Results 21 to 30 of about 13,423 (265)
The development of infrared stealth technology based on photonic crystals [PDF]
Zhihui kongzhi yu fangzhen, 2023 The dielectric materials with different refractive index are periodically arranged according to a certain structure to form photonic crystals, which can control the photon transmission regularly.
JIN Bin, SUN Haiwen
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Optimization of Photonic Nanocrystals for Invisibility Using Artificial Intelligence [PDF]
Journal of Advanced Materials in EngineeringPhotonic crystals are structures that can control the propagation of light by creating periodic changes in the refractive index. These structures facilitate directing electromagnetic waves in specific directions and making objects invisible by creating a
Z. Dorrani
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Selenic acid anodizing of aluminium for preparation of 1D photonic crystals
Electrochemistry Communications, 2019 Anodizing of aluminium under oscillating conditions is a reproducible, scalable, and low-cost method for the preparation of one-dimensional photonic crystals with photonic band gaps in the visible and near-infrared regions. For this purpose, sulfuric and
A.I. Sadykov +4 more
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Advances in Physics: X, 2021 Topological photonics is an emerging field that attracts enormous interest for its novel ways to engineer the flow of light. With the help of topological protection, the surface modes of topological photonic systems have intriguing properties, such as ...
Jian-Wei Liu +6 more
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Spatiotemporal Photonic Crystals
Conference on Lasers and Electro-Optics, 2020 We study photonic systems periodic in both time and space - spatiotemporal photonic crystals, and find that their bandstructure contains both frequency and momentum bandgaps. When the two types of bandgaps coincide, anomalous bandstructure is observed.
Yonatan Sharabi +4 more
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Location and Topology of the Fundamental Gap in Photonic Crystals
Physical Review X, 2022 The fundamental, or first, band gap is of unmatched importance in the study of photonic crystals. Here, we address precisely where this gap can be opened in the band structure of three-dimensional photonic crystals.
Thomas Christensen +3 more
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High Efficiency Interface for Coupling Into Slotted Photonic Crystal Waveguides
IEEE Photonics Journal, 2011 We investigate the mechanism of coupling light into slotted photonic crystal waveguides. We identify two alternative approaches for improving the coupling efficiency, based on engineered mode dispersion and on resonant mechanisms.
M. G. Scullion +2 more
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Crystals, 2020 The past and present goal of photonic technology stems in the fine and arbitrary control of light propagation within miniaturized devices that can possibly integrate different functionalities [...]
Martella Daniele, Sara Nocentini
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Advanced Engineering Materials, EarlyView.Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali +5 more
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Advanced Functional Materials, EarlyView.We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim +6 more
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