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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

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

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

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

Towards three-dimensional optical metamaterials

open access: yesNano 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
doaj   +1 more source

Increasing the stability margins using multi-pattern metasails and multi-modal laser beams

open access: yesScientific Reports, 2022
Laser-driven metasails can enable reaching velocities far beyond the chemically propelled spacecrafts, which accounts for precise engineering of the acceleration and the stability degree of the lightsail across the Doppler-broadened band.
Mohammadrasoul Taghavi   +1 more
doaj   +1 more source

CORE-SHELL MODELLING OF AUXETIC INORGANIC MATERIALS

open access: yesTASK Quarterly, 2014
This paper investigates the suitability of the General Utility Lattice Program (GULP) for studying auxetic materials at the molecular level. GULP is a force-field based molecular modelling package which incorporates the ‘core-shell’ model for simulating
VICTOR ZAMMIT   +3 more
doaj   +1 more source

A Point-of-Care Testing Device Utilizing Graphene-Enhanced Fiber Optic SPR Sensor for Real-Time Detection of Infectious Pathogens

open access: yesBiosensors, 2023
Timely detection of highly infectious pathogens is essential for preventing and controlling public health risks. However, most traditional testing instruments require multiple tedious steps and ultimately testing in hospitals and third-party laboratories.
Shiyu Jiang   +12 more
doaj   +1 more source

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