Listar INIT_Articles por autoría "85e4b96e-5f30-42fd-856e-5b98700ea18d"
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Mechanical Analogue of a Majorana Bound State
Wiley (2019)The discovery of topologically nontrivial electronic systems has opened a new age in condensed matter research. From topological insulators to topological superconductors and Weyl semimetals, it is now understood that some ... -
Metaclusters for the Full Control of Mechanical Waves
American Physical Society (2021)We present a new method for the control of waves based on inverse multiple scattering theory. Conceived as a generalization of the concept of metagrating, we call metaclusters to a finite set of scatterers whose position ...
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Multiple scattering theory of non-Hermitian sonic second-order topological insulators
(2019-10-25)Topological phases of sound enable unconventional confinement of acoustic energy at the corners in higher-order topological insulators. These unique states which go beyond the conventional bulk-boundary correspondence have ...
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Non-locality of the Willis coupling in fluid laminates
Elsevier B.V. (2022-02-04)The closed form expressions of the effective properties in periodic fluid laminates are derived thanks to the Padé approximation of the transfer matrix. A second-order Taylor expansion of the transfer matrix elements ... -
Nonreciprocal and even Willis couplings in periodic thermoacoustic amplifiers
American Physical Society (2021-11-10)hermoacoustic amplifiers are analyzed in the framework of nonreciprocal Willis coupling. The closed form expressions of the effective properties are derived, showing that an applied temperature gradient causes the appearance ...
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Nonreciprocal Thermal Material by Spatiotemporal Modulation
American Physical Society (2018)The thermal properties of a material with a spatiotemporal modulation, in the form of a traveling wave, in both the thermal conductivity and the specific heat capacity are studied. It is found that these materials behave ...
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Observation of two-dimensional acoustic bound states in the continuum
Springer Nature (2024-04-09)The design of devices based on acoustic or optical fields requires the fabrication of cavities and structures capable of efficiently trapping these waves. A special type of cavity can be designed to support resonances with ...
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Optomechanical Coupling Optimization in Engineered Nanocavities
Wiley (2024)In optomechanics, the interaction between light and matter is enhanced by engineering cavities where the electromagnetic field and the mechanical displacement are confined simultaneously within the same volume. This leads ...
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Robustness of conventional and topologically protected edge states in phononic crystal plates
American Physical Society (2018)Many efforts have been devoted to studying the robustness of topologically protected edge states in acoustics; however, the robustness of conventional edge states is rarely reported. In this work we theoretically ...
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Single and coupled Helmholtz resonators for low frequency sound manipulation
American Institute of Physics (2022-08-12)In this work, we use the finite element method to study the acoustic properties of single and coupled Helmholtz resonators (HRs). Each HR consists of a sphere drilled with one or several small openings. For a single HR, ...
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Strong spatial dispersion in time-modulated dielectric media
American Physical Society (2020)We present an effective medium description of time-modulated dielectric media. By taking the averaged fields over one modulation period, the relationship between them is derived, therefore defining the different ...
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Theory of holey twistsonic media
Springer Nature (2022-12-15)Rotating two overlapping lattices relative to each other produces the well known moiré interference patterns and has surprisingly led to strongly correlated superconductivity in twisted bilayer graphene. This seminal effect ...
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Topological States in Twisted Pillared Phononic Plates
Elsevier (2020-09-20)In recent years, the advances in topological insulator in the fields of condensed matter have been extended to classical wave systems such as acoustic and elastic waves. However, the quantitative robustness study of ...
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Topological vortex mode for flexural waves in pillared plates
Elsevier (2023)Localized topological modes with high robustness to various perturbations are receiving increasing attention. Recently, zero-order topological vortex modes have been designed in phononic structures, in analogy with ...
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Ultrathin Acoustic Parity-Time Symmetric Metasurface Cloak
American Association for the Advancement of Science (2019)Invisibility or unhearability cloaks have beenmade possible by using metamaterials enabling light or sound to flow around obstacle without the trace of reflections or shadows. Metamaterials are known for being flexible ...
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Valley Hall phases in kagome lattices
American Physical Society (2019)We report the finding of the analogous valley Hall effect in phononic systems arising from mirror symmetry breaking, in addition to spatial inversion symmetry breaking. We study topological phases of plates and spring-mass ...
