Article
Optics
Danfu Liang, Lexter Savio Rodriguez, Haitao Zhou, Yifu Zhu, Hebin LI
Summary: We report an experimental demonstration of optical two-dimensional coherent spectroscopy (2DCS) in cold atoms. The experiment successfully obtained two-dimensional spectra of cold rubidium atoms and demonstrated the importance of performing 2DCS in cold atoms.
Article
Acoustics
Xiao-Shuang Li, Xiao-Lei Tang, Xiao-Xing Su, Chuanzeng Zhang, Yue-Sheng Wang
Summary: In this study, three-dimensional phononic crystal-based coupled resonator waveguides (PnCCRWs) are proposed for guiding acoustic waves along complex routes. The interaction between the PnC point defects is described by the tight-binding model, enabling the propagation of acoustic wave energy along designated paths.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Physics, Multidisciplinary
Yawen Fang, Yang Xu, Kaifei Kang, Benyamin Davaji, Kenji Watanabe, Takashi Taniguchi, Amit Lal, Kin Fai Mak, Jie Shan, B. J. Ramshaw
Summary: Surface acoustic waves (SAWs) provide a contactless method for measuring wave-vector-dependent conductivity. In this study, SAW resonant cavities fabricated on LiNbO3 substrates were used to access the quantum Hall regime of high-mobility, hexagonal boron nitride encapsulated, graphene heterostructures. The results indicate that SAW resonant cavities can be a viable platform for contactless conductivity measurements in the quantum transport regime of van der Waals materials.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Yu-xiang Han, Hao Chen, Wenxiao Liu, Jiao-jiao Xue, Hong-rong Li
Summary: This paper explores the dynamics of spin wave exchange between two dipole-coupled atomic ring arrays and finds that subradiant spin waves lead to low-loss and high efficiency of ring-to-ring transfer. The optimal spin wave exchange occurs at appropriate separations between coplanar rings. The rotation of the rings and the orientation of transition dipole moments also affect the effectiveness of the interaction between the rings.
NEW JOURNAL OF PHYSICS
(2023)
Article
Optics
Jieli Yan, Stephen Revesz, Danfu Liang, Hebin Li
Summary: Optical two-dimensional coherent spectroscopy (2DCS) is a useful tool for studying energy level structure and dynamics in atomic ensembles. In this study, a broadband optical 2DCS experiment was conducted on rubidium atoms, which have different D line characteristics compared to potassium atoms. The experimental results were consistent with simulated spectra based on the perturbation solutions. This work allows for the study of many-body interactions and correlations in rubidium atoms using double-quantum and multiquantum 2DCS.
Article
Physics, Multidisciplinary
R. Ito, S. Takada, A. Ludwig, A. D. Wieck, S. Tarucha, M. Yamamoto
Summary: A coherent beam splitter has been developed for single electrons passing through two tunnel-coupled quantum wires by surface acoustic waves (SAWs). The oscillation of output current with gate voltages allows for encoding a flying qubit, with oscillation visibility currently limited to around 3% but robust against decoherence. The SAW-driven single electrons show promise as a novel platform for a solid-state flying qubit.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
ShaoGang Yu, YiFeng Geng, DanFu Liang, HeBin Li, XiaoJun Liu
Summary: We report a novel double-quantum-zero-quantum two-dimensional coherent spectroscopy (2DCS) that allows direct detection of quantum coherence between multiparticle collective states. This technique provides a new avenue for studying the coherent coupling of highly excited states and many-body properties.
Article
Chemistry, Multidisciplinary
Linhao Shi, Weipeng Xuan, Biao Zhang, Shurong Dong, Hao Jin, Jikui Luo
Summary: FBAR-based filters using 2D phononic crystals as acoustic energy reflection layers achieve high reflectivity and wide bandgaps, showing good performance within a broad frequency range. The impedance spectra of such filters are smooth, with minimal spurious modes, demonstrating the potential for wide bandwidth and high power capability.
Article
Chemistry, Analytical
Yuan Ning, Menglun Zhang, Hongxiang Zhang, Xuexin Duan, Yi Yuan, Buohua Liu, Wei Pang
Summary: This study explores the mechanism of a new acoustic micro-ejector using a Lamb wave transducer array, which can stably generate picoliter droplet jetting through a combination of acoustic pressure waves and acoustic streaming. Experimental results demonstrate that the ejector can continuously produce uniform small water droplets at a high rate, thanks to a large liquid height window and high ejection stability, making it suitable for demanding biochemical applications.
