Results 91 to 100 of about 6,802,009 (374)

An experimental study to discriminate between the validity of diffraction theories for off-Bragg replay

, 2014
We show that experiments clearly verify the assumptions made by the first-order two-wave coupling theory for one dimensional lossless unslanted planar volume holographic gratings using the beta-value method rather than Kogelnik's K-vector closure method.
A.M. López, B.W. Batterman, C.J.R. Sheppard, C.V. Raman, F. Kahmann, G. Montemezzani, H. Kogelnik, H. Rauch, H. Rauch, J. Klepp, J. Klepp, J. Klepp, J. Klepp, J.T. Sheridan, K. Sutter, L. Solymar, M. Fally, M. Fally, M. Fally, M. Fritzenwanker, M.G. Moharam, M.G. Moharam, N. Suzuki, N. Uchida, P. Phariseau, P. Yeh, P.P. Ewald, P.S.J. Russell, R.R.A. Syms, R.R.A. Syms, R.R.A. Syms, T.K. Gaylord, V. Somenkov, V.F. Sears, Y. Tomita   +34 more
core   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

Advanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi, Hiroyuki Awano, Kenji Tanabe   +2 more
wiley   +1 more source

Dynamic holographic interferometry using a Bi12SiO20 photorefractive crystal and monomode optical fibres [PDF]

, 1993
Dynamic holographic interferometry using polarization preserving opticai fibres as light guides and incorporating a photorefractive Bi12SiO20 (BSO) crystal as the recording medium is described.
Hobson, PR, Potter, J, Spooncer, RC
core  

Polarization volume grating with high efficiency and large diffraction angle.

Optics Express, 2016
We propose a polarization volume grating (PVG), which exhibits nearly 100% diffraction efficiency and large diffraction angle. Both reflective and transmissive PVGs can be configured depending on application preference.
Yishi Weng, Daming Xu, Yuning Zhang, Xiaohua Li, Shin‐Tson Wu   +4 more
semanticscholar   +1 more source

Novel Tailoring of Ternary ZnS‐MXene‐TiO2 Nanocomposite Heterojunction and Its Tunable Electrochemical Properties With Enhanced Photocatalytic Degradation

Advanced Engineering Materials, EarlyView.
ZnS‐MXene‐TiO2 nanocomposite heterojunction for photocatalytic decomposition of this methylene blue dye (MB) greatly improves light absorption, charge separation, and active site area. Two‐dimensional MXene forms nanocomposites by easily combining them with 0D (quantum dots), 1D (tube and wire), 2D (plane and sheet), and 3D (particle and lamellar ...
Latiful Kabir, Dohyun Kim, Minho Song, Jae Doc Na, Young Jun Joo, Kwang Youn Cho, Karna Wijaya, Won‐Chun Oh   +7 more
wiley   +1 more source

Holographic Photopolymerizable Glass: Enhancing Exposure Sensitivity by Tailoring Photoinitiating Systems Based on BODIPY Dyes

Advanced Photonics Research
The photoinitiating system (PIS) is a key component of holographic materials which needs to be carefully selected and optimized to achieve efficient photopolymerization and, as a result, highly efficient holographic structures.
Tatsiana Mikulchyk, Aimee Sheehan, Metodej Dvoracek, Izabela Naydenova, Mikhail A. Filatov   +4 more
doaj   +1 more source

Dynamics of Fermionic Four-Wave Mixing

, 2002
We study the dynamics of a beam of fermions diffracted off a density grating formed by fermionic atoms in the limit of a large grating. An exact description of the system in terms of particle-hole operators is developed.
A.F. Bernhardt, A.G. Rojo, A.G. Truscott, B. DeMarco, B.W. Shore, C. McKenzie, C. P. Search, C.P. Search, E.A. Donley, F. Schreck, G. Lenz, G. Lenz, G. Roati, H. Christ, I.D. Abella, J. Denschlag, J.M. Vogels, K.E. Strecker, L. Deng, L. Khaykovich, M. Kozuma, M. Kozuma, M.G. Moore, P. Meystre, P. Villain, P.J. Martin, R. Wynar, S. Burger, S. Inouye, S. Inouye, W. Ketterle, Y. Torii, Z. Hadzibabic   +32 more
core   +1 more source

Diffractive efficiency improvement of diffractive cylinder lenses by Gaussian-beam illumination

Optics Express, 1997
To maximize the diffraction efficiency of cylinder lenses with high numerical apertures (such as F/0.5 lenses) we use an iterative algorithm to determine the optimum field distribution in the lens plane. The algorithm simulates the free-space propagation between the lens and the focal plane applying the angular spectrum of plane waves. We show that the
F, Fuerer, M, Schmidt, O, Bryngdahl
openaire   +2 more sources

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source