Ultrasonic super-oscillation wave-packets with an acoustic meta-lens

Ya-Xi Shen, Yu-Gui Peng, Feiyan Cai (), Kun Huang, Zhao De-Gang, Cheng-Wei Qiu (), Hairong Zheng () and Xue-Feng Zhu ()
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Ya-Xi Shen: Huazhong University of Science and Technology
Yu-Gui Peng: Huazhong University of Science and Technology
Feiyan Cai: Shenzhen Institutes of Advanced Technology, Chinese Academy of Science
Kun Huang: University of Science and Technology of China
Zhao De-Gang: Huazhong University of Science and Technology
Cheng-Wei Qiu: National University of Singapore
Hairong Zheng: Shenzhen Institutes of Advanced Technology, Chinese Academy of Science
Xue-Feng Zhu: Huazhong University of Science and Technology

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: 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.

Date: 2019
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DOI: 10.1038/s41467-019-11430-3

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