Article
Physics, Applied
Ahmet Bicer, Mehmet Gunay, Nurettin Korozlu, Ahmet Cicek
Summary: A Fano-like asymmetric line shape in a side-coupled series Helmholtz resonator array-waveguide system is continuously tuned using a one-dimensional surface phononic crystal. The quality factor and dip position of the transmission spectrum can be finely adjusted by varying waveguide width or surface phononic crystal groove depth.
APPLIED PHYSICS LETTERS
(2022)
Article
Crystallography
Jianning Han, Guodong Hao, Wenying Yang, Xinsa Zhao
Summary: In the field of industrial structure detection, acoustic signals play a pivotal role. This study proposes a structure (PC-Mie) that couples phononic crystal (PC) point defects and Mie resonance structures (Mies) to enhance weak effective signals from complex environments. Numerical and experimental studies demonstrate that the PC-Mie can effectively enhance the energy of specific sound frequencies in complex air environments, making it suitable for collecting high-sensitivity acoustic signals. This research has significant implications for the development of weak acoustic signal detection technology and the application of self-powered sensors.
Article
Physics, Multidisciplinary
Danfu Liang, Yifu Zhu, Hebin Li
Summary: This article reports the observation of collective resonance of rubidium atoms in a higher excited state, in addition to the first excited state, through spectroscopy. The collective resonance is excited using a double-quantum four-pulse excitation sequence. The experimental technique provides a new approach for preparing and probing collective resonances of atoms in highly excited states.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Applied
Nicolas Laforge, Richard Wiltshaw, Richard V. Craster, Vincent Laude, Julio Andres Iglesias Martinez, Guillaume Dupont, Sebastien Guenneau, Muamer Kadic, Mehul P. Makwana
Summary: This study demonstrates the experimental realization of complex topological phononic circuits using square and rectangular phononic crystals, showcasing exotic topological transport. The underlying structure must belong to square or rectangular lattice systems rather than hexagonal-based structures. Numerical simulations and experiments illustrate highly resolved edge states, paving the way for incorporation into acoustical devices.
PHYSICAL REVIEW APPLIED
(2021)
Article
Physics, Fluids & Plasmas
Y. Miyazawa, C. Chong, P. G. Kevrekidis, J. Yang
Summary: This work presents a theoretical and numerical study of rogue and solitary waves in a one-dimensional nonlinear lattice that involves axial and rotational degrees of freedom. Analytical approximations derived from coupled nonlinear Schrodinger-type equations are found to agree with numerical simulations. The spontaneous formation of rogue-wave-like patterns in the lattice using Gaussian initialization data is also observed. The lattice demonstrates both energy isolation and exchange between axial and rotational degrees of freedom, suggesting its potential as an efficient energy isolation, transfer, and focusing medium.
Article
Physics, Applied
Shaopeng Liu, Renxiang Cheng, Zhipeng Qi, Ying Li, Bo Liu, Wen-Xing Yang
Summary: An efficient method for detecting time-dependent acceleration (TDA) is achieved by utilizing electromechanically induced phononic sidebands in coupled frequency-mismatched electromechanical resonators. The nonlinear responses of normal and anomalous phononic sidebands are generated and enhanced in the strong inter-modal coupling regime. The TDA information is transmitted through the spectral responses of acceleration-induced sidebands (AISs), and the amplitude and variation period of TDA can be separately detected.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Aerospace
Qingxiang Ji, Xueyan Chen, Vincent Laude, Jun Liang, Guodong Fang, Changguo Wang, Rasoul Alaee, Muamer Kadic
Summary: Infrared camouflage based on artificial thermal metasurfaces has become a hot topic recently. It aims to hide specific objects from infrared detection by eliminating the thermal radiation differences between the object and the background. This article presents a simple and practicable design for infrared stealth using a multilayer film, which offers advantages in scalability, flexible fabrication, and structural simplicity. The multilayer medium consists of a silicon substrate, carbon layer, and zinc sulfide film, and its optical properties are determined using the transfer matrix method. By locally changing the thickness of the coating film, the spatial tunability and continuity in thermal emission are demonstrated, achieving thermal camouflage functionality. Moreover, thickness-engineered multilayer films also demonstrate other functionalities such as thermal illusion and thermal coding.
