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(† corresponding author(s); § equal contribution.)

[54] Changqing Xu, Jun Mei, Guancong Ma, Ying Wu†, “Type-II Dirac Phonons in a Two-Dimensional Phononic Crystal,” APL Materials 12, 041128 (2024). [link]

[53] Hongkuan Zhang§, Qiyuan Wang§, Mathias Fink, Guancong Ma†, “Optimizing Multi-User Indoor Sound Communications with Acoustic Reconfigurable Metasurfaces,” Nature Communications 15, 1270 (2024). [link]

[52] Yi Yang†, Biao Yang†, Guancong Ma†, Jensen Li, Shuang Zhang, C. T. Chan, “Non-Abelian Physics in Light and Sound,” Science 383, eadf9621 (2024). [link]

[51] Xiaohan Cui, Ruo-Yang Zhang†, Xulong Wang, Wei Wang, Guancong Ma†, C. T. Chan†, “Experimental Realization of Stable Exceptional Chains Protected by Non-Hermitian Latent Symmetries Unique to Mechanical Systems,” Physical Review Letters 131, 237201 (2023). [link]

[50] Qiuchen Yan§, Zhihao Wang§, Dongyi Wang§, Rui Ma, Cuicui Lu†, Guancong Ma†, Xiaoyong Hu†, Qihuang Gong, “Non-Abelian Gauge Field in Optics,” Advances in Optics and Photonics 15, 907–976 (2023). [link]

[49] Wei Wang§, Mengying Hu§, Xulong Wang, Guancong Ma†, Kun Ding†, “Experimental Realization of Geometry-Dependent Skin Effect in a Reciprocal Two-Dimensional Lattice,” Physical Review Letters 131, 207201 (2023). [link]

[48] Xulong Wang, Wei Wang, Guancong Ma†, “Extended Topological Mode in a One-Dimensional Non-Hermitian Acoustic Crystal,” AAPPS Bulletin 33, 23 (2023). [link]

[47] Dongyi Wang§, Yuanchen Deng§, Jun Ji, Mourad Oudich, Wladimir A. Benalcazar†, Guancong Ma†, Yun Jing†, “Realization of a Z-Classified Chiral-Symmetric Higher-Order Topological Insulator in a Coupling-Inverted Acoustic Crystal,” Physical Review Letters 131, 157201 (2023). [link] (Editors' Suggestion)

[46] Weiyuan Tang, Kun Ding†, Guancong Ma†, “Realization and Topological Properties of Third-Order Exceptional Lines Embedded in Exceptional Surfaces,” Nature Communications 14, 6660 (2023). [link]

[45] Zhen Li, Kun Ding, Guancong Ma, "Eigenvalue Knots and Their Isotopic Equivalence in Three-State Non-Hermitian Systems," Physical Review Research 5, 023038 (2023). [link]

[44]Qiyuan Wang, Mathais Fink, Guancong Ma,  "Maximizing Focus Quality Through Random Media with Discrete-Phase-Sampling Lenses," Physical Review Applied 19, 034084 (2023). [link]

[43] Wei Wang§, Xulong Wang§, Guancong Ma, "Extended State in a Localized Continuum," Physical Review Letters 129, 264301 (2022). [link]

[42] Kun Ding†, Chen Fang†, Guancong Ma†, "Non-Hermitian Topology and Exceptional-Point Geometries," Nature Reviews Physics 4, 745–760 (2022). [link] (Journal Cover of Nature Reviews Physics.)

[41] Wei Wang§, Xulong Wang§, Guancong Ma, "Non-Hermitian Morphing of Topological Modes," Nature 608, 50–55 (2022). [link]

[40] Jing-jing Liu, Zheng-wei Li, Ze-Guo Chen, Weiyuan Tang, An Chen, Bin Liang†, Guancong Ma†, Jian-Chun Cheng†, “Experimental Realization of Weyl Exceptional Rings in a Synthetic Three-Dimensional Non-Hermitian Phononic Crystal,” Physical Review Letters 129, 084301 (2022). ​[link] (Editors' Suggestion)

[39] Yuanchen Deng, Wladimir A. Benalcazar, Ze-Guo Chen, Mourad Oudich, Guancong Ma, Yun Jing, "Observation of Degenerate Zero-Energy Topological States at Disclinations in an Acoustic Lattice," Physical Review Letters 128, 174301 (2022). [link] (Editors' Suggestion and Synopsis in Physics.)

