Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array
Acoustic focusing with intensity modulation plays an important role in biomedical and life sciences. In this work, we propose a new approach for simultaneous phase and amplitude manipulation in sub-wavelength coupled resonant units, which has not been reported so far. Based on the equivalent impedan...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/11/12/1461 |
| _version_ | 1797505667084320768 |
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| author | Mingran Zhang Guangrui Gu |
| author_facet | Mingran Zhang Guangrui Gu |
| author_sort | Mingran Zhang |
| collection | DOAJ |
| description | Acoustic focusing with intensity modulation plays an important role in biomedical and life sciences. In this work, we propose a new approach for simultaneous phase and amplitude manipulation in sub-wavelength coupled resonant units, which has not been reported so far. Based on the equivalent impedance and refractive index modulation induced by the change of geometry, arbitrary amplitude response from 0 to 1 and phase shift from 0 to 2<i>π</i> is realized. Thus, the acoustic focusing with intensity modulation can be achieved via waveguide array. Herein, the focal length can be adjusted by alternating the length of supercell, and the whole system can work in a broadband of 0.872<i>f<sub>0</sub></i>–1.075<i>f<sub>0</sub></i>. By introducing the coding method, the thermal viscosity loss is reduced, and the wavefront modulation can be more accurate. Compared with previous works, our approach has the advantages of simple design and broadband response, which may have promising applications in acoustic communication, non-destructive testing, and acoustic holography. |
| first_indexed | 2024-03-10T04:21:48Z |
| format | Article |
| id | doaj.art-5376b57798024ba2b39d915ca915dab7 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T04:21:48Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-5376b57798024ba2b39d915ca915dab72023-11-23T07:48:03ZengMDPI AGCrystals2073-43522021-11-011112146110.3390/cryst11121461Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide ArrayMingran Zhang0Guangrui Gu1Department of Physics, College of Science, Yanbian University, Yanji 133002, ChinaDepartment of Physics, College of Science, Yanbian University, Yanji 133002, ChinaAcoustic focusing with intensity modulation plays an important role in biomedical and life sciences. In this work, we propose a new approach for simultaneous phase and amplitude manipulation in sub-wavelength coupled resonant units, which has not been reported so far. Based on the equivalent impedance and refractive index modulation induced by the change of geometry, arbitrary amplitude response from 0 to 1 and phase shift from 0 to 2<i>π</i> is realized. Thus, the acoustic focusing with intensity modulation can be achieved via waveguide array. Herein, the focal length can be adjusted by alternating the length of supercell, and the whole system can work in a broadband of 0.872<i>f<sub>0</sub></i>–1.075<i>f<sub>0</sub></i>. By introducing the coding method, the thermal viscosity loss is reduced, and the wavefront modulation can be more accurate. Compared with previous works, our approach has the advantages of simple design and broadband response, which may have promising applications in acoustic communication, non-destructive testing, and acoustic holography.https://www.mdpi.com/2073-4352/11/12/1461acoustic focusingintensity modulationacoustic waveguide |
| spellingShingle | Mingran Zhang Guangrui Gu Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array Crystals acoustic focusing intensity modulation acoustic waveguide |
| title | Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array |
| title_full | Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array |
| title_fullStr | Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array |
| title_full_unstemmed | Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array |
| title_short | Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array |
| title_sort | acoustic focusing with intensity modulation based on sub wavelength waveguide array |
| topic | acoustic focusing intensity modulation acoustic waveguide |
| url | https://www.mdpi.com/2073-4352/11/12/1461 |
| work_keys_str_mv | AT mingranzhang acousticfocusingwithintensitymodulationbasedonsubwavelengthwaveguidearray AT guangruigu acousticfocusingwithintensitymodulationbasedonsubwavelengthwaveguidearray |