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physorg - latest science and technology news stories
  • Researchers fabricate 3-D silicon structures with a focused infrared laser
    Physicist Richard Feynman once gave a lecture titled "There is plenty of room at the bottom." This lecture is often quoted to highlight the successes of modern micro- and nano-fabrication techniques, and the value of available space that comes with advances in miniaturization. In this respect, silicon, the bedrock of modern computers, mobile communications, and photonic devices, has proven to be extremely capable. These advances are usually described in terms of Moore's law. However, modern processors are essentially stacks of planar structures. In this sense, silicon microelectronics and photonics are still 2-D.
  • Good vibrations for the future of computing
    Vibrating mechanical switches that can be cascaded to perform complex computational operations could take computing significantly further than today's technologies. KAUST researchers have demonstrated an alternative technology based on mechanical vibrations.
  • Small scale energy harvesters show large scale impact
    The production of nano-scale devices has drastically increased with the rise in technological applications, yet a major drawback to the functionality of nano-sized systems is the need for an equally small energy resource.
  • Intelligent flow sensor for demand-controlled ventilation
    VTT Technical Research Centre of Finland and Fläkt Woods Oy have developed a flow sensor that enables ventilation to adapt to actual demand, thereby improving indoor air quality and energy efficiency. The flow control utilises a flow sensor, based on ultrasound, which is ideal for use in challenging hospital conditions and schools, for example.
  • New CubeSat propulsion system uses water as propellant
    A new type of micropropulsion system for miniature satellites called CubeSats uses an innovative design of tiny nozzles that release precise bursts of water vapor to maneuver the spacecraft.
  • Scientists develop super-strong metal for next tech frontier
    The technological future of everything from cars and jet engines to oil rigs, along with the gadgets, appliances and public utilities comprising the internet of things, will depend on microscopic sensors.
  • Intrinsic properties—the secret lives of accelerometers
    When different laboratories test the same accelerometer, such as the one in your smartphone, they often come up with very different values. There are several possible reasons: Perhaps the axes of the gimbal system used in testing are not perfectly aligned, or the internal axes of the device under test (DUT) itself are misligned, or maybe the DUT is mounted on the test table incorrectly. To remove these problems, NIST scientists are taking measurements to determine the DUT's 'intrinsic' properties—those that are unique to the device itself. This video demonstration includes footage of the high-precision gimbal table used to rotate the DUT (in this case, a smartphone) on all three axes simultaneously.
  • New infrared-emitting device could allow energy harvesting from waste heat
    A new reconfigurable device that emits patterns of thermal infrared light in a fully controllable manner could one day make it possible to collect waste heat at infrared wavelengths and turn it into usable energy.


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