Article
Acoustics
Nurettin Korozlu, Ahmet Bicer, Done Sayarcan, Olgun Adem Kaya, Ahmet Cicek
Summary: In this study, a two-dimensional phononic crystal linear defect waveguide is used to sort solid particles of different sizes in the air through acoustic radiation force. The proposed approach can be employed in applications where contact-free separation of airborne particles is required.
Article
Chemistry, Physical
Liang Zhang, Ting Tan, Zhengyue Yu, Zhimiao Yan
Summary: This study proposes a method to improve the localization of elastic waves in phononic crystals by introducing topological imbalance and semi-enclosed defects. Parametric equations are used to generate lattice unit cells with topological evolution and band gap widening is achieved by increasing topological imbalance. Experimental results show that phononic crystals with semi-enclosed line defects have the best energy confinement effect.
Article
Nanoscience & Nanotechnology
Yueting Wang, Jian Li, Yuxin Fu, Ronghao Bao, Weiqiu Chen, Yue-Sheng Wang
Summary: The article investigates the deformation behavior and wave propagation characteristics of a defected phononic crystal, showing that localized states appear due to the presence of the line defect. The results suggest that the phononic crystal with line defect can control guided waves through uniaxial compression, paving a new way for designing tunable elastic waveguides.
Article
Engineering, Mechanical
Tinggui Chen, Bo Wu, Dejie Yu
Summary: This paper proposes a two-dimensional line-defect phononic crystal for weak signal detection. The line-defect phononic crystal can trap and enhance the incident acoustic wave at the resonance frequency, filtering out noise and obtaining fault signals with high signal-to-noise ratios.
FRONTIERS OF MECHANICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Yang Li, Adrian Diaz, Xiang Chen, David L. McDowell, Youping Chen
Summary: The transient processes of phonon scattering and transmission in Si phononic crystals with periodic pores are simulated using the concurrent atomistic-continuum method. The study reveals the dependence of phonon transport on the relation between the phonon wavelength, period length, and neck width of the phononic crystal. Three distinct regimes of phonon transport are observed, each with different characteristics and dominant modes of transport.
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
Nanoscience & Nanotechnology
Soo-Ho Jo, Yong Chang Shin, Wonjae Choi, Heonjun Yoon, Byeng D. Youn, Miso Kim
Summary: This study investigates elastic wave localization in a phononic crystal with double defects by analyzing numerical and experimental results, revealing the mechanism of defect band splitting. Experimental results confirm that interaction between double defects leads to defect band splitting, and the degree of splitting is influenced by the inter-distance combinations of the defects.
Article
Materials Science, Multidisciplinary
Chao Ma, Shiheng Zhao, Jianbo Zhang, Zheng Chang
Summary: Inspired by spider capture silk, a lightweight and tunable one-dimensional (1D) bead-chain phononic lattice (BCPL) with adjustable bandgaps is reported. The width and midfrequency of the bandgaps depend on the shear modulus and mass density of the beads, while axial pre-stretching allows for flexible tunability. A two-dimensional (2D) BCPL, mimicking the local morphology of an orb-web, is proposed and its wave filtering and directional transmission capabilities are verified through numerical simulations. This work provides insights for the design and development of lightweight tunable elastic wave modulation devices.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Optics
Yuqing Xie, Limin Song, Wenchao Yan, Shiqi Xia, Liqin Tang, Daohong Song, Jun-Won Rhim, Zhigang Chen
Summary: Researchers experimentally realize fractal-like photonic lattices and observe distinct compact localized states associated with different flatbands. By proper phase modulation, they demonstrate not only the simplest localized states, but also their superimposition into other complex mode structures. The results are supported by theoretical analysis.
