Romain Fleury
EPFL STI IEL LWE
ELB 033 (Bâtiment ELB)
Station 11
1015 Lausanne
+41 21 693 56 88
+41 21 693 26 83
Office:
ELB 033
EPFL
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LWE
Web site: Web site: https://lwe.epfl.ch
Biography
Romain Fleury leads the EPFL Laboratory of Wave Engineering. He has obtained the Ph.D. degree in Electrical and Computer Engineering from the University of Texas at Austin in 2015, working with Prof. Andrea Alù. In 2016, he was a Marie-Curie Post-Doctoral Fellow at ESPCI Paris-Tech and CNRS Langevin Institute, in Paris, working with Profs. Geoffroy Lerosey, Fabrice Lemoult and Mathias Fink. He started at EPFL in 2017, in the Institute of Electrical and Micro Engineering, within the EPFL School of Engineering. His research interests include a wide variety of topics in the field of wave physics and engineering, including periodic structures, nonreciprocal wave propagation, classical topological insulators, active and time-modulated metamaterials, etc. He has co-authored more than 70 articles in scientific journals, including Science, Nature, and various Physical Review journals. He has received in 2018 an Eccellenza grant from the SNSF, and in 2021 an ERC Starting grant. He has served as Technical Program Committee chair of the European conference Eucap 2019 (1200 submissions), and editorial board member of the New Journal of Physics (IOP). He is the recipient of various teaching awards, including the 2019 STI Polysphere award and a IEL best teacher award. Finally, he is the co-founder of Minwave, a company supported by the European Space Agency, selling miniaturized microwave devices based on an invention patented by his laboratory. Minwave received various tech transfer awards, including ESA-BIC CH, FIT and Venture Kick. More information is available at https://www.epfl.ch/labs/lwe/ and https://www.minwave.ch/.Awards
Publications
Infoscience publications
Peer-reviewed publications
2024
Wave-momentum shaping for moving objects in heterogeneous and dynamic media
Nature Physics. 2024-06-21. DOI : 10.1038/s41567-024-02538-5.Experimental observation of topological transition in linear and nonlinear parametric oscillators
Physical Review E. 2024-05-10. DOI : 10.1103/PhysRevE.109.054204.Anomalous‐Chern Steering of Topological Nonreciprocal Guided Waves
Advanced Materials. 2024-05-02. DOI : 10.1002/adma.202401716.Anomalous and Chern topological waves in hyperbolic networks
Nature Communications. 2024-03-14. DOI : 10.1038/s41467-024-46551-x.Disclination states in nonreciprocal topological networks
Physical Review Research. 2024-01-10. DOI : 10.1103/PhysRevResearch.6.013031.Reduced Training Data for Laser Ultrasound Signal Interpretation by Neural Networks
Journal of Nondestructive Evaluation. 2024. DOI : 10.1007/s10921-024-01090-9.Topological photonic transport in disordered scattering networks
Lausanne, EPFL, 2024. DOI : 10.5075/epfl-thesis-10469.Optothermal shaping of lamb waves with square and spiral phase fronts
Frontiers in Acoustics. 2024. DOI : 10.3389/facou.2023.1337837.Enabling Wide Bandwidth in Substrate-Integrated Waveguide Slot Antennas by Using Low-Index Metamaterials
Physical Review Applied. 2024. DOI : 10.1103/PhysRevApplied.21.014017.2023
Optimization of elastic wave propagation in a reconfigurable medium by genetic algorithms with adaptive mutation probability
Smart Materials And Structures. 2023-08-01. DOI : 10.1088/1361-665X/ace40a.Active Acoustic Su-Schrieffer-Heeger-Like Metamaterial
Physical Review Applied. 2023-07-12. DOI : 10.1103/PhysRevApplied.20.014022.Ultrabroadband sound control with deep-subwavelength plasmacoustic metalayers
Nature Communications. 2023-05-19. DOI : 10.1038/s41467-023-38522-5.Observation of non-reciprocal harmonic conversion in real sounds
