NDLI: Acoustic isolation of disc-shaped modes using periodic corrugated plate-based phononic crystal

Content Provider	IET Digital Library
Author	Moutaouekkil, M. Talbi, A. Boudouti, E. H. El Elmazria, O. Rouhani, B. Djafari Pernod, P. Matar, O. Bou
Abstract	The properties of highly confined and isolated surface modes in a phononic crystal based on a stripped membrane combined with disc-shaped thin films deposited on the micro-strip surface is investigated. The structure is made of an aluminium nitride (AlN) thin film membrane and gold (Au) for the disc-shaped thin film. These materials are chosen owing to the strong contrast in their elastic and density properties and to their compatibility with electroacoustic devices technology. An optimal choice of the geometrical parameters of the membrane and the grooves enables the obtaining of wide stop-band frequencies. The introduction of disc-shaped thin films on the grooved surface enables the introduction of nearly flat modes within the band gap and consequently paves the way to implement advanced design of electroacoustic filters and high-performance cavity resonators.
Starting Page	301
Ending Page	303
Page Count	3
ISSN	00135194
Volume Number	54
e-ISSN	1350911X
Issue Number	Issue 5, Mar (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/54/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2017.4029
Journal	Electronics Letters
Publisher Date	2018-01-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acoustic Isolation Acoustic Property of Solids Acoustoelectric Effects Acoustoelectric Effects (Electronic Transport) Aluminium Compound Aluminium Nitride Thin Film Membrane Band Gap Disc-shaped Modes Disc-shaped Thin Film Deposition Elastic Constants Elastic Property Elasticity Elasticity And Anelasticity Electroacoustic Electroacoustic Device Epitaxy Geometrical Parameter Gold High-performance Cavity Resonator III-V SemiConductor Isolated Surface Mode Periodic Corrugated Plate-based Phononic Crystal Phononic Crystal Phonons in Low-dimensional Structure And Small Particle Semiconductor Thin Film Stripped Membrane Structural Acoustics Structural Acoustics And Vibration Structure Thin Film Growth Wide Band Gap SemiConductor
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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