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Title: Ultrasonic super-oscillation wave-packets with an acoustic meta-lens
Authors: Shen, Y.-X.
Peng, Y.-G.
Cai, F.
Huang, K.
Zhao, D.-G.
Qiu, C.-W. 
Zheng, H.
Zhu, X.-F.
Issue Date: 2019
Publisher: Nature Publishing Group
Citation: Shen, Y.-X., Peng, Y.-G., Cai, F., Huang, K., Zhao, D.-G., Qiu, C.-W., Zheng, H., Zhu, X.-F. (2019). Ultrasonic super-oscillation wave-packets with an acoustic meta-lens. Nature Communications 10 (1) : 3411. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: The Schrödinger equation is a fundamental equation to describe the wave function of a quantum-mechanical system. The similar forms between the Schrödinger equation and the paraxial wave equation allow a paradigm shift from the quantum mechanics to classical fields, opening up a plethora of interesting phenomena including the optical super-oscillatory behavior. Here, we propose an ultrasonic meta-lens for generating super-oscillation acoustic wave-packets with different spatial momenta and then superimposing them to a diffraction-limit-broken spot, visually represented by the ring-shaped trapping of tiny particles. Moreover, based on the focused super-oscillation packets, we experimentally verify proof-of-concept super-resolution ultrasound imaging, opening up the arena of super-oscillation ultrasonics for advanced acoustic imaging, biomedical applications, and versatile far-field ultrasound control. © 2019, The Author(s).
Source Title: Nature Communications
ISSN: 20411723
DOI: 10.1038/s41467-019-11430-3
Rights: Attribution 4.0 International
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