Acoustoplasmonic resonators, such as nanobars and crosses, are efficient acousto-optical transducers. The excitation of mechanical modes in these structures strongly depends on the spatial profile of the eigenmodes of the resonator. Using a system of two identical gold elongated bars placed on a silicon dioxide substrate, we examine how breaking mirror symmetries affects the optical and acoustic properties to provide insights in the design of acoustoplasmonic metasurfaces for nonsymmetric acousto-optical transducers. Our findings show that the absence of mirror symmetries affects differently the optical and nanomechanical response. Broken mirror symmetries not only couple nanomechanical modes existing in single bars but introduce new torsional resonant modes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11744449 | PMC |
| http://dx.doi.org/10.1515/nanoph-2024-0482 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Coupled acoustoplasmonic resonators: the role of geometrical symmetries.
Nanophotonics
January 2025
Instituto de Micro y Nanotecnología IMN-CNM, CSIC, CEI UAM+CSIC, Tres Cantos, Spain.
Acoustoplasmonic resonators, such as nanobars and crosses, are efficient acousto-optical transducers. The excitation of mechanical modes in these structures strongly depends on the spatial profile of the eigenmodes of the resonator. Using a system of two identical gold elongated bars placed on a silicon dioxide substrate, we examine how breaking mirror symmetries affects the optical and acoustic properties to provide insights in the design of acoustoplasmonic metasurfaces for nonsymmetric acousto-optical transducers.
View Article and Find Full Text PDFInterocular astigmatic symmetry: A systematic review.
Cont Lens Anterior Eye
January 2025
Department of Optics and Optometry and Vision Sciences, University of Valencia, 46100 Burjassot, Spain.
Purpose: The objective of this investigation was to consolidate the extant data pertaining to interocular astigmatic symmetry, with a view to discerning any patterns that may emerge from the research.
Methods: A systematic literature review was conducted in accordance with the PICO framework. The search, conducted through September 2024, included three databases (PubMed, Web of Science, and Scopus) and the reference list of the selected articles, which were identified from inception.
Emergent superconductivity driven by Van Hove singularity in a Janus MoPS monolayer.
Phys Chem Chem Phys
January 2025
School of Physics and Electronics, Hunan University, Changsha 410082, China.
Two-dimensional (2D) Janus structures with the breaking of out-of-plane mirror symmetry can induce many interesting physical phenomena, and have attracted widespread attention. Herein, we propose a MoPS monolayer with mirror asymmetry, identified by first-principles structural search calculations, which demonstrates high thermodynamic and dynamic stability. Our findings reveal that Mo 4d-orbitals dominate the metallicity, significantly enhancing the density of states near the Fermi level due to Van Hove singularities (VHSs), leading to the existence of phonon-mediated superconductivity.
View Article and Find Full Text PDFThe canonical deep neural network as a model for human symmetry processing.
iScience
January 2025
Division of Optometry, Health Sciences, City University of London, London EC1V 0HB, UK.
A key property of our environment is the mirror symmetry of many objects, although symmetry is an abstract global property with no definable shape template, making symmetry identification a challenge for standard template-matching algorithms. We therefore ask whether Deep Neural Networks (DNNs) trained on typical natural environmental images develop a selectivity for symmetry similar to that of the human brain. We tested a DNN trained on such typical natural images with object-free random-dot images of 1, 2, and 4 symmetry axes.
View Article and Find Full Text PDFTwisting nanoporous graphene on graphene: electronic decoupling and chiral currents.
Nano Lett
January 2025
Donostia International Physics Center (DIPC), E-20018 Donostia-San Sebastián, Spain.
Nanoporous graphene (NPG), laterally bonded carbon nanoribbons, is a promising platform for controlling coherent electron propagation in the nanoscale. However, for its successful device integration NPG should ideally be on a substrate that preserves or enhances its anisotropic transport properties. Here, using an atomistic tight-binding model combined with nonequilibrium Green's functions, we study NPG on graphene and show that their electronic coupling is modulated as a function of the interlayer twist angle.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!