[38] Xu-Lin Zhang, Feng Yu, Ze-Guo Chen, Zhen-Nan Tian, Qi-Dai Chen, Hong-Bo Sun†, Guancong Ma†, "Non-Abelian Brading on Photonic Chips," Nature Photonics 16, 390 (2022). [link] (Highlight: News and Views in Nature Photonics.)

[37] Tuo Liu, Shuowei An, Zhongming Gu, Shanjun Liang, He Gao, Guancong Ma, Jie Zhu†, "Chirality-Switchable Acoustic Vortex Emission via Non-Hermitian Selective Excitation at an Exceptional Point," Science Bulletin 67, 11311136 (2022). [link]

[36] Qiyuan Wang, Philipp del Hougne, and Guancong Ma†, "Controlling the Spatiotemporal Response of Transient Reverberating Sound," Physical Review Applied 17, 044007 (2022). [link]

[35] Weiyuan Tang, Kun Ding, Guancong Ma, "Experimental Realization of Non-Abelian Permutations in a Three-State Non-Hermitian System," National Science Review 11, nwac010 (2022). [link]

[34] Ze-Guo Chen, Ruo-Yang Zhang, C. T. Chan, Guancong Ma†, "Classical Non-Abelian Brading of Acoustic Modes," Nature Physics 18, 179184 (2022). [link] (Highlighted: News and Views in Nature Physics.)

[33] Wei Wang, Ze-Guo Chen, Guancong Ma†, "Synthetic Three-Dimensional ℤ×ℤ2 Topological Insulator in an Elastic Metacrystal," Physical Review Letters 127, 214302 (2021). [link]

[32] Shubo Wang†, Guanqing Zhang, Xulong Wang, Qing Tong, Jensen Li, Guancong Ma†, “Spin-Orbit Interactions of Transverse Sound,” Nature Communications 12, 6125 (2021). [link]

[31] Xiao Li§, Shiqiao Wu§, Guanqing Zhang, Wanzhu Cai, Jack Ng, Guancong Ma†, "Measurement of Corner-Mode Coupling in Acoustic Higher-Order Topological Insulators," Frontiers in Physics 9, 770589 (2021). [link]

[30] Wei Wang, Yang Tan, Bin Liang†, Guancong Ma, Shubo Wang, Jian-Chun Cheng, “Generalized Momentum Conservation and Fedorov-Imbert Linear Shift of Acoustic Vortex Beams at a Metasurface,” Physical Review B 104, 174301 (2021). [link]

[29] Hongchen Chu, Ze-Guo Chen†, Yun Lai†, Guancong Ma†, “Wave Steering by Relaying Interface States in a Valley-Hall-Derived Photonic Superlattice,” Physical Review Applied 16, 044006 (2021). [link]

[28] Xiao Li, Pengqi Li, Ming-Hui Lu, Mathias Fink, Guancong Ma, "Negative Transient Flux in the Near Field of a Subwavelength Source," Physical Review Applied 16, L011004 (2021). [link]

[27] Weiyuan Tang, Kun Ding†, Guancong Ma†, "Direct Measurement of Topological Properties of an Exceptional Parabola," Physical Review Letters 127, 034301 (2021).[link]

[26] Changqing Xu, Ze-Guo Chen, Guanqing Zhang, Guancong Ma, Ying Wu, "Multi-Dimensional Wave Steering with Higher-Order Topological Phononic Crystal," Science Bulletin  66, 17401745 (2021). [link

[25] Ze-Guo Chen, Weiyuan Tang, Ruo-Yang Zhang, Zhaoxian Chen, Guancong Ma†, "Landau-Zener Transition in the Dynamic Transfer of Acoustic Topological States," Physical Review Letters 126, 054301 (2021). [link]

[24] Ze-Guo Chen, Weiwei Zhu, Yang Tan, Licheng Wang, Guancong Ma, "Acoustic Realization of a Four-Dimensional Higher-Order Chern Insulator and Boundary-Modes Engineering," Physical Review X 11, 011016 (2021). [link]

