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    Category Physics

    Engineers put Tens of Thousands of Artificial Brain Synapses on a Single chip

    June 10, 2020, Categories  Physics, Technology/Electronics, Health/Medical, Biology/Biotechnology

    The new chip (top left) is patterned with tens of thousands of artificial synapses, or “memristors,” made with a silver-copper alloy. When each memristor is stimulated with a specific voltage corresponding to a pixel and shade in a gray-scale image (in this case, a Captain America shield), the new chip reproduced the same crisp image, more reliably than chips fabricated with memristors of different materials.
    Image courtesy of the researchers

    The design could advance the development of small, portable AI devices. MIT engineers have designed a “brain-on-a-chip,” smaller than a piece of confetti, that is made from tens of thousands of artificial brain synapses known as memristors — silicon-based components that mimic the information-transmitting synapses in the human brain.

    The res...

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    Transparent Graphene Electrodes might lead to New Generation of Solar Cells

    June 9, 2020, Categories  Physics, Technology/Electronics, Chemistry/Nanotechnology

    A new manufacturing process for graphene is based on using an intermediate carrier layer of material after the graphene is laid down through a vapor deposition process. The carrier allows the ultrathin graphene sheet, less than a nanometer (billionth of a meter) thick, to be easily lifted off from a substrate, allowing for rapid roll-to-roll manufacturing. These figures show this process for making graphene sheets, along with a photo of the proof-of-concept device used (b).
    Courtesy of the researchers

    Engineers have synthesized a tiny structure with high surface area and discovered how its unique architecture drives ions across interfaces to transport energy or information...

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    Scientists Apply Revolutionary 30 Year-Old Principle and Find Black Holes Could Be Like Holograms

    June 8, 2020, Categories  Physics, Astronomy/Space

    What researchers have done is apply the theory of the holographic principle to black holes. In this way, their mysterious thermodynamic properties have become more understandable: focusing on predicting that these bodies have a great entropy and observing them in terms of quantum mechanics, you can describe them just like a hologram: they have two dimensions, in which gravity disappears, but they reproduce an object in three dimensions.

    According to new research, black holes could be like a hologram, where all the information is amassed in a 2D surface able to reproduce a 3D image.

    We can all picture that incredible image of a black hole that traveled around the world about a year ago...

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    A System for the Nonreciprocal Transmission of Microwave Acoustic Waves

    June 7, 2020, Categories  Physics, Technology/Electronics

    Rendered image of the device developed by the researchers. Credit: Shao et al.

    Acoustic waves have been found to be highly versatile and promising carriers of information between chip-based electronic devices. This characteristic is ideal for the development of a number of electronic components, including microwave filters and transducers.

    In the past, some researchers have tried to build devices in which waves are transmitted between two ports in a non-symmetric way. These are known as nonreciprocal devices. These devices could be particularly promising for the manipulation and routing of phonons, quasiparticles associated with acoustic waves...

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