Frontiers in Phononics: Parity-Time Symmetric Phononic Metamaterials

Publicaciones

Flat Bands in Magic-Angle Vibrating Plates

Autores: María Rosendo López, Fernando Peñaranda, Johan Christensen, Pablo San-Jose
Publicado en: Physical Review Letters, Edición 125/21, 2020, ISSN 0031-9007
Editor: American Physical Society
DOI: 10.1103/physrevlett.125.214301

Ultrasonic nodal chains in topological granular metamaterials

Autores: Aurélien Merkel, Johan Christensen
Publicado en: Communications Physics, Edición 2/1, 2019, ISSN 2399-3650
Editor: Nature Partner Journals
DOI: 10.1038/s42005-019-0256-z

Subwavelength Acoustic Valley-Hall Topological Insulators Using Soda Cans Honeycomb Lattices.

Autores: Zhiwang Zhang; Y. Gu; Houyou Long; Ying Cheng; Xiaojun Liu; Johan Christensen
Publicado en: Research, Vol 2019 (2019), Edición 1, 2019, ISSN 2639-5274
Editor: American Association for the Advancement of Science
DOI: 10.34133/2019/5385763

Flexible mechanical metamaterials

Autores: Katia Bertoldi; Vincenzo Vitelli; Vincenzo Vitelli; Johan Christensen; Martin van Hecke
Publicado en: VOLUME=2;STARTPAGE=17066;TITLE=Nature Reviews Materials, Edición 1, 2017, ISSN 2058-8437
Editor: Nature Portfolio
DOI: 10.1038/natrevmats.2017.66

Majorana-like Zero Modes in Kekulé Distorted Sonic Lattices

Autores: Penglin Gao; Daniel Torrent; Francisco Cervera; Pablo San-Jose; José Sánchez-Dehesa; Johan Christensen
Publicado en: reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, Edición 1, 2019, ISSN 0031-9007
Editor: American Physical Society
DOI: 10.1103/physrevlett.123.196601

Slow Surface Acoustic Waves via Lattice Optimization of a Phononic Crystal on a Chip

Autores: Si-Yuan Yu, Ji-Qian Wang, Xiao-Chen Sun, Fu-Kang Liu, Cheng He, Huan-Huan Xu, Ming-Hui Lu, Johan Christensen, Xiao-Ping Liu, Yan-Feng Chen
Publicado en: Physical Review Applied, Edición 14/6, 2020, ISSN 2331-7019
Editor: American Physical Society
DOI: 10.1103/physrevapplied.14.064008

Knitting topological bands in artificial sonic semimetals

Autores: Li-Yang Zheng; Xiujuan Zhang; Ming-Hui Lu; Yan-Feng Chen; Johan Christensen
Publicado en: Materials Today Physics, Edición 1, 2020, ISSN 2542-5293
Editor: Elsevier
DOI: 10.1016/j.mtphys.2020.100299

Topological radiation engineering in hyperbolic sonic semimetals

Autores: Li-Yang Zheng; Johan Christensen
Publicado en: Phys. Rev. B, Edición 1, 2021, ISSN 2469-9950
Editor: American Physical Society
DOI: 10.1103/physrevb.103.064307

Orbital Angular Momentum Multiplexing in Space–Time Thermoacoustic Metasurfaces

Autores: Yurou Jia; Yimin Liu; Bolun Hu; Wei Xiong; Yechao Bai; Ying Cheng; Dajian Wu; Xiaojun Liu; Johan Christensen
Publicado en: Crossref, Edición 1, 2022, ISSN 0935-9648
Editor: United Nations Industrial Developement Organization
DOI: 10.1002/adma.202202026

Mechanical Analogue of a Majorana Bound State

Autores: Chun‐Wei Chen, Natalia Lera, Rajesh Chaunsali, Daniel Torrent, Jose Vicente Alvarez, Jinkyu Yang, Pablo San‐Jose, Johan Christensen
Publicado en: Advanced Materials, Edición 31/51, 2019, Página(s) 1904386, ISSN 0935-9648
Editor: United Nations Industrial Developement Organization
DOI: 10.1002/adma.201904386

