Results 111 to 120 of about 10,498 (267)

Efficient Optical Reflection Modulation by Coupling Interband Transition of Graphene to Magnetic Resonance in Metamaterials

open access: yesNanoscale Research Letters, 2019
Designing powerful electromagnetic wave modulators is required for the advancement of optical communication technology. In this work, we study how to efficiently modulate the amplitude of electromagnetic waves in near-infrared region, by the interactions
Yiqun Ji   +6 more
doaj   +1 more source

Fractional Effective Charges and Misner-Wheeler Charge without Charge Effect in Metamaterials

open access: yesPhotonics, 2016
Transformation optics enables engineering of the effective topology and dimensionality of the optical space in metamaterials. Nonlinear optics of such metamaterials may mimic Kaluza-Klein theories having one or more kinds of effective charges.
Igor Smolyaninov
doaj   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

An efficient closed-loop design framework for additive manufacturing of multiphysical metamaterials

open access: yesMaterials & Design
Achieving multifunctionality has long been a key objective in the development of functional materials. Metamaterials have emerged as a promising solution due to their exceptional ability to manipulate physical fields. However, current metamaterial design
Xiaochang Xing   +7 more
doaj   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

open access: yesAdvanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao   +4 more
wiley   +1 more source

Manipulating scattering features by metamaterials

open access: yesEPJ Applied Metamaterials, 2016
We present a review on manipulations of electromagnetic scattering features by using metamaterials or metasurfaces. Several approaches in controlling the scattered fields of objects are presented, including invisibility cloaks and radar illusions based ...
Lu Cui   +3 more
doaj   +1 more source

Numerical analysis of focusing by a metamaterial lens

open access: yes, 2008
Over the last several years there has been a surge of interest in artificial materials because of their potential to expand the range of electromagnetic properties in materials.
Russer, Peter   +2 more
core  

Electromagnetic Emergence in Metamaterials [PDF]

open access: yes, 2002
This chapter focuses on the emergent electromagnetic properties in such heterogeneous materials that are, in today’s discussion, being more and more often called “metamaterials.” More precisely, the very concept of metamaterial is under study as also are the preconditions under which such a term is appropriate.
openaire   +1 more source

2D Materials Empowered Radar Absorbing Materials: A Review

open access: yesAdvanced Electronic Materials, EarlyView.
Recent progress in 2D materials empowered radar absorbing materials (RAMs) is reviewed, highlighting four key structural design strategies that enhance electromagnetic wave absorption. Porous structures, heterogeneous interfaces, printed metamaterials, and tunable metasurfaces are compared in terms of their governing physics, fabrication complexity ...
Yujie Zhong   +4 more
wiley   +1 more source

Planar designs for electromagnetically induced transparency in metamaterials

open access: yesOptics Express, 2009
11 pages, 8 ...
Tassin, Philippe   +4 more
openaire   +4 more sources

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