Results 61 to 70 of about 5,855,332 (282)

IDENTIFIKASI UNSUR NIKEL DENGAN TEKNIK LASER INDUCED PLASMA (LIP) [PDF]

open access: yes, 2004
The line spectral of Ni element has been obtained for high and low concentration using Laser Induced Plasma (LIP) method. Focusing of high power pulse laser without pre treatment on the sample generates the Ni plasma contributed to atomic emission.
Kulla, Irwanuddin H.   +2 more
core   +1 more source

Characterization of electron beam generated in ignitor-plasma interaction of shock ignition concept [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2015
Generally, laser ignitior parameters in shock ignition concept are above the threshold for laser-plasma instability and therefore are prompting the generation of fast electrons.
Somayeh Rezaei   +3 more
doaj  

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

open access: yesAdvanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali   +5 more
wiley   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

The Role of Pulse Energy On Laser Induced Secondary Plasma Generation [PDF]

open access: yes, 2005
An observation about the role of laser pulse energy on the secondary plasma generation has been point out. The plasma emission intensity as a function of laser pulse energy was detected by using a monochromator combined with photomultiplier tube.
Setia Budi, Wahyu
core   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan   +4 more
wiley   +1 more source

Ion acceleration in underdense plasmas by ultra-short laser pulses

open access: yesNew Journal of Physics, 2014
We report on the ion acceleration mechanisms that occur during the interaction of an intense and ultrashort laser pulse ( $I\lambda^{2}>10^{18} \text{W}\,\text{cm}^{-2}\,\mu \text{m}^{2}$ ) with an underdense helium plasma produced from an ionized gas ...
A Lifschitz   +7 more
doaj   +1 more source

Laser shaping and optimization of the laser-plasma interaction [PDF]

open access: yesAIP Conference Proceedings, 2001
The physics of energy transfer between the laser and the plasma in laser wakefield accelerators is studied. We find that wake excitation by arbitrary laser shapes can be parameterized using the total pulse energy and pulse depletion length. A technique for determining laser profiles that produce the required plasma excitation is developed. We show that
Spitkovsky, Anatoly, Chen, Pisin
openaire   +2 more sources

Materials‐Driven Additive Manufacturing for Electrical Machines: Qualification‐Oriented Design Beyond Geometric Freedom

open access: yesAdvanced Engineering Materials, EarlyView.
This perspective reframes additive manufacturing for electrical machines as a qualification‐limited materials and architecture design problem. It links process–structure–property–performance relationships to magnetic, conducting, dielectric, and thermal property windows, highlighting where AM can enable segmented magnetic circuits, permanent magnet ...
Dénes Fodor, Loránd Szabó
wiley   +1 more source

The Use of Spatially Multi-Component Plasma Structures and Combined Energy Deposition for High-Speed Flow Control: A Selective Review

open access: yesEnergies
This review examines studies aimed at the organization of energy (non-mechanical) control of high-speed flow/flight using spatially multi-component plasma structures and combined energy deposition.
Olga A. Azarova, Oleg V. Kravchenko
doaj   +1 more source

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