Results 1 to 10 of about 7,327,683 (206)

Acoustic geometric-phase meta-array [PDF]

open access: yesNew Journal of Physics, 2021
Metasurfaces based on geometric phase acquired from the conversion of the optical spin states provide a robust control over the wavefront of light, and have been widely employed for construction of various types of functional metasurface devices. However,
Bingyi Liu   +5 more
doaj   +2 more sources

Classical and generalized geometric phase in electromagnetic metasurfaces [PDF]

open access: diamondPhotonics Insights, 2022
. The geometric phase concept has profound implications in many branches of physics, from condensed matter physics to quantum systems. Although geometric phase has a long research history, novel theories, devices, and applications are constantly emerging
Yinghui Guo   +6 more
semanticscholar   +2 more sources

Scaling of geometric phases close to quantum phase transition in the XY chain [PDF]

open access: green, 2005
We show that geometric phase of the ground state in the XY model obeys scaling behavior in the vicinity of a quantum phase transition. In particular we find that geometric phase is non-analytical and its derivative with respect to the field strength ...
A. Bohm   +5 more
core   +2 more sources

Geometric phase coded metasurface: from polarization dependent directive electromagnetic wave scattering to diffusion-like scattering [PDF]

open access: goldScientific Reports, 2016
Ultrathin metasurface compromising various sub-wavelength meta-particles offers promising advantages in controlling electromagnetic wave by spatially manipulating the wavefront characteristics across the interface.
Ke Chen   +6 more
semanticscholar   +2 more sources

Geometric Mixing, Peristalsis, and the Geometric Phase of the Stomach. [PDF]

open access: yesPLoS ONE, 2015
Mixing fluid in a container at low Reynolds number--in an inertialess environment--is not a trivial task. Reciprocating motions merely lead to cycles of mixing and unmixing, so continuous rotation, as used in many technological applications, would appear
Jorge Arrieta   +5 more
doaj   +10 more sources

Wave description of geometric phase. [PDF]

open access: yesJournal of The Optical Society of America A-optics Image Science and Vision, 2022
Since Pancharatnam's 1956 discovery of optical geometric phase and Berry's 1984 discovery of geometric phase in quantum systems, researchers analyzing geometric phase have focused almost exclusively on algebraic approaches using the Jones calculus, or on
Luis Garza-Soto   +3 more
semanticscholar   +1 more source

Spatially Multiplexing of Metasurface for Manipulating the Focused Trefoil and Cinquefoil Vector Light Field

open access: yesNanomaterials, 2021
The trefoil and cinquefoil vector field are of essential significance for fundamental topology properties as the Hopf link and trefoil knots in the light field.
Rui Sun   +9 more
doaj   +1 more source

Geometric Phase in Optics: From Wavefront Manipulation to Waveguiding

open access: yesLaser & Photonics reviews, 2021
Geometric phase is a unifying and central concept in physics, including optics. As a matter of fact, optics played a pivotal role from the inception of this new paradigm, as some of the first experimental demonstrations have been carried out in optics. A
C. Jisha, Stefan Nolte, A. Alberucci
semanticscholar   +1 more source

Nonlinear Wavefront Control by Geometric‐Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry [PDF]

open access: yesAdvanced Optical Materials, 2020
Nonlinear Pancharatnam–Berry phase metasurfaces facilitate the nontrivial phase modulation for frequency conversion processes by leveraging photon‐spin dependent nonlinear geometric‐phases.
Bingyi Liu   +7 more
semanticscholar   +1 more source

Geometric phase in Taub-NUT spacetime

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Constructing the Hamiltonian in the $$\eta $$ η -representation, we explore the geometric phase in the Taub-NUT spacetime, which is spherically symmetric and stationary.
Chandrachur Chakraborty   +1 more
doaj   +1 more source

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