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    Building Blocks of the Future for Photovoltaics

    August 19, 2022, Categories  Physics

    Artistic representation showing the twisted layers of tungsten diselenide (top) and molybdenum disulphide (bottom). Following excitation using light, a multitude of optically “dark” excitons form between the layers. These “dark” excitons are electron-hole pairs bound by Coulomb interaction (light and dark spheres connected by field lines), which cannot be directly observed using visible light. One of the most interesting quasiparticles is the “moiré interlayer exciton” – shown in the middle of the image – in which the hole is located in one layer and the electron in the other...
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    Seeing Universe’s Most Massive Known Star

    August 19, 2022, Categories  Astronomy/Space

    This comparison image shows the exceptional sharpness and clarity of the Zorro imager on the 8.1-meter Gemini South telescope in Chile (left) when compared to an earlier image taken with the NASA/ESA Hubble Space Telescope (right). The new Gemini South image allowed astronomers to clearly distinguish the star R136a1 from its nearby stellar companions, providing the data needed to reveal that – while still the most massive star known in the Universe – it is less massive than previously thought. 

    Credit: International Gemini Observatory/NOIRLab/NSF/AURA
    Acknowledgment: Image processing: T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab), M. Zamani (NSF’s NOIRLab) & D. de Martin (NSF’s NOIRLab); NASA/ESA Hubble Space Telescope 

    Groundbreaking observation from Gemini Observ...

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    New Research Model illuminates How Organs Communicate with each other

    August 18, 2022, Categories  Health/Medical, Biology/Biotechnology

    A novel mouse model for mapping protein communication between organs. Proteins are labeled by biotin and their movement in the body can be tracked. Credit: Scripps Research and University of Southern California

    Researchers uncover the proteins involved in key communication networks, which could help us better understand conditions like cancer and obesity. Our many different organ systems are in constant communication with each other. During exercise, for example, muscles send out signals to fat and liver tissue to release their energy sources. While these communication networks play a critical role in our bodies every day, it has been historically difficult to uncover such pathways...

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    The new moisture-driven electricity generation device invented by NUS researchers capitalises on the difference in moisture content of the wet and dry regions of the carbon-coated fabric to create an electric current. Sea salt is used as a moisture absorbent for the wet region.

    Researchers have developed a new moisture-driven electricity generation device made of a thin layer of fabric, sea salt, carbon ink, and a special water-absorbing gel. The device works by keeping one end of the fabric dry, while the other end is perpetually wet. The difference in moisture content of the wet and dry regions of the carbon-coated fabric creates an electric current...

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