Spiral-and meridian-patterned spheres self-assembled from block copolymer/homopolymer binary systems

W Xu, Z Xu, C Cai, J Lin, L Gao, H Qi, S Lin - Nanoscale, 2021 - pubs.rsc.org
Spiral nanostructures, mainly in the 2D form, have been observed in polymer self-assembly,
while well-defined 3D spirals are rarely reported. Here we report that a binary system …

Dyadic Green's function for the electrically biased graphene-based multilayered spherical structures

SH Raad, Z Atlasbaf, CJ Zapata-Rodríguez… - Journal of Quantitative …, 2020 - Elsevier
Dyadic Green's function for a multilayered spherical structure with alternating graphene-
dielectric shells is extracted in this paper. To this end, the unknown expansion coefficients of …

Electromagnetic radiation by antennas of arbitrary shape in a layered spherical media

SK Khamas - IEEE transactions on antennas and propagation, 2009 - ieeexplore.ieee.org
A unified method of moments model is developed for the analysis of arbitrarily shaped
antennas that are radiating next to a multilayered dielectric sphere. The curvilinear Rao …

Feed speed scheduling method for parts with rapidly varied geometric feature based on drive constraint of NC machine tool

Z Jia, L Wang, J Ma, K Zhao, W Liu - International Journal of Machine Tools …, 2014 - Elsevier
As the existence of rapidly varied geometric feature and during the NC manufacturing
process of this kind of parts, the actual moving speed of the workbench of the NC machine …

Circularly polarized dielectric resonator antenna excited by a conformal wire

SK Khamas - IEEE Antennas and Wireless Propagation Letters, 2008 - ieeexplore.ieee.org
A conformal spiral wire has been used to feed a dielectric resonator antenna to obtain a
circular polarization. The parameters of the spiral have been optimized numerically so that …

3-D conformal spiral antenna on elliptical cylinder surfaces for automotive applications

J de Mingo, C Roncal, PL Carro - IEEE Antennas and Wireless …, 2012 - ieeexplore.ieee.org
We propose a new 3-D conformal spiral antenna that is based on the standard equiangular
spiral geometry for automotive applications. The impact of its integration when it is placed …

Nanosecond multi-pulse laser milling for certain area removal of metal coating on plastics surface

K Zhao, Z Jia, J Ma, W Liu, L Wang - Optics and Lasers in Engineering, 2014 - Elsevier
Metal coating with functional pattern on engineering plastics surface plays an important role
in industry applications; it can be obtained by adding or removing certain area of metal …

A study on a miniaturized planar spiral antenna for partial discharge detection in GIS

Y Wang, J Li, C Li, B Ouyang… - MATEC Web of …, 2015 - matec-conferences.org
Ultra-high frequency (UHF) detection method can effectively detect the signals of partial
discharge (PD) in electrical equipment. Hence the authors designed a sensor of …

Theory and experiment of spherical aperture-coupled antennas

JS Meiguni, M Kamyab… - IEEE transactions on …, 2013 - ieeexplore.ieee.org
Rigorous mathematical method of moments (MoM) for analyzing spherical microstrip
aperture-coupled antennas is presented in this paper by using dyadic Green's functions …

Asymptotic extraction approach for antennas in a multilayered spherical media

SK Khamas - IEEE transactions on antennas and propagation, 2009 - ieeexplore.ieee.org
An efficient algorithm is introduced to enhance the convergence of dyadic Green's functions
(DGF) in a layered spherical media where asymptotic expressions have been developed …