Additive manufacturing drives future of ceramic industry, plus more inside April 2021 ACerS Bulletin
The April 2021 issue of the ACerS Bulletin—featuring articles on additive manufacturing techniques and potential—is now available online. Plus—new C&GM.
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Current methods of graphene production face tradeoffs among speed, cost, and material quality. Researchers from the Indian Institute of Technology Patna propose a new method based on plasma spraying that may offer the best outcome for all of these factors.
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Scheelite is one of the main minerals mined commercially as a source of tungsten. Researchers at Wuhan University of Science and Technology in China investigated the effects of different grinding media on flotation, which is a method for extracting tungsten from scheelite.
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Graphene nanoribbons are a family of carbon allotropes that exhibit semiconducting properties promising for electronic applications. However, the conventional bottom-up synthesis method for graphene nanoribbons is a costly and low-yield process. Researchers led by the Moscow Institute of Physics and Technology developed an alternative method that is higher yield and lower cost.
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Carbon nanotubes demonstrate much higher tensile strength than carbon fibers, but growing nanotubes in bulk while retaining this property is an obstacle that limits their commercial applications. Researchers in Japan developed a new fabrication method that could overcome the challenge of growing nanotubes in bulk.
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Transparent ceramics serve as the gain medium in many commercial lasers, yet the push to develop new and improved ceramics for this application continues. In two papers published this year, an international team of researchers investigates the influence of different processing parameters on the properties of nanocomposite yttrium magnesium oxide ceramics.
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Common lithographic techniques used to etch patterns onto a surface run into difficulties when cutting 2D materials. Researchers at École Polytechnique Fédérale de Lausanne developed a thermal scanning probe lithography method that can cut the smallest reported feature for a direct cutting method to date.
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Thermal energy storage technologies are one way to store energy generated from renewable sources. But producing materials that can contain the high-temperature and corrosive materials integral to this technology is an ongoing area of research. Two recent ACerS journal articles explore methods of fabricating C/C-SiC CMCs for use as container materials.
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Polymer-derived ceramic structures are difficult to manufacture using additive manufacturing processes because of low viscosity of the polymer state. Researchers at the University of Texas at Dallas successfully demonstrated the use of gel-like viscoplastic fluid to support preceramic polymers during the printing process.
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Metalenses are an emerging technology for controlling light that could someday replace traditional lenses. However, they generally lack dynamic control over their optical properties and are limited to passive optical applications. Researchers from the United States and Italy investigated infiltrating metalenses with liquid crystals to allow for dynamic control.
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