Communications Physics. 2023-05-06. DOI : 10.1038/s42005-023-01217-w.Backpropagation-free training of deep physical neural networks
Science. 2023. DOI : 10.1126/science.adi8474.RF Measurements of Unconventional Miniaturised Filters and Diplexers
2023-06-23Nonlocally-resonant metamaterials
Lausanne, EPFL, 2023. DOI : 10.5075/epfl-thesis-10467.Dual-Polarized SIW Slot Antenna Using ENZ Metamaterial for 5G and mmWave Applications
2023-01-01. 17th European Conference on Antennas and Propagation (EuCAP), Florence, ITALY, Mar 26-31, 2023. DOI : 10.23919/EuCAP57121.2023.10133482.Scattering from Time-Modulated Transmission-Line Loads: Theory and Experiments in Acoustics
Physical Review Applied. 2023. DOI : 10.1103/PhysRevApplied.19.064012.Extreme Spatial Dispersion in Nonlocally Resonant Elastic Metamaterials
Physical Review Letters. 2023. DOI : 10.1103/PhysRevLett.130.207201.Anomalous topological waves in strongly amorphous scattering networks
Science Advances. 2023-03-22. DOI : 10.1126/sciadv.adg3186.Topological MIMO Optical Signal Processing
Ieee Photonics Technology Letters. 2023-02-15. DOI : 10.1109/LPT.2022.3233702.2022
Parallel temporal signal processing enabled by polarization-multiplexed programmable THz metasurfaces
Optics Express. 2022-12-05. DOI : 10.1364/OE.471338.Electromagnetic wave-based extreme deep learning with nonlinear time-Floquet entanglement
Nature Communications. 2022-05-12. DOI : 10.1038/s41467-022-30297-5.Parallel wave-based analog computing using metagratings
Nanophotonics. 2022-03-24. DOI : 10.1515/nanoph-2021-0710.Ultra-Small Bent Meta-Waveguide Filters
2022-01-01. 16th European Conference on Antennas and Propagation (EuCAP), Madrid, SPAIN, Mar 27-Apr 01, 2022. DOI : 10.23919/EuCAP53622.2022.9769033.Dipole polarizability of time-varying particles
New Journal of Physics. 2022-06-06. DOI : 10.1088/1367-2630/ac6b4c.Effect of mechanical nonlinearity on the electromagnetic response of a microwave tunable metamaterial
Journal Of Physics D-Applied Physics. 2022-05-19. DOI : 10.1088/1361-6463/ac5209.Effects of resonator geometry and substrate stiffness on the tunability of a deformable microwave metasurface
AEU - International Journal of Electronics and Communications. 2022-01-25. DOI : 10.1016/j.aeue.2022.154123.Switchable and Simultaneous Spatiotemporal Analog Computing with Computational Graphene-based Multilayers
Carbon. 2022. DOI : 10.1016/j.carbon.2021.10.001.2021
Superior robustness of anomalous non-reciprocal topological edge states
Nature. 2021-10-13. DOI : 10.1038/s41586-021-03868-7.Reciprocal Metasurfaces for On-axis Reflective Optical Computing
IEEE Transactions on Antennas and Propagation. 2021-05-17. DOI : 10.1109/TAP.2021.3078521.Parallel Analog Computing Based on a 2×2 Multiple-Input Multiple-Output Metasurface Processor With Asymmetric Response
Physical Review Applied. 2021-04-07. DOI : 10.1103/PhysRevApplied.15.044015.Asymmetric Metal-Dielectric Metacylinders and Their Potential Applications From Engineering Scattering Patterns to Spatial Optical Signal Processing
Physical Review Applied. 2021-03-03. DOI : 10.1103/PhysRevApplied.15.034010.Subwavelength Acoustic Imaging in Far Field by Combining Metamaterials and Deep Learning
2021-01-01. 15th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), ELECTR NETWORK, Sep 20-25, 2021. p. X308-X310. DOI : 10.1109/Metamaterials52332.2021.9577076.Miniaturized Metamaterial Filters Compatible with Standard Waveguide Technology
2021-01-01. 15th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), ELECTR NETWORK, Sep 20-25, 2021. p. X197-X199. DOI : 10.1109/Metamaterials52332.2021.9577074.Ultra-Compact Ka-band Metamaterial Waveguide Filters, Fabricated by Lost-Wax Casting
