Results 21 to 30 of about 172,628 (261)

Lifetime Measurement of Cesium Atoms Using a Cold Rydberg Gas

Applied Sciences, 2022
The lifetimes of nS1/2 and nD5/2 (n = 60–83) cesium Rydberg states are measured accurately in a magneto-optical trap using the field ionization technique and analyzed with the existing theoretical model. The room temperature blackbody radiation (BBR) and
Rong Song, Jingxu Bai, Yuechun Jiao, Jianming Zhao, Suotang Jia   +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

Design and implementation of a TDLAS methane detection system based on FPGA

Dianzi Jishu Yingyong
Tunable Diode Laser Absorption Spectroscopy (TDLAS) is widely applied in gas concentration measurements due to its high sensitivity. However, its detection performance is often limited by laser stability and the signal processing capability of the lock ...
Zhang Yanqun, Jing Wanyang, Su Dianqiang, Ji Zhonghua, Ma Weiguang, Zhao Yanting   +5 more
doaj   +1 more source

Electronic energy transfer in single conjugated polymer molecules revealed by phase-modulated pulse-pair controlled single molecule spectroscopy

AIP Advances, 2021
Detailed understanding of the electronic energy transfer dynamics in conjugated polymer molecules and their conformation dependence is central for improving the photophysical properties as well as the performance of devices based on conjugated polymers ...
Ruiyun Chen, Yao Li, Wenling Guan, Guofeng Zhang, Chengbing Qin, Jianyong Hu, Liantuan Xiao, Suotang Jia   +7 more
doaj   +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

Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis

Applied Sciences, 2020
A fast and highly sensitive polymer nano-mechanical thermal analysis method for determining the melting temperature (Tm) of polymer microwires was proposed.
Shangzhi Li, Bo Sun, Zhijin Shang, Biao Li, Ruyue Cui, Hongpeng Wu, Lei Dong   +6 more
doaj   +1 more source

Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap

Photonics, 2022
Parametric modulation is an effective tool to measure the trap frequency and investigate the atom dynamics in an optical dipole trap or lattices. Herein, we report on experimental research of parametric resonances in an optical dipole trap. By modulating
Ningxuan Zheng, Wenliang Liu, Jizhou Wu, Yuqing Li, Vladimir Sovkov, Jie Ma   +5 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Observation of non-adiabatic non-Abelian braiding of matter waves

Nature Communications
Non-Abelian braiding operations, a fundamental mechanism for implementing topological quantum gate operations, have recently been simulated using classical acoustic and photonic waves.
Jin Xie, Bo-Wen Guan, Jiang Zhang, Chenhao Wang, Liantuan Xiao, Suotang Jia, Yanting Zhao, Feng Mei   +7 more
doaj   +1 more source

Low‐Temperature Imidization of Polyimides (PI) for Scalable Manufacturing of Flexible Wearable Electronics

Advanced Engineering Materials, EarlyView.
Low‐temperature imidization of PEG‐modified polyimide enables fully screen‐printed, roll‐to‐roll fabrication of flexible electrodes on PET substrates, delivering robust mechanical durability and reliable ECG/EMG signal performance for wearable electronics.
Akib Abdullah Khan, Jong‐Hoon Kim
wiley   +1 more source