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Frontiers in Phononics: Parity-Time Symmetric Phononic Metamaterials

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Publications

Dynamic Nonreciprocity in Loss-Compensated Piezophononic Media

Author(s): Aurélien Merkel, Morten Willatzen, Johan Christensen
Published in: Physical Review Applied, Issue 9/3, 2018, ISSN 2331-7019
DOI: 10.1103/physrevapplied.9.034033

Optical force rectifiers based on PT-symmetric metasurfaces

Author(s): Rasoul Alaee, Burak Gurlek, Johan Christensen, Muamer Kadic
Published in: Physical Review B, Issue 97/19, 2018, ISSN 2469-9950
DOI: 10.1103/physrevb.97.195420

Optical Pulling and Pushing Forces in Bilayer P T -Symmetric Structures

Author(s): Rasoul Alaee, Johan Christensen, Muamer Kadic
Published in: Physical Review Applied, Issue 9/1, 2018, ISSN 2331-7019
DOI: 10.1103/PhysRevApplied.9.014007

Experimental verification of acoustic pseudospin multipoles in a symmetry-broken snowflakelike topological insulator

Author(s): Zhiwang Zhang, Ye Tian, Ying Cheng, Xiaojun Liu, Johan Christensen
Published in: Physical Review B, Issue 96/24, 2017, ISSN 2469-9950
DOI: 10.1103/PhysRevB.96.241306

Valley Hall phases in kagome lattices

Author(s): Natalia Lera, Daniel Torrent, P. San-Jose, J. Christensen, J. V. Alvarez
Published in: Physical Review B, Issue 99/13, 2019, ISSN 2469-9950
DOI: 10.1103/PhysRevB.99.134102

Directional Acoustic Antennas Based on Valley-Hall Topological Insulators

Author(s): Zhiwang Zhang, Ye Tian, Yihe Wang, Shuxiang Gao, Ying Cheng, Xiaojun Liu, Johan Christensen
Published in: Advanced Materials, Issue 30/36, 2018, Page(s) 1803229, ISSN 0935-9648
DOI: 10.1002/adma.201803229

Topological sound

Author(s): Xiujuan Zhang, Meng Xiao, Ying Cheng, Ming-Hui Lu, Johan Christensen
Published in: Communications Physics, Issue 1/1, 2018, ISSN 2399-3650
DOI: 10.1038/s42005-018-0094-4

Non-Hermitian Sonic Second-Order Topological Insulator

Author(s): Zhiwang Zhang, María Rosendo López, Ying Cheng, Xiaojun Liu, Johan Christensen
Published in: Physical Review Letters, Issue 122/19, 2019, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.122.195501

Valley Physics in Non-Hermitian Artificial Acoustic Boron Nitride

Author(s): Mudi Wang, Liping Ye, J. Christensen, Zhengyou Liu
Published in: Physical Review Letters, Issue 120/24, 2018, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.120.246601

Unidirectional zero sonic reflection in passive PT -symmetric Willis media

Author(s): Aurélien Merkel, Vicent Romero-García, Jean-Philippe Groby, Jensen Li, Johan Christensen
Published in: Physical Review B, Issue 98/20, 2018, ISSN 2469-9950
DOI: 10.1103/PhysRevB.98.201102

Ultrathin acoustic parity-time symmetric metasurface cloak

Author(s): Li, Hao-Xiang; Rosendo-Lopez, Maria; Zhu, Yi-Fan; Fan, Xu-Dong; Torrent, Daniel; Liang, Bin; Cheng, Jian-Chum; Christensen, Johan
Published in: SPJ Research, Issue 1, 2019, ISSN 2058-8437

Topological Acoustic Delay Line

Author(s): Zhiwang Zhang, Ye Tian, Ying Cheng, Qi Wei, Xiaojun Liu, Johan Christensen
Published in: Physical Review Applied, Issue 9/3, 2018, ISSN 2331-7019
DOI: 10.1103/PhysRevApplied.9.034032