CHINESE JOURNAL OF AERONAUTICS
(2023)
Article
Chemistry, Multidisciplinary
Feng Gao, Sarah Benchabane, Amine Bermak, Shurong Dong, Abdelkrim Khelif
Summary: This article reports a micron-scale phononic waveguide constructed by line defects in PnCs, which enables on-chip, tightly confined guiding, bending, and splitting of surface acoustic waves (SAWs). The proposed phononic waveguides demonstrate the feasibility of precise local manipulation of SAW that is essential for emerging frontier applications, notably for phonon-based classical and quantum information processing.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Mechanics
Ting-Ting Wang, Yan-Feng Wang, Zi-Chen Deng, Vincent Laude, Yue-Sheng Wang
Summary: In this study, we investigated the propagation of acoustoelastic waves in a two-dimensional phononic metaplate through numerical simulations and experiments. By selectively emptying certain cups, reconfigurable coupled-resonator acoustoelastic waveguides were created, and the 90 degrees bent waveguides and the collective resonances of the aperiodic chain were observed. The experimental results were compared to a three-dimensional finite element model, taking fluid-structure interaction into account. This study demonstrates the potential for designing reconfigurable and programmable elastic wave devices.
COMPOSITE STRUCTURES
(2023)
Review
Nanoscience & Nanotechnology
Anastasiia O. Krushynska, Daniel Torrent, Alejandro M. Aragon, Raffaele Ardito, Osama R. Bilal, Bernard Bonello, Federico Bosia, Yi Chen, Johan Christensen, Andrea Colombi, Steven A. Cummer, Bahram Djafari-Rouhani, Fernando Fraternali, Pavel I. Galich, Pedro David Garcia, Jean-Philippe Groby, Sebastien Guenneau, Michael R. Haberman, Mahmoud I. Hussein, Shahram Janbaz, Noe Jimenez, Abdelkrim Khelif, Vincent Laude, Mohammad J. Mirzaali, Pawel Packo, Antonio Palermo, Yan Pennec, Ruben Pico, Maria Rosendo Lopez, Stephan Rudykh, Marc Serra-Garcia, Clivia M. Sotomayor Torres, Timothy A. Starkey, Vincent Tournat, Oliver B. Wright
Summary: This review article provides a summary of recent advances and hot research topics in nanophononics and elastic, acoustic, and mechanical metamaterials based on the authors' presentations at the EUROMECH 610 Colloquium. Unlike a conventional review, it focuses on the state-of-the-art and emerging research directions in these fields rather than historical viewpoints. The article covers basic definitions, design strategies, analysis techniques, and discussions of challenges and applications in each topic, offering valuable insights for early-career researchers and others interested in these areas.
Article
Engineering, Mechanical
Vincent Laude, Julio Andres Iglesias Martinez, Nicolas Laforge, Muamer Kadic, Emil Prodan
Summary: Nodal points can be synthesized at crystal interfaces using glide-reflection symmetries. In a square-lattice phononic crystal, the nodal point was previously observed at the X point, but in this study, it is shown that by considering quarter-lattice-constant glide-reflection symmetry, the nodal point can be moved to the Gamma point. Continuous grading along the x-axis does not significantly affect the band structure, allowing topological interface waves to survive even when glide-reflection symmetry is locally valid.
