Results 101 to 110 of about 29,331 (339)

Optimizing structured surfaces for diffractive waveguides

Nature Communications
We introduce universal diffractive waveguide designs that can match the performance of conventional dielectric waveguides and achieve various functionalities.
Yuntian Wang, Yuhang Li, Tianyi Gan, Kun Liao, Mona Jarrahi, Aydogan Ozcan   +5 more
doaj   +1 more source

Phase retrieval by coherent modulation imaging

Nature Communications, 2016
Robust coherent diffractive imaging generally requires many exposures that may damage samples. Here, the authors develop a single-shot X-ray imaging method applicable to general samples for materials and biological sciences, also enabling imaging of ...
Fucai Zhang, Bo Chen, Graeme R. Morrison, Joan Vila-Comamala, Manuel Guizar-Sicairos, Ian K. Robinson   +5 more
doaj   +1 more source

Multiwavelength Achromatic Metasurfaces by Dispersive Phase Compensation

, 2015
The replacement of bulk refractive optical elements with diffractive planar components enables the miniaturization of optical systems. However, diffractive optics suffers from large chromatic aberrations due to the dispersion of the phase accumulated by ...
Aieta, Francesco, Capasso, Federico, Genevet, Patrice, Kats, Mikhail A.   +3 more
core   +1 more source

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Broadband lightweight flat lenses for longwave-infrared imaging

, 2019
We experimentally demonstrate imaging in the longwave-infrared (LWIR) spectral band (8um to 12um) using a single polymer flat lens based upon multi-level diffractive optics.
Banerji, Sourangsu, Majumder, Apratim, Meem, Monjurul, Menon, Rajesh, Sensale-Rodriguez, Berardi, Vasquez, Fernando Guevara   +5 more
core  

X-ray crystallographic studies of RoAb13 bound to PIYDIN, a part of the Nterminal domain of C-C chemokine receptor 5: Long peptide Sample 4 diffraction images

, 2021
Helliwell, John
openalex   +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

Two-photon imaging with diffractive optical elements

Frontiers in Neural Circuits, 2009
Two-photon imaging has become a useful tool for optical monitoring of neural circuits, but it requires high laser power and serial scanning of each pixel in a sample.
Brendon O Watson, Volodymyr Nikolenko, Rafael Yuste   +2 more
doaj   +1 more source

Nonlinear ptychographic coherent diffractive imaging

Optics Express, 2016
Ptychographic Coherent diffractive imaging (PCDI) is a significant advance in imaging allowing the measurement of the full electric field at a sample without use of any imaging optics. So far it has been confined solely to imaging of linear optical responses.
Odstrcil, Michal, Baksh, Peter, Gawith, Corin, Vrcelj, Ranko M., Frey, Jeremy, Brocklesby, William   +5 more
openaire   +6 more sources