[23] Weiyuan Tang, Xue Jiang, Kun Ding†, Yi-Xin Xiao, Zhao-Qing Zhang, C. T. Chan, Guancong Ma†, "Exceptional Nexus with a Hybrid Topological Invariant," Science 370, 1077 (2020). [link]

[22] Ze-Guo Chen, Licheng Wang, Guanqing Zhang, Guancong Ma†, "Chiral Symmetry Breaking of Tight-Binding Models in Coupled Acoustic-Cavity Systems," Physical Review Applied 14, 024023 (2020). [link]

[21] Tuo Liu, Guancong Ma, Shanjun Liang, He Gao, Zhongming Gu, Shuowei An, Jie Zhu, “Single-Sided Acoustic Beam Splitting Based on Parity-Time Symmetry,” Physical Review B 102, 014306 (2020). [link]

[20] Weiwei Zhu, Guancong Ma†, "Distinguishing Topological Corner Modes in Higher-Order Topological Insulators of Finite Size," Physical Review B 101, 161301(R) (2020). [link]

[19] Changqing Xu, Guancong Ma†, Ze-Guo Chen, Jie Luo, Jinjie Shi, Yun Lai, Ying Wu, "Three-Dimensional Acoustic Double-Zero-Index Medium with a Fourfold Degenerate Dirac-like Point," Physical Review Letters 124, 074501 (2020). [link]

[18] Guancong Ma†§, Meng Xiao§, C. T. Chan, "Topological Phases in Acoustic and Mechanical Systems," Nature Reviews Physics 1, 281294 (2019). [link] (Review article)

Before joining HKBU


[17] Kun Ding, Guancong Ma†, Zhao-Qing Zhang, C. T. Chan, “Experimental Demonstration of an Anisotropic Exceptional Point,” Physical Review Letters 121, 085702 (2018). [link]


[16] Guancong Ma†§, Xiying Fan§, Ping Sheng, Mathias Fink, "Shaping Reverberating Sound Fields with an Actively Tunable Metasurface," PNAS 115, 6638 (2018). [link] (Featured in Physics Today)

[15] Guancong Ma†§, Xiying Fan§, Fuyin Ma, Ping Sheng, Mathias Fink, "Towards Anti-Causal Green’s Function for Three-Dimensional Sub-Diffraction Focusing,Nature Physics 14, 608–612 (2018). [link]


[14] Shubo Wang§, Guancong Ma§, C. T. Chan, "Topological Transport of Sound Mediated by Spin-Redirection Geometric Phase," Science Advances 4, eeaq1475 (2018). [link]


[13] Yi-Xin Xiao§, Guancong Ma§, Zhao-Qing Zhang, C. T. Chan, "Topological Subspace-Induced Bound State in the Continuum," Physical Review Letters 118, 166803 (2017). [link] (Editors’ Suggestion)


[12] Guancong Ma†§, Caixing Fu§, Guanghao Wang, Philipp del Hougne, Johan Christensen, Yun Lai, Ping Sheng, “Polarization Bandgaps and Fluid-like Elasticity in Fully Solid Elastic Metamaterials,” Nature Communications 7, 13536 (2016). [link]


[11] Kun Ding§, Guancong Ma§, Meng Xiao, Zhao-Qing Zhang, C. T. Chan, “Emergence, Coalescence, and Topological Properties of Multiple Exceptional Points and Their Experimental Realization,” Physical Review X  6, 021007 (2016). [link]

[10] Guancong Ma†, Ping Sheng, “Acoustic Metamaterials: From Local Resonances to Broad Horizons,” Science Advances 2, e1501595 (2016). [link] (Review article)

[9]   Min Yang, Guancong Ma, Zhiyu Yang, Ping Sheng, “Subwavelength Perfect Acoustic Absorption in Membrane-type Metamaterials: A Geometric Perspective,” EPJ Applied Metamaterials 2, 10 (2015). [link]

[8]   Meng Xiao§, Guancong Ma§, Zhiyu Yang, Ping Sheng, Zhao-Qing Zhang, C. T. Chan, “Geometric Phase and Band Inversion in Periodic Acoustic Systems,” Nature Physics 11, 240–244 (2015). [link] (Featured: News and Views in Nature Physics.)

