The Hall-Petch relation describes how a ceramic becomes harder as its grains become smaller. But when the grains become small enough, the relation begins to break down. Luis Sotelo Martin and Ricardo Castro of the University of California, Davis, showed that adding extra aluminum to zinc aluminate can extend the Hall-Petch relation.
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Traditionally, metalenses use nanoscale arrays of columns or fin-like structures to focus light. In a new open-access paper, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences developed a metalens that uses very deep, very narrow holes instead.
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Recent articles on carbon nanotube-containing ceramic composites showed improved properties compared to the original ceramic composite. Two recent articles in ACerS journals demonstrate these improvements.
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Synthesizing multilayer borophene is difficult because of the tendency of boron atoms to cluster. Researchers at Northwestern and Rice Universities discovered they could synthesize bilayer borophene by growing it on a special silver substrate.
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Developing new ways to characterize graphene is essential to developing more rigorous quality standards. Researchers at the University of Adelaide in Australia explored using thermogravimetric analysis to evaluate graphene quality.
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Gallium nitride-based blue LEDs are typically grown on patterned sapphire substrates that are imaged using SEM and optical microscope systems to ensure the substrate has the correct structure. Researchers in Taiwan developed a new gallium nitride-based metalens that improves the clarity of substrate images.
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Despite the extensive number of studies on high-entropy 3D crystalline solids, very little has been reported on high-entropy 2D materials. Researchers led by Indiana University–Purdue University Indianapolis demonstrated the opportunities for creating high-entropy 2D materials using MXenes.
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Periprosthetic joint infection is a serious complication that can occur in joint replacement surgery. Researchers in Italy and the United States review the research on using nanotechnology to prevent and treat PJI.
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MXenes, the family of 2D transition metal carbides and nitrides, was first discovered in 2011. To celebrate the 10th anniversary of this discovery, researchers led by Drexel University professor and ACerS Fellow Yury Gogotsi published a forward-looking review article in Science that explores the impact and promise of this material family.
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Artists and scientists alike find inspiration in nature. But two recent scientific studies found inspiration in the same creature: the mantis shrimp. The creature’s incredibly tough materials and complex eyes inspired innovations that could lead to fracture-resistant biocomposites and highly advanced optical sensors.
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