Results 71 to 80 of about 4,208,561 (328)

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Efficient quantum random number generation via simultaneously detecting photons in temporal and spatial dimensions

Scientific Reports
Quantum random number generators (QRNGs) produce true random numbers with significant applications in quantum communication and numerical computation, where high-rate random number generation is critical.
Bingkun Wang, Jianyong Hu, Xingjian Li, Jianqiang Liu, Shuxiao Wu, Haizhen Li, Liwen Zhang, Changgang Yang, Zhixing Qiao, Ruiyun Chen, Guofeng Zhang, Chengbing Qin, Liantuan Xiao, Suotang Jia   +13 more
doaj   +1 more source

Large-area fabrication of low- and high-spatial-frequency laser-induced periodic surface structures on carbon fibers

, 2018
The formation and properties of laser-induced periodic surface structures (LIPSS) were investigated on carbon fibers under irradiation of fs-laser pulses characterized by a pulse duration $\tau$ = 300 fs and a laser wavelength $\lambda$ = 1025 nm.
Boehm, Anne V., Bonse, Jörn, Büttner, Tobias N., Gnecco, Enrico, Gräf, Stephan, Kunz, Clemens, Müller, Frank A., Naumann, Björn, Neumann, Christof, Turchanin, Andrey   +9 more
core   +1 more source

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

Advanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini, Lu Fang, Jacob Bons, Mohammad Humaun Kabir, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Laser spectroscopy of hyperfine structure in highly-charged ions: a test of QED at high fields

, 2007
An overview is presented of laser spectroscopy experiments with cold, trapped, highly-charged ions, which will be performed at the HITRAP facility at GSI in Darmstadt (Germany). These high-resolution measurements of ground state hyperfine splittings will
Beier L., Beiersdorfer A.L., Bohr V.F., Borneis A., D FA Winters, D M Segal, Gabrielse L., Itano J.J., Klaft S., Kluge T., Lamb Jr., M Vogel, Quint J., R C Thompson, Roth Ch., Seelig S., Shabaev A.N., Shabaev M., Vogel D.F.A., W Nörtershäuser, Wineland H.G., Winters A.M., Winters M.   +22 more
core   +1 more source

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source

Compressible Flow Exfoliation of Two‐Dimensional Nanomaterials: Insights Into Layer Separation Informed by Gas Dynamics

Advanced Engineering Materials, EarlyView.
This study elucidates the mechanism of compressible flow exfoliation for producing 2D hexagonal boron nitride (h‐BN). Fluid dynamics analysis reveals that acceleration‐driven aerodynamic shear forces, rather than shock waves alone, drive effective layer separation.
Md Farhadul Islam, Saeed Arabha, Ray Hixon, Reza Rizvi   +3 more
wiley   +1 more source

Observation of higher-order time-dislocation topological modes

Nature Communications
Topological dislocation modes resulting from the interplay between spatial dislocations and momentum-space topology have recently attracted significant interest.
Jia-Hui Zhang, Feng Mei, Yi Li, Ching Hua Lee, Jie Ma, Liantuan Xiao, Suotang Jia   +6 more
doaj   +1 more source

Multi-Quartz Enhanced Photoacoustic Spectroscopy with Different Acoustic Microresonator Configurations

Journal of Spectroscopy, 2015
Acoustic microresonators were added to the recently developed multi-QTF based QEPAS spectrophone to enhance the signal amplitude. Two kinds of “on-beam” configurations were experimentally investigated in detail.
Huadan Zheng, Xukun Yin, Lei Dong, Hongpeng Wu, Xiaoli Liu, Weiguang Ma, Lei Zhang, Wangbao Yin, Suotang Jia   +8 more
doaj   +1 more source

Stability Enhanced Online Powdery Cement Raw Materials Quality Monitoring Using Laser-Induced Breakdown Spectroscopy

IEEE Photonics Journal, 2017
Mastering the change of cement raw materials composition in real time has important significance to timely adjusting the proportion of raw materials and improving the quality of cement products.
Lei Zhang, Wangbao Yin, Lei Dong, Weiguang Ma, Liantuan Xiao, Suotang Jia   +5 more
doaj   +1 more source