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    Engineer Unveils new spin on Future of Transistors with Novel Design

    June 5, 2017, Categories  Physics, Chemistry/Nanotechnology

    All-carbon spin logic gate. Figure 1 Magnetoresistive GNR unzipped from carbon nanotube and controlled by two parallel CNTs on an insulating material above a metallic gate. As all voltages are held constant, all currents are unidirectional. The magnitudes and relative directions of the input CNT control currents ICTRL determine the magnetic fields B and GNR edge magnetization, and thus the magnitude of the output current IGNR.

    All-carbon spin logic gate.  Magnetoresistive GNR unzipped from carbon nanotube and controlled by two parallel CNTs on an insulating material above a metallic gate. As all voltages are held constant, all currents are unidirectional. The magnitudes and relative directions of the input CNT control currents ICTRL determine the magnetic fields B and GNR edge magnetization, and thus the magnitude of the output current IGNR.

    All-carbon spin logic gate. Magnetoresistive GNR unzipped from carbon nanotube and controlled by two parallel CNTs on an insulating material above a metallic gate. As all voltages are held constant, all currents are unidirectional. The magnitudes and relative directions of the input CNT control currents ICTRLdetermine the magnetic fields B and GNR edge magnetization, and ...

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    ‘Scrambled light’ Wavemeter Breakthrough

    June 5, 2017, Categories  Technology/Electronics, Physics

    Wavemeter setup: (a) Laser light is delivered into an integrating sphere (S) of diameter Dsphere, via an angled single mode fibre (SMF), where it undergoes numerous scattering events. A camera (C) located at a distance L from the integrating sphere observation port captures the speckle patterns. A wavemeter or Fabry–Perot interferometer (REF) is used to benchmark the speckle wavemeter. (b) An example of a speckle pattern captured by the camera at a wavelength of 780 nm with an image size of 512 × 512 pixels (with individual pixels of 4.5 × 4.5 μm2). The white scale bar denotes 200 pixels, and the colour bar shows the intensity in normalized units.

    Wavemeter setup: (a) Laser light is delivered into an integrating sphere (S) of diameter Dsphere, via an angled single mode fibre (SMF), where it undergoes numerous scattering events. A camera (C) located at a distance L from the integrating sphere observation port captures the speckle patterns. A wavemeter or Fabry–Perot interferometer (REF) is used to benchmark the speckle wavemeter. (b) An example of a speckle pattern captured by the camera at a wavelength of 780 nm with an image size of 512 × 512 pixels (with individual pixels of 4.5 × 4.5 μm2). The white scale bar denotes 200 pixels, and the colour bar shows the intensity in normalized units.

    A breakthrough innovation in the measurement of lasers can measure changes one millionth of the size of an atom and could revolutionize...

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    Extreme Exoplanet: Astronomers discover Alien World Hotter than most Stars

    June 5, 2017, Categories  Astronomy/Space

    1.Artist illustration of star KELT-9 and its ultrahot planet KELT-9b. (Robert Hurt / NASA/JPL-Caltech) 2. KELT North telescope in Arizona. (KELT Collaboration)

    1.Artist illustration of star KELT-9 and its ultrahot planet KELT-9b. (Robert Hurt / NASA/JPL-Caltech)
    2. KELT North telescope in Arizona. (KELT Collaboration)

    Imagine a planet like Jupiter zipping around its host star every day and a half, superheated to temperatures hotter than most stars and sporting a giant, glowing gas tail like a comet. That is what an international research team led by astronomers at Ohio State and Vanderbilt universities think they have found orbiting a massive star they have labeled KELT-9, located 650 light years from Earth in the constellation Cygnus. With a day-side temperature peaking at 4,600 Kelvin, the newly discovered exoplanet, KELT-9b, is hotter than most stars and only 1,200 Kelvin cooler than our own sun...

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    Study Estimates Amount of Water needed to carve Martian Valleys

    June 5, 2017, Categories  Astronomy/Space

    This is a depiction of Mars today and what a warm and wet ancient Mars might have looked like. Credit: Wei Luo, Northern Illinois University

    This is a depiction of Mars today and what a warm and wet ancient Mars might have looked like. Credit: Wei Luo, Northern Illinois University

    Findings suggest Mars had ocean, active hydrologic cycle. A new study led by Northern Illinois University geography professor Wei Luo calculates the amount of water needed to carve the ancient network of valleys on Mars and concludes the Red Planet’s surface was once much more watery than previously thought. The study bolsters the idea that Mars once had a warmer climate and active hydrologic cycle, with water evaporating from an ancient ocean, returning to the surface as rainfall and eroding the planet’s extensive network of valleys.

    Satellites orbiting Mars and rovers on its surface have provided scientists with convincing evidence that water helped...

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