4.6 Article

Broadband and high-numerical-aperture sharp focusing for waterborne sound with metagrating-based lens

Related references

Note: Only part of the references are listed.
Article Physics, Multidisciplinary

Three-dimensional ultrasound subwavelength arbitrary focusing with broadband sparse metalens

Xue Jiang et al.

Summary: This study proposes a method for three-dimensional ultrasound focusing using a sparse metalens, achieving subwavelength resolution within a wide bandwidth. The sparse metalens has advantages such as three-dimensional freewheeling focusing, subwavelength resolution, and geometric simplicity, providing new possibilities for research and applications in ultrasound focusing.

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY (2022)

Article Multidisciplinary Sciences

Planar ultrasonic transducer based on a metasurface piezoelectric ring array for subwavelength acoustic focusing in water

Shin Hur et al.

Summary: In this study, a new ultrasonic transducer with improved focusing performance was designed and tested. The experimental results demonstrated that the transducer had a high ability to produce needle-like subwavelength focusing beams in water, making it potentially useful for high-resolution imaging devices or medical ultrasound focusing devices.

SCIENTIFIC REPORTS (2022)

Review Physics, Applied

Optical superoscillation technologies beyond the diffraction limit

Nikolay I. Zheludev et al.

Summary: Optical superoscillations involve rapid spatial variations of light intensity and phase, offering subwavelength optical resolution that can be enhanced through the use of artificial intelligence. Technologies for generating superoscillatory hotspots have been developed, enabling advancements in imaging and metrology with the potential for deeply subwavelength resolution. The understanding of superoscillatory light has led to the creation of novel superoscillatory lenses, imaging techniques, and metrology technologies that exploit high light localization and rapid phase variation, opening up new avenues for label-free, non-intrusive super-resolution imaging.

NATURE REVIEWS PHYSICS (2022)

Article Physics, Applied

Multifunctional reflected lenses based on aperiodic acoustic metagratings

Yu-jing Lu et al.

Summary: Acoustic metagratings provide various sound modulation approaches through high-efficiency diffractions, with the extension of the generalized Snell's law promoting the design of metagratings with aperiodic phase profiles; however, realizing reflected aperiodic metagratings and their multifunctional devices remains a challenge. The study theoretically designs and experimentally demonstrates a class of reflected aperiodic metagratings and multifunctional acoustic lenses, overcoming the limitations of the generalized Snell's law and experimentally validating theoretical predictions of sound reflections created by aperiodic metagratings with arbitrary phase gradients. The research paves the way for modulating sound reflections and designing reflected multifunctional devices with promising applications.

APPLIED PHYSICS LETTERS (2021)

Article Nanoscience & Nanotechnology

Dirac fermion metagratings in graphene

Pengcheng Wan et al.

Summary: By designing a Dirac fermion metagrating in graphene, efficient deflection of electron beams is achieved, opening up a new paradigm in electron beam steering and the potential application in two-dimensional electronic holography.

NPJ 2D MATERIALS AND APPLICATIONS (2021)

Article Physics, Applied

Experimental demonstration of underwater ultrasound cloaking based on metagrating

Jiajie He et al.

APPLIED PHYSICS LETTERS (2020)

Article Materials Science, Multidisciplinary

Aperiodic Metagratings for High-Performance Multifunctional Acoustic Lenses

Jiao Qian et al.

ADVANCED MATERIALS TECHNOLOGIES (2020)

Article Physics, Applied

Broadband ultrasonic focusing in water with an ultra-compact metasurface lens

Jian Chen et al.

APPLIED PHYSICS LETTERS (2019)

Article Multidisciplinary Sciences

Reversal of transmission and reflection based on acoustic metagratings with integer parity design

Yangyang Fu et al.

NATURE COMMUNICATIONS (2019)

Article Multidisciplinary Sciences

Modulation of acoustic waves by a broadband metagrating

Yihe Wang et al.

SCIENTIFIC REPORTS (2019)

Review Optics

Superoscillation: from physics to optical applications

Gang Chen et al.

LIGHT-SCIENCE & APPLICATIONS (2019)

Article Physics, Applied

Ultrathin metasurface with high absorptance for waterborne sound

Jun Mei et al.

JOURNAL OF APPLIED PHYSICS (2018)

Article Physics, Multidisciplinary

Towards anti-causal Green's function for three-dimensional sub-diffraction focusing

Guancong Ma et al.

NATURE PHYSICS (2018)

Review Nanoscience & Nanotechnology

Acoustic metasurfaces

Badreddine Assouar et al.

NATURE REVIEWS MATERIALS (2018)

Article Physics, Applied

A thin and conformal metasurface for illusion acoustics of rapidly changing profiles

Marc Dubois et al.

APPLIED PHYSICS LETTERS (2017)

Article Physics, Applied

Three-dimensional ultra-broadband focusing flat mirror for airborne sound

Xu-Dong Fan et al.

APPLIED PHYSICS LETTERS (2016)

Article Physics, Applied

Acoustic metasurface-based perfect absorber with deep subwavelength thickness

Yong Li et al.

APPLIED PHYSICS LETTERS (2016)

Article Physics, Applied

High transmission acoustic focusing by impedance-matched acoustic meta-surfaces

Rasha Al Jahdali et al.

APPLIED PHYSICS LETTERS (2016)

Article Chemistry, Physical

Acoustic metasurface with hybrid resonances

Guancong Ma et al.

NATURE MATERIALS (2014)

Article Physics, Multidisciplinary

Controllable transmission and total reflection through an impedance-matched acoustic metasurface

Jun Mei et al.

NEW JOURNAL OF PHYSICS (2014)

Article Physics, Applied

Acoustic subwavelength imaging of subsurface objects with acoustic resonant metalens

Ying Cheng et al.

APPLIED PHYSICS LETTERS (2013)

Article Physics, Applied

Redirection of sound waves using acoustic metasurface

Jiajun Zhao et al.

APPLIED PHYSICS LETTERS (2013)

Article Physics, Applied

Acoustic focusing by coiling up space

Yong Li et al.

APPLIED PHYSICS LETTERS (2012)

Article Multidisciplinary Sciences

Dark acoustic metamaterials as super absorbers for low-frequency sound

Jun Mei et al.

NATURE COMMUNICATIONS (2012)