Molten metal. Asegun Henry has a big idea for tackling climate change: Store up the sun. “This is the key, the linchpin that will set a lot of things in the right direction,” says the MIT mechanical engineering professor. Asegun Henry has a bold idea to save the world. He believes the key to reducing carbon emissions, and mitigating further climate change, lies in our ability to box up the sun. Today, much of the renewable energy that’s captured from the wind and sun is delivered in a use-it-or-lose-it capacity. To store such energy, Henry envisions a completely sustainable, zero-carbon grid with the potential to supply all our electrical needs, even on overcast and windless days. And he has a…

• www.china-kangda.com
• July 27, 2021
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This image shows a temporal focusing microscopy (TFM) image, left, and DEEP-TFM image, right, of a kidney imaged through a scattering medium. Shown in blue, green, and red channels are respectively nucleus, Alexa Fluor 488–conjugated WGA, and F-actin. Credit: Courtesy of the researchers Researchers could rapidly obtain high-resolution images of blood vessels and neurons within the brain. To create high-resolution, 3D images of tissues such as the brain, researchers often use two-photon microscopy, which involves aiming a high-intensity laser at the specimen to induce fluorescence excitation. However, scanning deep within the brain can be difficult because light scatters off of tissues as it goes deeper, making images blurry. Two-photon imaging is also time-consuming, as it usually requires scanning individual pixels…

• www.china-kangda.com
• July 27, 2021
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Snapshot of five-dimensional imaging with temporal-spatial-spectral resolutions. Credit: S. Zhang, East China Normal University Spectral-volumetric compressed ultrafast photography simultaneously captures 5D information in a single snapshot. Information-rich optical imaging can provide multidimensional information to enable observation and analysis of a detected target, contributing insights into mysterious and unknown worlds. With its ability to capture dynamic scenes on picosecond—and even femtosecond—timescales, ultrafast multidimensional optical imaging has important applications in the detection of the ultrafast phenomena in physics, chemistry, and biology. While pump-probe-based ultrafast imaging can acquire high-resolution multidimensional information, it cannot adequately capture unstable or irreversible transient scenes. Fortunately, compressed ultrafast photography (CUP), based on compressed sensing and streak imaging, surpasses traditional pump-probe-based ultrafast imaging. CUP has attracted broad attention due…

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• July 27, 2021
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