Results 41 to 50 of about 24,867 (278)
Single-end hybrid Rayleigh Brillouin and Raman distributed fibre-optic sensing system
Light: Advanced Manufacturing, 2023 Backscattered lightwaves from an optical fibre are used to realise distributed fibre optic sensing (DFOS) systems for measuring various parameters. Rayleigh, Brillouin, and Raman backscattering provide different sensitivities to different measurands and ...
Linjing Huang +4 more
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APL Photonics, 2017 We introduce a finite-difference frequency-domain algorithm for coupled acousto-optic simulations. First-principles acousto-optic simulation in time domain has been challenging due to the fact that the acoustic and optical frequencies differ by many ...
Yu Shi, Alexander Cerjan, Shanhui Fan
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Background-deflection Brillouin microscopy reveals altered biomechanics of intracellular stress granules by ALS protein FUS [PDF]
, 2018 Altered cellular biomechanics have been implicated as key photogenic triggers in age-related diseases. An aberrant liquid-to-solid phase transition, observed in in vitro reconstituted droplets of FUS protein, has been recently proposed as a possible ...
Antonacci, Giuseppe +3 more
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Scripta Materialia, 2019 Abstract We employ gigahertz frequency ultrasonic waves to non-invasively image grain microstructure in polycrystalline ceria. This technique, termed time-domain Brillouin scattering (TDBS), is a pump-probe technique that launches and monitors ultrasonic waves as they propagate into the sample. We demonstrate TDBS's capability to image microstructure
Yuzhou Wang +6 more
openaire +2 more sources
Denoising of Brillouin Gain Spectrum Images for Improved Dynamic Measurements of BOTDR
IEEE Photonics Journal, 2023 Brillouin optical time-domain reflectometry (BOTDR) is widely used for strain and temperature measurements in various fields. However, the accuracy and reliability of the measurements are often limited by the noise in the sensor signals.
Bo Li, Ningjun Jiang, Xiaole Han
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Valley Hall effect in disordered monolayer MoS2 from first principles [PDF]
, 2015 Electrons in certain two-dimensional crystals possess a pseudospin degree of freedom associated with the existence of two inequivalent valleys in the Brillouin zone.
Olsen, Thomas, Souza, Ivo
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3D-imaging of polycrystal texture, boundaries using time-domain Brillouin scattering
Scilight, 2021 Textural changes, boundaries and interfaces can be characterized at extreme conditions with modifications to the light scattering technique.
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Cracking assessment in concrete structures by distributed optical fiber [PDF]
, 2015 In this paper, a method to obtain crack initiation, location and width in concrete structures subjected to bending and instrumented with an optical backscattered reflectometer (OBR) system is proposed.
Casas Rius, Joan Ramon +2 more
core +2 more sources
Research on the System of Pulse Synthesis Pre-pump Rayleigh BOTDA technology
MATEC Web of Conferences, 2015 The conventional Rayleigh scattering Brillouin Optical Time Domain Analysis (Rayleigh BOTDA) system adopted the leakage light ahead of the pump pulse to generate Rayleigh back-scattering light.
Shang Qiufeng +3 more
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Parallel imaging with phonon microscopy using a multi-core fibre bundle detection
Photoacoustics, 2023 In this paper, we show a proof-of-concept method to parallelise phonon microscopy measurements for cell elasticity imaging by demonstrating a 3-fold increase in acquisition speed which is limited by current acquisition hardware.
Rafael Fuentes-Domínguez +7 more
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