Results 41 to 50 of about 2,429,627 (344)

Optimization of Photonic Nanocrystals for Invisibility Using Artificial Intelligence [PDF]

Journal of Advanced Materials in Engineering
Photonic 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
doaj   +1 more source

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, S.E. Kushnir, I.V. Roslyakov, A.E. Baranchikov, K.S. Napolskii   +4 more
doaj   +1 more source

Biomimetic Chiral Photonic Crystals.

Angewandte Chemie, 2019
Although it is well known that the amazing iridescent colors of the cuticle of beetles reflect the intricate nanoscale organization of bio-fibers, artificial inorganic materials with comparable optical responses have not yet been synthesized from abiotic
Jiawei Lv, Defang Ding, Xuekang Yang, Ke Hou, Xiang Miao, Dawei Wang, Baichuan Kou, Ling Huang, Zhiyong Tang   +8 more
semanticscholar   +1 more source

Photonic crystals for nano-light in moiré graphene superlattices [PDF]

Science, 2018
Twisting a route for surface plasmons Graphene is an atomically thin material that supports highly confined plasmon polaritons, or nano-light, with very low loss.
S. Sunku, G. Ni, B. Jiang, H. Yoo, A. Sternbach, McLeod Alexander, Stauber Tobias, L. Xiong, T. Taniguchi, Kenji Watanabe, P. Kim, M. Fogler, D. Basov   +12 more
semanticscholar   +1 more source

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, Hoi Chun Po, John D. Joannopoulos, Marin Soljačić   +3 more
doaj   +1 more source

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, T. F. Krauss, A. Di Falco   +2 more
doaj   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source

Simulation Design for Rutile-TiO2 Nanostructures with a Large Complete-Photonic Bandgap in Electrolytes

Crystals, 2012
The photonic bands of various TiO2 2D photonic crystals, i.e., cylindrical, square and hexagonal columns connected with/without walls and filled with acetonitrile, were investigated from the perspective of dye-sensitized solar cells.
Toshihiro Isobe, Akira Nakajima, Sachiko Matsushita, Mikiro Hayashi   +3 more
doaj   +1 more source

Pneumatic photonic crystals

Optics Express, 2010
We theoretically study a 1D elastic photonic crystal containing air voids as an opto-pneumatic medium. This medium is sensitive to weak deviations of the external pressure and, owing to its elasticity, can vary its geometry depending on the external conditions.
openaire   +2 more sources

Two-dimensional photonic crystals for engineering atom–light interactions [PDF]

Proceedings of the National Academy of Sciences of the United States of America, 2018
Significance Specialized 2D photonic crystals have been developed to interact with ultracold atoms, which are identical particles demonstrating quantum behavior both in their interaction with photons and in their motional degrees of freedom.
Su-Peng Yu, J. A. Muniz, Chen-Lung Hung, H. Kimble   +3 more
semanticscholar   +1 more source