Results 31 to 40 of about 25,478 (173)

Inducible fluorescent speckle microscopy [PDF]

, 2016
The understanding of cytoskeleton dynamics has benefited from the capacity to generate fluorescent fiducial marks on cytoskeleton components. Here we show that light-induced imprinting of three-dimensional (3D) fluorescent speckles significantly improves
António J. Pereira, Axelrod, Bakhoum, Bjarneson, Brust-Mascher, Brust-Mascher, Brust-Mascher, Buster, Charlebois, Dainty, Danuser, Danuser, Duncan, Goodman, Goodman, Goshima, Goshima, Helder Maiato, Hu, Maddox, Margolis, Matos, Medeiros, Mendoza, Michael Belsley, Minden, Mitchison, O’Neill, Paulo Aguiar, Pereira, Pereira, Rogers, Saxton, Theriot, Wandke, Wang, Waterman-Storer, Weil, Wolf, Yang   +39 more
core   +2 more sources

Quantitative modeling of laser speckle imaging [PDF]

, 2006
We have analyzed the image formation and dynamic properties in laser speckle imaging (LSI) both experimentally and with Monte-Carlo simulation. We show for the case of a liquid inclusion that the spatial resolution and the signal itself are both ...
Alfred Buck, Andreas Völker, Bandyopadhyay, Boas, Briers, Bruno Weber, Cheng, Dunn, Durduran, Durian, Frank Scheffold, Heckmeier, Pavel Zakharov, Prahl, Schätzel, Völker, Weber, Zimnyakov   +17 more
core   +3 more sources

Comparison of laser speckle contrast imaging with laser Doppler for assessing microvascular function [PDF]

, 2011
Objective: To compare the inter-day reproducibility of post-occlusive reactive hyperaemia (PORH) and sympathetic vasomotor reflexes assessed by single-point laser Doppler flowmetry (SP-LDF), integrating-probe LDF (IP-LDF) and laser speckle contrast ...
Briers, J. David, Crank, Helen, Hodges, Gary J., Klonizakis, Markos, Tew, Garry A.   +4 more
core   +1 more source

Multiexposure laser speckle contrast imaging of the angiogenic microenvironment [PDF]

Journal of Biomedical Optics, 2011
We report the novel use of laser speckle contrast imaging (LSCI) at multiple exposure times (meLSCI) for enhanced in vivo imaging of the microvascular changes that accompany angiogenesis. LSCI is an optical imaging technique that can monitor blood vessels and the flow therein at a high spatial resolution without requiring the administration of an ...
Abhishek, Rege, Kartikeya, Murari, Alan, Seifert, Arvind P, Pathak, Nitish V, Thakor   +4 more
openaire   +2 more sources

Multi-exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array [PDF]

, 2015
A system has been developed in which multi-exposure Laser Speckle Contrast Imaging (LSCI) is implemented using a high frame rate CMOS imaging sensor chip. Processing is performed using a Field Programmable Gate Array (FPGA).
Hayes-Gill, Barrie R., He, Diwei, Morgan, Stephen P., Sun, Shen, Zhu, Yiqun   +4 more
core   +2 more sources

Investigation on Speckle-Free Imaging at the Output of a Multimode Fiber under Various Mode Excitation Conditions

Photonics, 2021
Speckle-free imaging using a multimode fiber has been widely used for imaging systems. Generally, previous work has assumed that all the propagating modes of the fiber are uniformly excited, but the modal power distribution is actually affected by ...
Jun Zhou, Zichun Le, Yanyu Guo, Zongshen Liu, Qiyong Xu, Yanxin Dai, Jiayu Deng, Jiapo Li, Di Cai   +8 more
doaj   +1 more source

Investigation of speckle pattern dynamics by laser speckle contrast imaging [PDF]

Biophotonics: Photonic Solutions for Better Health Care VI, 2018
Laser speckle contrast imaging (LSCI) is a simple and quite powerful method for visualization of flow, microcirculation and perfusion. In current study the speckle contrast variations towards breaking ergodicity conditions are considered with a final aim of envision a practical approach allowing real-time imaging of variations in dynamic properties of ...
Sdobnov, A. (Anton), Bykov, A. (Alexander), Popov, A. (Alexey), Zherebtsov, E. (Evgeny), Meglinski, I. (Igor)   +4 more
openaire   +3 more sources

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., Akram M. N., Wang K., Tong Z., Chen X. Y.   +4 more
doaj   +1 more source

A new simulation method for laser speckle imaging to investigate hemodynamics [PDF]

E3S Web of Conferences, 2019
Speckle simulation is a powerful protocol to investigate the properties of speckle and evaluate image processing method. However, only static speckle images can be simulated by available methods without considering time-integrated effect of CCD.
Sang X, Li D, Chen B
doaj   +1 more source

Zwitterion-doped liquid crystal speckle reducers for immersive displays and vectorial imaging

Light: Science & Applications, 2023
Lasers possess many attractive features (e.g., high brightness, narrow linewidth, well-defined polarization) that make them the ideal illumination source for many different scientific and technological endeavors relating to imaging and the display of ...
Yihan Jin, Nathan P. Spiller, Chao He, Grahame Faulkner, Martin J. Booth, Steve J. Elston, Stephen M. Morris   +6 more
doaj   +1 more source