[7]   Songwen Xiao, Guancong Ma, Yong Li, Zhiyu Yang, Ping Sheng, “Active Control of Membrane-type Acoustic Metamaterial by Electric Field,” Applied Physical Letters 106, 091904 (2015). [link]

[6]   Guancong Ma§, Min Yang§, Songwen Xiao, Zhiyu Yang, Ping Sheng, “Acoustic Metasurface with Hybrid Resonances,” Nature Materials 13, 873–878 (2014). [link] (Featured: News and Views in Nature Materials.)


[5]   Min Yang, Guancong Ma, Ying Wu, Zhiyu Yang, Ping Sheng, “Homogenization Scheme for Acoustic Metamaterials,” Physical Review B 89, 064309 (2014). [link]


[4]   Guancong Ma†, Min Yang, Zhiyu Yang, Ping Sheng, “Low-frequency Narrow-band Acoustic Filter with Large Orifice,” Applied Physics Letters 103, 011903 (2013). [link]


[3]   Min Yang§, Guancong Ma§, Zhiyu Yang, Ping Sheng, “Coupled Membranes with Doubly Negative Mass Density and Bulk Modulus,” Physical Review Letters 110, 134301 (2013). [link]


[2]   Jun Mei§, Guancong Ma§, Min Yang, Zhiyu Yang, Weijia Wen, Ping Sheng, “Dark Acoustic Metamaterials as Super Absorbers for Low-frequency Sound,” Nature Communications 3, 756 (2012). [link]

[1]   Zhiyu Yang, Hin Man Dai, Ngo-Hin Chan, Guancong Ma, Ping Sheng, “Acoustic Metamaterial Panels for Sound Attenuation in the 50–1000 Hz Regime,” Applied Physics Letters 96, 041906 (2010). [link


[1]  Jun Mei, Guancong Ma, Min Yang, Jason Yang, Ping Sheng, “Dynamic Mass Density and Acoustic Metamaterials,” in “Acoustic Metamaterials and Phononic Crystals”, (Springer Berlin Heidelberg, 2013). [link]


[32] “Tailoring MIMO Transfer of Sound Using Reflective Reconfigurable Intelligent Surfaces,” META 2023, Paris, France (Invited talk, Jul. 2023).

[31] “Acoustic and Photonic Non-Abelian Braiding,” PIERS 2023, Prague, Czech (Invited talk, Jul. 2023).

[30] “Non-Hermitian Delocalization,” PIERS 2023, Prague, Czech (Invited talk, Jul, 2023).

[29] “Non-Hermitian Extended Topological Modes,” Phononics 2023, Manchester, United Kingdom (Invited lecture, Jun. 2023).

[28] “复杂声场中多路声通讯的调控”, Metamaterials conference of China, Nanjing, China (Invited talk, May 2023).

[27] “延展拓扑态”, Metamaterials conference of China, Nanjing, China (Invited talk, May 2023).

[26] “Non-Hermitian Extended Topological Modes,” Waves in Complex Media – From Spatial to Temporal Degrees of Freedom, Cargèse, France (Contributed talk, Sep. 2022).

[25] “Non-Abelian Braiding of Sound and Light,” META 2022, online (Invited talk, Jul. 2022).

[24] “Delocalization of Topological Modes by Non-Hermitian Skin Effect,” META 2022, online (Invited talk, Jul. 2022).

[23] “Novel Topological Phononic Crystals Using Synthetic Dimensions,” PIERS 2021, Hangzhou, China (Invited talk, Apr. 2022).

[22] “Preserving Chiral Symmetry in Tight-binding Topological Phononic Crystals,” PIERS 2021, Hangzhou, China (Invited talk, Apr. 2022).

[21] “Exploring Novel Topological Phases Using Synthetic Dimensions,” Metamaterials 2021, New York, USA (Online invited talk, Sep. 2021).

