Although there are trillions of liters of water floating around in the air, it’s not easily accessible. Now engineers have developed a device powered by the Sun that can pluck practical quantities of drinkable water out of thin air, and they've successfully field-tested it in the Arizona desert.
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Most solar cells only capture the visible light. Now, researchers at Berkeley Labs have developed a way to use nanoparticles coated in special organic dyes to convert near-infrared light into visible light, which could allow solar cells to harvest more of the spectrum.
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Metals may seem tough, but given enough time even plain old air can be their undoing. An MIT team has found that aluminum can be protected from oxidation by a thin coating of aluminum oxide, which acts like a liquid, flowing to fill any gaps as they form.
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The glass we’re most familiar with is made from silicon dioxide, but now, an international team of scientists have developed a brand new class of glass, made from metal-organic compounds. These new materials form glass more readily than other types, and are much more pliable.
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Graphene hogs all the headlines about two-dimensional materials, but it might just be the beginning. Researchers have now isolated a 2D form of the soft metal gallium, dubbed "gallenene," which could make for efficient, thin metal contacts in electronic devices.
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Research from Johns Hopkins Bloomberg School of Public Health has found that a number of e-cigarette vapors contain unsafe levels of toxic metals, including lead and chromium. It is suspected that blame lies with e-cigarette heating coils that are contaminating the aerosols generated by the device.
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Rubber and metal are usually thought to sit at opposite ends of the stiffness spectrum, but a new composite material developed at Iowa State University could switch from the flexibility of the former to the stiffness of the latter after being bent, twisted or squeezed.
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Zapping hydrogen out of water through electrolysis is the cleanest way to produce the fuel, but that requires rare-Earth metal catalysts. Researchers have now developed a quick and inexpensive alternative, making a “nanofoam” catalyst out of nickel and iron that performs better than usual.
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Aluminum is nice and light, but that comes at the cost of strength. By introducing faults into the metal’s crystalline structure, researchers at Purdue University have now developed new aluminum alloys that are about as strong as stainless steel, and they could make for corrosion-resistant coatings.
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Metallic glass is an emerging type of material, so its secrets are still being discovered. While working with the stuff, a team of Yale researchers created a brand new type of metallic glass, by shrinking samples down to the nanoscale until it forms a unique crystalline phase.
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