Results 11 to 20 of about 4,107,894 (287)
Twist Phase Matching in Two-Dimensional Materials [PDF]
Physical Review Letters, 2023 Optical phase matching involves establishing a proper phase relationship between the fundamental excitation and generated waves to enable efficient optical parametric processes. It is typically achieved through birefringence or periodic polarization. Here, we report that the interlayer twist angle in two-dimensional (2D) materials creates a nonlinear ...
Hong, Hao +10 more
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Twist changes in threadlines moving over surfaces [PDF]
, 1983 An investigation has been carried out into the twist blockage which may occur when yarns pass over guides or other surfaces. The influence of primary physical parameters such as surface curvature, are and length of contact, yarn twist level and ...
Eltahan, Ahmad Elsayed
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F1000Research, 2023 Three parameters are important to characterize a circadian and in general any biological clock: period, phase and amplitude. While circadian periods have been shown to correlate with entrainment phases, and clock amplitude influences the phase response ...
Hanspeter Herzel +6 more
doaj +1 more source
Correlated insulating phases in the twisted bilayer graphene* [PDF]
Chinese Physics B, 2021 We review analytical and numerical studies of correlated insulating states in twisted bilayer graphene, focusing on real-space lattice models constructions and their unbiased quantum many-body solutions. We show that by constructing localized Wannier states for the narrow bands, the projected Coulomb interactions can be approximated by interactions of ...
Da Liao, Yuan +3 more
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Twisting kappa-deformed phase space [PDF]
Journal of Physics A: Mathematical and General, 2003 LaTeX, 18 pages, revised version, accepted for publication in Journal of Physics ...
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Phase conjugation of twisted Gaussian Schell model beams in stimulated down-conversion
Nanophotonics, 2021 Stimulated parametric down-conversion is a nonlinear optical process that can be used for phase conjugation and frequency conversion of an optical field.
dos Santos Gustavo H. +8 more
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Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl Swimming
Biomechanics, 2023 This study aimed to estimate the trunk twist angle from the shoulder and hip rotation angles in short-distance crawl swimming and to elucidate the twist motion of the relationship between the trunk and the rotation angular velocity in response to changes
Hiroki Hyodo +3 more
doaj +1 more source
Experimental Synthesis and Demonstration of the Twisted Laguerre–Gaussian Schell-Mode Beam
Photonics, 2023 The twisted Laguerre–Gaussian Schell-model (TLGSM) beam is a novel type of partially coherent beam embedded with both the second-order twist phase and the classical vortex phase.
Yuning Xia +5 more
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Photonics, 2022 Analytical expressions for the cross-spectral density matrix of a partially coherent twisted Laguerre-Gaussian pulsed (PCTLGP) beam in anisotropic atmospheric turbulence are derived based on the extended Huygens–Fresnel principle.
Ying Xu, Yonggen Xu, Tiejun Wang
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Geometric phase for twisted light
Optics Express, 2023 Polarization vectors of light traveling in a coiled optical fiber rotate around its propagating axis even in the absence of birefringence. This rotation was usually explained due to the Pancharatnam-Berry phase of spin-1 photons. Here, we use a purely geometric method to understand this rotation.
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