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3篇 您的检索式:作者名="EDOUARD BERROCAL"
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1FRAME: femtosecond videography for atomic and molecular dynamics显示文摘Many important scientific questions in physics,chemistry and biology require effective methodologies to spectroscopically probe ultrafast intra-and inter-atomic/molecular dynamics.However,current methods that extend into the femtosecond regime are capable of only point measurements or single-snapshot visualizations and thus lack the capability to perform ultrafast spectroscopic videography of dynamic single events.Here we present a laser-probe-based method that enables two-dimensional videography at ultrafast timescales(femtosecond and shorter)of single,non-repetitive events.The method is based on superimposing a structural code onto the illumination to encrypt a single event,which is then deciphered in a post-processing step.This coding strategy enables laser probing with arbitrary wavelengths/bandwidths to collect signals with indiscriminate spectral information,thus allowing for ultrafast videography with full spectroscopic capability.To demonstrate the high temporal resolution of our method,we present videography of light propagation with record high 200 femtosecond temporal resolution.The method is widely applicable for studying a multitude of dynamical processes in physics,chemistry and biology over a wide range of time scales.Because the minimum frame separation(temporal resolution)is dictated by only the laser pulse duration,attosecondlaser technology may further increase video rates by several orders of magnitude.Andreas Ehn Joakim Bood Zheming Li Edouard Berrocal Marcus Aldén Elias Kristensson 2017Light(Science & Applications)2017,6,1:2
2Simultaneous multiple time scale imaging for kHz-MHz high-speed accelerometry显示文摘Fast transient events,such as the disintegration of liquid bodies or chemical reactions between radical species,involve various processes that may occur at different time scales.Currently,there are two alternatives for monitoring such events:burst-or high-speed imaging.Burst imaging at ultrahigh speeds(~100 MHz to THz)allows for the capture of nature's fastest processes but only for a narrowly confined period of time and at a repetition rate of~10 Hz.Monitoring long lasting,rapidly evolving transient events requires a significantly higher repetition rate,which is met by existing~kHz to 1 MHz high-speed imaging technology.However,the use of such systems eliminates the possibility to observe dynamics occurring on the sub-microsecond time scale.In this paper,we present a solution to this technological gap by combining multiplexed imaging with high-speed sensor technology,resulting in temporally resolved,high-spatial-resolution image series at two simultaneous time scales.We further demonstrate how the collection of such data opens up the tracking of rapidly evolving structures up to MHz burst rates over long durations,allowing,for the first time,to our knowledge,the extraction of acceleration fields acting upon the liquid bodies of an atomizing spray in two dimensions at k Hz frame rates.VASSILY KORNIENKO DAVID ANDERSSON MEHDI STITI JONAS RAVELID SIMON EK ANDREAS EHN EDOUARD BERROCAL ELIAS KRISTENSSON 2022Photonics Research2022,10,7:1
3Model validation image data for breakup of a liquid jet in crossflow: part I显示文摘David Sedarsky Megan Paciaroni Edouard Berrocal Per Petterson Joseph Zelina James Gord Mark Linne 2010Experiments in Fluids2010,,2:1
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