Results 111 to 120 of about 5,782,871 (345)

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Enhanced high harmonic efficiency through phonon-assisted photodoping effect

npj Computational Materials
High-harmonic generation (HHG) has emerged as a central technique in attosecond science and strong-field physics, providing a tool for investigating ultrafast dynamics.
Jin Zhang, Ofer Neufeld, Nicolas Tancogne-Dejean, I-Te Lu, Hannes Hübener, Umberto De Giovannini, Angel Rubio   +6 more
doaj   +1 more source

Local Dynamics of a Laser with Rapidly Oscillating Parameters

Моделирование и анализ информационных систем, 2013
The dynamics of class B lasers with the incoherent optical feedback formed by quickly vibrating external mirrors is viewed. The problem of the stability of equilibrium in a model system with rapidly oscillating coefficients is studied.
E. V. Grigorieva, S. A. Kaschenko
doaj   +1 more source

Positronium in intense laser fields

, 2003
The dynamics and radiation of positronium is investigated in intense laser fields.Comment: 13 pages, 3 ...
Hatsagortsyan, K. Z., Henrich, B., Keitel, C. H.   +2 more
core   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

Strongly driven quantum pendulum of the OCS molecule

, 2014
We demonstrate and analyze a strongly driven quantum pendulum in the angular motion of stateselected and laser aligned OCS molecules. Raman-couplings during the rising edge of a 50-picosecond laser pulse create a wave packet of pendular states, which ...
González-Férez, R., Kienitz, J. S., Küpper, J., Mullins, T., Müller, N. L. M., Omiste, J. J., Stapelfeldt, H., Trippel, S.   +7 more
core   +1 more source

Dynamic Laser Speckle Imaging [PDF]

, 2019
ABSTRACTUtilizing a high-speed camera and recording back-scattered laser light at more than 20,000 frames per second, we introduce the first wide-field dynamic laser speckle imaging (DLSI) in which we are able to quantify the laser speckleintensity temporal auto-correlation function g2(τ) for every pixel individually to obtain a quantitative image of ...
Postnov, Dmitry D., Tang, Jianbo, Erdener, Sefik Evren, Kılıç, Kıvılcım, Boas, David A.   +4 more
openaire   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Keyhole threshold and morphology in laser melting revealed by ultrahigh-speed x-ray imaging

Science, 2019
The key to keyhole formation The formation of keyholes, or vapor-filled depressions, during laser welding presents a large problem for additive manufacturing. Cunningham et al. used high-speed x-ray imaging to take a detailed look at keyhole formation in
Ross W Cunningham, Cang Zhao, N. Parab, C. Kantzos, J. Pauza, K. Fezzaa, T. Sun, A. Rollett   +7 more
semanticscholar   +1 more source

Nonthermal fragmentation of C60

, 2001
A theoretical study of the subpicosecond fragmentation of C60 clusters in response to ultrafast laser pulses is presented. We simulate the laser excitation and the consequent nonequilibrium relaxation dynamics of the electronic and nuclear degrees of ...
Akulin, Bonn, Campbell, Campbell, Graf, Graves, Haile, Harald O. Jeschke, Haug, Hunsche, J.A. Alonso, Jeschke, Kim, Knox, Martin E. Garcia, O'Brien, Reichardt, Reitze, Sawada, Silvestrelli, Slater, Sokolowski-Tinten, Tchaplyguine, Verlet, Weinert, Wentzcovitch, Xu, Xu   +27 more
core   +1 more source