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Metamaterials - Europe PMC

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Last Updated: 23 April 2022

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Electromagnetic forces in nanoparticles made of multilayer hyperbolic metamaterials.

We find three primary results about these sources: We can now show that the optical gradient force generated on a mHMM nanoparticle can be flexibly tailored, from pushing the particle to pulling it, or simply changing the incident angle of an illuminating plane light wave. We conclude that we could achieve a significant increase in vacuum friction coefficient by altering the filling factor of the rotating mHMMs nanoparticle.

Source link: https://europepmc.org/article/MED/35417892


Edible mechanical metamaterials with designed fracture for mouthfeel control.

To control mouthfeel sensory sensations, we developed a class edible mechanical metamaterial metamaterials with tailored fracture properties here. We first show how to produce and control the fracture anisotropy, the number of cracks, and the number of cracks using chocolate as a model material, before showing that these properties can be replicated in a mouthfeel experience. We'll continue to use topology optimization to help us develop edible metamaterials with maximally anisotropic fracture strength.

Source link: https://europepmc.org/article/MED/35352073


A label-free biomarkers detection platform relied on a bilayer long-wave infrared metamaterials BioNEMS sensor.

The proposed BioNEMS sensor is based on a bi-layer metamaterials system that can be adjusted by its wavelength. On the substrate, the present biosensor consists of a BioNEMS membrane coated by Complementary Split Ring Resonators and a sequence of Split Ring Resonators cells. As a result, the coupling strength of two separate metamaterial layers and thus the biosensor's electromagnetic response are adjusted. According to the published results, the proposed label-free biosensor's high potential for highly sensitive and precise molecule detections, disease diagnosis, as well as drug delivery tests for Lab-On-Chip systems show its promise for highly sensitive and accurate molecule detections, disease diagnosis, and drug delivery tests for Lab-On-Chip systems.

Source link: https://europepmc.org/article/MED/35299159


Rigidly flat-foldable class of lockable origami-inspired metamaterials with topological stiff states.

The creation of reconfigurable materials that can change their shape and properties by folding has inspired Origami crease patterns. We combine notions of kirigami and origami to create a rigidly foldable class of cellular metamaterials that can flat-fold and lock into many states that are stringent in multiple directions, including the deployment direction. Our metamaterials rigidly fold with one degree of freedom and can reconfigure into several flat-foldable and spatially lockable folding paths due to face contact. Topology and symmetry changes that give multidirectional stiffness are inherent in Locking under compression.

Source link: https://europepmc.org/article/MED/35383167


Design and optimization of three-dimensional composite multilayer cylindrical pentamode metamaterials for controlling low frequency acoustic waves.

In this paper, two multilayer composite pentamode metamaterials with low frequency and wide band gap are suggested in order to compare with traditional double-cone pentamode metamaterials. According to the first phononic band gap, the lower edge frequency, relative bandwidth, and figure of merit of the first phononic band gap can be reduced by up to 61. 4%, 10. 3%, and 40. 6%, respectively.

Source link: https://europepmc.org/article/MED/35379842


Predicting the eigenstructures of metamaterials with QR-code meta-atoms by deep learning.

Deep neural networks facilitate the conversion of metamaterial perfect absorbers, mainly by predicting the MPA structure from input absorption, which is usually determined by estimating the input absorption model. To predict and reverse design the eigenstructures by inputting designated eigenfrequencies, we suggest an MPA system with quick response time-code meta-atoms and design a novel DNN.

Source link: https://europepmc.org/article/MED/35363755


Magnonic Metamaterials for Spin-Wave Control with Inhomogeneous Dzyaloshinskii-Moriya Interactions.

We first establish magnonic Snell's rule for spin waves passing through an interface between two media mediums with differing dispersion profiles due to different Dzyaloshinskii-Moriya interactions in analogy to photonics. We discover that spin waves can experience complete internal reflection based on magnonic Snell's statute. Our findings show a wide field of spin wave manipulation for prospective magnonic applications.

Source link: https://europepmc.org/article/MED/35407277


Minimal non-abelian nodal braiding in ideal metamaterials

New topological phases and phenomena have risen to a critical area of condensed matter physics and material sciences. According to new studies, a braided colliding nodal pair can be stabilized in a multi-gap system with either PT or C_2z T symmetry. With the fewest band nodes, we design optimal acoustic metamaterials to produce non-abelian braiding here. In addition, we experimentally display the intricate relationship between the edge responses and the majority non-abelian charges. Our findings open the way for the development of non-abelian topological physics that is still in its infancy.

Source link: https://europepmc.org/article/PPR/PPR480708

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions