| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Ultrasonic scalpel based on fusiform phononic crystal structure |
| Sha Wang(王莎)1,2, Junjie Shan(单俊杰)3,†, and Shuyu Lin(林书玉)2,‡ |
1 Ocean College, Jiangsu University of Science and Technology, Zhenjiang 212100, China;
2 Shaanxi Key Laboratory of Ultrasonics, School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China;
3 National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China |
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Abstract In response to the ultrasonic scalpels with the vibrational modal coupling which leads to a decrease in efficiency, an ultrasonic scalpel based on fusiform phononic crystals (PnCs) is proposed. An accurate theoretical model is constructed, which is mainly composed of electromechanical equivalent circuit models to analyze the frequency response function and the frequency response curves of the admittance. Bragg band gaps exist in the fusiform PnCs owing to the periodic constraint, which can suppress the corresponding vibrational modes. The vibration characteristics (vibration mode, frequency, and displacement distribution) of the ultrasonic scalpel are analyzed, and the validity of the electromechanical equivalent circuit method is verified. The results indicate that other vibration modes near the working frequency can be isolated. In addition, blades based on fusiform PnCs have a function akin to that of the horn, which enables displacement amplification.
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Received: 01 June 2024
Revised: 17 July 2024
Accepted manuscript online: 01 August 2024
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PACS:
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43.40.+s
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(Structural acoustics and vibration)
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43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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43.20.+g
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(General linear acoustics)
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63.20.-e
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(Phonons in crystal lattices)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 62204112, 12174240, and 11874253) and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20220774). |
Corresponding Authors:
Junjie Shan, Shuyu Lin
E-mail: junjieshan@nju.edu.cn;sylin@snnu.edu.cn
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Cite this article:
Sha Wang(王莎), Junjie Shan(单俊杰), and Shuyu Lin(林书玉) Ultrasonic scalpel based on fusiform phononic crystal structure 2024 Chin. Phys. B 33 104302
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