2021-01-01. 51st European Microwave Conference (EuMC), London, ENGLAND, Apr 04-06, 2022. p. 269-272. DOI : 10.23919/EuMC50147.2022.9784229.Non-Hermitian time evolution: From static to parametric instability
Physical Review A. 2021-10-28. DOI : 10.1103/PhysRevA.104.042225.Subwavelength Metawaveguide Filters and Metaports
Physical Review Applied. 2021-10-08. DOI : 10.1103/PhysRevApplied.16.044010.Microwave or millimeter wave passive components or devices
US2023109939 ; EP4128433 ; CN115699446 ; WO2021191794 . 2021.Time-Varying Components for Enhancing Wireless Transfer of Power and Information
Physical Review Applied. 2021-07-07. DOI : 10.1103/PhysRevApplied.16.014017.Non-local oddities
Nature Physics. 2021-06-09. DOI : 10.1038/s41567-021-01281-5.The sound of Weyl hinges
Nature Materials. 2021-05-27. DOI : 10.1038/s41563-021-01018-y.Electromagnetic waves under nonstationary conditions, the connection with parity-time symmetry and studies on resonant systems
Lausanne, EPFL, 2021. DOI : 10.5075/epfl-thesis-9274.Multifunctional Hyperelastic Structured Surface for Tunable and Switchable Transparency
Applied Sciences. 2021-03-04. DOI : 10.3390/app11052255.Topology and broken Hermiticity
Nature Physics. 2021. DOI : 10.1038/s41567-020-01093-z.Analogue computing with metamaterials
Nature Reviews Materials. 2021. DOI : 10.1038/s41578-020-00243-2.2020
Improving sound absorption through nonlinear active electroacoustic resonators
Physical Review Applied. 2020-01-10. DOI : 10.1103/PhysRevApplied.13.014018.Parallel Optical Spatial Signal Processing Based on 2x2 MIMO Computational Metasurface
2020-01-01. 14th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), ELECTR NETWORK, Sep 28-Oct 03, 2020. p. 195-197. DOI : 10.1109/Metamaterials49557.2020.9285089.From Polarizability to Effective Permittivity of Time-Varying Materials
2020-01-01. 14th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), ELECTR NETWORK, Sep 28-Oct 03, 2020. p. 6-8. DOI : 10.1109/Metamaterials49557.2020.9285035.Analog signal processing with topological metamaterials
Lausanne, EPFL, 2020. DOI : 10.5075/epfl-thesis-8978.Topological wave insulators: a review
Comptes Rendus. Physique. 2020-11-03. DOI : 10.5802/crphys.3.Topological optomechanically induced transparency
Optics Letters. 2020-10-23. DOI : 10.1364/OL.410002.Hermitian formulation of multiple scattering induced topological phases in metamaterial crystals
Physical Review B. 2020-10-13. DOI : 10.1103/PhysRevB.102.134303.Tilted double Dirac cone and anisotropic quantum-spin-Hall topological insulator in mechanical granular graphene
New Journal of Physics. 2020-10-07. DOI : 10.1088/1367-2630/abb862.Experimental observation of the acoustic Z2 Weyl semimetallic phase in synthetic dimensions
Physical Review B. 2020-08-27. DOI : 10.1103/PhysRevB.102.064309.Robustness in Subwavelength Locally-Resonant Metamaterial Waveguides
2020-07-08. 2020 14th European Conference on Antennas and Propagation (EuCAP), Copenhagen, Denmark, March 15-20, 2020. p. 1-4. DOI : 10.23919/EuCAP48036.2020.9135562.A Subwavelength Microwave Bandpass Filter Based on a Chiral Waveguide
2020-07-08. 2020 14th European Conference on Antennas and Propagation (EuCAP), Copenhagen, Denmark, March 15-20, 2020. p. 1-5. DOI : 10.23919/EuCAP48036.2020.9135288.Far-Field Subwavelength Acoustic Imaging by Deep Learning
Physical Review X. 2020-08-07. DOI : 10.1103/PhysRevX.10.031029.Zero-Index Weyl Metamaterials
Physical Review Letters. 2020-07-28. DOI : 10.1103/PhysRevLett.125.054301.Instantaneous radiation from time-varying electric and magnetic dipoles
Physical Review A. 2020-07-06. DOI : 10.1103/PhysRevA.102.013503.Nonreciprocity in acoustic and elastic materials
