Results 51 to 60 of about 1,856,713 (355)

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Towards shaping picosecond strain pulses via magnetostrictive transducers

Photoacoustics, 2023
Using time-resolved x-ray diffraction, we demonstrate the manipulation of the picosecond strain response of a metallic heterostructure consisting of a dysprosium (Dy) transducer and a niobium (Nb) detection layer by an external magnetic field. We utilize
Maximilian Mattern, Jan-Etienne Pudell, Karine Dumesnil, Alexander von Reppert, Matias Bargheer   +4 more
doaj   +1 more source

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

Calibration-free picosecond LIPS for quantifying heavy metals in soils near Egyptian industrial sites

Scientific Reports
Excessive fertilizer and chemical usage have led to soil contamination by toxic heavy metals near the Abu-Zaabal industrial complex in Egypt. We introduce a groundbreaking calibration-free methodology using ultrafast Picosecond Laser-Induced Plasma ...
Mohamed El-Saeed, Walid Tawfik, Ahmed A. I. Khalil, Manal Mubarak, Mohamed Fikry   +4 more
doaj   +1 more source

Laser Fabrication and Comparative Study of Planoconcave and Planoconvex Microlenses on Fused Silica and Sapphire

Micromachines
We report on fabricating planoconcave lenses using a picosecond 355 nm wavelength laser and a CO2 laser. We also report the fabrication of the planoconvex microlens array on fused silica by patterned micromachining using a picosecond laser and reshaping ...
Narayana R. Gottumukkala, Caleb Barnes, Mool C. Gupta   +2 more
doaj   +1 more source

The influence of the excitation pulse length on ultrafast magnetization dynamics in nickel

Structural Dynamics, 2015
The laser-induced demagnetization of a ferromagnet is caused by the temperature of the electron gas as well as the lattice temperature. For long excitation pulses, the two reservoirs are in thermal equilibrium.
A. Fognini, G. Salvatella, R. Gort, T. Michlmayr, A. Vaterlaus, Y. Acremann   +5 more
doaj   +1 more source

A difference detection system for high precision measurements of ultrafast transmission changes [PDF]

, 1985
Ultrafast transmission changes can be recorded with high precision by means of a difference detection system. Using single pulses of low energy (0.1 nJ) and low repetition rate, variations of the transmitted energy induced by an excitation pulse are ...
H J Polland, Polland H J, W Zinth
core   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Neural network analysis of quasistationary magnetic fields in microcoils driven by short laser pulses

Scientific Reports, 2022
Optical generation of kilo-tesla scale magnetic fields enables prospective technologies and fundamental studies with unprecedentedly high magnetic field energy density.
Iu. V. Kochetkov, N. D. Bukharskii, M. Ehret, Y. Abe, K. F. F. Law, V. Ospina-Bohorquez, J. J. Santos, S. Fujioka, G. Schaumann, B. Zielbauer, A. Kuznetsov, Ph. Korneev   +11 more
doaj   +1 more source

Effect of surface plasmon on optical detection of picosecond ultrasonic pulses generated in aluminum nanofilms

Photoacoustics, 2023
Photoacoustic and thermoacoustic detection methods, including picosecond ultrasonic laser sonar based on metallic thin films, are widely used in industrial applications for their noninvasiveness.
Ting-Shan Lee, Chi-Kuang Sun
doaj   +1 more source