نتایج جستجو برای: hexagonal close packed
تعداد نتایج: 214654 فیلتر نتایج به سال:
Abstract An optical vortex possesses a ring-shaped spatial profile and orbital angular momentum (OAM) owing to its helical wavefront. This form of structured light has garnered significant attention in recent years, it enabled new investigations fundamental physics applications. One such exciting application is laser-based material transfer for nano-/micro-fabrication. In this work, we demonstr...
Hourglass-shaped Ni nanoparticles were synthesized with a hexagonal close packed (hcp) structure. The unconventional crystalline structure could be stabilized by intensive utilization of hexadecylamine. The dense organic layer on the surface protected the meta-stable crystalline structure.
A temperature-induced phase transition of a 2D H-bonded assembly, enabling quadruple H-bonding interactions, from a hexagonal porous network into a close-packed rhombic arrangement has been observed on Ag(111) by STM imaging.
Monodisperse granular flows often develop regions with hexagonal close packing of particles. We investigate this effect in a system of inelastic hard spheres driven from below by a "thermal" plate. Molecular dynamics simulations show, in a wide range of parameters, a close-packed cluster supported by a low-density region. Surprisingly, the steady-state density profile, including the close-packe...
In order to predict the stable polymorph of iron under core conditions, calculations have been performed on all the Ž . Ž . candidate phases proposed for inner core conditions, namely, body-centred cubic bcc , body-centred tetragonal bct , Ž . Ž . hexagonal close-packed hcp , double-hexagonal close-packed dhcp and an orthorhombically distorted hcp polymorph. Our simulations are ab initio free e...
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