Results 81 to 90 of about 5,256,570 (379)
Structurally Colored Physically Unclonable Functions with Ultra‐Rich and Stable Encoding Capacity
Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.This study reports a design strategy for generating bright‐field resolvable physically unclonable functions with extremely rich encoding capacity coupled with outstanding thermal and chemical stability. The optical response emerges from thickness‐dependent structural color formation in ZnO features, which are fabricated by physical vapor deposition ...
Abidin Esidir +8 more
wiley +1 more source
Dispersion in a Gas Filled Hollow Core Photonic Crystal Fiber
مجلة بغداد للعلوم, 2014 Hollow core photonic bandgap fibers provide a new geometry for the realization and enhancement of many nonlinear optical effects. Such fibers offer novel guidance and dispersion properties that provide an advantage over conventional fibers for various ...
Baghdad Science Journal
doaj +1 more source
Simple model of the density of states in 1D photonic crystal
, 2010 In this paper, we present a simple, yet versatile, analytical model of one-dimensional photonic crystal (1D PC). In our theoretical model, we take into account direction of propagation and therefore do not neglect anisotropic nature of photonic crystals.
Rudziński, Adam +2 more
core +1 more source
Exotic radiation from a photonic crystal excited by an ultra-relativistic electron beam [PDF]
, 2006 We report the observation of an exotic radiation (unconventional Smith-Purcell radiation) from a one-dimensional photonic crystal. The physical origin of the exotic radiation is direct excitation of the photonic bands by an ultra-relativistic electron ...
C. Kittel +15 more
core +3 more sources
Superradiance for Atoms Trapped along a Photonic Crystal Waveguide. [PDF]
Physical Review Letters, 2015 We report observations of superradiance for atoms trapped in the near field of a photonic crystal waveguide (PCW). By fabricating the PCW with a band edge near the D(1) transition of atomic cesium, strong interaction is achieved between trapped atoms and
A. Goban +6 more
semanticscholar +1 more source
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 +8 more
wiley +1 more source
, 2005 Optical microcavities based on zero-group-velocity surface modes in photonic crystal slabs are studied. It is shown that high quality factors can be easily obtained for such microcavities in photonic crystal slabs.
Joannopoulos J. D. +3 more
core +1 more source
Nanoscale quantum dot infrared sensors with photonic crystal cavity [PDF]
, 2006 We report high performance infrared sensors that are based on intersubband transitions in nanoscale self-assembled quantum dots combined with a microcavity resonator made with a high-index-contrast two-dimensional photonic crystal.
Annamalai, S. +7 more
core +1 more source
Reconfigurable topological photonic crystal [PDF]
, 2017 Topological insulators are materials that conduct on the surface and insulate in their interior due to non-trivial topology of the band structure. The edge states on the interface between topological (non-trivial) and conventional (trivial) insulators ...
M. Shalaev +3 more
semanticscholar +1 more source
Symmetry-protected topological photonic crystal in three dimensions [PDF]
Nature Physics, 2015 Crystal symmetries may protect single Dirac cones on the surface of a photonic crystal, creating a photonic analogue of a three-dimensional solid-state topological insulator.
Ling Lu +5 more
semanticscholar +1 more source