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A particle beam of very small cross-section is useful in many accelerator applications including biological and medical ones. We show the capability of the channeling technique using a micron-sized structure on a surface of a single…

Accelerator Physics · Physics 2009-11-07 S. Bellucci , V. M. Biryukov , Yu. A. Chesnokov , V. Guidi , W. Scandale

Crystals are a state of matter characterised by periodic order. Yet crystalline materials can harbour disorder in many guises, such as non-repeating variations in composition, atom displacements, bonding arrangements, molecular…

Materials Science · Physics 2019-12-03 Arkadiy Simonov , Andrew L. Goodwin

We have modified the metal-assisted transfer technique to obtain large-area few-layer flakes from transition metal dichalcogenides bulk crystals by introducing an initial stage - exfoliation of the bulk crystal onto an intermediate…

Materials Science · Physics 2024-09-10 T. A. Kamenskaya , I. A. Eliseyev , V. Yu. Davydov , A. Yu. Kuntsevich

Particles passing through a crystal under planar channeling experience transverse oscillations in their motion. As channeled particles approach the atomic planes of a crystal, they are likely to be dechanneled. This effect was used in…

Accelerator Physics · Physics 2016-03-23 A. I. Sytov , V. Guidi , V. V. Tikhomirov , E. Bagli , L. Bandiera , G. Germogli , A. Mazzolari

Using the spectral approach, we analyze the effective properties of a composite which deviates slightly from periodicity. We find that, when the inclusions are randomly displaced from their equilibrium positions, the sharp resonances seen…

Materials Science · Physics 2009-11-07 Sergey V. Barabash , David Stroud

The thermodynamics of strongly anisotropic crystalline surfaces is analogous to that of a binary mixture exhibiting phase separation. On a metastable planar surface, formation of stable orientations requires a nucleation process, in which…

Materials Science · Physics 2019-11-05 Thomas Philippe , Hervé Henry , Mathis Plapp

A kinetic Monte Carlo approach is applied to study physical mechanisms responsible for the breakup of nanowires with the diamond cubic crystal structure into a chain of nanoparticles discovered in preceding experiments on Silicon nanowires.…

Materials Science · Physics 2020-02-18 Vyacheslav N. Gorshkov , Vladimir V. Tereshchuk , Pooya Sareh2

Crystals form regular and robust structures that under extreme conditions can melt and recrystallize into different arrangements in a process that is called crystal metamorphism. While crystals exist due to the breaking of a continuous…

Quantum Physics · Physics 2021-01-04 Victor M. Bastidas , Marta P. Estarellas , Tomo Osada , Kae Nemoto , William J. Munro

Coherent x-ray micro-diffraction and local mechanical loading can be combined to investigate the mechanical deformation in crystalline nanostructures. Here we present measurements of plastic deformation in a copper crystal of sub-micron…

Materials Science · Physics 2013-05-31 G. Beutier , M. Verdier , M. De Boissieu , B. Gilles , F. Livet , M. -I. Richard , T. W. Cornelius , S. Labat , O. Thomas

We use vortex photon fields with orbital and spin angular momentum to probe chiral fluctuations within liquid crystals. In the regime of iridescence with a well-defined pitch length of chirality, we find low energy Raman scattering that can…

Soft Condensed Matter · Physics 2023-08-21 Silvia Müllner , Florian Büscher , Angela Möller , Peter Lemmens

Ultrasoft colloids typically do not spontaneously crystallize, but rather vitrify, at high concentrations. Combining in-situ rheo-SANS experiments and numerical simulations we show that shear facilitates crystallization of colloidal star…

Soft Condensed Matter · Physics 2018-02-21 J. Ruiz-Franco , J. Marakis , N. Gnan , J. Kohlbrecher , M. Gauthier , M. P. Lettinga , D. Vlassopoulos , E. Zaccarelli

We report our theoretical results on the emergence of rectangular- and square-shaped magnetic skyrmion crystals on a centrosymmetric square lattice with magnetic anisotropy. By performing the simulated annealing for a frustrated spin model…

Mesoscale and Nanoscale Physics · Physics 2022-06-10 Satoru Hayami

Dispersion properties of electromagnetic crystals formed by small uniaxial resonant scatterers (magnetic or electric) are studied using the local field approach. The goal of the study is to determine the conditions under which the…

Materials Science · Physics 2009-11-11 Pavel A. Belov , Constantin R. Simovski

A version for intense $\gamma $-ray radiation based on the multiphoton scattering of strong laser radiation on relativistic particle beam channeled in a crystal is proposed. The scheme is considered when the incident laser beam and charged…

Quantum Physics · Physics 2015-06-26 A. K. Avetissian , K. Z. Hatsagortsian , G. F. Mkrtchian , Kh. V. Sedrakian

Freezing of charged colloids on square or triangular two-dimensional periodic substrates has been recently shown to realize a rich variety of orientational orders. We propose a theoretical framework to analyze the corresponding structures.…

Statistical Mechanics · Physics 2009-11-10 R. Agra , F. van Wijland , E. Trizac

Plastic deformations in body-centered-cubic (BCC) crystals have been of critical importance in diverse engineering and manufacturing contexts across length scales. Numerous experiments and atomistic simulations on BCC crystals reveal that…

Materials Science · Physics 2018-02-09 Hansohl Cho , Curt A. Bronkhorst , Hashem M. Mourad , Jason R. Mayeur , D. J. Luscher

We report on the results of theoretical simulations of the electron channeling in a bent silicon crystal. The dynamics of ultra-relativistic electrons in the crystal is computed using the newly developed part [1] of the MBN Explorer package…

Accelerator Physics · Physics 2013-07-26 G B Sushko , V G Bezchastnov , A V Korol , Walter Greiner , A V Solov'yov , R G Polozkov , V K Ivanov

The possibility to convert the photon beam linear polarization into circular one at photon energies of hundreds GeV with the use of crystals is considered. The energy and orientation dependencies of refractive indexes are investigated in…

High Energy Physics - Experiment · Physics 2007-05-23 N. Z. Akopov , A. B. Apyan , S. M. Darbinyan

As inkjet technology develops to produce smaller droplets, substrate features such as accidental scratches or manufacturing defects can potentially affect the outcome of printing, particularly for printed electronics where continuous tracks…

Fluid Dynamics · Physics 2021-09-15 Khaled H. A. Al-Ghaithi , Oliver G. Harlen , Nikil Kapur , Mark C. T. Wilson

Nematic drops suspended in the isotropic phase of the same substance were subjected to alternating electrical fields of varying frequency. The system was carefully kept in the isotropic-nematic coexistance region, which was broadened due to…

Soft Condensed Matter · Physics 2009-03-27 Günter K. Auernhammer , Jinyu Zhao , Beate Ullrich , Doris Vollmer