Topological Sound Pumping of Zero‐Dimensional Bound States

Autores: Penglin Gao, Johan Christensen
Publicado en: Advanced Quantum Technologies, Edición 3/9, 2020, Página(s) 2000065, ISSN 2511-9044
Editor: Advanced Quantum Technologies (Wiley-VCH GmbH, Weinheim)
DOI: 10.1002/qute.202000065

Subwavelength multiple topological interface states in one-dimensional labyrinthine acoustic metamaterials

Autores: Zhiwang Zhang, Ying Cheng, Xiaojun Liu, Johan Christensen
Publicado en: Physical Review B, Edición 99/22, 2019, ISSN 2469-9950
Editor: American Physical Society
DOI: 10.1103/physrevb.99.224104

Corner states in second-order mechanical topological insulator

Autores: Chen, Chun-Wei; Chaunsali, Rajesh; Christensen, Johan; Theocharis, Georgios; Yang, Jinkyu
Publicado en: communications materials, Edición 18, 2021, ISSN 2662-4443
Editor: Nature Publishing
DOI: 10.48550/arxiv.2009.03525

Multiple scattering theory of non-Hermitian sonic second-order topological insulators

Autores: María Rosendo López, Zhiwang Zhang, Daniel Torrent, Johan Christensen
Publicado en: Communications Physics, Edición 2/1, 2019, ISSN 2399-3650
Editor: Nature Research
DOI: 10.1038/s42005-019-0233-6

Polarization bandgaps and fluid-like elasticity in fully solid elastic metamaterials.

Autores: Guancong Ma; Caixing Fu; Guanghao Wang; Philipp del Hougne; Johan Christensen; Yun Lai; Ping Sheng
Publicado en: instname:, Edición 1, 2016, ISSN 2041-1723
Editor: Nature Publishing Group
DOI: 10.1038/ncomms13536

Dynamic Nonreciprocity in Loss-Compensated Piezophononic Media

Autores: Aurélien Merkel, Morten Willatzen, Johan Christensen
Publicado en: Physical Review Applied, Edición 9/3, 2018, ISSN 2331-7019
Editor: American Physical Society
DOI: 10.1103/physrevapplied.9.034033

Optical force rectifiers based on PT-symmetric metasurfaces

Autores: Rasoul Alaee, Burak Gurlek, Johan Christensen, Muamer Kadic
Publicado en: Physical Review B, Edición 97/19, 2018, ISSN 2469-9950
Editor: American Physical Society
DOI: 10.1103/physrevb.97.195420

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

Autores: Rasoul Alaee, Johan Christensen, Muamer Kadic
Publicado en: Physical Review Applied, Edición 9/1, 2018, ISSN 2331-7019
Editor: APS
DOI: 10.1103/PhysRevApplied.9.014007

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

Autores: Zhiwang Zhang, Ye Tian, Ying Cheng, Xiaojun Liu, Johan Christensen
Publicado en: Physical Review B, Edición 96/24, 2017, ISSN 2469-9950
Editor: APS
DOI: 10.1103/PhysRevB.96.241306

Valley Hall phases in kagome lattices

Autores: Natalia Lera, Daniel Torrent, P. San-Jose, J. Christensen, J. V. Alvarez
Publicado en: Physical Review B, Edición 99/13, 2019, ISSN 2469-9950
Editor: APS
DOI: 10.1103/PhysRevB.99.134102

Directional Acoustic Antennas Based on Valley-Hall Topological Insulators

Autores: Zhiwang Zhang, Ye Tian, Yihe Wang, Shuxiang Gao, Ying Cheng, Xiaojun Liu, Johan Christensen
Publicado en: Advanced Materials, Edición 30/36, 2018, Página(s) 1803229, ISSN 0935-9648
Editor: United Nations Industrial Developement Organization
DOI: 10.1002/adma.201803229

Topological sound

Autores: Xiujuan Zhang, Meng Xiao, Ying Cheng, Ming-Hui Lu, Johan Christensen
Publicado en: Communications Physics, Edición 1/1, 2018, ISSN 2399-3650
Editor: NPG
DOI: 10.1038/s42005-018-0094-4

