Traditionally, metalenses offer either spatial or spectral control of light, not both. However, a new metalens developed by researchers from Columbia University and the City University of New York offers both functionalities.
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Small scale, big discoveries: Reducing thickness of antiferroelectric films turns them ferroelectric
While size effects in ferroelectric materials have been extensively studied, there are far fewer studies on how structure and properties evolve in antiferroelectric materials with reduced dimensions. In a recent open-access paper, researchers report the surprising discovery that below a certain thickness, antiferroelectric films will become completely ferroelectric.
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To celebrate the milestone of the 20th volume of the International Journal of Applied Ceramic Technology, the editorial team assembled a selection of journal papers representing the excellent work from the advanced ceramics community. The focus this month is ceramic matrix composites.
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Most explorations of plastic deformation in ceramics have focused on oxide systems. A recent study led by researchers at Tsinghua University in China demonstrated the possibility of plastic deformation in nonoxide ceramics as well, specifically silicon nitride, by harnessing a dual-phase structural configuration.
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Through an accidental discovery, NIST researcher Gary Zabow discovered a new microprinting method based on sugar and corn syrup that allows microscale arrays to be deposited with precision on highly curved, complex surfaces.
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The January/February 2023 issue of the ACerS Bulletin—featuring a look at some future battery technologies—is now available online. Plus—optical-grade ceramics and IYOG conclusion.
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Even when a shape-memory ceramic’s lattice compatibility is improved, it still often experiences cracking after just a few dozen transformation cycles. Researchers at the Massachusetts Institute of Technology improved the cyclability of shape-memory zirconia ceramics with the help of a multimode modeling approach.
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Ferroelectric materials are expected to revolutionize the next generation of ultralow-power microelectronics. In a recent study, researchers led by the University of California, Berkeley achieved atomic-scale ferroelectricity in fluorite-structured zirconium dioxide thin films on silicon.
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Passive radiative cooling systems typically are implemented by applying special coatings to the walls or roof of a building. But windows play a significant role in heat transfer too. University of Notre Dame researchers used a quantum computing-assisted active learning scheme to develop a new high-performance transparent radiative cooling coating for windows.
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Cast iron blocks and steel fibers are the dominant materials used for brake shoes in the railway industry. Researchers from a Spain-based friction materials manufacturer found that the addition of glass fibers could improve the shoes’ friction performance and wear rates.
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