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 ultrahigh-temperature ceramics.
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As new energy conversion and miniaturized electronic systems are developed, it is desirable to have a material that exhibits both extremely low thermal and high electrical conductivities. University of Bayreuth researchers fabricated a flexible carbon/silicon nonwoven composite with such properties, as well as being flame resistant and thermally stable.
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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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Hollow silica particles exhibit lower thermal conductivities than current common thermal insulation materials, while also being easier and cheaper to fabricate than state-of-the-art insulating aerogels. Two recent studies demonstrate the work being done to develop stable and scalable hollow silica particle-based composites for next-generation thermal insulation systems.
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Many researchers are working to uncover alternatives to yttria stabilized zirconia for use as environmental barrier coatings. High-entropy oxides are among the classes of materials being explored, and two papers in Journal of the American Ceramic Society explore different high-entropy oxide systems.
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In concentrated solar power systems, higher operating temperature leads to greater efficiency—if the thermal energy is properly managed. Heat exchangers are one option for thermal management, and researchers in Switzerland and Italy explored designing ceramic lattice structures for use in such devices.
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The expanded range of motion available to stretchable electronics makes it difficult to maintain stable thermal conductance under large deformation. Two researchers from China describe several aspects of thermal management strategies that must be considered and offer several possible solutions that are worth further investigation.
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Though gas ovens are considered more energy efficient than electric ovens, they still face challenges with dissipation of heat into the environment. Porous volumetric ceramic burners are a combustion technology that may improve heat transfer in gas ovens, and researchers in Germany investigated the technology’s heat transfer mechanisms to better illuminate its potential.
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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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