Manufacturing of membrane acoustical metamaterials for low frequency noise reduction and control: a review

C Wang, L Cai, M Gao, L Jin, L Sun… - Mechanics of …, 2024 - Taylor & Francis
As a subcategory of acoustic metamaterials, membrane acoustic metamaterials (MAMs) are
lighter and more adjustable than other types of acoustic metamaterials when it comes to low …

Experimental investigation on characteristics of graphene acoustic transducers driven by electrostatic and electromagnetic forces

X Guo, Y Zhang, J An, Q Zhang, R Wang, X Yu - Ultrasonics, 2023 - Elsevier
Acoustic transducers with graphene film have high sensitivity and wide bandwidth of
frequency response as receivers. However, they exist in transmitting mode with low radiation …

Analysis and design of high-frequency 1-D CMUT imaging arrays in noncollapsed mode

EF Arkan, FL Degertekin - IEEE transactions on ultrasonics …, 2018 - ieeexplore.ieee.org
High-frequency ultrasound imaging arrays are important for a broad range of applications,
from small animal imaging to photoacoustics. Capacitive micromachined ultrasonic …

Nanocontact Tailoring via Microlensing Enables Giant Postfabrication Mesoscopic Tuning in a Self‐Assembled Ultrasonic Metamaterial

MA Ghanem, A Khanolkar, H Zhao… - Advanced Functional …, 2020 - Wiley Online Library
The ability to tune the resonant frequency of a self‐assembled ultrasonic metamaterial with
mesoscale spatial resolution, after fabrication, by up to 250% is demonstrated. This tunability …

Design of broadband linear micromachined ultrasonic transducer arrays by means of boundary element method coupled with normal mode theory

A Boulmé, D Certon - IEEE Transactions on Ultrasonics …, 2015 - ieeexplore.ieee.org
In view of the maturity of fabrication processes for capacitive micromachined ultrasonic
transducers (cMUTs), engineers and researchers now need efficient and accurate modeling …

[HTML][HTML] Modal and transient analysis of membrane acoustic metasurfaces

S Lani, KG Sabra, FL Degertekin - Journal of Applied Physics, 2015 - pubs.aip.org
Dispersive surface waves on an acoustic 2D metamaterial, a metasurface consisting of
membranes on a rigid surface, have certain propagation characteristics with potential …

Fabrication and Evaluation of MUT‐Type Acoustic Metamaterial for Impedance Matching

H Tanaka, S Machida, M Nanri - IEEJ Transactions on Electrical …, 2024 - Wiley Online Library
A micromachined ultrasonic transducer (MUT)‐type acoustic metamaterial that achieved
acoustic impedance matching between materials with different acoustic impedances was …

[HTML][HTML] Super-resolution ultrasonic imaging of stiffness variations on a microscale active metasurface

S Lani, KG Sabra, FL Degertekin - Applied Physics Letters, 2016 - pubs.aip.org
Surface acoustic waves propagating over an immersed membrane metasurface, such as an
array of capacitive micromachined ultrasonic transducers, can be leveraged to achieve …

Super broadband acoustic impedance matching by MUT‐type acoustic metamaterial

H Tanaka, S Machida - Electronics and Communications in …, 2020 - Wiley Online Library
We show the structure and matching theory of MUT‐type acoustic matching device. A
simulation model of the finite element method was constructed and the following evaluations …

Integrating porous silicon layer backing to capacitive micromachined ultrasonic transducers (CMUT)-based linear arrays for acoustic Lamb wave attenuation

J Lascaud, T Defforge, L Colin, C Meynier… - Journal of Applied …, 2022 - pubs.aip.org
Lamb waves propagating in the substrate of linear arrays integrated on a silicon (Si) chip
may degrade the elementary performances of the imaging device. In fact, these waves are …