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    A 3D-printed Vaccine Patch offers vaccination without a shot

    September 28, 2021, Categories  Health/Medical, Biology/Biotechnology

    While microneedle patches have been studied for decades, the work by Carolina and Stanford overcomes some past challenges: through 3D printing, the microneedles can be easily customized to develop various vaccine patches for flu, measles, hepatitis or COVID-19 vaccines.

    Researchers develop microneedle vaccine patch that outperforms needle jab to boost immunity. Scientists at Stanford University and the University of North Carolina at Chapel Hill have created a 3D-printed vaccine patch that provides greater protection than a typical vaccine shot.

    The trick is applying the vaccine patch directly to the skin, which is full of immune cells that vaccines target.

    The resulting immune response from the vaccine patch was 10X greater than vaccine delivered into an arm muscle with a needle...

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    Ultrathin Quantum Dot LED that can be Folded Freely as Paper

    September 28, 2021, Categories  Physics, Technology/Electronics

    The ultra-thin QLED can be sharply folded along the laser-etched line, just like the origami paper artwork. A three-dimensional foldable QLED with various user-customized shapes such as airplanes, butterflies, and pyramids was fabricated. The 3D foldable QLED can freely transform between 2D and 3D structures, which allows for a dynamic display of visual information.
    Fabrication of 3D foldable QLEDs that can be folded freely as paper
    The ultra-thin QLED can be sharply folded along the laser-etched line, just like the origami paper artwork. A three-dimensional foldable QLED with various user-customized shapes such as airplanes, butterflies, and pyramids was fabricated. The 3D foldable QLED can freely transform between 2D and 3D structures, which allows for a dynamic display of visual information.

    The new device can be folded into complex 3D structures such as butterflies, airplanes, and pyramids...

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    Earth and Venus grew up as Rambunctious Planets

    September 28, 2021, Categories  Astronomy/Space

    Simulated aftermath of a hit-and-run collisions between the young Earth and another planetary body
    The moon is thought to be the aftermath of a giant impact. According to a new theory, there were two giant impacts in a row, separated by about 1 million years, involving a Mars-sized ‘Theia’ and proto-Earth. In this image, the proposed hit-and-run collision is simulated in 3D, shown about an hour after impact. A cut-away view shows the iron cores. Theia (or most of it) barely escapes, so a follow-on collision is likely.A. Emsenhuber/University of Bern/University of Munich

    Using machine learning and simulations of giant impacts, researchers found that the planets residing in the inner solar system were likely born from repeated hit-and-run collisions, challenging conventional models of planet formation.

    Planet formation — the process by which neat, round, distinct planets form from ...

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    Hubble finds Early, Massive Galaxies Running on Empty

    September 25, 2021, Categories  Astronomy/Space

    These images are composites from NASA’s Hubble Space Telescope and the Atacama Large Millimeter/submillimeter Array (ALMA). The boxed and pullout images show two of the six, distant, massive galaxies where scientists found star formation has ceased due to the depletion of a fuel source – cold hydrogen gas. Hubble, together with ALMA, found these odd galaxies when they combined forces with the “natural lens” in space created by foreground massive galaxy clusters. The clusters’ gravity stretches and amplifies the light of the background galaxies in an effect called gravitational lensing. This phenomenon allows astronomers to use massive galaxy clusters as natural magnifying glasses to study details in the distant galaxies that would otherwise be impossible to see...
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