Results 91 to 100 of about 128,637 (311)

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

A 40 Gb/s indoor optical wireless system enabled by a cyclically arranged optical beamsteering receiver [PDF]

, 2018
Indoor optical wireless communication with optical beamsteering capability is currently attracting a lot of attention. One major two-dimensional (2D) optical beamsteering scheme is realized by 2D grating or its active counterpart, which is usually based ...
Li, Fan, Zhaohui Li, Ismaeel, R., Liu, Yu, R. Ismaeel, Chen, Y., Yu Liu, A. M. J. Koonen, Brambilla, G., Zhang, Xuebing, G. Brambilla, Li, Zhaohui, Cao, Zizheng, Zizheng Cao, Xuebing Zhang, Y. Chen, Fan Li, Koonen, A.M.J.   +17 more
core   +1 more source

Reply to Comment on ‘No circular birefringence exists in a chiral medium: an analysis of single-mode refraction’

New Journal of Physics
Based on their finding that the circularly polarized Beltrami fields are solutions to their eigenvalue equation (7), the authors of preceding Comment claim that the linearly polarized basis is inapplicable to light waves in an isotropic chiral medium. We
Zhi-Juan Hu, Chun-Fang Li
doaj   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Rapid rotation of micron and submicron dielectric particles measured using optical tweezers

, 2003
We demonstrate the use of a laser trap (‘optical tweezers’) and back-focal-plane position detector to measure rapid rotation in aqueous solution of single particles with sizes in the vicinity of 1 μm.
Berry, RM, Leake, Mark C., Rowe, Alexander D., Morgan, Hywel, Rowe, AD, Berry, Richard, Morgan, H., Leake, MC, Berry, Richard M., Berry, R.M., Leake, M.C., Morgan, H, Rowe, A.D., Leake, Mark   +13 more
core   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Optical trapping with a perfect vortex beam

, 2014
The authors would like to thank the UK Engineering and Physical Sciences Research Council (EPSRC) for funding.Vortex beams with different topological charge usually have different profiles and radii of peak intensity.
Arita, Yoshihiko, Ewan M. Wright, Wright, Ewan M., Michael Mazilu, Chen, Mingzhou, Mazilu, Michael, Dholakia, Kishan, Yoshihiko Arita, Mingzhou Chen, Kishan Dholakia   +9 more
core   +1 more source

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source

Computation for polarizer's optimal rotation angle on airborne optical platform

, 2011
The rotation angle of a mounted polarizer in front of a camera has a direct effect on imaging quality and therefore this paper presents a rapid computation method for a polarizer's optimal rotation angle on an airborne optical platform.
Shi ZL(史泽林), Feng B(冯斌), Ding QH(丁庆海), Yu XR(余新荣)   +3 more
core  

All-optical sampling exploiting nonlinear polarization rotation in a single semiconductor optical amplifier

, 2012
An all-optical sampling scheme using a single semiconductor optical amplifier is proposed for analog signal processing. The analog optical signal is sampled by the probe pulse train through the nonlinear polarization rotation arising in the semiconductor
Zhang, S., Yongzhi Liu, Liu, Yongzhi, Shangjian Zhang, Liu, Y., Yong Liu, Harm J.S. Dorren, Dorren, H.J.S.   +7 more
core   +1 more source