Results 61 to 70 of about 3,715,768 (201)

Editorial on Optical Tweezers for the 15th Anniversary of Micromachines

Micromachines
The electric fields of tightly focused laser beams can be strong enough to apply appreciable force to microscopic objects, including biological entities such as cells, bacteria, and even viruses and biomolecules [...]
Mark Cronin-Golomb
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced 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

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

Advanced 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

Simple convergent-nozzle aerosol injector for single-particle diffractive imaging with X-ray free-electron lasers

Structural Dynamics, 2015
A major challenge in high-resolution x-ray free-electron laser-based coherent diffractive imaging is the development of aerosol injectors that can efficiently deliver particles to the peak intensity of the focused X-ray beam. Here, we consider the use of
R. A. Kirian, S. Awel, N. Eckerskorn, H. Fleckenstein, M. Wiedorn, L. Adriano, S. Bajt, M. Barthelmess, R. Bean, K. R. Beyerlein, L. M. G. Chavas, M. Domaracky, M. Heymann, D. A. Horke, J. Knoska, M. Metz, A. Morgan, D. Oberthuer, N. Roth, T. Sato, P. L. Xavier, O. Yefanov, A. V. Rode, J. Küpper, H. N. Chapman   +24 more
doaj   +1 more source

A Simple Model for the Fields of a Chirped Laser Pulse With Application to Electron Laser Acceleration

Frontiers in Physics, 2019
A simple model is introduced for the fields of a chirped laser pulse. As an application, dynamics of laser-acceleration of a single electron by the fields of a pulse, with a sin4 envelope, is investigated.
Yousef I. Salamin, Sergio Carbajo
doaj   +1 more source

Materials processing with tightly focused femtosecond vortex laser beams

, 2010
This letter is the first demonstration of material modification using tightly focused femtosecond laser vortex beams. Double-charge femtosecond vortices were synthesized with the polarization-singularity beam converter described in Ref and then ...
Shvedov, Vladlen G., Wieslaw Krolikowski, Cyril Hnatovsky, Krolikowski, Wieslaw, Rode, Andrei V., Vladlen G. Shvedov, Hnatovsky, Cyril, Andrei V. Rode   +7 more
core   +1 more source

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

Advanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin, Gloria R. Young, Francesca Tallia, Reece N. Oosterbeek, Shaaz Ghouse, Edward Spiers, Nupur Kohli, Tom Briggs, Marc Masen, Siwei Li, Ren‐Jei Chung, Jonathan R. T. Jeffers, Julian R. Jones   +12 more
wiley   +1 more source

Electron acceleration by exponentially chirped laser pulses

AIP Advances
Single-electron acceleration in vacuum by exponentially chirped plane-wave and tightly focused Gaussian laser pulses is investigated. Numerical calculations and particle-in-cell simulations, employing the chirped fields, demonstrate that GeV net energy ...
Yousef I. Salamin, Sergio Carbajo, Zhong-Peng Li, Qian Zhao, Jian-Xing Li   +4 more
doaj   +1 more source

Direct Electron Acceleration with Radially Polarized Laser Beams

Applied Sciences, 2013
In the past years, there has been a growing interest in innovative applications of radially polarized laser beams. Among them, the particular field of laser-driven electron acceleration has received much attention.
Michel Piché, Jean-Claude Kieffer, François Légaré, Thomas Brabec, Nicolas Thiré, Pierre-Louis Fortin, Bruno Schmidt, Alexandre April, Sylvain Fourmaux, Vincent Marceau, Stéphane Payeur, Charles Varin   +11 more
doaj   +1 more source

Laser welding for semiconductors

, 2023
International audienceSemiconductors were the only materials that couldn't be bonded using lasers, but a new solution taps compact nanosecond fiber sources emitting in the infrared (IR) domain.
Grojo, David, Sopeña, Pol
core