Using new nanofabrication techniques, MIT researchers made these samples of tungsten with billions of regularly spaced, uniform nanoscale holes on their surfaces. In their TVP system, this type of photonic crystal serves as a thermal emitter, absorbing heat and then—because of its surface structure—radiating to the PV diode only those wavelengths that the diode can …
1. ZME Science – Beautiful exoplanet aurorae 1000 times brighter than on Earth 2. Docmadhattan – Brian May, astrophysicist: a little review of research activity of Queen’s guitarist. In 1972 and 1973 two papers signed by Mr.May are be published: MgI Emission in the Night-Sky Spectrum and An Investigation of the Motion of Zodiacal Dust …
Arxiv – Antimagnets: Controlling magnetic fields with superconductor-metamaterial hybrids Magnetism is very important in science and technology, from magnetic recording to energy generation to trapping cold atoms. Physicists have managed to master magnetism – to create and manipulate magnetic fields- almost at will. Surprisingly, there is at least one property which until now has been …
A designer metamaterial has shown it can engineer emitted “blackbody” radiation with an efficiency beyond the natural limits imposed by the material’s temperature, a team of researchers report in Physical Review Letters. Illustration shows design of the infrared metamaterial absorber. (a) Top view of a single band metamaterial absorber unit cell. (b) Schematic of a …
Cold Fusion Now has an english translation of new cold fusion research by Piantelli. The name of Piantelli’s company is Nichenergy. The italian coverage on Piantelli is here * Older units worked continuously for months and produced 2× to 4× energy gain, but the actual energy balance was higher, as the cells reached self-sustaining mode. …
New Scientist – a team led by Andy Keane and Jim Scanlan of the University of Southampton, believes that 3D printing will soon allow uncrewed aircraft known as drones or UAVs to go from the drawing board to flight in a matter of days. No longer, they say, will one design of UAV be repeatedly …
Berkeley Lab researchers assembled alternating layers of graphene and tin to create a nanoscale composite. First a thin film of tin is deposited onto graphene. Next, another sheet of graphene is transferred on top of the tin film. This process is repeated and the composite material is then heated to transform a tin film into …
One of the square plastic films bearing nanometer-sized patterns being rolled out of the prototype roll-to-roll UV nanoimprinter – Roll-to-roll processing will allow such unique plastics to be manufactured on a large scale. Singapore’s Agency for Science, Technology and Research (A*STAR), is ready to put roll-to-roll nanoimprint manufacturing. This manufacturing process can easily and quickly …
Artificial cilia exhibit spontaneous beating In a recent paper published in the journal Science, Associate Professor of Physics Zvonimir Dogic and colleagues present the first example of a simple microscopic system that self-organizes to produce cilia-like beating patterns. The findings also open a door for the development of one of the major goals of nanotechnology …
A recent design for a nuclear reactor known as a traveling wave reactor looks similar to some conventional nuclear designs, but the way it operates is very different. Credit: Terrapower Technology Review – Terrapower, a startup funded in part by Nathan Myhrvold and Bill Gates, is moving closer to building a new type of nuclear …
The Center for Biological Diversity today notified the Environmental Protection Agency of its intent to file a lawsuit against the agency for its failure to take action to reduce black carbon, a potent global warming pollutant. Last year, the Center filed a formal petition asking the EPA to set water-quality criteria for black carbon, or …