Results 51 to 60 of about 2,694,501 (323)
Controlled nonuniformity in macroporous silicon pore growth [PDF]
, 2005 Photoelectrochemical etching of uniform prestructured silicon wafers in hydrofluoric acid containing solutions yields periodic structures that can be applied to two- and three-dimensional photonic crystals or microfluidics.
Gösele, Ulrich +2 more
core +1 more source
Direct observation of topological edge states in silicon photonic crystals: Spin, dispersion, and chiral routing [PDF]
Science Advances, 2018 We directly observe the spin, dispersion, and guiding of topological states in photonic crystals. Topological protection in photonics offers new prospects for guiding and manipulating classical and quantum information.
N. Parappurath +3 more
semanticscholar +1 more source
Two-Dimensional Ferroelectric Photonic Crystals: Optics and Band Structure [PDF]
, 2013 In this report we present an investigation of the optical properties and band structure calculations for the photonic structures based on the functional materials- ferroelectrics. A theoretical approach to the optical properties of the 2D and 3D photonic
Mamedov, Amirullah M. +2 more
core +2 more sources
Tamm states and nonlinear surface modes in photonic crystals [PDF]
, 2006 We predict the existence of surface gap modes, known as Tamm states for electronic systems, in truncated photonic crystals formed by two types of dielectric rods. We investigate the energy threshold, dispersion, and modal symmetries of the surface modes,
Anderson +22 more
core +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 +8 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 +3 more
doaj +1 more source
Deterministic Detection of Single Ion Implantation
Advanced Engineering Materials, EarlyView.Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead +6 more
wiley +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 +2 more
doaj +1 more source
Time-resolved broadband analysis of slow-light propagation and superluminal transmission of electromagnetic waves in three-dimensional photonic crystals [PDF]
, 2004 A time-resolved analysis of the amplitude and phase of THz pulses propagating through three-dimensional photonic crystals is presented. Single-cycle pulses of THz radiation allow measurements over a wide frequency range, spanning more than an octave ...
A. Farré Benet +10 more
core +3 more sources
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