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Showing posts with the label graphite

Proximity screening placing conducting gates 1 nm away from carbon lattice pushes graphene electronic charge homogeneity orders of magnitude

https://phys.org/news/2025-09-proximity-screening-graphene-electronic-quality.html "despite theoretical superiority/ unique Dirac electrons, graphene underperforms gallium arsenide semiconductor heterostructure in high-quality 2D electron systems... disorder from bumpy electron-hole landscape disrupting electron flow, overcome placing flat graphite crystal close to graphene layer, separated by 3 to 4 hexagonal boron nitride atomic layers, graphite acting as gate generating opposite charge canceling out disturbance... less magnetism... quantum computing, high-frequency electronics, precision metrology"

Lightweight, robust aerogel composites combining high-temperature insulation with mechanical load-bearing can be fabricated in large sizes

https://www.eurekalert.org/news-releases/1090045 "carbon fiber reinforced using expandable graphite interfacial bonding agent... ceramic-based aerogel composites with novel precursor impregnation/ in-situ dual-morphology growth... enables simultaneous formation of dense silicon carbide coatings/ nanowire network within carbon fiber structure, improving oxidation resistance/ ablation... both types of composites demonstrated the feasibility of large-size fabrication, with samples successfully prepared and capable of being cut and processed as needed" Related: Highly porous dual-phase high-entropy ultrahigh-temperature ceramic with outstanding properties https://www.eurekalert.org/news-releases/1093451 Bilayer ceramic coating shown to significantly increase tool life in titanium alloy micromachining https://techxplore.com/news/2026-01-bilayer-ceramic-coating-shown-significantly.html Biomass‑derived anisotropic silicon carbide aerogels with orientation‑dependent electromagnetic a...