Results 21 to 30 of about 14,199 (264)

SIMULATIONS OF THE PROPERTIES OF ELONGATED HEXAGONAL DODECAHEDRON SYSTEMS

open access: yesTASK Quarterly, 2014
This study considers a 3D basic unit-cell proposed for auxetic and non-auxetic foams namely the elongated hexagonal dodecahedron deforming through changes in angle between its ligaments (idealised hinging model). This structure was studied in detail for
JOSEPH N. GRIMA   +3 more
doaj   +1 more source

Adaptive Multichannel Terahertz Communication by Space-Time Shared Aperture Metasurfaces

open access: yesIEEE Access, 2020
We propose a technique for adaptive multichannel communication in the low-terahertz frequency regime through simultaneous and independent multifrequency multibeam scanning via a single time-modulated metasurface consisting of graphene micro-patch ...
Hooman Barati Sedeh   +2 more
doaj   +1 more source

Optical nonreciprocity via transmissive time-modulated metasurfaces

open access: yesNanophotonics, 2022
The frequency mixing property of time-modulated metasurfaces, attributed to the well-known phenomenon of temporal photonic transition, has led to several exotic functionalities in the last lustrum. Based on this concept, we demonstrate the possibility of
Barati Sedeh Hooman   +2 more
doaj   +1 more source

Superconducting metamaterials [PDF]

open access: yesApplied Physics Letters, 2005
Evanescent wave amplification has been predicted under the ideal condition that the index of refraction, n=−1+i0 precisely, but is difficult to observe in practice because current metamaterials suffer from high losses. We present experimental results on a metamaterial that employs superconducting Nb metals and low-loss dielectric materials.
Ricci, Michael   +2 more
openaire   +2 more sources

Up Scalable Full Colour Plasmonic Pixels with Controllable Hue, Brightness and Saturation

open access: yesScientific Reports, 2017
It has long been the interests of scientists to develop ink free colour printing technique using nano structured materials inspired by brilliant colours found in many creatures like butterflies and peacocks.
Renilkumar Mudachathi, Takuo Tanaka
doaj   +1 more source

Two-dimensional control of light with light on metasurfaces

open access: yesLight: Science & Applications, 2016
The ability to control the wavefront of light is fundamental to focusing and redistribution of light, enabling many applications from imaging to spectroscopy.
Maria Papaioannou   +4 more
doaj   +1 more source

Superconducting metamaterials [PDF]

open access: yesPhysics Reports, 2018
Metamaterials (MMs), i.e. artificial media designed to achieve properties not available in natural materials, have been the focus of intense research during the last two decades. Many properties have been discovered and multiple designs have been devised that lead to multiple conceptual and practical applications. Superconducting MMs have the advantage
Lazarides, N., Tsironis, G.P.
openaire   +2 more sources

Multiband terahertz metamaterial perfect absorber for microorganisms detection

open access: yesScientific Reports, 2023
We report a multi-resonant terahertz (THz) metamaterial perfect absorber (MPA)-based biosensor in the working frequency range of $$0 - 3.8 THz$$ 0 - 3.8 T H z for sensing of microorganisms (such as fungi, yeast) and wheat pesticides. Nearly $$100\%$$ 100
Ruchi Bhati, Anil K Malik
doaj   +1 more source

Coding Metamaterials, Digital Metamaterials and Programming Metamaterials

open access: yes, 2014
The correspondence E-mail: tjcui@seu.edu.cn.
Cui, Tie Jun   +4 more
openaire   +2 more sources

Spatio-temporal characterization of ultrashort vector pulses

open access: yesAPL Photonics, 2021
Ultrafast vectorially polarized pulses have found many applications in information and energy transfer owing mainly to the presence of strong longitudinal components and their space-polarization non-separability.
Apostolos Zdagkas   +3 more
doaj   +1 more source

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