Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field
Microbubbles have the potential to be used for diagnostic imaging and therapeutic delivery. However, the transition from microbubbles currently being used as ultrasound contrast agents to achieve its’ potentials in the biomedical field requires more in depth understanding. Of particular importance i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Penerbit UMP
2020
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| Online Access: | http://umpir.ump.edu.my/id/eprint/29517/ http://umpir.ump.edu.my/id/eprint/29517/7/Nonlinear%20dynamics%20of%20a%20shell%20encapsulated.pdf |
| _version_ | 1848823295772721152 |
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| author | N. M., Ali Fatimah, Dzaharudin E. A., Alias |
| author_facet | N. M., Ali Fatimah, Dzaharudin E. A., Alias |
| author_sort | N. M., Ali |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Microbubbles have the potential to be used for diagnostic imaging and therapeutic delivery. However, the transition from microbubbles currently being used as ultrasound contrast agents to achieve its’ potentials in the biomedical field requires more in depth understanding. Of particular importance is the influence of microbubble encapsulation of a microbubble near a vessel wall on the dynamical behaviour as it stabilizes the bubble. However, many bubble studies do not consider shell encapsulation in their studies. In this work, the dynamics of an encapsulated microbubble near a boundary was studied by numerically solving the governing equations for microbubble oscillation. In order to elucidate the effects of a boundary to the non-linear microbubble oscillation the separation distances between microbubble will be varied along with the acoustic driving. The complex nonlinear vibration response was studied in terms of bifurcation diagrams and the maximum radial expansion. It was found that the increase in distance between the boundary and the encapsulated bubble will increase the oscillation amplitude. When the value of pressure amplitude increased the single bubble is more likely to exhibit the chaotic behaviour and maximum radius also increase as the inter wall-bubble distance is gradually increased. While, with higher driving frequency the maximum radial expansion decreases and suppress the chaotic behaviour. |
| first_indexed | 2025-11-15T02:54:52Z |
| format | Article |
| id | ump-29517 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:54:52Z |
| publishDate | 2020 |
| publisher | Penerbit UMP |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-295172020-12-08T09:12:18Z http://umpir.ump.edu.my/id/eprint/29517/ Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field N. M., Ali Fatimah, Dzaharudin E. A., Alias T Technology (General) TJ Mechanical engineering and machinery Microbubbles have the potential to be used for diagnostic imaging and therapeutic delivery. However, the transition from microbubbles currently being used as ultrasound contrast agents to achieve its’ potentials in the biomedical field requires more in depth understanding. Of particular importance is the influence of microbubble encapsulation of a microbubble near a vessel wall on the dynamical behaviour as it stabilizes the bubble. However, many bubble studies do not consider shell encapsulation in their studies. In this work, the dynamics of an encapsulated microbubble near a boundary was studied by numerically solving the governing equations for microbubble oscillation. In order to elucidate the effects of a boundary to the non-linear microbubble oscillation the separation distances between microbubble will be varied along with the acoustic driving. The complex nonlinear vibration response was studied in terms of bifurcation diagrams and the maximum radial expansion. It was found that the increase in distance between the boundary and the encapsulated bubble will increase the oscillation amplitude. When the value of pressure amplitude increased the single bubble is more likely to exhibit the chaotic behaviour and maximum radius also increase as the inter wall-bubble distance is gradually increased. While, with higher driving frequency the maximum radial expansion decreases and suppress the chaotic behaviour. Penerbit UMP 2020 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/29517/7/Nonlinear%20dynamics%20of%20a%20shell%20encapsulated.pdf N. M., Ali and Fatimah, Dzaharudin and E. A., Alias (2020) Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field. Journal of Mechanical Engineering and Sciences (JMES), 14 (3). pp. 7235-7243. ISSN 2289-4659 (print); 2231-8380 (online). (Published) https://doi.org/10.15282/jmes.14.3.2020.23.0568 https://doi.org/10.15282/jmes.14.3.2020.23.0568 |
| spellingShingle | T Technology (General) TJ Mechanical engineering and machinery N. M., Ali Fatimah, Dzaharudin E. A., Alias Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field |
| title | Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field |
| title_full | Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field |
| title_fullStr | Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field |
| title_full_unstemmed | Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field |
| title_short | Nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field |
| title_sort | nonlinear dynamics of a shell encapsulated microbubble near solid boundary in an ultrasonic field |
| topic | T Technology (General) TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/29517/ http://umpir.ump.edu.my/id/eprint/29517/ http://umpir.ump.edu.my/id/eprint/29517/ http://umpir.ump.edu.my/id/eprint/29517/7/Nonlinear%20dynamics%20of%20a%20shell%20encapsulated.pdf |