Nature Reviews Materials. 2020-07-06. DOI : 10.1038/s41578-020-0206-0.Electromagnetic fields in a time-varying medium: Exceptional points and operator symmetries
IEEE Transactions on Antennas and Propagation. 2020-05-29. DOI : 10.1109/TAP.2020.2996822.Disorder‐Induced Signal Filtering with Topological Metamaterials
Advanced Materials. 2020-06-02. DOI : 10.1002/adma.202001034.Robust Fano resonance in a topological mechanical beam
Physical Review B. 2020-01-03. DOI : 10.1103/PhysRevB.101.024101.Non-reciprocal manipulation of subwavelength fields in locally-resonant metamaterial crystals
IEEE Transactions on Antennas and Propagation. 2020. DOI : 10.1109/TAP.2019.2925927.2019
Active acoustic resonators with reconfigurable resonance frequency, absorption, and bandwidth
Physical Review Applied. 2019-11-27. DOI : 10.1103/PhysRevApplied.12.054064.Robust wave transport at subwavelength scale with chiral metamaterials
2019-01-01. 21st International Conference on Electromagnetics in Advanced Applications (ICEAA), Granada, SPAIN, Sep 09-13, 2019. p. 773-773. DOI : 10.1109/ICEAA.2019.8879328.Subwavelength robust waveguiding with chiral metamaterial waveguides
2019-01-01. URSI International Symposium on Electromagnetic Theory (EMTS), San Diego, CA, May 27-31, 2019. DOI : 10.23919/URSI-EMTS.2019.8931524.Solving differential equations with topological acoustic metamaterials
Metamaterials 2019, The 13th International Congress on Artificial Materials for Novel Wave Phenomena, Roma, Italy, September 16-21, 2019.Robust Wave Transport at a Subwavelength Scale with Chiral Metamaterials
21st International Conference on Electromagnetics in Advanced Applications (ICEAA 2019), Granada, Spain, September 9-13, 2019.Experimental Observation of Topological Fano Resonances for Audible Sound
23rd International Congress on Acoustics ICA 2019, Aachen, Germany, September 9-13, 2019.Active Acoustic Resonators and their Applications to Loss-Immune, Reconfigurable, or Dynamic Metamaterials
2019 International Congress on Ultrasonics, Bruges, Belgium, September 3-6, 2019.Slow light engineering in resonant photonic crystal line-defect waveguides
Optics Express. 2019-08-30. DOI : 10.1364/OE.27.026229.Observation of topological gravity-capillary waves in a water wave crystal
New Journal of Physics. 2019-08-19. DOI : 10.1088/1367-2630/ab376a.Introduction to the special issue on non-reciprocal and topological wave phenomena in acoustics
Journal Of The Acoustical Society Of America. 2019-07-01. DOI : 10.1121/1.5119133.Nonlinear Second-Order Topological Insulators
Physical Review Letters. 2019-08-02. DOI : 10.1103/PhysRevLett.123.053902.Acoustic rat-race coupler and its applications in non-reciprocal systems
The Journal of the Acoustical Society of America. 2019-07-31. DOI : 10.1121/1.5115020.Active Electroacoustic Resonators and their Applications to Non-Hermitian Acoustics
META 2019, the 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Lisbon, Portugal, July 23-26, 2019.Acoustic Topological Fano Resonances
META 2019, the 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Lisbon, Portugal, July 23-26, 2019.Acoustic birefringence via non-Eulerian metamaterials
Journal of Applied Physics. 2019-07-18. DOI : 10.1063/1.5090839.Quantitative robustness analysis of topological edge modes in C6 and valley-Hall metamaterial waveguides
Nanophotonics. 2019-07-11. DOI : 10.1515/nanoph-2019-0137.Non-Reciprocal and Topological Wave Phenomena at the Sub-Wavelength Scale
Photonics and Electromagnetics Research Symposium, Rome, Italy, June 17-20, 2019.Chiral Metamaterials for a Robust Waveguiding Scheme
Photonics and Electromagnetics Research Symposium, Rome, Italy, June 17-20, 2019.Acoustic Topological Fano Resonances
Photonics and Electromagnetics Research Symposium, Rome, Italy, June 17-20, 2019.Enhancing subwavelength image recognition with resonant metamaterial lenses
