Results 81 to 90 of about 78,535 (255)

Brillouin Scattering Studies of La_{0.77}Ca_{0.23}MnO_3 Across Metal-Insulator Transition

open access: yes, 2003
Temperature-dependent Brillouin scattering studies have been carried out on La_{0.77}Ca_{0.23}MnO_3 across the paramagnetic insulator - ferromagnetic metal (I-M) transition.
Narayana, Chandrabhas   +4 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Ultranarrow-linewidth stimulated Brillouin scattering with fundamental acoustic waves

open access: yesAPL Photonics
Stimulated Brillouin scattering is a well-known nonlinear optical interaction valued for applications including narrow-linewidth lasers, phase conjugation, sensing, and RF-signal processing such as delay lines and filters.
Wendao Xu   +5 more
doaj   +1 more source

High-speed stimulated Brillouin scattering spectroscopy at 780 nm

open access: yesAPL Photonics, 2016
We demonstrate a high-speed stimulated Brillouin scattering (SBS) spectroscopy system that is able to acquire stimulated Brillouin gain point-spectra in water samples and Intralipid tissue phantoms over 2 GHz within 10 ms and 100 ms, respectively ...
Itay Remer, Alberto Bilenca
doaj   +1 more source

Optical sum rules that relate to the potential energy of strongly correlated systems

open access: yes, 2005
A class of sum rules for inelastic light scattering is developed. We show that the first moment of the non-resonant response provides information about the potential energy in strongly correlated systems.
Cooper, S. L.   +3 more
core   +1 more source

Quasi‐Single‐Mode Polaritonic Crystal for Hyperbolic Phonon‐Polaritons

open access: yesAdvanced Optical Materials, EarlyView.
Near‐field study of the polaritonic Fourier crystal with α‐MoO3 reveals that the hyperbolic phonon‐polaritons within the Type‐I Reststrahlen band may form a quasi‐single‐mode Bloch wave where only the fundamental mode propagates in the crystal. Our results demonstrate the realization of a quasi‐single‐mode regime for the inherently multimode hyperbolic
Sergey G. Menabde   +7 more
wiley   +1 more source

Brillouin cooling in a linear waveguide

open access: yesNew Journal of Physics, 2016
Brillouin scattering is not usually considered as a mechanism that can cause cooling of a material due to the thermodynamic dominance of Stokes scattering in most practical systems.
Yin-Chung Chen   +2 more
doaj   +1 more source

Spectral Selectivity Enhancement in Solar Absorber Multilayers through Titanium Oxynitride Thin Film Modulation

open access: yesAdvanced Optical Materials, EarlyView.
Optical and plasmonic properties of TiN and Ti(O)N thin films were tuned at the synthesis stage by modulating the oxygen pressure during room‐temperature pulsed laser deposition. Ti(O)N thin films exhibiting a highly metallic and peculiar double‐epsilon‐near‐zero (DENZ) behavior were produced.
Claudia P. Hallqvist   +9 more
wiley   +1 more source

The elastic stiffness tensor of cellulosic viscose fibers measured with Brillouin spectroscopy

open access: yesJPhys Photonics
Brillouin light scattering spectroscopy is applied to study the micromechanics of cellulosic viscose fibers, one of the commercially most important, man-made biobased fibers.
Caterina Czibula   +5 more
doaj   +1 more source

High-extinction VIPA-based Brillouin spectroscopy of turbid biological media

open access: yes, 2016
Brillouin microscopy has recently emerged as powerful technique to characterize the mechanical properties of biological tissue, cell and biomaterials.
Fiore, Antonio   +4 more
core   +1 more source

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