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

• Main Authors: Chen, Jian, Rao, Jing, Lisevych, Danylo, Fan, Zheng
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2019
• Subjects: Wave Mechanics; Ultrasound; DRNTU::Engineering::Mechanical engineering
• Online Access: https://hdl.handle.net/10356/85350; http://hdl.handle.net/10220/48895
• Institution: Nanyang Technological University

Focusing of ultrasonic waves in water plays an important role in various scenarios ranging from biomedical imaging to nondestructive testing. Acoustic metasurfaces have been largely explored for acoustic focusing, but they are generally narrowband and mainly implemented for airborne sound because of...