In every speaker is a membrane that physically vibrates to generate sound waves. But now, researchers have developed a speaker that doesn’t need to mechanically vibrate at all. Instead, a graphene membrane is heated and cooled with carefully controlled electric currents to create sound waves.
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A new phase of matter, called a time crystal, has been created for the first time. In a regular crystal, the atoms are arranged in a pattern that repeats in space, but in a time crystal, that pattern repeats through time. The creation of time crystals marks a new class of non-equilibrium phases.
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Levitation may look like magic, but there are a few scientific tricks behind it. Magnetic systems, optical levitation and acoustics only work with certain objects, but researchers at the University of Chicago have developed a method to levitate basically anything, using differences in temperature.
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A new flexible material can block various portions of the electromagnetic spectrum while allowing others through. The material has the potential to improve solar cell efficiencies and create window coatings that not only let in visible light and keep out heat, but also block electromagnetic signals.
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Metals that conduct electricity also produce heat, right? Well, no, not all of them, according to recent research led by Berkeley Lab. They've found one type of metal that keeps its cool as electrical current moves through it, and may lead to a range of new and super-efficient electrical devices.
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Flir Systems has announced two new additions to its Lepton-based range of thermal imaging solutions. The pocket-sized Scout TK is aimed at outdoor types, while the entry-level TG130 is heading for home and small business use.
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Data from NASA's Cassini spacecraft now indicates that the plumes from Saturn's moon Enceladus may be due to present-day hydrothermal activity in the vast ocean beneath the crust of the frozen moon, raising the possibility that Enceladus may harbor life.
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For a long time, scientists have been searching for an answer as to how galaxy clusters regulate the number of stars they create. A team of researchers from MIT, Columbia University and Michigan State University believe they have found the answer.
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Former NASA engineer-turned-inventor Mark Rober thinks nuking our food shouldn't involve so much guesswork. His take on the microwave offers a thermal vision display of your food as it cooks, so you know exactly when it's time to chow down.
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In Melbourne's inner-northern suburb of Brunswick stands a beacon of green and thoughtful design. The Commons is a beautiful five-story apartment block with sustainability emanating from every square foot, from the bicycle rack to the communal veggie garden on its roof.
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