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Frontiers in Phononics: Parity-Time Symmetric Phononic Metamaterials

Total Cost €


EC-Contrib. €






 PHONOMETA project word cloud

Explore the words cloud of the PHONOMETA project. It provides you a very rough idea of what is the project "PHONOMETA" about.

avenues    time    edge    frontiers    units    nevertheless    metamaterials    phononic    cutting    physics    flow    consistent    metamaterial    physical    reciprocal    waves    scattering    inspired    groundbreaking    thanks    pt    successful    surrounding    sculpture    balanced    gain    phonometa    elastic    cunningly    unprecedented    wave    platform    acoustic    daily    reversal    realization    submarines    translate    piezoelectric    active    anticipate    quantum    stealth    progress    unitary    revolutionize    boost    discover    semiconductors    diode    sound    horizons    push    multiple    media    material    structures    nor    extraordinary    zero    hiding    introducing    reflections    acoustics    biased    explore    ambient    pollution    paradigms    wish    electrically    life    applicable    symmetric    stem    mechanics    coatings    noise    notions    parity    nature    tunable    cloaks    symmetry    science    mitigation    sculpturing    contrived    mechanical    invisibility    extension    environmental   

Project "PHONOMETA" data sheet

The following table provides information about the project.


Organization address
address: CALLE MADRID 126
postcode: 28903

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Spain [ES]
 Project website
 Total cost 1˙325˙158 €
 EC max contribution 1˙325˙158 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-STG
 Funding Scheme ERC-STG
 Starting year 2016
 Duration (year-month-day) from 2016-12-01   to  2021-11-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The boost experienced by acoustic and elastic (phononic) metamaterial research during the past years has been driven by the ability to sculpture the flow of sound waves at will. Thanks to recent developments at the frontiers of phononic metamaterials it can be identified that active phononic control is at the cutting edge of the current research on phononic metamaterials. Introducing piezoelectric semiconductors as a material platform to discover new avenues in wave physics will have the potential to open horizons of opportunities in science of acoustic wave control. Electrically biased piezoelectric semiconductors are non-reciprocal by nature, produce mechanical gain and are highly tunable.

The aim is to explore novel properties of sound and the ability to design Parity-Time (PT) symmetric systems that define a consistent unitary extension of quantum mechanics. Through cunningly contrived piezoelectric media sculpturing balanced loss and gain units, these structures have neither parity symmetry nor time-reversal symmetry, but are nevertheless symmetric in the product of both. PHONOMETA is inspired and driven by these common notions of quantum mechanics that I wish to translate into classical acoustics with unprecedented knowledge for the case of sound.

I expect that the successful realization of PHONOMETA has the potential to revolutionize acoustics in our daily life. Environmental and ambient noise stem from multiple scattering and reflections of sound in our surrounding. The extraordinary properties of PT acoustic metamaterials have the groundbreaking potential to push forward physical acoustics with new paradigms to design tunable diode-like behaviour with zero reflections, which is applicable for noise pollution mitigation. Also I anticipate to impact the progress on invisibility cloaks by introducing PT symmetry based acoustic stealth coatings for hiding submarines.


year authors and title journal last update
List of publications.
2018 Aurélien Merkel, Vicent Romero-García, Jean-Philippe Groby, Jensen Li, Johan Christensen
Unidirectional zero sonic reflection in passive PT -symmetric Willis media
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.98.201102
Physical Review B 98/20 2019-09-04
2019 Li, Hao-Xiang; Rosendo-Lopez, Maria; Zhu, Yi-Fan; Fan, Xu-Dong; Torrent, Daniel; Liang, Bin; Cheng, Jian-Chum; Christensen, Johan
Ultrathin acoustic parity-time symmetric metasurface cloak
published pages: , ISSN: 2058-8437, DOI:
SPJ Research 1 2019-09-04
2018 Xiujuan Zhang, Meng Xiao, Ying Cheng, Ming-Hui Lu, Johan Christensen
Topological sound
published pages: , ISSN: 2399-3650, DOI: 10.1038/s42005-018-0094-4
Communications Physics 1/1 2019-09-02
2018 Zhiwang Zhang, Ye Tian, Ying Cheng, Qi Wei, Xiaojun Liu, Johan Christensen
Topological Acoustic Delay Line
published pages: , ISSN: 2331-7019, DOI: 10.1103/PhysRevApplied.9.034032
Physical Review Applied 9/3 2019-09-02
2018 Mudi Wang, Liping Ye, J. Christensen, Zhengyou Liu
Valley Physics in Non-Hermitian Artificial Acoustic Boron Nitride
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.120.246601
Physical Review Letters 120/24 2019-09-02
2019 Natalia Lera, Daniel Torrent, P. San-Jose, J. Christensen, J. V. Alvarez
Valley Hall phases in kagome lattices
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.99.134102
Physical Review B 99/13 2019-09-02
2018 Rasoul Alaee, Burak Gurlek, Johan Christensen, Muamer Kadic
Optical force rectifiers based on PT-symmetric metasurfaces
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.97.195420
Physical Review B 97/19 2019-06-13
2018 Zhiwang Zhang, Ye Tian, Ying Cheng, Qi Wei, Xiaojun Liu, Johan Christensen
Topological Acoustic Delay Line
published pages: , ISSN: 2331-7019, DOI: 10.1103/physrevapplied.9.034032
Physical Review Applied 9/3 2019-06-13
2017 Zhiwang Zhang, Ye Tian, Ying Cheng, Xiaojun Liu, Johan Christensen
Experimental verification of acoustic pseudospin multipoles in a symmetry-broken snowflakelike topological insulator
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.96.241306
Physical Review B 96/24 2019-06-13
2018 Rasoul Alaee, Johan Christensen, Muamer Kadic
Optical Pulling and Pushing Forces in Bilayer P T -Symmetric Structures
published pages: , ISSN: 2331-7019, DOI: 10.1103/PhysRevApplied.9.014007
Physical Review Applied 9/1 2019-06-13
2018 Aurélien Merkel, Morten Willatzen, Johan Christensen
Dynamic Nonreciprocity in Loss-Compensated Piezophononic Media
published pages: , ISSN: 2331-7019, DOI: 10.1103/physrevapplied.9.034033
Physical Review Applied 9/3 2019-06-13
2018 Mudi Wang, Liping Ye, J. Christensen, Zhengyou Liu
Valley Physics in Non-Hermitian Artificial Acoustic Boron Nitride
published pages: , ISSN: 0031-9007, DOI: 10.1103/physrevlett.120.246601
Physical Review Letters 120/24 2019-06-13

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