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    Nanostructures enable On-Chip Lightwave-Electronic Frequency Mixer

    September 6, 2024, Categories  Physics, Technology/Electronics

    Illustration of a computer chip, with waves of different colors and frequencies appearing above, below, and across it
    The demonstration of a lightwave-electronic mixer at petahertz-scale frquencies is a first step toward making communication technology faster and progresses research toward developing new, miniaturized lightwave electronic circuitry capable of handling optical signals directly at the nanoscale.
    Credits:Image: Sampson Wilcox/Research Laboratory of Electronics

    Imagine how a phone call works: Your voice is converted into electronic signals, shifted up to higher frequencies, transmitted over long distances, and then shifted back down so it can be heard clearly on the other end. The process enabling this shifting of signal frequencies is called frequency mixing, and it is essential for communication technologies like radio and Wi-Fi...

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    Distorted Galaxy Forming Cosmic Question Mark

    September 5, 2024, Categories  Astronomy/Space

    The galaxy cluster MACS-J0417.5-1154 is so massive it is warping the fabric of space-time and distorting the appearance of galaxies behind it, an effect known as gravitational lensing. This natural phenomenon magnifies distant galaxies and can also make them appear in an image multiple times, as NASA’s James Webb Space Telescope saw here. Two distant, interacting galaxies — a face-on spiral and a dusty red galaxy seen from the side — appear multiple times, tracing a familiar shape across the sky. Active star formation, and the face-on galaxy’s remarkably intact spiral shape, indicate that these galaxies’ interaction is just beginning.
    NASA, ESA, CSA, STScI, V. Estrada-Carpenter (Saint Mary’s University).

    It’s 7 billion years ago, and the universe’s heyday of star formation is ...

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    Newly discovered Antibody Protects Against All COVID-19 Variants

    September 5, 2024, Categories  Health/Medical, Biology/Biotechnology

    Newly discovered antibody protects against all COVID-19 variants
    Graphical abstract. Credit: Cell Reports Medicine (2024). DOI: 10.1016/j.xcrm.2024.101668

    Researchers have discovered an antibody able to neutralize all known variants of SARS-CoV-2, the virus that causes COVID-19, as well as distantly related SARS-like coronaviruses that infect other animals.

    As part of a new study on hybrid immunity to the virus, the large, multi-institution research team led by The University of Texas at Austin discovered and isolated a broadly neutralizing plasma antibody, called SC27, from a single patient...

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    Finger Wrap uses Sweat to provide Health Monitoring at your Fingertips

    September 5, 2024, Categories  Health/Medical, Biology/Biotechnology

    This finger wrap is powered by the wearer’s fingertip sweat—and also monitors levels of glucose, lactate, vitamin C and levodopa in that same sweat. Credit: Shichao Ding

    A sweat-powered wearable has the potential to make continuous, personalized health monitoring as effortless as wearing a Band-Aid. Engineers at the University of California San Diego have developed an electronic finger wrap that monitors vital chemical levels—such as glucose, vitamins, and even drugs—present in the same fingertip sweat from which it derives its energy.

    The advance was published Sept. 3 in Nature Electronics by the research group of Joseph Wang, a professor in the Aiiso Yufeng Li Family Department of Chemical and Nano Engineering at UC San Diego.

    The device, which wraps snugly around the fin...

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