نتایج جستجو برای: lattice parameters

تعداد نتایج: 665019  

2010
M. Jafari N. Zarifi

The effect of pressure on the hexagonal close-packed structure of titanium is investigated. The lattice parameters of the equilibrium structure were determined in terms of the Gibbs free energy using the Epitaxial Bain Path method. When this process was repeated for several pressures, the effect of pressure on the lattice parameters was revealed. The calculated lattice parameters were in good a...

Journal: :journal of optoelectronical nano structures 0
khojasteh zarei 1department of electronic engineering, sepidan branch,islamic azad university, sepidan, iran. ghahraman solookinejad department of physics, marvdashtbranch,islamic azad university, marvdasht, iran. masoud jabbari department of electrical engineering, marvdasht branch, islamic azad university, marvdasht, iran.

in this paper, a photonic crystal waveguide with point defects and lattice constant perturbations of +5%, -5% are being investigated. firstly waveguide structures with constant and specific parameters are being studied and photonic band gap diagrams for te/tm modes are depicted; then pulse propagation in the frequencies available in the band gap are shown. after that, effects of parameters like...

Journal: :Soft matter 2016
K P Zuhail Surajit Dhara

We report experimental studies on 2D colloidal crystals of dimers stabilized by vortex-like defects in planar nematic and π/2 twisted nematic cells. The dimers are prepared and self-assembled using a laser tweezer. We study the effect of temperature and electric field on the lattice parameters of the colloidal crystals. The lattice parameters vary with the temperature in the nematic phase and a...

Journal: :IACR Cryptology ePrint Archive 2017
Nabil Alkeilani Alkadri Johannes A. Buchmann Rachid El Bansarkhani Juliane Krämer

Selecting parameters in lattice-based cryptography is a challenging task, which is essentially accomplished using one of two approaches. The first (very common) approach is to derive parameters assuming that the desired security level is equivalent to the bit hardness of the underlying lattice problem, ignoring the gap implied by available security reductions. The second (barely used) approach ...

Journal: :Nuclear Physics B - Proceedings Supplements 1998

2005
Karl Entacher Bernhard Hechenleitner

We present results from an extensive parallel search for Korobov lattice rules using the LLL-spectral test with a new normalization strategy. The resulting lattice parameters are distributed via a web-server [9] which provides general information on the spectral test, a database for lattice rule parameters, software for spectral test calculations and related applications, efficient on-line para...

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