Results 111 to 120 of about 378,095 (341)

Diffraction Efficiency Adjustment to Record High Quality Color Holograms

open access: yesIngeniería y Ciencia, 2015
In this article, we report the experimental values of required exposure to obtain the maximum diffraction efficiencies in PFG-03C Slavich film on independent recordings and RGB multiplexed recordings.
D Velásquez, L M Giraldo
doaj   +1 more source

LiVO3/LiZnVO4 Nanocomposite: High Performance Electrocatalyst for Ambient Nitrogen Reduction to Ammonia

open access: yesAdvanced Engineering Materials, EarlyView.
Lithium‐mediated electrocatalysis enables sustainable N2 fixation but hindered by parasitic Li deposition. An oxide‐oxide nanocomposite (LiVO3/LiZnVO4) structurally integrates lithium into active sites, suppressing plating and enhancing N2 activation and HER supression.
Naina Goyal   +4 more
wiley   +1 more source

Diffraction efficiencies of holographic transmission gratings in the region 80–1300 eV [PDF]

open access: green, 1980
J. P. Delvaille   +7 more
openalex   +1 more source

Direct Recycling of Cold Work Tool Steel Swarf into New Cutting Disks via Field‐Assisted Sintering

open access: yesAdvanced Engineering Materials, EarlyView.
Through a sintering method known as field‐assisted sintering technology/spark plasma sintering, cold work tool steel swarf can be directly recycled into new cutting disks. This method is capable of densifying the unconventional powder morphology of swarf, and it can also seal grinding contaminants, such as Al2O3, into the steel matrix.
Monica Keszler   +4 more
wiley   +1 more source

Development of SiC Nanocomposites Using Direct Ink Writing Process

open access: yesAdvanced Engineering Materials, EarlyView.
Herein, feedstock inks containing polycarbosilane and various concentrations of SiC nanoparticles (SiCnp) are investigated for fabricating ceramic matrix composites using a DIW 3D printing process. Characterization results from physical measurement, microstructure analysis, and thermal and flexural testing suggested that high‐performance CMC samples ...
Jinchen Han   +5 more
wiley   +1 more source

Phase-locked sustainment of photorefractive holograms using phase conjugation [PDF]

open access: yes, 1991
A method for sustaining multiply exposed photorefractive holograms, in a phase-locked fashion, by using a pair of phase-conjugating mirrors is described.
Gu, Claire   +5 more
core  

Diffraction efficiency analysis for multi-level diffractive optical elements [PDF]

open access: yes, 1995
Passive optical components can be broken down into two main groups: Refractive elements and diffractive elements. With recent advances in manufacturing technologies, diffractive optical elements are becoming increasingly more prevalent in optical systems. It is therefore important to be able to understand and model the behavior of these elements.
openaire   +3 more sources

Efficient and Scalable Radiative Cooling for Photovoltaics Using Solution‐Processable and Solar‐Transparent Mesoporous Nanoparticles

open access: yesAdvanced Functional Materials, EarlyView.
Graded refractive index (GRI) structures are prepared from the layer‐by‐layer spray coating of the mesoporous SiO2 nanoparticles, showing high solar transparency and thermal emissivity. Under outdoor conditions, after 50 days, the GRI‐coated photovoltaics show on average 6.65 ± 1.48 °C lower than that of the non‐coated references, maintaining 80.9 ± 8 ...
Heesuk Jung   +14 more
wiley   +1 more source

Exploiting atomic layer deposition for fabricating sub-10 nm X-ray lenses

open access: yes, 2018
Moving towards significantly smaller nanostructures, direct structuring techniques such as electron beam lithography approach fundamental limitations in feature size and aspect ratios.
Belkhou, Rachid   +14 more
core   +1 more source

A Study on Length Traceability and Diffraction Efficiency of Chromium Gratings

open access: yesPhotonics
Measurement traceability is a prerequisite for achieving accurate and reliable results as well as technical standardization. The period of Chromium (Cr) gratings fabricated by atomic lithography can be directly traced back to natural constants.
Lihua Lei   +8 more
doaj   +1 more source

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