Results 51 to 60 of about 49,859 (245)

Light scattering by magnons in whispering gallery mode cavities

open access: yes, 2017
Brillouin light scattering is an established technique to study magnons, the elementary excitations of a magnet. Its efficiency can be enhanced by cavities that concentrate the light intensity. Here, we theoretically study inelastic scattering of photons
Bauer, Gerrit E. W.   +2 more
core   +2 more sources

Structure Formation in Butterfly Scales: Interplay of Genetic Control, Mechanical Instabilities, and Dynamic Material Properties

open access: yesAdvanced Functional Materials, EarlyView.
Butterfly wing scales are intricate cuticular functional nanosctructures. This perspective suggests that spatially varying material properties, cytoskeletal constraints, and growth‐driven mechanical instabilities shape the resulting nanoscale architectures created from single cells.
Anupama Prakash   +10 more
wiley   +1 more source

Optoacoustics—Advances in high-frequency optomechanics and Brillouin scattering

open access: yesAPL Photonics, 2019
The fields of cavity optomechanics and Brillouin scattering, linked by common underlying physical mechanisms, involve the interaction of light waves with mechanical vibrations at the micro- and nanoscale.
Birgit Stiller   +2 more
doaj   +1 more source

Nonresonant inelastic light scattering in the Hubbard model

open access: yes, 2002
Inelastic light scattering from electrons is a symmetry-selective probe of the charge dynamics within correlated materials. Many measurements have been made on correlated insulators, and recent exact solutions in large dimensions explain a number of ...
A. Georges   +38 more
core   +1 more source

Subwavelength-diameter optical fibers for Brillouin scattering [PDF]

open access: yes, 2015
International audienceBy confining light into subwavelength-diameter tapered optical fibers, we demonstrated a new type of Brillouin light scattering from surface and hybrid acoustic waves.
Beugnot, Jean-Charles   +1 more
core   +3 more sources

Inducing Ferromagnetism by Structural Engineering in a Strongly Spin‐Orbit Coupled Oxide

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Magnetic materials with strong spin‐orbit coupling (SOC) are essential for the advancement of spin‐orbitronic devices, as they enable efficient spin‐charge conversion, complex magnetic structures, spin‐valley physics, topological phases and other exotic phenomena.
Ji Soo Lim   +19 more
wiley   +1 more source

Orbital angular momentum conservation in Brillouin light scattering within a ferromagnetic sphere

open access: yesNew Journal of Physics, 2018
Magnetostatic modes supported by a ferromagnetic sphere have been known as the Walker modes, each of which possesses an orbital angular momentum as well as a spin angular momentum along a static magnetic field.
A Osada, A Gloppe, Y Nakamura, K Usami
doaj   +1 more source

Fast Measurement of Brillouin Frequency Shift in Optical Fiber Based on a Novel Feedforward Neural Network

open access: yesPhotonics, 2021
Brillouin scattering-based distributed optical fiber sensors have been successfully employed in various applications in recent decades, because of benefits such as small size, light weight, electromagnetic immunity, and continuous monitoring of ...
Fen Xiao, Mingxing Lv, Xinwan Li
doaj   +1 more source

Hydrodynamic correlation functions in nematic liquid crystals: Propagating modes [PDF]

open access: yes, 1978
The spectral densities of nematic liquid crystals are calculated in the hydrodynamic limit with particular reference to those spectral densities that play a role in the Brillouin lines of the light scattering spectrum.
Carle, D.L.   +2 more
core   +1 more source

Observation of Two‐Photon Resonant Raman Scattering via the Biexciton Level in Two‐Dimensional Halide Perovskite (C6H5C2H4NH3)2PbI4

open access: yesAdvanced Functional Materials, EarlyView.
Efficient two‐photon resonant Raman scattering (TRRS) is observed in the layered perovskite (PEA)2PbI4, with the biexciton level acting as an intermediate state. TRRS undergoes two‐photon frequency shift upon input frequency tuning, persists up to 90 K, and shows clear threshold behavior and polarization selection rules.
Seung Han Shin   +7 more
wiley   +1 more source

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