Non-Hermitian Sonic Second-Order Topological Insulator

Autores: Zhiwang Zhang, María Rosendo López, Ying Cheng, Xiaojun Liu, Johan Christensen
Publicado en: Physical Review Letters, Edición 122/19, 2019, ISSN 0031-9007
Editor: American Physical Society
DOI: 10.1103/PhysRevLett.122.195501

Valley Physics in Non-Hermitian Artificial Acoustic Boron Nitride

Autores: Mudi Wang, Liping Ye, J. Christensen, Zhengyou Liu
Publicado en: Physical Review Letters, Edición 120/24, 2018, ISSN 0031-9007
Editor: American Physical Society
DOI: 10.1103/PhysRevLett.120.246601

Unidirectional zero sonic reflection in passive PT -symmetric Willis media

Autores: Aurélien Merkel, Vicent Romero-García, Jean-Philippe Groby, Jensen Li, Johan Christensen
Publicado en: Physical Review B, Edición 98/20, 2018, ISSN 2469-9950
Editor: APS
DOI: 10.1103/PhysRevB.98.201102

Ultrathin acoustic parity-time symmetric metasurface cloak

Autores: Li, Hao-Xiang; Rosendo-Lopez, Maria; Zhu, Yi-Fan; Fan, Xu-Dong; Torrent, Daniel; Liang, Bin; Cheng, Jian-Chum; Christensen, Johan
Publicado en: SPJ Research, Edición 1, 2019, ISSN 2058-8437
Editor: Under review in SPJ Research

Topological Acoustic Delay Line

Autores: Zhiwang Zhang, Ye Tian, Ying Cheng, Qi Wei, Xiaojun Liu, Johan Christensen
Publicado en: Physical Review Applied, Edición 9/3, 2018, ISSN 2331-7019
Editor: APS
DOI: 10.1103/PhysRevApplied.9.034032

Deep‐Subwavelength Holey Acoustic Second‐Order Topological Insulators

Autores: Zhiwang Zhang, Houyou Long, Chen Liu, Chen Shao, Ying Cheng, Xiaojun Liu, Johan Christensen
Publicado en: Advanced Materials, Edición 31/49, 2019, Página(s) 1904682, ISSN 0935-9648
Editor: United Nations Industrial Developement Organization
DOI: 10.1002/adma.201904682

Sonic valley-Chern insulators

Autores: Penglin Gao, Zhiwang Zhang, Johan Christensen
Publicado en: Physical Review B, Edición 101/2, 2020, ISSN 2469-9950
Editor: American Physical Society
DOI: 10.1103/physrevb.101.020301

Dirac Hierarchy in Acoustic Topological Insulators.

Autores: Li-Yang Zheng; Johan Christensen
Publicado en: Physical Review Letters, Edición 4, 2021, ISSN 0031-9007
Editor: American Physical Society
DOI: 10.1103/physrevlett.127.156401

Non-Hermitian topological whispering gallery

Autores: B. Hu, Z. Zhang, H. Zhang, L. Zheng, W. Xiong, Z. Yue, X. Wang, J. Xu, Y. Cheng, X. Liu, and J. Christensen
Publicado en: Nature, 2021, ISSN 0028-0836
Editor: Nature Publishing Group
DOI: 10.1038/s41586-021-03833-4

Pseudospin induced topological corner state at intersecting sonic lattices

Autores: Zhiwang Zhang, Bolun Hu, Feng Liu, Ying Cheng, Xiaojun Liu, Johan Christensen
Publicado en: Physical Review B, Edición 101/22, 2020, ISSN 2469-9950
Editor: American Physical Society
DOI: 10.1103/physrevb.101.220102

$\PT$ symmetric sonic crystals: From asymmetric echoes to supersonic speeds

Autores: Maria Rosendo-Lopez; Aurélien Merkel; Johan Christensen
Publicado en: instname:Universidad Carlos III de Madrid (UC3M), Edición 4, 2018, ISSN 0295-5075
Editor: EDP Sciences
DOI: 10.1209/0295-5075/124/34001

Anomalous Topological Edge States in Non-Hermitian Piezophononic Media

Autores: Penglin Gao, Morten Willatzen, Johan Christensen
Publicado en: Physical Review Letters, Edición 125/20, 2020, ISSN 0031-9007
Editor: American Physical Society
DOI: 10.1103/physrevlett.125.206402

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