AI Article Synopsis
- Acoustic metasurfaces are advanced two-dimensional materials that allow precise manipulation of sound waves while being very thin, making them ideal for applications like noise reduction and acoustic imaging.
- Recent research has focused on the design and classification of resonant structural units that enhance the functionality of these metasurfaces.
- The paper also explores future directions in research, particularly the potential for tunable metasurfaces to further expand their applications.
Article Abstract
Acoustic metasurfaces, as two-dimensional acoustic metamaterials, are a current research topic for their sub-wavelength thickness and excellent acoustic wave manipulation. They hold significant promise in noise reduction and isolation, cloaking, camouflage, acoustic imaging, and focusing. Resonant structural units are utilized to construct acoustic metasurfaces with the unique advantage of controlling large wavelengths within a small size. In this paper, the recent research progresses of the resonant metasurfaces are reviewed, covering the design mechanisms and advances of structural units, the classification and application of the resonant metasurfaces, and the tunable metasurfaces. Finally, research interest in this field is predicted in future.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10648603 | PMC |
| http://dx.doi.org/10.3390/ma16217044 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Parallel mechanical computing: Metamaterials that can multitask.
Proc Natl Acad Sci U S A
December 2024
Department of Mechanical and Aerospace Engineering, University at Buffalo (State University of New York), Buffalo, NY 14260-4400.
Decades after being replaced with digital platforms, analogue computing has experienced a surging interest following developments in metamaterials and intricate fabrication techniques. Specifically, wave-based analogue computers which impart spatial transformations on an incident wavefront, commensurate with a desired mathematical operation, have gained traction owing to their ability to directly encode the input in its unprocessed form, bypassing analogue-to-digital conversion. While promising, these systems are inherently limited to single-task configurations.
View Article and Find Full Text PDF3D-printed acoustic metasurface with encapsulated micro-air-bubbles for frequency-selective manipulation.
Lab Chip
December 2024
College of Engineering and Applied Sciences, Nanjing University, Jiangsu 210093, China.
Acoustic waves provide an effective method for object manipulation in microfluidics, often requiring high-frequency ultrasound in the megahertz range when directly handling microsized objects, which can be costly. Micro-air-bubbles in water offer a solution toward low-cost technologies using low-frequency acoustic waves. Owing to their high compressibility and low elastic modulus, these bubbles can exhibit significant expansion and contraction in response to even kilohertz acoustic waves, leading to resonances with frequencies determined and tuned by air-bubble size.
View Article and Find Full Text PDFA Compact Low-Frequency Acoustic Perfect Absorber Constructed with a Folded Slit.
Materials (Basel)
December 2024
Xi'an Key Laboratory of Extreme Environment and Protection Technology, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Tunable perfect acoustic absorption at subwavelength thickness has been a prominent topic in scientific research and engineering applications. Although metamaterials such as labyrinthine metasurfaces and coiling-up-space metamaterials can achieve subwavelength low-frequency acoustic absorption, efficiently realizing tunable absorption under uniform and limited size conditions remains challenging. In this paper, we introduce a folded slit to enhance the micro-slit acoustic absorber, effectively improving its low-frequency acoustic absorption performance and successfully achieving a perfect acoustic absorption coefficient of 0.
View Article and Find Full Text PDFCoherent perfect loss with single and broadband resonators at photonic crystal nanobeam.
Nanophotonics
February 2024
Department of Physics, Kookmin University, Seoul 02707, Republic of Korea.
Coherent perfect absorption (CPA) has been studied in various fields, such as metasurface, photonics, and acoustics, because of its ability to perfectly absorb light at a specific wavelength. However, the narrow bandwidth of CPA makes its application to on-chip photonics challenging. This limitation can be overcome by using a broadband resonator.
View Article and Find Full Text PDFInteger multi-wavelength gradient phase metagrating for perfect refraction: Phase choice freedom in supercella).
J Acoust Soc Am
November 2024
School of Physical Science and Technology, Soochow University, Suzhou 215006, China.
Phase gradient metagratings (PGMs) reshape the impinging wavefront though the interplay between the linear adjacent phase increment inside supercells and the grating diffraction of supercells. However, the adjacent phase increment is elaborately designed by tuning the resonance of each subcell at a certain target frequency, which inevitably confines PGMs to operate only at the single frequency in turn. We notice that there exists a freedom of phase choice with a multi-2π increment in a supercell of PGMs, whereas conventional designs focus on the 2π increment.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!