Results 121 to 130 of about 40,382 (313)

Enhancement of Weldability at Laser Beam Welding of 22MnB5 by an Entrained Ultrasonic Wave Superposition. [PDF]

Materials (Basel), 2022
Wolf C, Völkers S, Kryukov I, Graß M, Sommer N, Böhm S, Wunder M, Köhler N, Mäckel P.   +8 more
europepmc   +1 more source

Electrical Transport of Nb‐Doped MoS2 Homojunction P–N Diode: Investigating NDR and Avalanche Effect

Small, EarlyView.
Niobium (Nb)‐doped molybdenum disulfide (MoS2) p‐type–n‐type (p–n) homojunction diodes are engineered using thickness‐controlled homo‐interfaces. Current–voltage (I–V) characteristics reveal gate‐tunable rectification, wavelength‐dependent photoresponse, and low‐bias switching.
Ehsan Elahi, Umer Ahsan, Muhammad Farooq Khan, Jamal Aziz, Payal Chauhan, Paweł Piotr Michałowski, Yuan Chen, Goki Eda, Martin Loula, Kalyan Jyoti Sarkar, Zdenek Sofer   +10 more
wiley   +1 more source

Influence of adjustable ring modes on molten pool behavior and microstructure of Al–Si coated boron steel in fiber laser welding

Journal of Materials Research and Technology
The influence of adjustable ring modes on the phase transition and microstructural evolution in conduction mode laser welding of Al–Si coated boron steel was investigated.
Hyun-Uk Jun, Jooyong Cheon, Yeong-Do Park, Yang-Do Kim, Changwook Ji   +4 more
doaj   +1 more source

Influence of Beam Speed on Residual Stresses in the Vicinity of Laser Welds [PDF]

, 2014
Nikolaj Ganev, Kamil Kolařík, Zdeněk Pala, S. Němeček, Jiří Čapek   +4 more
openalex   +1 more source

Electrospun PAN Membrane Loaded with AgInP2Se6 Nanosheets for Triboelectric Energy Harvesting

Small, EarlyView.
Exfoliated AgInP2Se6 nanosheets are incorporated into a polyacrylonitrile (PAN) polymer matrix by electrospinning and applied for the first time in a triboelectric nanogenerator (TENG). The hybrid membrane delivers strong electrical output and exhibits reversible humidity sensitivity, responding rapidly to changes in relative humidity.
Filipa M. Oliveira, Jiri Sturala, Bing Wu, Latifah Alrabie, Vojtěch Kundrát, Jakub Zalesak, Ana I. S. Neves, Monica F. Craciun, Rui Gusmão, Zdeněk Sofer, Evgeniya Kovalska   +10 more
wiley   +1 more source

Marangoni driven turbulence in high energy surface melting processes

, 2016
Experimental observations of high-energy surface melting processes, such as laser welding, have revealed unsteady, often violent, motion of the free surface of the melt pool.
Kenjereš, Saša, Kidess, Anton, Kleijn, Chris R., Righolt, Bernhard W.   +3 more
core   +1 more source

To Dye or Not to Dye: Unraveling the Impact of Surface Chemistry on Cerium Oxide Nanoparticles–Cell Interactions

Small Science, EarlyView.
Fluorescent dye labeling enables nanoparticle imaging but may subtly alter their surface chemistry and biological behavior. This study compares dye‐labeled and unlabeled cerium oxide nanozymes, revealing changes in cellular uptake kinetics without affecting their final intracellular fate. Combined fluorescence and label‐free electron microscopy imaging
Kanika Dulta, Thu Ngan Dinhová, Marie Hubálek Kalbáčová, Xiaohui Ju   +3 more
wiley   +1 more source

Laser Micromachining for Bioelectronics: Past, Present, and Future

Small Methods, EarlyView.
Lasers offer a straightforward, flexible, and versatile route to the manufacture of bioelectronic devices, with distinct advantages over alternatives such as photolithography and printing. The key aspects of a laser when considering their use in bioelectronics fabrication are discussed in this review, and the development of laser micromachining within ...
J. G. Troughton, C. M. Proctor
wiley   +1 more source

Additive Manufacturing of Hot‐Work Tool Steel by In Situ Alloying Using Laser Powder Bed Fusion and Directed Energy Deposition—Strategies to Improve Chemical Homogeneity

steel research international, EarlyView.
To support future alloy development a powder mixture is processed by laser additive manufacturing. The powder mixture containing Mo‐ and W‐rich tracers is processed by powder bed fusion using single and double laser exposure and by directed energy deposition which provides drastically enlarged melt pools.
Felix Großwendt, Sebastian Weber, Jonathan Lentz   +2 more
wiley   +1 more source

Numerical Analysis of Molten Pool Dynamic Behaviors during High-Speed Oscillation Laser Welding with Aluminum Alloy

Metals
Increased welding speeds are often used to achieve high welding efficiency. However, welding defects, including pores and humps, can easily be formed under high-speed welding conditions.
Yuewei Ai, Yachao Yan, Shibo Han
doaj   +1 more source