Article
Engineering, Mechanical
Panxue Liu, Shuguang Zuo, Xudong Wu, Siyue Chen, Yi Kong
Summary: This study proposes a compact and hybrid muffler phononic crystal to achieve broadband and strong sound attenuation. The transmission loss (TL) of a unit cell is calculated using the 2D transfer matrix method and validated through numerical simulation and experiment. The study reveals the sound reduction mechanism and examines the effect of the period number on the acoustic performance. The results show that the compact structure of the short-length mufflers enables continuous and superior attenuation band through acoustic resonant behaviors.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Physics, Applied
Soo-Ho Jo, Donghyu Lee, Heonjun Yoon, Byeng D. Youn
Summary: The integration of defect-introduced phononic crystals (PnCs) and piezoelectric materials has led to the development of new conceptual products for energy harvesting, wave filtering, and ultrasonic sensing. However, previous work has been limited to single-defect situations. This study aims to expand the PnC design space into double defects to make ultrasonic transducers useful at multiple frequencies. The study focuses on longitudinal wave generation and modifies a previous analytical model to predict the wave-generation performance under a double-defect situation. Two parametric studies analyze the effect of input voltage setting and spacing between double defects on output responses. These ultrasonic transducers have potential applications in nondestructive testing and ultrasonic imaging.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Physics, Fluids & Plasmas
B. L. Kim, C. Chong, S. Hajarolasvadi, Y. Wang, C. Daraio
Summary: In this study, the response of a one-dimensional phononic lattice with time-periodic elastic properties is investigated in both linear and nonlinear regimes using experimental, numerical and theoretical approaches. It is found that wave-number band gaps emerge under small-amplitude excitation, while large-amplitude responses are stabilized via the nonlinear nature of the magnetic interactions, resulting in a family of nonlinear time-periodic states. Controlling acoustic and elastic wave propagation by balancing nonlinearity and external modulation offers potential applications in signal processing and telecommunication devices.
Article
Engineering, Mechanical
Soo-Ho Jo, Heonjun Yoon, Yong Chang Shin, Byeng D. Youn
Summary: Phononic crystals have the ability to manipulate elastic waves, with this study proposing an analytical model to reveal the fundamental mechanisms behind defect-mode-enabled energy localization. The study demonstrates that defect-mode shapes are normal modes, and that evanescent waves in a band gap play a crucial role in the formation and splitting of defect bands.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Acoustics
Yan Li, Yangjun Luo, Xiaopeng Zhang
Summary: In this study, a multiple band gap topological optimization strategy is proposed to design a two-dimensional phononic crystal with multiple band gaps. The optimized designs achieve multifrequency localization effects in in-plane or out-of-plane modes, promoting the application of phononic crystals in energy harvesting technologies.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Acoustics
Shaoqiong Yang, Hao Chang, Yanhui Wang, Ming Yang, Tongshuai Sun
Summary: In this study, a suspension system based on phononic crystals is designed for vibration isolation of acoustic loads in underwater gliders. The vibration properties of the phononic crystals and the effects of physical parameters on the underwater attenuation zones are investigated. Vibration tests show that the phononic crystal suspension system has a stable vibration isolation effect in the frequency range of 120-5000 Hz.
Article
Physics, Multidisciplinary
Li Ning, Yi-Ze Wang, Yue-Sheng Wang
Summary: This paper introduces a new type of active elastic metamaterials with cavities and an acoustic concentrator. By using feedback control on piezoelectric diaphragms, controllable effective bulk modulus and density within a wide frequency range can be achieved. Based on the coordinate transformation method and feedback control on the periodic arrangement of acoustic cavities, a multilayered alternative homogeneous materials acoustic concentrator can be achieved.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
Article
Physics, Applied
Tian-Xue Ma, Yan-Feng Wang, Xiao-Shuang Li, Chuanzeng Zhang, Yue-Sheng Wang
Summary: This paper investigates the viscoelastic effect on the topologically protected interface states in two-dimensional solid phononic crystals (PnCs). It demonstrates that even with the introduction of material viscoelasticity, the topological interface states still exist but become complex wave modes that attenuate as they propagate in the viscoelastic PnCs. The findings also show the robustness of these interface states against sharp bends or local disorders in the viscoelastic PnC structures.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Mechanical
Tian-Xue Ma, Quan-Shui Fan, Chuanzeng Zhang, Yue-Sheng Wang
Summary: In this study, a 3D-printed phononic crystal (PnC) beam with a topological interface state is designed for harvesting the mechanical energy of flexural waves. By changing the distance between grooves, PnC beams with different topological phases can be achieved and the existence of the topological interface state is verified both numerically and experimentally. By attaching a piezoelectric disc at the interface, the mechanical energy can be converted into electricity. The PnC harvester shows significantly amplified output power at the frequency corresponding to the interface state compared to traditional beam harvesters.
