Results 1 to 10 of about 6,619 (75)
Non-Invasive Full Rheological Characterization via Combined Speckle and Brillouin Microscopy
IEEE Access, 2022 Rheology serves to measure the deformation and flow of materials. Its associated quantities, for example, the Young’s modulus, shear modulus, bulk modulus, or longitudinal modulus, are important in the biomedical field, in particular for soft ...
Johannes Wenzel +7 more
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Multi-Spectral Optimization for Tissue Probing Using Machine Learning
IEEE Photonics Journal, 2021 An optical approach for pigmented lesions detection in human skin is presented. As differences between normal skin tissue and pigmentation tissue (and even a change in pigmentation development) can be detected by their optical properties, this paper ...
Yarden Tzabari Kelman +4 more
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Single-Shot Structured Light Sensor for 3D Dense and Dynamic Reconstruction
Sensors, 2020 Structured light (SL) has a trade-off between acquisition time and spatial resolution. Temporally coded SL can produce a 3D reconstruction with high density, yet it is not applicable to dynamic reconstruction.
Feifei Gu, Zhan Song, Zilong Zhao
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Opto-thermoelectric speckle tweezers
Nanophotonics, 2020 Opto-thermoelectric tweezers present a new paradigm for optical trapping and manipulation of particles using low-power and simple optics. New real-life applications of opto-thermoelectric tweezers in areas such as biophysics, microfluidics, and ...
Kotnala Abhay +2 more
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Diagnostics, 2022 The ultrasonic technique is an indispensable imaging modality for diagnosis of breast cancer in young women due to its ability in efficiently capturing the tissue properties, and decreasing nega-tive recognition rate thereby avoiding non-essential ...
Gelan Ayana +4 more
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Tailoring 3D Speckle Statistics [PDF]
, 2022 We experimentally generate three-dimensional speckles with customized intensity statistics. By modulating the phase front of a laser beam, far-field speckle patterns maintain the designed intensity probability density function while evolving to different spatial patterns upon axial propagation. We also create speckles with distinct intensity statistics
arxiv +1 more source
Demonstration of a Speckle Based Sensing with Pulse-Doppler Radar for Vibration Detection
Sensors, 2018 In previous works, an optical technique for extraction and separation of remote static vibrations has been demonstrated. In this paper, we will describe an approach in which RF speckle movement is used to extract remote vibrations of a static target. The
Nisan Ozana +6 more
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Simulation of Laser Profilometer Measurements in the Presence of Speckle Using Perlin Noise
Sensors, 2023 In the manufacturing industry, inspection systems play a crucial role in ensuring product quality. High-resolution profilometric sensors have become increasingly popular for inspection due to their ability to provide detailed surface information. However,
Sara Roos-Hoefgeest +3 more
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Laser speckle reduction based on angular diversity induced by Piezoelectric Benders [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 Speckle reduction techniques have been investigated in display systems with coherent light sources. We propose a simple but efficient method to reduce speckle via two fast vibrating piezoelectric benders.
Ouyang G. +4 more
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A Contrast Calibration Protocol for X-ray Speckle Visibility Spectroscopy
Applied Sciences, 2021 X-ray free electron lasers, with their ultrashort highly coherent pulses, opened up the opportunity of probing ultrafast nano- and atomic-scale dynamics in amorphous and disordered material systems via speckle visibility spectroscopy.
Yanwen Sun +13 more
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