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Discoveries in Phononic Crystals and...

Wang, Pai.

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Discoveries in Phononic Crystals and Acoustic Metamaterials.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Discoveries in Phononic Crystals and Acoustic Metamaterials./
Author:	Wang, Pai.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
Description:	97 p.
Notes:	Source: Dissertation Abstracts International, Volume: 77-09(E), Section: B.
Contained By:	Dissertation Abstracts International77-09B(E).
Subject:	Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10102906
ISBN:	9781339665344

Discoveries in Phononic Crystals and Acoustic Metamaterials.
Wang, Pai.

Discoveries in Phononic Crystals and Acoustic Metamaterials. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 97 p.

Source: Dissertation Abstracts International, Volume: 77-09(E), Section: B.

Thesis (Ph.D.)--Harvard University, 2016.

Phononic crystals and acoustic metamaterials are heterogeneous materials that enable manipulation of elastic waves. An important characteristic of these heterogeneous systems is their ability to tailor the propagation of elastic waves due to the existence of band gaps -- frequency ranges of strong wave attenuation. In this Thesis, I report discoveries of three new types of band gaps: i) Band gaps induced by geometric frustration in periodic acoustic channel networks; ii) Band gap induced by high connectivity in periodic beam lattices; and iii) Topological band gaps in gyroscopic phononic crystals that protects one-way edge waves. The investigations presented here shed new light on the rich dynamic properties of phononic crystals and acoustic metamaterials, opening avenues for new strategies to control mechanical waves in elastic systems.

ISBN: 9781339665344Subjects--Topical Terms:

525881
Mechanics.

Discoveries in Phononic Crystals and Acoustic Metamaterials.
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300 $a 97 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-09(E), Section: B.
500 $a Advisers: Z. Suo; J. Vlassak; A. Amir; K. Bertoldi.
502 $a Thesis (Ph.D.)--Harvard University, 2016.
520 $a Phononic crystals and acoustic metamaterials are heterogeneous materials that enable manipulation of elastic waves. An important characteristic of these heterogeneous systems is their ability to tailor the propagation of elastic waves due to the existence of band gaps -- frequency ranges of strong wave attenuation. In this Thesis, I report discoveries of three new types of band gaps: i) Band gaps induced by geometric frustration in periodic acoustic channel networks; ii) Band gap induced by high connectivity in periodic beam lattices; and iii) Topological band gaps in gyroscopic phononic crystals that protects one-way edge waves. The investigations presented here shed new light on the rich dynamic properties of phononic crystals and acoustic metamaterials, opening avenues for new strategies to control mechanical waves in elastic systems.
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650 4 $a Acoustics. $3 879105
650 4 $a Mechanical engineering. $3 649730
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