Results 251 to 260 of about 1,090,679 (278)

Diffraction by a screened chiral layer with a grating

International Conference on Mathematical Methods in Electromagnetic Theory, 2003
Polarization characteristics of the reflecting structure like a chiral layer combined with a dielectric layer, both in between a diffraction grating and a screen, are considered. Due to the analytical regularization procedure derived from the Riemann-Hilbert problem method, the correspondent diffraction vector problem is solved in the form available ...
S.B. Panin, A.Ye. Poyedinchuk
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Layered Chiral Spheres with Zero Backscattering

2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall), 2019
In this paper, zero backscattering by chiral objects when illuminated by an electromagnetic plane wave is investigated. For this a bi-isotropic chiral sphere coated with chiral metamaterial embedded in free space is considered. Self-duality cases satisfy for zero backscattering.
S. A. Hassnain, M. J. Mughal, Q. A. Naqvi   +2 more
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Prospects for Chiral Thin-Layer Chromatography

1988
The potential benefits arising from the development of robust and efficient methods for enantiomer separation by thin-layer chromatography (TLC) are discussed and the current state of the art in chiral TLC reviewed. The relative lack of progress in developing suitable chiral stationary phases (CSP s) for TLC of wide general applicability is noted and ...
I. D. Wilson, R. J. Ruane
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Thin boundary layers of chiral smectics

Calculus of Variations and Partial Differential Equations, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Chiral Separations by Thin-Layer Chromatography

1991
Recent progress in thin-layer chromatography (TLC) as a means for the separation of enantiomers is reviewed. The areas discussed include separations using ligand exchange, ion-pair, cyclodextrin and “Pirkle”-based chiral TLC systems. The use of these systems for the chromatographic separation of a variety of enantiomers is described and the robustness,
I. D. Wilson, T. D. Spurway, L. Witherow, R. J. Ruane, K. Longden   +4 more
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Layer-Scale Optical Chirality of Liquid-Crystalline Phases

Physical Review Letters, 2005
We present a model for the optical chirality of layered liquid-crystalline phases. The model demonstrates that uniform stacking of chiral layers can lead to significant collective optical rotation, even in the absence of a superlayer helix. We predict the optical rotation of the B2 phases of bent-core liquid crystals, which can have optical rotation as
L E, Hough, N A, Clark
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Intrinsic chirality of triple‐layered naphthalenophane and related graphs

Journal of Mathematical Chemistry, 1998
As more and more topologically complex molecules are being synthesized, topological techniques become increasingly important in understanding molecular structure. In particular, topology can be a powerful tool in the study of molecular chirality. While chemical chirality is determined on the basis of experimental evidence, we can define a molecular ...
Flapan, Erica, Forcum, Brian
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Depolarization properties of a periodic sequence of chiral and material layers

Journal of the Optical Society of America A, 2008
We consider the electromagnetic field due to the reflection and transmission of a plane wave by a bounded periodic structure containing chiral layers. The problem is solved using the 2x2-block-representation transfer-matrix formulation. The frequency and angular dependences of the reflection and transmission coefficients are given.
Vladimir R, Tuz, Vadim B, Kazanskiy
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Giant asymmetric transmission of circular polarization in layer-by-layer chiral metamaterials

Applied Physics Letters, 2013
In this paper, two kinds of bi-layered chiral metamaterials were proposed to enhance the asymmetric transmission effects for circular polarized electromagnetic waves which are only found in planar chiral metamaterials according to previous studies. It was found that the magnitude of the asymmetric transmission parameters mainly depends on the distances
Lin Wu, Zhenyu Yang, Yongzhi Cheng, Ming Zhao, Rongzhou Gong, Yu Zheng, Ji'an Duan, Xiuhua Yuan   +7 more
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Quasi-static analysis of scattering from a chiral-layered sphere in chiral metamaterial

Journal of Electromagnetic Waves and Applications, 2015
Quasi-static analysis of electromagnetic scattering from a layered sphere is presented in this paper. Three regions occupying sphere, layer and host medium are assumed to be of chiral metamaterial of different parameters. Fields in three regions are determined by using appropriate boundary conditions.
Abdul Salam, Aqeel Abbas Syed, Qaisar Abbas Naqvi   +2 more
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