| Tunable reflectance spectra of multilayered cholesteric photonic structures with anisotropic defect layers. | |
| | |
MedLine Citation:
|
PMID: 20365757 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
In this paper, we investigate the spectral characteristics of normal incident light reflected by a multilayered structure composed of an alternated sequence of single-pitch cholesteric liquid-crystal (ChLC) and anisotropic layers. Using the Berreman 4x4 matrix formalism, we numerically obtain the reflection spectrum and the chromaticity diagram as a function of the anisotropic layers thickness d. For d-->0 , the structure behaves like a single ChLC layer, showing a single reflection band. As the anisotropic layer thickness increases, the reflection band shifts toward high-wavelength spectral regions, while new reflection bands appear. As a consequence, the reflection chromaticity continuously changes with d . It is observed that a suitable choice of the anisotropic layer thickness can produce a threefold reflection band with a red-green-blue associated color for both polarized and unpolarized incident lights. |
| | |
Authors:
|
E M Nascimento; F M Zanetti; M L Lyra; I N de Oliveira |
Related Documents
:
|
2373797 - Monaural envelope correlation perception, revisited: effects of bandwidth, frequency se... 9637037 - Evidence for an across-frequency, between-channel process in asymptotic monaural tempor... 12633367 - Light transport through the band-edge states of fibonacci quasicrystals. 21535137 - Forward and backward adaptive effects in global flash multifocal electroretinogram stim... 20382037 - Cues for self-recognition in point-light displays of actions performed in synchrony wit... 19296717 - Upper-room ultraviolet light and negative air ionization to prevent tuberculosis transm... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-03-26 |
Journal Detail:
|
Title: Physical review. E, Statistical, nonlinear, and soft matter physics Volume: 81 ISSN: 1550-2376 ISO Abbreviation: Phys Rev E Stat Nonlin Soft Matter Phys Publication Date: 2010 Mar |
Date Detail:
|
Created Date: 2010-04-06 Completed Date: 2010-07-14 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101136452 Medline TA: Phys Rev E Stat Nonlin Soft Matter Phys Country: United States |
Other Details:
|
Languages: eng Pagination: 031713 Citation Subset: IM |
Affiliation:
|
Instituto de Física, Universidade Federal de Alagoas, Maceió, AL 57072-970, Brazil. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Anisotropy Cholesterol / chemistry* Computer Simulation Liquid Crystals / chemistry* Models, Chemical* Photons Refractometry / methods* |
| Chemical | |
Reg. No./Substance:
|
57-88-5/Cholesterol |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evolution of a rare sequence of surface transitions with temperature and film thickness.
Next Document: Kinetics of director gliding on a polymer-liquid-crystal interface.