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Related papers: Comment on "Guiding, Focusing, and Sensing on the …

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This study presents a novel mechanical metallic reflector array to guide wireless signals to the point of interest, thereby enhancing received signal quality. Comprised of numerous individual units, this device, which acts as a linear…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Hieu Le , Oguz Bedir , Jian Tao , Sabit Ekin , Mostafa Ibrahim

I outline the prospects for performing weak lensing studies with the new generation of radio telescopes that are coming online now and in the future. I include a description of a proposed technique to use polarization observations in radio…

Cosmology and Nongalactic Astrophysics · Physics 2012-06-21 Michael L Brown

In this paper we present the electromagnetic modeling and beam pattern measurements of a 16-elements ultra wideband sparse random test array for the low frequency instrument of the Square Kilometer Array telescope. We discuss the importance…

Instrumentation and Methods for Astrophysics · Physics 2018-01-10 E. de Lera Acedo , P. Bolli , F. Paonessa , G. Virone , E. Colin-Beltran , N. Razavi-Ghods , I. Aicardi , A. Lingua , P. Maschio , J. Monari , G. Naldi , M. Piras , G. Pupillo

Reply to the Comment on "Unified Formulism of Andreev Reflection at a Ferromagnetic/Superconductor Interface" by Eschrig et al

Superconductivity · Physics 2013-02-12 T. Y. Chen , C. L. Chien

Transmission through sub-wavelength apertures in perfect metals is expected to be strongly suppressed. However, by structural engineering of the apertures, we numerically demonstrate that the transmission of transverse electric waves…

Optics · Physics 2010-03-12 Sanshui Xiao , Liang Peng , Niels Asger Mortensen

This is a comment on "Strong Measurements Give a Better Direct Measurement of the Quantum Wave Function" which was published as PRL 116, 040502 (2016). We show that there is crucial normalization error in this Letter which invalidates the…

Quantum Physics · Physics 2017-11-03 Varad R. Pande , Som Kanjilal , Debmalya Das

In media with strong spatial dispersion the electric displacement vector and the electric field are typically linked by a partial differential equation in the bulk region. The objective of this work is to highlight that in the vicinity of…

Computational Physics · Physics 2015-06-05 João T. Costa , Mário G. Silveirinha

Rigourous calculations of the imaging properties of metamaterials consisting of metal-coated semiconductor nanoparticles are presented. In particular, it is shown that under proper choice of geometric and materials parameters, arrays of…

Materials Science · Physics 2008-02-13 Vassilios Yannopapas

The publication by Gagunashvili [arXiv:1011.0662] suffers from several caveats: i) The method is based upon the false assumption that the median of chi square distributed random variables is chi square distributed. ii) The information…

Data Analysis, Statistics and Probability · Physics 2012-09-11 G. Bohm , G. Zech

We have made measurements of microwave transmission over the 12 - 18 GHz range and through a simple metamaterial exhibiting a negative index of refraction. The metamaterial consisted of an array of wires cladded in dielectric embedded in a…

Applied Physics · Physics 2019-08-06 Mohamed Zein Radwan , Graeme Dewar

Several practical implementations of the THz wire waveguides are proposed combining the low-loss, low group velocity dispersion and simplicity of excitation of the two-wire metal waveguide with the ease of manufacturing, possibility of…

Optics · Physics 2012-06-15 Andrey Markov , Stephan Gorgutsa , Hang Qu , Maksim Skorobogatiy

Perfect lensing using negative refractive index materials and radiationless electromagnetic interference both provide extreme subwavelength focusing by "amplifying" evanescent wave components that are usually lost. This paper provides a…

Optics · Physics 2015-06-03 Reuven Gordon

In a recent comment [1], Masud Mansuripur presented some concerns with theoretical and experimental interpretations of She's paper [2], and concluded that She's conclusion is incorrect. We agree that, some of the She's work required further…

Optics · Physics 2009-07-28 Huakang Yu , Wei Fang , Limin Tong

The investigation presented by Doiron, Hache, and Winful [Phys. Rev. A 76, 023823 (2007)] is not valid for the tunneling process as claimed in the paper.

Quantum Physics · Physics 2008-01-15 G. Nimtz , A. A. Stahlhofen

Planar dielectric subwavelength waveguides are proposed as waveguides for THz radiation. The waveguide porous design maximizes the fraction of power guided in the air to avoid the complexity that all the materials are highly absorbent in…

Optics · Physics 2011-12-22 A. Markov , A. Mazhorova , B. Ung , H. Minamide , Y. Wang , H. Ito , M. Skorobogatiy

In this work, we theoretically study temporal interfaces between media with strong spatial dispersion and dielectrics. In particular, we consider a temporal discontinuity that transforms a wire medium sample, a metamaterial with resonant…

Fiber-based endoscopes utilizing multi-core fiber (MCF) bundles offer the capability to image deep within the human body, making them well-suited for imaging applications in minimally invasive surgery or diagnosis. However, the optical…

We demonstrate that an array of metallic nanorods enables sub-wavelength (near-field) imaging at infrared frequencies. Using an homogenization approach, it is theoretically proved that under certain conditions the incoming radiation can be…

Materials Science · Physics 2015-06-25 Mario G. Silveirinha , Pavel A. Belov , Constantin R. Simovski

We analytically describe light transmission through a single subwavelength slit in a thin perfect electric conductor screen for the incident polarization being perpendicular to the slit, and derive simple, yet accurate, expressions for the…

In this paper, a spatially dispersive finite-difference time-domain (FDTD) method to model wire media is developed and validated. Sub-wavelength imaging properties of the finite wire medium slabs are examined. It is demonstrated that the…

Optics · Physics 2009-11-11 Yan Zhao , Pavel A. Belov , Yang Hao