Results 41 to 50 of about 3,894,078 (297)

Technology of Creation Periodic Structure on Surface Crystal of Paratellurite [PDF]

Журнал нано- та електронної фізики, 2016
In this paper presents the artificial periodic structures, first obtained by method of anisotropic etching the surface of single-crystal of paratellurite. The technology of this method is in detail presented in relation to paratellurite.
S.A. Tretiakov, A.I. Kolesnikov, M.S. Vorontsov, A.I. Ivanova   +3 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Four-zone reflective polarization conversion plate [PDF]

, 2014
The work was partially funded by the Russian Foundation Basic Research grants ## 13-07-97008, 14-07-31092, and 14-07-97039, the Russian Federation Presidential grant for state support of young Russian scientists with Candidate's degree MK-4816.2014.2 ...
L. O'Faolain, Stafeev, S.S., Kotlyar, V.V., A. G. Nalimov, V. V. Kotlyar, S. S. Stafeev, Nalimov, A.G., O'Faolain, L.   +7 more
core   +1 more source

Optical twin-vortex multi-trapping by Kolakoski lenses

Scientific Reports
In this work, we design and implement a new bifocal diffractive spiral lens within an optical tweezers system. The proposed diffractive optical element coined Kolokaski Kinoform Spiral Lens (KKSL), generates twin optical vortices along the propagation ...
Arlen B. Perez-Hernández, Adrián Garmendía-Martínez, Walter D. Furlan, Juan C. Castro-Palacio, Juan A. Monsoriu, Francisco M. Muñoz-Pérez   +5 more
doaj   +1 more source

Ultrafast Airy Beam Generation with a Mode-Locked Fiber Laser

Photonics
We generate an ultrafast Airy beam with a mode-locked fiber laser. A diffractive optical element is placed inside the laser cavity and applies phase modulation on the pulses propagating in the cavity.
Silin Guo, Yajun Lou, Cai Yue, Xinhai Zhang, Fan Zhang   +4 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Tight focus of light using micropolarizer and microlens [PDF]

, 2015
Funding: European Research Council (ERC) (337508); Ministry of Education and Science of the Russian Federation (MK-4816.2014.2, NSh-3970.2014.9); Russian Foundation for Basic Research (14-07-31092, 14-07-97039, 14-29-07133, 15-07-01174).Using a binary ...
Stafeev, S.S., Kotlyar, V.V., O'Faolain, Liam, Nalimov, A.G.   +3 more
core   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

Advanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba, Sang‐Hyeok Lee, Christina Gasper, Martina Freund, Sandra Korte‐Kerzel, Ulrich Kerzel   +5 more
wiley   +1 more source

Cryptanalysis of optical security systems with significant output images [PDF]

, 2007
The security of the encryption and verification techniques with significant output images is examined by a known-plaintext attack. We introduce an iterative phase-retrieval algorithm based on multiple intensity measurements to heuristically estimate the ...
Guohai Situ, Situ, Guohai, Monaghan, David S., Unnikrishnan Gopinathan, John T. Sheridan, Gopinathan, Unnikrishnan, David S. Monaghan, Sheridan, John T.   +7 more
core   +1 more source