1. Metamaterial-based acoustic devices for audio and ultrasound applications Open Access Author: Ji, Jun Title: Metamaterial-based acoustic devices for audio and ultrasound applications Graduate Program: Acoustics Keywords: acoustic metamaterailsacoustic metasurfacesacoustic devicesaudio engineeringultrasound File: Download PSUthesis_Jun__No_SM.pdf Committee Members: Andrew Barnard, Program Head/ChairXingjie Ni, Outside Unit & Field MemberVictor Sparrow, Major Field MemberYun Jing, Chair & Dissertation AdvisorBen Beck, Major Field Member