ACTA MECHANICA SINICA
(2023)
Article
Chemistry, Multidisciplinary
Krzysztof K. Dudek, Julio A. Iglesias A. Martinez, Gwenn Ulliac, Laurent Hirsinger, Lianchao Wang, Vincent Laude, Muamer Kadic
Summary: A novel micro-scale mechanical metamaterial is proposed that can significantly change its mechanical and wave propagation properties without rebuilding the structure. The reconfiguration process can be induced and controlled remotely through the application of a magnetic field using appropriately distributed magnetic inclusions.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
Lea La Spina, Quentin Micard, Alexis Mosset, Samuel Margueron, Ausrine Bartasyte, Vincent Laude
Summary: Epitaxial thin films of lithium niobate were grown by direct liquid injection chemical vapor deposition on c-sapphire substrates, exhibiting different families of high-frequency surface acoustic waves. Surface Brillouin light scattering measurements and fast finite element analysis revealed Rayleigh, leaky shear, and leaky longitudinal surface waves excited at frequencies between 10 and 30 GHz, without the need for high-frequency surface acoustic wave transducers.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Mechanical
Shu-Yan Zhang, Jia-Chen Luo, Yan-Feng Wang, Vincent Laude, Yue-Sheng Wang
Summary: The study investigates the propagation of evanescent waves in hybrid poroelastic metamaterials by considering interface effects. Finite element model is established for elastic/poroelastic and fluid/poroelastic interfaces, and general forms for Bloch's theorem are obtained to calculate the complex band structure and frequency response of hybrid metamaterials. The study discusses the influence of geometrical and material parameters, as well as the viscosity of the pore fluid on the propagation of elastic waves. The results and discussions show the appearance of flat bands, locally resonant band gaps, and a transition from avoided crossing to wave-number band gaps, among other findings.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Hamza Baali, Mahmoud Addouche, Abdesselam Bouzerdoum, Abdelkrim Khelif
Summary: In this study, the authors propose an efficient data-driven approach for analyzing and designing membrane-type sound absorbers with desirable properties. They use a neural network to map the input parameters to the observed sound absorption spectrum and then infer the input parameters that produce the desired absorption response. Two devices are fabricated and their measured acoustic absorption responses show a close agreement with the desired responses.
COMMUNICATIONS MATERIALS
(2023)
Article
Mechanics
K. K. Dudek, L. Mizzi, J. A. Iglesias Martinez, A. Spaggiari, G. Ulliac, R. Gatt, J. N. Grima, V. Laude, M. Kadic
Summary: The ability to control Poisson's ratio of functional materials is essential for the development of efficient structures in various fields. This study proposes novel microscopic 2D and 3D functionally-graded mechanical metamaterials that can exhibit a wide range of Poisson's ratio depending on their composition. The research also explores the dynamic properties of these structures, specifically how the variation in composition affects wave propagation velocity. This has significant implications for applications involving wave attenuation or sensors.
COMPOSITE STRUCTURES
(2023)
Article
Multidisciplinary Sciences
Lianchao Wang, Julio A. Iglesias Martinez, Gwenn Ulliac, Bing Wang, Vincent Laude, Muamer Kadic
Summary: In this paper, a model for non-reciprocal and non-Newtonian mechanical metamaterials is demonstrated by combining the concept of local resonances and fixing boundaries. Via computational models and impact experiments, the authors show that stiffness substantially changes as a function of the loading velocity.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Applied
Yu-Ze Tian, Xiao-Lei Tang, Yan-Feng Wang, Vincent Laude, Yue-Sheng Wang
Summary: Extensive research has been conducted on the design of metasurfaces, particularly focusing on strategies based on impedance theory. In this study, an annular acoustic impedance metasurface is introduced in a cylindrical shell waveguide for encrypted information storage. Numerical simulation and experimental verification demonstrate the successful retrieval of hidden messages. The findings of this work are expected to contribute to the development of impedance metasurfaces in acoustic holography and encrypted acoustic communications.
PHYSICAL REVIEW APPLIED
(2023)
Article
Materials Science, Multidisciplinary
Vincent Laude, Yan-Feng Wang
Summary: Open phononic systems in unbounded media can support localized phonons with complex frequencies. The concept of elastic quasinormal modes (QNMs) is introduced to describe these systems, similar to nanophotonic and plasmonic open systems. A complex, unconjugated form of reciprocity theorem for elastodynamics is used to accurately approximate the response function based on the elastic QNM basis. The elastic Purcell effect is then described by a complex-valued modal volume for each QNM. Validation is performed through simulations of vibrating nylon rod, slender nickel ridge, and nanoscale tuning fork, all showing agreement with the elastodynamic equation.
Article
Physics, Applied
Fehima Ugarak, Julio A. Iglesias Martinez, Alexis Mosset, Vincent Laude
Summary: Brillouin light scattering is a versatile technique for measuring the dispersion of acoustic phonons in materials. In this paper, the problem of measuring anisotropic single crystals with trigonal symmetry using a single sample is considered. The authors successfully estimated the elastic constants and piezoelectric constants of sapphire and lithium niobate using this method.
JOURNAL OF APPLIED PHYSICS
(2023)