TMAC
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Defects, Corrugation and Temperature Govern Rarefied-Air Drag on Graphene Coatings
arXiv:2602.00285v3 Announce Type: replace-cross Abstract: In rarefied atmospheric environments, where continuum fluid dynamics breaks down, aerodynamic drag is governed by gas-surface momentum exchange, making surface structure and chemistry key design knobs. Using molecular dynamics simulations, we show that coating the $\alpha$-Al2O3(0001) surface with graphene markedly reduces the tangential momentum accommodation coefficient (TMAC) of N2, shifting scattering toward more specular...