Results 71 to 80 of about 56,406 (306)

Circular Dichroism and Cross Polarization Conversion Using Chiral Metasurface

IEEE Open Journal of Antennas and Propagation
This paper presents a novel dual-mode chiral metasurface (CM) designed to achieve strong circular dichroism (CD) in both transmission and reflection mode within the Ku-band.
Muhammad Noman, Hattan Abutarboush, Khurram K. Qureshi, Adnan Zahid, Farooq A. Tahir, Muhammad Imran, Qammer H. Abbasi   +6 more
doaj   +1 more source

A Polarimetric Phased Array Antenna for E-SAR in L-Band [PDF]

, 2006
The design of a new L-band antenna for DLR’s airborne synthetic aperture radar system (E-/F-SAR) is presented. Beside operations in L-band new components for a system upgrade were developed. These components are intro-duced.
Bachmann, Markus, Gabler, Bernd, Horn, Ralf, Limbach, Markus   +3 more
core  

On isometric full embeddings of symplectic dual polar spaces into Hermitian dual polar spaces

Linear Algebra and its Applications, 2009
Let \({\mathbb K}'\), \({\mathbb K}\) be (finite or infinite) fields such that \({\mathbb K}'\) is a quadratic Galois extension of \({\mathbb K}\) and let \(\theta\) denote the unique nontrivial element in \(\text{Gal}({\mathbb K}'/{\mathbb K})\). The dual polar space \(DW(2n-1,{\mathbb K})\), \(n\geq\,2\), has up to equivalence a unique isometric full
openaire   +2 more sources

Valuations and hyperplanes of dual polar spaces

Journal of Combinatorial Theory, Series A, 2005
In einer früheren Arbeit haben die beiden Autoren auf die Bedeutung von so genannten Bewertungen bei der Klassifikation von near polygons hingewiesen. In der vorliegenden Arbeit werden solche Bewertungen bei dualen Polarräumen untersucht. \textit{P. J. Cameron} hat in [Geom.
Bart De Bruyn, Pieter Vandecasteele
openaire   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Design and simulation of a novel circularly polarized antenna with polarization reconfigurable characteristics

MATEC Web of Conferences, 2016
A novel circularly polarized antenna with polarization reconfigurable characteristics was designed using co-simulation of Ansoft HFSS and Designer software. It consists of a dual-polarized antenna and phase switching network which act as the feed network
Zhang Hai, Zhang Wei Guo, Ge Yue He, Lv Shan Ce   +3 more
doaj   +1 more source

Off-body wireless link simulation framework using deterministic channel modeling [PDF]

, 2014
Body-centric communication concerns wireless links in which the human body represents the central element, exchanging data by means of wearable antennas with a different node in the external environment or on the human body itself. During the link design
Rogier, Hendrik, Vallozzi, Luigi
core   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Diversity textile antenna systems for firefighters [PDF]

, 2010
Off-body communication systems are valuable to improve the security of rescue workers by allowing them to transmit vital information collected by sensors. As rescue workers often work in indoor environments characterized by many obstructions, non line-of-
Rogier, Hendrik, Vallozzi, Luigi, Van Torre, Patrick, Verhaevert, Jo   +3 more
core  

A Self‐Dual Polar Factorization for Vector Fields [PDF]

Communications on Pure and Applied Mathematics, 2012
AbstractWe show that any nondegenerate vector field u in \documentclass{article} \usepackage{mathrsfs} \usepackage{amsmath, amssymb} \pagestyle{empty} \begin{document} \begin{align*}L^{\infty}(\Omega, \mathbb{R}^N)\end{align*} \end{document}, where Ω is a bounded domain in \documentclass{article} \usepackage{mathrsfs} \usepackage{amsmath, amssymb ...
Ghoussoub, Nassif, Moameni, Abbas
openaire   +3 more sources