Results 11 to 20 of about 38,934 (253)

Voltage-controlled spin-wave intermodal coupling in lateral ensembles of magnetic stripes with patterned piezoelectric layer

open access: yesAIP Advances, 2021
Here we report about the strain-tuned dipolar spin-wave coupling in the adjacent system of yttrium iron garnet stripes, which were strain-coupled with the patterned piezoelectric layer. Spatially-resolved laser ablation technique was used for structuring
A. A. Grachev   +3 more
doaj   +1 more source

Digital metamaterials [PDF]

open access: yesNature Materials, 2014
Balancing the complexity and the simplicity has played an important role in the development of many fields in science and engineering. As Albert Einstein was once quoted to say: 'Everything must be made as simple as possible, but not one bit simpler'. The simplicity of an idea brings versatility of that idea into a broader domain, while its complexity ...
Della Giovampaola, Cristian   +1 more
openaire   +3 more sources

Supertoroidal light pulses as electromagnetic skyrmions propagating in free space

open access: yesNature Communications, 2021
Topology in electromagnetic fields can lead to a range of intriguing and unexpected phenomena. Here the authors describe a family of supertoroidal light pulses that exhibit skyrmionic topological structure flying in free space.
Yijie Shen   +3 more
doaj   +1 more source

Toy model of harmonic and sum frequency generation in 2D dielectric nanostructures

open access: yesScientific Reports, 2021
Optical nonlinearities of matter are often associated with the response of individual atoms. Here, using a toy oscillator model, we show that in the confined geometry of a two-dimensional dielectric nanoparticle a collective nonlinear response of the ...
Jie Xu, Vassili Savinov, Eric Plum
doaj   +1 more source

Mechanical metamaterials

open access: yesReports on Progress in Physics, 2023
Abstract Mechanical metamaterials, also known as architected materials, are rationally designed composites, aiming at elastic behaviors and effective mechanical properties beyond (‘meta’) those of their individual ingredients—qualitatively and/or quantitatively.
Richard Craster   +3 more
openaire   +3 more sources

Electronically steered metasurface antenna

open access: yesScientific Reports, 2021
Mobile devices, climate science, and autonomous vehicles all require advanced microwave antennas for imaging, radar, and wireless communications. We propose a waveguide-fed metasurface antenna architecture that enables electronic beamsteering from a ...
Michael Boyarsky   +4 more
doaj   +1 more source

Flexible metamaterials for advanced photonics applications [PDF]

open access: yes, 2014
We present our recent results on the design, fabrication and applications of flexible metamaterials in the visible and near infrared range. In particular, we demonstrate broad angle spectral filtering for lab-on-fibre applications, the realisation of ...
Shen, Y.   +9 more
core   +1 more source

Plasmonic metamaterials [PDF]

open access: yesNanotechnology Reviews, 2013
Plasmonics and metamaterials have attracted considerable attention over the past decade, owing to the revolutionary impacts that they bring to both the fundamental physics and practical applications in multiple disciplines. Although the two fields initially advanced along their individual trajectories in parallel, they started to interfere with each ...
Yao Kan, Liu Yongmin
openaire   +3 more sources

Optical Manipulation of Nanoparticles: A Selective Excitation Approach Using Highly Focused Orbital Angular Momentum Beams

open access: yesAdvanced Photonics Research, 2023
Orbital angular momentum and polarization states of highly focused vector vortex beams can be engineered to selectively excite the desired multipoles in nanoparticles, making them ideal candidates for complex optical applications. A platform based on the
Mohammad Mojtaba Sadafi   +3 more
doaj   +1 more source

MECHANICAL PROPERTIES OF 2D FLEXYNE AND REFLEXYNE POLYPHENYLACETYLENE NETWORKS: A COMPARATIVE COMPUTER STUDIES WITH VARIOUS FORCE-FIELDS

open access: yesTASK Quarterly, 2015
Auxetic materials exhibit the very unusual property of becoming wider when stretched and narrower when compressed, – they have a negative Poisson’s ratio.
LARA TRAPANI   +3 more
doaj   +1 more source

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