Selected Scattering on Quasi-Ordered Hexagonal Close-Packed Al Nanodents for Tunable Output of White LEDs
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چکیده
منابع مشابه
The Strength of Binary Junctions in Hexagonal Close-Packed Crystals
A comparative study of non-coplanar binary dislocation junctions in magnesium (Mg) and beryllium (Be) is presented to examine the effects of elastic properties and active Burgers vectors on junction formation and destruction in hexagonal close-packed (hcp) crystals via discrete dislocation dynamics simulations. Two junction configurations formed at intersecting prismatic ð01 10Þ=basal ð0001Þ pl...
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The free energy and other thermodynamic properties of hexagonal-close-packed iron are calculated by direct ab initio methods over a wide range of pressures and temperatures relevant to the Earth’s core. The ab initio calculations are based on density-functional theory in the generalized-gradient approximation, and are performed using the projector augmented wave approach. Thermal excitation of ...
متن کاملDislocation Dynamics Simulations of Junctions in Hexagonal Close-Packed Crystals
The formation and strength of dislocations in the hexagonal closed packed material beryllium are studied through dislocation junctions and the critical stress required to break them. Dislocation dynamics calculations (using the code ParaDiS) of junction maps are compared to an analytical line tension approximation in order to validate our model. Results show that the two models agree very well....
متن کاملHexagonal close-packed Ni nanostructures grown on the „001... surface of MgO
We report the in situ microscopy observation of an unnatural phase of Ni, a highly strained hexagonal close-packed shcpd form which we believe is stabilized by heteroepitaxial growth on the s001d face of MgO. We find that the nanosized hcp nickel islands transform into the normal face-centered cubic structure when the size of the islands exceeds a critical value sabout 2.5 nm thick with a later...
متن کاملAtomic structures of twin boundaries in hexagonal close-packed metallic crystals with particular focus on Mg
We have investigated twin boundaries in double-lattice hexagonal close-packed metallic materials, focusing on their atomic geometry. Combining accurate ab-initio methods and large-scale atomistic simulations we address the following two fundamental questions: (i) What are the possible intrinsic twin boundary structures in hcp crystals? (ii) Are these structures stable against small distortions?...
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ژورنال
عنوان ژورنال: Applied Sciences
سال: 2019
ISSN: 2076-3417
DOI: 10.3390/app9173626