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- W3110701908 abstract "This article presents inelastic thermal neutron scattering experiments probing the phonon dispersion in mesoporous silicon with pores 8 nm across. Scattering studies reveal the energy–momentum relation for transverse and longitudinal phonons along the high symmetry directions ΓL¯, ΓK¯ and ΓX¯ in the Brillouin zone. The dispersion up to phonon energies of 35 meV unambiguously proves that the phonon group velocities in highly-crystalline silicon are not modified by nanostructuring down to sub-10 nanometer length scales. On these length scales, there is apparently no effect of structuring on the elastic moduli of mesoporous silicon. No evidence can be found for phonon-softening in topologically complex, geometrically disordered mesoporous silicon putting it in contrast to silicon nanotubes and nanoribbons." @default.
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- W3110701908 date "2021-01-01" @default.
- W3110701908 modified "2023-09-27" @default.
- W3110701908 title "Phonons in highly-crystalline mesoporous silicon: The absence of phonon-softening upon structuring silicon on sub-10 nanometer length scales" @default.
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- W3110701908 doi "https://doi.org/10.1016/j.micromeso.2020.110814" @default.
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