domain boundaries,...

Posted: Jul 15, 2015

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An optical sensor platform based on nanopaper

nanopaperAmong others, a significant area for nanopaper applications are sensors. Paper-based sensors promise to be simple, portable, disposable, low power-consuming, and inexpensive sensor devices that will find ubiquitous use in medicine, detecting explosives, toxic substances, and environmental studies. New work describes various nanopaper-based nanocomposites that exhibit plasmonic or photoluminescent properties that can be modulated...

Posted: Jul 14, 2015

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Towards self-powered electronic papers

nanopaperAn international research team has designed and demonstrated novel self-powered human-interactive transparent nanopaper systems, utilizing transparent nanopaper as base material. This nanopaper system is based on an electrostatic induction mechanism and a dielectric material. That makes them self-powered, i.e. able to operate without the need for external power. The basic working mechanisms of the resulting devices are electrostatic...

Posted: Jul 13, 2015

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