EXTREME MECHANICS LETTERS
(2022)
Article
Chemistry, Analytical
Li-Bo Wu, Yu-Feng Fan, Feng-Bo Sun, Kai Yao, Yue-Sheng Wang
Summary: In this paper, a nonlinear Magnetoelastic Energy (ME) model is proposed with a material parameter related to electron interactions. The model includes an attenuating term in the formula, which can predict the variation in the anisotropic magneto-crystalline constants induced by external stress more accurately than the classical linear ME. The model can accurately predict the domain wall velocity under stress and magnetic field, and it is concise and easy to use.
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, Applied
Xiao-Lei Tang, Tian-Xue Ma, Yue-Sheng Wang
Summary: In this work, the topological rainbow trapping and energy amplification of acoustic waves in a gradient phononic crystal structure is investigated numerically and experimentally. Topological interface states (TISs) are generated along the interface between two phononic crystals with different topological phases due to the acoustic valley Hall effect. Rainbow trapping is achieved by introducing gradient into a 3D-printed phononic crystal structure by varying the geometrical parameter of scatterers along the interface. Incident acoustic waves at different frequencies split, stop, and are significantly amplified at different positions. Importantly, the rainbow trapping of TISs is immune to random structural disorders. The topological rainbow trapping shows promise for the design of broadband energy harvesters with excellent robustness.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Xuan-Bo Miao, Hao-Wen Dong, Sheng-Dong Zhao, Shi-Wang Fan, Guoliang Huang, Chen Shen, Yue-Sheng Wang
Summary: Unlike holography technique using active sound source arrays, metasurface-based holography can achieve high-quality holographic images with a single transducer, although it requires individually designed elements with unique modulation capabilities. This paper presents a deep-learning-aided inverse design approach for reconstructing megapixel images using an acoustic metasurface-based hologram with millions of elements. An iterative compensation algorithm is proposed to improve imaging quality by removing interference fringes and unclear details. Experimental validation using a 30x30 three-dimensional printed metasurface shows that sparse arrangement of elements can produce high-quality images even with fewer elements than the targeted image pixels.
APPLIED PHYSICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Hong-Tao Zhou, Shao-Cong Zhang, Tong Zhu, Yu-Ze Tian, Yan-Feng Wang, Yue-Sheng Wang
Summary: Extreme impedance mismatch at water-air interfaces hampers cross-media applications such as ocean-air wireless acoustic communication. By employing impedance-matched hybrid metasurfaces assisted by topology optimization, independent sound transmission enhancement and phase modulation across the water-air interface are achieved. Experimental results show significant improvements in transmitted amplitude, with an enhancement of approximately 25.9 dB compared to the bare water-air interface and up to 42 dB with axial focusing function, enabling various customized vortex beams and promoting applications in ocean-air communication.
Article
Physics, Applied
Shi-Wang Fan, Wen-Qi Wang, Hao-Wen Dong, Jinxi Liu, Hao-Bo Qi, Yue-Sheng Wang
Summary: The study proposes a broadband acoustic metasurface capable of generating acoustic vortices with orbital angular momentum. Through optimization design, the metasurface achieves high-efficiency transmission in a wide frequency range. This breakthrough has significant implications for the development of devices such as acoustic tweezers, antennas, and spanners.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Kuan-Xin Huang, Guo-Shuang Shui, Yi-Ze Wang, Yue-Sheng Wang
Summary: In this study, the propagation and kinking of an interface crack between two dissimilar artificial periodic structures with local resonators were investigated. It was found that the crack kinking could be prohibited in the proposed artificial periodic structures, demonstrating the meta-arrest property of the structures.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(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
Nanoscience & Nanotechnology
Shi-Wang Fan, Wen-Qi Wang, Jinxi Liu, Xu Liao, Jingzhe Zhang, Yue-Sheng Wang
Summary: This study proposes a single-layer lossless metasurface for adjusting the asymmetric transmission of flexural waves. The design allows for efficient symmetric and asymmetric transmissions without the need for additional active modules or passively multilayered designs, and demonstrates a high contrast ratio of transmitted energy within a wide-angle range.
Article
Optics
Tian-Xue Ma, Jing Liu, Chuanzeng Zhang, Yue-Sheng Wang
Summary: This paper demonstrates the realization of one-dimensional topological insulators for electromagnetic and mechanical waves using phoxonic crystal cavity chains. The topological edge and interface states for both types of waves are observed in finite-sized cavity chains, showing potential applications in signal processing, sensing, and optomechanics.
