Results 1 to 10 of about 230,654 (298)

Experimental synthesis of partially coherent beam with controllable twist phase and measuring its orbital angular momentum [PDF]

open access: yesNanophotonics, 2021
Twist phase is a nontrivial second-order phase that only exists in a partially coherent beam. Such twist phase endows the partially coherent beam with orbital angular momentum (OAM) and has unique applications such as in super-resolution imaging. However,
Wang Haiyun   +6 more
doaj   +2 more sources

Propulsive Force Characterization of a Bio-Robotic Sea Lion Foreflipper: A Kinematic Basis for Agile Propulsion [PDF]

open access: yesBiomimetics
Unmanned underwater vehicles (UUVs) capable of agile, high-speed maneuvering in complex environments require propulsion systems that can dynamically modulate three-dimensional forces.
Anthony Drago   +4 more
doaj   +2 more sources

Progress on Studies of Beams Carrying Twist

open access: yesPhotonics, 2021
Optical twist has always been a hot spot in optics since it was discovered in 1993. Twisted beams can be generated by introducing the twist phase into partially coherent beams, or by introducing the twisting phase into anisotropic beams, whose spectral ...
Zhenglin Liu   +4 more
doaj   +1 more source

Standard twist and non-twist maps [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2023
Symplectic maps can provide a straightforward and accurate way to visualize and quantify the dynamics of conservative systems with two degrees of freedom.
Felipe G. Souza   +2 more
doaj   +1 more source

Template Effect of Multi-Phase Liquid Crystals

open access: yesCrystals, 2021
The template effects on stability of twist structure liquid crystals (LCs) were investigated. By refilling a cholesteric LC (CLC) of different pitch into a blue phase LC (BPLC) template or a sphere phase LC (SPLC) template, a multi-phase and multi-pitch ...
Yao Gao, Tengfei Huang, Jiangang Lu
doaj   +1 more source

Propagation Properties of a Twisted Hermite-Gaussian Correlated Schell-Model Beam in Free Space

open access: yesFrontiers in Physics, 2022
We introduce a novel type of twisted partially coherent beams with a nonconventional correlation function, named the twisted Hermite-Gaussian correlated Schell-model (THGCSM) beam.
Leixin Liu   +11 more
doaj   +1 more source

Аngular optical characteristics of a standard twist indicator with a phase compensator [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Физика, 2022
Background and Objectives: One of the disadvantages of a liquid crystal display device for information on the twist effect is its relatively narrow viewing angle.
Simonenko, Georgy Valentinovich
doaj   +1 more source

Are circadian amplitudes and periods correlated? A new twist in the story [version 1; peer review: 2 approved]

open access: yesF1000Research, 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

Phase conjugation of twisted Gaussian Schell model beams in stimulated down-conversion

open access: yesNanophotonics, 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
doaj   +1 more source

Research Progress on the Twisted Partially Coherent Beams

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2020
Under the action of twist phase, partially coherent beams display their unique advantages in many applications fields, such as beam shaping, particle trapping, optical imaging, free-space communications, and so on.
WANG Haiyun; LIU Lin; CAI Yangjian
doaj   +1 more source

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