URSI Commission B International Symposium on Electromagnetic Theory (EMTS 2019), San Diego, United Stated, 27-31 May 2019.Subwavelength robust waveguiding with chiral metamaterial waveguides
“2019 URSI Commission B International Symposium on Electromagnetic Theory” (EMTS 2019), San Diego, United Stated, 27-31 May 2019.From Non-reciprocal Acoustic Meta-Atoms to Chern Acoustic Topological Insulators
Meeting on Topological Mechanics and Fluids, Lyon, France, April 30, 2019.Introduction to topological wave phenomena and examples in acoustics
Rencontre thématique : Ondes et topologie, Besançon, France, March 28-29, 2019.From Non-reciprocal Acoustic Meta-Atoms to Time-Floquet Acoustic Topological Insulators
Stewart Blusson Quantum Matter Institute Workshop on Synthetic Topological Matter, Vancouver, Canada, February 18-20, 2019.Extraordinary wave dynamics in time-Floquet acoustic systems
META 2018 - The 9thInternational Conference on Metamaterials, Photonic Crystals and Plasmonics, Marseille, June 24 - July 1, 2018.Topological Analog Signal Processing
Nature Communications. 2019-05-03. DOI : 10.1038/s41467-019-10086-3.Coupled-mode theory for stationary and nonstationary resonant sound propagation
Wave Motion. 2019-03-28. DOI : 10.1016/j.wavemoti.2019.03.011.Active Times for Acoustic Metamaterials
Reviews in Physics. 2019-04-11. DOI : 10.1016/j.revip.2019.100031.Topological Fano Resonances
Physical Review Letters. 2019-01-08. DOI : 10.1103/PhysRevLett.122.014301.2018
Development of a wideband steerable acoustic metasurface composed of active electroacoustic resonators with COMSOL
COMSOL Conference 2018, Lausanne, Switzerland, October 22-24, 2018.Constant-pressure sound waves in non-Hermitian disordered media
Nature Physics. 2018-07-02. DOI : 10.1038/s41567-018-0188-7.Ondes acoustiques à amplitude constante dans des milieux désordonnés non-Hermitiens
14ème Congrès Français d'Acoustique (CFA 2018), Le Havre, France, April 23-27, 2018.Topological spoof-plasmon polaritons for robust waveguiding at the subwavelength scale
Nature Conference on Nanophotonics and Integrated Photonics, Nanjing, China, November 9-11, 2018.Non-Hermitian metamaterials for light and sound
Metanano 2018 - International Conference on Metamaterials and Nanophotonics, Sochi, Russia, 17-21 September 2018.Crystalline metamaterials for topological properties at the subwavelength scale
Metamaterials 2018 - The 12th International Congress on Artificial Materials for Novel Wave Phenomena, Espoo, Finland, 27 August - 1 September 2018.Teaching & PhD
Teaching
Electrical and Electronics Engineering
PhD Students
Allahverdizadeh Hossein, Mafi Alireza, Momeni Ali, Nerson Tristan Pierre Gabriel, Padlewski Mathieu François, Qin Haoye, Tuuva Tim Teemu Tapio, Wang Junda, Zhou Senlu,Past EPFL PhD Students
Bossart Aleksi Antoine , Koutserimpas Theodoros , Xiang Rongrong , Zangeneh Nejad Farzad , Zhang Zhe ,Courses
Electromagnetics I : Transmission lines and waves
The electric signal is the essential vehicle for transmitting information and energy. At high frequency, it shows itself as an electromagnetic wave whose study calls for the development of physical and mathematical models based on the wave equation.
Electromagnetics II : field computation
This course deals with electromagnetism in free space and in continuous media. Starting from the basic principles, we establish the methods for solving Maxwell's equation in vacuum and in more complex material media.
Introduction to wave scattering
This advanced theoretical course introduces students to basic concepts in wave scattering theory, with a focus on scattering matrix theory and its applications, in particular in photonics.