Published: Jan. 1, 2024
Language: Английский
Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(2)
Published: Jan. 13, 2025
Dynamic acoustic beam manipulation via tunable metasurfaces (AMs) has attracted significant attention. However, most current AMs are primarily designed for airborne sound, feature complex structural components, and serve a singular purpose. This study proposes coding Moiré metasurface (CMM) consisting of two cascaded (ACMs) to dynamically manipulate ultrasonic beams in water. The CMM merges the characteristics can achieve different manipulations by rotating ACM changing sequence. is demonstrated presenting CMMs with stripe checkerboard patterns: former split an into omnidirectional scanning beams, while latter divided it four sections. Finally, bits employed construct samples: water unit bit “0” photosensitive resin “1.” Experimental results demonstrate that beams. proposed hold substantial potential communication dynamic detection applications.
Language: Английский
Citations
0
Composite Structures, Journal Year: 2025, Volume and Issue: unknown, P. 118873 - 118873
Published: Jan. 1, 2025
Language: Английский
Citations
0
Mechanical Systems and Signal Processing, Journal Year: 2025, Volume and Issue: 232, P. 112710 - 112710
Published: April 11, 2025
Language: Английский
Citations
0
International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 276, P. 109311 - 109311
Published: April 29, 2024
Language: Английский
Citations
2
Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 4, 2024
Abstract A customized metamaterial tailored for a specific functionality holds significant appeal in practical applications, yet its alteration after the structure is established can be challenging. novel design Fibonacci‐array inspired acoustic metamaterials introduced, which are constructed using bricks with unique physical mechanisms. This aims to achieve multifunctional low‐frequency sound absorption. The Fibonacci sequence arrangement flexibly modulates coupling between bricks, thereby improving energy‐dissipating efficiency. Additionally, strategic alignment enhances wave‐absorbing properties of metamaterial, allowing it demonstrate remarkable absorption effects across targeted frequency bands. By controlling resonance effect intensive and sparse modes, proposed exhibited frequency‐selective performance, resulting three peaks at 323, 687, 1113 Hz, respectively, low‐ high‐frequency ranges. Furthermore, broadband characterized by strong strength, enables continuous over band from 290 440 Hz. supported theoretical analysis, numerical simulations, experimental results, showcasing flexible modulation propagation characteristics waves. Overall, this functionally actuated dramatically tunability offers promising avenue application noise‐control engineering.
Language: Английский
Citations
2
Physical review. E, Journal Year: 2024, Volume and Issue: 110(6)
Published: Dec. 16, 2024
Underwater acoustic propagation has emerged as a focal point of research across various fields due to its low attenuation characteristics, particularly in applications such underwater detection, monitoring, and imaging. Based on the orbital angular momentum (OAM) degree freedom, an intriguing technique known vortex (AV) based communication is developed enhance capacity. At present, precise directional information transfer concentration signal intensity are crucial guarantee performance AV communication. Considering that beams with curved or inclined trajectories could exhibit unique advantages resolving scenarios like obstacles obstructing path, this paper intends offer general scheme actively tune beam reconfigurable transmission device, which effectively improve OAM-based systems. Here, we combine two gradient lenses circular sawtooth lens top active phased array, where center emitted quasi-Bessel can be transferred any position two-dimensional plane. In comparison traditional off-axis construction methods, our work adjust direction deliver highly concentrated signals target receiver's location, exhibits lower costs greater flexibility, holding promising prospects for widespread field
Language: Английский
Citations
1
PLoS ONE, Journal Year: 2024, Volume and Issue: 19(3), P. e0301211 - e0301211
Published: March 28, 2024
The use of tunable metasurface technology to realize the underwater tracking function submarines, which is one hotspots and difficulties in submarine design. structure-to-sound-field design approach a highly iterative process based on trial error. cumbersome inefficient. Therefore, an inverse method was proposed parallel deep neural networks. took global local target sound field feature information as input physical structure parameters output. network trained using kernel loss radial basis function, established mapping relationship between desired parameters. Finally, intensity modulation at localized range achieved. results indicated that within regulated range, this achieved average prediction error less than 5 dB for 92.9% sample data.
Language: Английский
Citations
0
Advanced Intelligent Systems, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 13, 2024
Acoustic wave devices using standing configurations have gained interest in various fields like healthcare diagnostics and manufacturing. Their functionalities span from cell sorting to microscale fiber assembly through periodic acoustic pressure fields. Conventional methods usually require parallel emitters reflective surfaces, producing constrained patterns. In this paper, an effective approach for creating versatile metasurface deflector retroreflector is introduced. The manipulates the direction of incoming waves coupled with reflect these back source. proposed design allows creation that are not by relative angles two surfaces involved customizable patterns beyond standard limits enhanced adaptability. system's effectiveness evaluated computational simulations finite element analysis experimental validation based on a 3D‐printed prototype. Results suggest between arbitrarily oriented can be produced careful retroreflector. This improve performance applications particle manipulation, thus broadening range practical implementations ultrasound acoustofluidic technologies.
Language: Английский
Citations
0
Applied Optics, Journal Year: 2024, Volume and Issue: 63(32), P. 8413 - 8413
Published: Oct. 28, 2024
In this paper, a reflective terahertz reconfigurable multifunctional coding metasurface based on topology optimization using liquid crystal (LC) is presented. First, the LC unit topologically optimized NSGA-II multi-objective algorithm. By applying bias voltage to dynamically adjust dielectric constant of LC, capable 2-bit at frequency 0.67 THz. Then, designed unit, array arrangements are reversely designed, which makes realize flexible control and dynamic switching between beam assignment vortex generation. The results show that for assignment, single-beam multi-beam can be realized with reflected electromagnetic waves continuous arbitrary angles in range elevation angle 40° azimuth 360°. Moreover, each controlled independently. Using Fourier convolution addition operation, expanded. For beam, single multi-vortex generated 360° topological charges l =±1, ±2, ±3 angles. This provides flexibility diversity generation beams. Therefore, proposed functions has certain application prospects communication, phased radar, radar.
Language: Английский
Citations
0
Published: Jan. 1, 2024
Language: Английский
Citations
0