Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Observation of Ultra‐High‐Q Resonators in the Ultrasound via Bound States in the Continuum
The confinement of waves in open systems represents a fundamental phenomenon extensively explored across various branches of wave physics. Recently, significant attention is directed toward bound states in the continuum (BIC), a class of modes that are trapped but do not decay in an otherwise unbounded continuum. Here, the theoretical investigation and experimental demonstration of the existence of quasi‐bound states in the continuum (QBIC) for ultrasonic waves are achieved by leveraging an elastic Fabry–Pérot metasurface resonator. Several intriguing properties of the ultrasound quasi‐bound states in the continuum that are robust to parameter scanning are unveiled, and experimental evidence of a remarkable Q‐factor of 350 at ≈1 MHz frequency, far exceeding the state‐of‐the‐art using a fully acoustic underwater system is presented. The findings contribute novel insights into the understanding of BIC for acoustic waves, offering a new paradigm for the design of efficient, ultra‐high Q‐factor ultrasound devices.
Observation of Ultra‐High‐Q Resonators in the Ultrasound via Bound States in the Continuum
The confinement of waves in open systems represents a fundamental phenomenon extensively explored across various branches of wave physics. Recently, significant attention is directed toward bound states in the continuum (BIC), a class of modes that are trapped but do not decay in an otherwise unbounded continuum. Here, the theoretical investigation and experimental demonstration of the existence of quasi‐bound states in the continuum (QBIC) for ultrasonic waves are achieved by leveraging an elastic Fabry–Pérot metasurface resonator. Several intriguing properties of the ultrasound quasi‐bound states in the continuum that are robust to parameter scanning are unveiled, and experimental evidence of a remarkable Q‐factor of 350 at ≈1 MHz frequency, far exceeding the state‐of‐the‐art using a fully acoustic underwater system is presented. The findings contribute novel insights into the understanding of BIC for acoustic waves, offering a new paradigm for the design of efficient, ultra‐high Q‐factor ultrasound devices.
Observation of Ultra‐High‐Q Resonators in the Ultrasound via Bound States in the Continuum
Farhat, Mohamed (Autor:in) / Achaoui, Younes (Autor:in) / Martínez, Julio Andrés Iglesias (Autor:in) / Addouche, Mahmoud (Autor:in) / Wu, Ying (Autor:in) / Khelif, Abdelkrim (Autor:in)
Advanced Science ; 11
01.09.2024
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Observation of Ultra‐High‐Q Resonators in the Ultrasound via Bound States in the Continuum
| Wiley | 2024
Topology‐Optimized Bound States in the Continuum with High‐Q Acoustic Field Enhancement
| Wiley | 2025
Broadband Acoustic Purcell Effect from Collective Bound States in the Continuum
| Wiley | 2025
Continuum modeling of a composite material with internal resonators
| British Library Online Contents | 2012
Self‐Powered Frequency‐Selective Acoustic Sensor Based on Bound States in the Continuum
| Wiley | 2025