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    Category Technology/Electronics

    Quantum Dots can Spit out Clone-like Photons

    February 23, 2019, Categories  Physics, Technology/Electronics

    Scanning Transmission Electron Microscope image (STEM) of single perovskite quantum dots. New study shows that single perovskite quantum dots could be a fundamental building block for quantum-photonic technologies for computing or communications.
    Credit: Image courtesy of the authors

    Researchers have produced coherent single photon emitters, a key component for future quantum computers and communications systems. The study, which involves using a family of materials known as perovskites to make light-emitting particles called quantum dots, appears today in the journal Science. The paper is by MIT graduate student in chemistry Hendrik Utzat, professor of chemistry Moungi Bawendi, and nine others at MIT and at ETH in Zurich, Switzerland.

    The ability to produce individual photons with...

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    Dose of Vitamin C helps Gold Nanowires Grow

    February 22, 2019, Categories  Physics, Technology/Electronics, Chemistry/Nanotechnology

    Gold nanowires grown in the Rice University lab of chemist Eugene Zubarev promise to provide tunable plasmonic properties for optical and electronic applications. The wires can be controllably grown from nanorods, or reduced.
    Credit: Zubarev Research Group/Rice University

    Scientists discover a method to turn stubby gold nanorods into gold nanowires of impressive length. The metal wires could be valuable for sensing, diagnostic, imaging and therapeutic applications. A boost of vitamin C helped Rice University scientists turn small gold nanorods into fine gold nanowires.

    Common, mild ascorbic acid is the not-so-secret sauce that helped the Rice lab of chemist Eugene Zubarev grow pure batches of nanowires from stumpy nanorods without the drawbacks of previous techniques.

    “There’s n...

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    Breakthrough in the Search for Graphene-based Electronics

    February 20, 2019, Categories  Physics, Technology/Electronics, Chemistry/Nanotechnology

    Danish researchers just solved one of the biggest challenges of making effective nano electronics based on graphene: to carve out graphene to nanoscale dimensions without ruining the electrical properties. This allows them to achieve electrical currents orders of magnitude higher than previously achieved for such structures. The work shows that the quantum transport properties needed for future electronics can survive scaling down to 10 nanometer dimensions.
    Credit: Otto Moesgaard

    A team of researchers from Denmark has solved one of the biggest challenges in making effective nanoelectronics based on graphene. For 15 years, scientists have tried to exploit the “miracle material” graphene to produce nanoscale electronics...

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    Gearing up for 5G: A Miniature, Low-Cost Transceiver for Fast, Reliable Communications

    February 20, 2019, Categories  Physics, Technology/Electronics

    Image of the new transceiver designed for 5G

    Image of the new transceiver designed for 5G
    The transceiver consists of a total of four horizontal (H1–4) and four vertical (V1–4) array orientations.

    Researchers at Tokyo Institute of Technology (Tokyo Tech) have designed a 28 GHz transceiver that integrates beamforming with dual-polarized multiple-input and multiple-output, MIMO technology. Measuring just 3 mm by 4 mm, this tiny transceiver could help improve performances of fifth-generation cellular network (5G) and Internet of Things (IoT) devices.

    A team of researchers led by Kenichi Okada at Tokyo Tech’s Department of Electrical and Electronic Engineering has devised a strategy with a clear eye on supporting high-speed mobile data access using the millimeter-wave spectrum for 5G, the highly-anticipated wireless network o...

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