Results 11 to 20 of about 14,234 (266)
AIP 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
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Nature 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
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Supertoroidal light pulses as electromagnetic skyrmions propagating in free space
Nature 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
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Toy model of harmonic and sum frequency generation in 2D dielectric nanostructures
Scientific 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
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Optics Letters, 2022 We study the dispersion of electromagnetic waves in a spatially dispersive metamaterial with Lorentz-like dependence of principal permittivity tensor components on the respective components of the wave vector performing the analysis of isofrequency contours. The considered permittivity tensor describes a triple non-connected wire medium.
D. Sakhno, E. Koreshin, P. Belov
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Electronically steered metasurface antenna
Scientific 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
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Metamaterials and imaging [PDF]
Nano Convergence, 2015 Resolution of the conventional lens is limited to half the wavelength of the light source by diffraction. In the conventional optical system, evanescent waves, which carry sub-diffraction spatial information, has exponentially decaying amplitude and therefore cannot reach to the image plane.
Kim, Minkyung, Rho, Junsuk
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Advanced 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
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TASK 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
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Towards three-dimensional optical metamaterials
Nano Convergence, 2017 Metamaterials have opened up the possibility of unprecedented and fascinating concepts and applications in optics and photonics. Examples include negative refraction, perfect lenses, cloaking, perfect absorbers, and so on.
Takuo Tanaka, Atsushi Ishikawa
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