Recent Comments

    Category Technology/Electronics

    Improving Light Absorption in Perovskite/Si Tandem Solar Cells

    October 25, 2022, Categories  Technology/Electronics, Physics

    1. (a) A schematic of the PDMS layer containing SGA phosphors and SiO2 nanoparticles, (b) photographs of the PDMS layer with SGA phosphors and SiO2 nanoparticles under ambient light and UV light (λ = 365 nm), (c) a schematic of perovskite/Si tandem solar cell with the PDMS layer containing SGA phosphors and SiO2 nanoparticles, and (d) a cross-sectional SEM image of the perovskite–Si solar cell.

    A research team, affiliated with UNIST has succeeded in achieving a power conversion efficiency (PEC) of 23.50% in a perovskite-silicon tandem solar cell built with a special textured anti-reflective coating (ARC) polymeric film. According to the research team, the PCE of the device with the ARC film was sustained for 120 hours, maintaining 91% of its initial value.

    This breakthrough has b...

    Read More

    New Computing Architecture: Deep Learning with Light

    October 21, 2022, Categories  Physics, Technology/Electronics

    Artist’s rendering of a smart transceiver. The dark blue device has golden pathways and rectangles, which represent the wires that connect the smart transceiver chip to a circuit board. A light blue square covered with thin lines rises from the middle, to represent the smart transceiver chip. The thin lines represent an array of fibers that move light from lasers in and out of the chip.
    Caption:This rendering shows a novel piece of hardware, called a smart transceiver, that uses technology known as silicon photonics to dramatically accelerate one of the most memory-intensive steps of running a machine-learning model. This can enable an edge device, like a smart home speaker, to perform computations with more than a hundred-fold improvement in energy efficiency.
    Credits:Image: Alex Sludds. Edited by MIT New

    A new method uses optics to accelerate machine-learning computations on smart speakers and other low-power connected devices. The technique may enable self-driving cars to make decisions in realtime while only using a fraction of the energy that is currently demanded by their power-hungry on-board computers.

    Ask a smart home device for the weather forecast, and it...

    Read More

    Blocking the buzz: MXene Composite could Eliminate Electromagnetic Interference by Absorbing it

    October 21, 2022, Categories  Physics, Technology/Electronics

    A MXene polymer composite being developed in Drexel’s College of Engineering could help to curtail the ever-increasing electromagnetic interference that comes with the proliferation of electronics devices.

    Drexel Materials science researchers demonstrate MXene polymer coating can block and absorb interference. A recent discovery by materials science researchers in Drexel University’s College of Engineering might one day prevent electronic devices and components from going haywire when they’re too close to one another. A special coating that they developed, using a type of two-dimensional material called MXene, has shown to be capable of absorbing and disbursing the electromagnetic fields that are the source of the problem.

    Buzzing, feedback or static are the noticeable manifestation...

    Read More

    Thinnest Ferroelectric Material Ever Paves the Way for New Energy-Efficient Devices

    October 20, 2022, Categories  Physics, Technology/Electronics

    A representation of a two-dimensional ferroelectric material. (Image by UC Berkeley/Suraj Cheema.)

    Distinguishing this intrigung material behavior at small scales could reduce energy demands for computing. As electronic devices become smaller and smaller, the materials that power them need to become thinner and thinner. Because of this, one of the key challenges scientists face in developing next-generation energy-efficient electronics is discovering materials that can maintain special electronic properties at an ultrathin size.

    Advanced materials known as ferroelectrics present a promising solution to help lower the power consumed by the ultrasmall electronic devices found in cellphones and computers...

    Read More