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    Materials Science Researchers develop First Electrically Injected Laser

    August 10, 2020, Categories  Physics, Technology/Electronics

    Schematic illustration of electrically injected germanium-tin laser and its power output versus current and spectrum characteristics.

    Materials science researchers, led by electrical engineering professor Shui-Qing “Fisher” Yu, have demonstrated the first electrically injected laser made with germanium tin. Used as a semiconducting material for circuits on electronic devices, the diode laser could improve micro-processing speed and efficiency at much lower costs.

    In tests, the laser operated in pulsed conditions up to 100 kelvins, or 279 degrees below zero Fahrenheit.
    “Our results are a major advance for group-IV-based lasers,” Yu said...

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    Pinpointing the Cells that keep the Body’s Master Circadian Clock Ticking

    August 8, 2020, Categories  Health/Medical, Biology/Biotechnology

    Noneuron
    The image shows a series of suprachiasmatic nucleus slices expressing click beetle green in AVP neurons and click beetle red in non-AVP neurons. As time progresses (spiraling into the image), the AVP (green) and non-AVP (red) neurons luminesce together rhythmically, thanks to the intact genetic clocks of the AVP neurons and exchange of neuronal signals. Digital manipulation of bioluminescence images. Artwork by John Abel and Alta Lewis Millard. Credit: Neuron

    A new mouse model helps researchers study the roles of cell types in keeping time inside the body. UT Southwestern scientists have developed a genetically engineered mouse and imaging system that lets them visualize fluctuations in the circadian clocks of cell types in mice...

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    Huge Ring-like Structure on Ganymede’s surface may have been caused by Violent Impact

    August 8, 2020, Categories  Astronomy/Space

    Credit: Tsunehiko Kato, 4D2U Project, NAOJ

    Researchers from Kobe University and the National Institute of Technology, Oshima College have conducted a detailed reanalysis of image data from Voyager 1, 2 and Galileo spacecraft in order to investigate the orientation and distribution of the ancient tectonic troughs found on Jupiter’s moon Ganymede. They discovered that these troughs are concentrically distributed across almost the entire surface of the satellite. This global distribution indicates that these troughs may be actually part of one giant crater covering Ganymede.

    Based on the results of a computer simulation conducted using the “PC Cluster” at the National Astronomical Observatory of Japan (NAOJ), it is speculated that this giant crater could have resulted from the impact o...

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    Spray-on Clear Coatings for Cheaper Smart Windows

    August 8, 2020, Categories  Physics, Technology/Electronics, Chemistry/Nanotechnology

    Square sample of clear coating, held by tweezers, on a green leafy background
    The ultra-thin clear coatings are made with a new spray-on method that is fast, cost-effective and scalable.

    New transparent spray-on coatings are conductive, cost-effective and rival the performance of current industry standards. A simple method for making clear coatings that can block heat and conduct electricity could radically cut the cost of energy-saving smart windows and heat-repelling glass.

    The spray-on coatings developed by researchers at RMIT University in Melbourne, Australia, are ultra-thin, cost-effective and rival the performance of current industry standards for transparent electrodes.

    Combining the best properties of glass and metals in a single component, a transparent electrode is a highly conductive clear coating that allows visible light through.

    The coati...

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