Results 101 to 110 of about 20,337 (305)

Investigation of Ti65 Powder Spreading Behavior in Multi-Layer Laser Powder Bed Fusion

Applied Sciences
Powder bed fusion using a laser beam (PBF-LB) offers a suitable alternative to manufacturing Ti65 with intricate geometries and internal structures in hypersonic aerospace applications.
Zhe Liu, Ju Wang, Ge Yu, Xiaodan Li, Meng Li, Xizhong An, Jiaqiang Ni, Haiyang Zhao, Qianya Ma   +8 more
doaj   +1 more source

Off-Axis Gaussian Beams with Random Displacement in Atmospheric Turbulence [PDF]

Journal of Systemics, Cybernetics and Informatics, 2006
Our recent work in which we study the propagation of the general Hermite-sinusoidal-Gaussian laser beams in wireless broadband access telecommunication systems is elaborated in this paper to cover the special case of an off-axis Gaussian beam.
Yahya Baykal, Halil Eyyuboglu, Yusuf Yenice   +2 more
doaj  

Compensation of the "Pacman" tune spread by tailoring the beam current [PDF]

Proceedings Particle Accelerator Conference, 2002
"Factory"-like e/sup +/-e/sup -/-colliders presently under design or construction achieve high luminosity by resorting to large numbers of closely-spaced bunches. The short bunch spacing implies that there are unavoidable parasitic collisions (PCs) in the neighborhood of the interaction point (IP).
openaire   +2 more sources

Hot‐Film and Calorimetric Methods With Transient Heating for Measurement of High Biofluid Flow Rate

Advanced Functional Materials, EarlyView.
Accurate measurement of biofluid flow rate is vital for clinical diagnostics. We propose a transient heating strategy using short thermal pulses and peak temperature tracking to enhance the flow sensitivity of the hot‐Film and calorimetric methods. Simulations show how optimal heating time maximizes sensitivity across flow rates.
Yuanting Wei, Shupeng Li, Kyung Rok Pyun, Tianyu Yang, Bosung Kim, Haotian Yang, John A. Rogers, Yonggang Huang, Haohui Zhang   +8 more
wiley   +1 more source

Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints

Acta Polytechnica CTU Proceedings
Duplex stainless steels (DSS) are dual-phase alloys consisting of austenitic and ferritic phases in the microstructure. DSS provide an ideal compromise between mechanical properties and corrosion resistance.
Pavel Kovačócy, Maroš Martinkovič, Beáta Šimeková, Martin Hnilica, Ingrid Kovaříková, Jiří Macháček, Michal Krbaťa   +6 more
doaj   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Transmitted electron exposure in electron beam lithography for double-side patterning of bi-layer metasurfaces on a SiNx membrane

Micro and Nano Engineering
Metasheets, composed of two identical metasurfaces closely aligned to each other within a mode-coupling distance on the two opposite sides of a SiNx membrane, are of unique functionalities for effective modulation of electromagnetic waves by nanoscale ...
Jinyu Guo, Yifei Wang, Hao Quan, Shuoqiu Tian, Qiucheng Chen, Wentao Yuan, Qingxin Wu, Kangping Liu, Yifang Chen, Qiong He, Lei Zhou   +10 more
doaj   +1 more source

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

Advanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou, James FitzPatrick, Li Meng, Kateryna Shevchuk, Ahmad Najafi, Yury Gogotsi   +5 more
wiley   +1 more source

The Impact of Powder Delivery Process Parameters on Spreading Behaviour in Powder Bed Fusion Additive Manufacturing

Chemical Engineering Transactions
In this study, the effects of spreading speed and bed temperature on powder spreading in the Laser-Beam Powder Bed Fusion (PBF-LB) process were investigated. A purposely developed image analysis method was used to evaluate powder spread quality.
Bruno Nicola Dose, Sina Zinatlou Ajabshir, Ali Hassanpour, Diego Barletta, Massimo Poletto   +4 more
doaj  

Rhinomaxillary Mucormycosis Impersonating as Chronic Osteomyelitis: A Rare Case Report with Cone Beam Computed Tomography as Diagnostic Aid

Acta Medica Bulgarica
Rhinomaxillary mucormycosis (RMM) is one of the deadliest and quickly spreading types of fungal infection in humans which typically starts in the nose and paranasal sinuses.
Jain Y., Ajila V., Babu G.S., Madiyal A., Sivadas K S.   +4 more
doaj   +1 more source