[20] “An Anisotropic Order-3 Exceptional Point and Its Realization in an Acoustic System,” PIERS 2019, Xiamen, China (Invited talk, Dec. 2019).
[19] “Complex Sound Field Control Using Acoustic Metamaterials,” PIERS 2019, Xiamen, China (Invited talk, Dec. 2019).
[18] “Characterization of Phase Rigidity in Non-Hermitian Acoustic Systems,” Metamaterials 2019, Rome, Italy (Invited talk, Sep. 2019).

[17] “Wavefield Shaping for Complex Acoustic Sound”, Metamaterials 2018, Espoo, Finland (Invited talk, Aug. 2018).

[16] “Polarization Control of Elastic Waves with Metamaterials”, 10th European Solid Mechanics Conference, Bologna, Italy (Invited talk, Jul. 2018).

[15] “Controlling Reverberating Sound with an Acoustic Metasurface”, META 2018, Marseille, France (Invited talk, Jun. 2018).

[14] “Adaptive Control of Reverberating Sound Field”, IUTAM Symposium on Acoustic/elastic metamaterials, their design and applications, Beijing, China (Invited talk, Jun. 2018).

[13] “Beating Diffraction Limit using a Three-dimensional Metamaterial Absorber”, META 2017, Seoul, South Korea (Invited talk, Jul. 2017).

[12] “Solid-based Elastic Metamaterials with Fluid-like Property”, Phononics 2017, Changsha, China (Invited talk, Jun. 2017).

[11] “Sub-Diffraction Focusing through Near Perfect Absorption”, Phononics 2017, Changsha, China (Invited talk, Jun. 2017).

[10] “Topological Bound State in Continuum”, PIERS 2017, St. Petersburg, Russia (Invited talk, May 2017).

[9]   “Fluid-like Elasticity Induced by Anisotropic Effective Mass Density”, PIERS 2016, Shanghai, China (Invited talk, Aug. 2016).

[8]   “Three-dimensional Resonant Elastic Metamaterials with Fluid-like Property”, META 2016, Malaga, Spain (Invited talk, Jul. 2016).

[7]   “Zak Phase and Topological Transition in One-dimensional Phononic Crystals”, Metamaterials 2015, Oxford, United Kingdom (Contributed talk, Sep. 2015).

[6]   “Zak phase in One-dimensional Phononic Crystals”, Phononics 2015, Paris, France (Contributed talk, Jun. 2015).

[5]   “Decorated Membrane Resonators as Acoustic Metamaterials”, PIERS 2014, Guangzhou, China (Contributed talk, Aug. 2014).

[4]   “Doubly Negative Acoustic Metamaterial with Coupled Membrane Resonator,” InterNoise 2013, Innsbruck, Austria (Contributed talk, Sep. 2013).

[3]   “Acoustic Double Negativity with Coupled-membrane Metamaterial”, 21st International Congress on Acoustics, Montreal, Canada (Contributed talk, Jun. 2013).

[2]   “Broadband Membrane-type Metamaterial Panels for Sound Attenuation in the 50-1000Hz Regime”, InterNoise 2012, New York, USA (Contributed talk, Aug. 2012).

[1]   “Low-frequency Total Absorption with Membrane-type Acoustic Metamaterial”, 19th International Congress on Sound and Vibration, Vilnius, Lithuania (Contributed talk, Jul. 2012).


[9] “A Binary Spatial Sound Modulator for Adaptive Wavefield Shaping”, pending.

[8] “A Multi-functional Elastic Metamaterial”, pending.

[7] “Vibration Damped Sound Shield”, US 20170116976 A1.

[6] “Active Control of Membrane-Type Acoustic Metamaterial”, US 20160293154 A1.

[5] “Extraordinary Acoustic Absorption Induced by Hybrid Resonance and Electrical Energy Generation from Sound by Hybrid Resonant Metasurface”, US 20160078857 A1, CN 105393300 A.

[4]  “Sound Attenuating Structures”, International Patent WO 2014139323 A1.

[3]  “Acoustic Metamaterial with Simultaneously Negative Effective Mass Density and Bulk Modulus”, US 8857564 B2.

[2]  “Acoustic and Vibrational Energy Absorption Metamaterials”, US 20140060962 A1.

[1]  “Acoustic Energy Absorption Metamaterials”, US 8579073 B2.

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