Microflow-induced shear stress on biomaterial wall by ultrasound-induced encapsulated microbubble oscillation

doi:10.1088/1674-1056/24/9/094301

中国物理B ›› 2015, Vol. 24 ›› Issue (9): 94301-094301.doi: 10.1088/1674-1056/24/9/094301

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Microflow-induced shear stress on biomaterial wall by ultrasound-induced encapsulated microbubble oscillation

胡继文^{a b}, 钱盛友^b, 孙佳娜^a, 吕云宾^a, 胡苹^a

a School of Mathematics and Physics, University of South China, Hengyang 421001, China;
b School of Physics and Information Science, Hunan Normal University, Changsha 410081, China

收稿日期:2015-01-13 修回日期:2015-04-06 出版日期:2015-09-05 发布日期:2015-09-05
基金资助:
Projects supported by the National Natural Science Foundation of China (Grant Nos. 11174077 and 11474090), the Natural Science Foundation of Hunan Province, China (Grant No. 13JJ3076), the Science Research Program of Education Department of Hunan Province, China (Grant No. 14A127), and the Doctoral Fund of University of South China (Grant No. 2011XQD46).

Microflow-induced shear stress on biomaterial wall by ultrasound-induced encapsulated microbubble oscillation

Hu Ji-Wen (胡继文)^{a b}, Qian Sheng-You (钱盛友)^b, Sun Jia-Na (孙佳娜)^a, Lü Yun-Bin (吕云宾)^a, Hu Ping (胡苹)^a

a School of Mathematics and Physics, University of South China, Hengyang 421001, China;
b School of Physics and Information Science, Hunan Normal University, Changsha 410081, China

Received:2015-01-13 Revised:2015-04-06 Online:2015-09-05 Published:2015-09-05
Contact: Qian Sheng-You E-mail:syqian@foxmail.com
Supported by:
Projects supported by the National Natural Science Foundation of China (Grant Nos. 11174077 and 11474090), the Natural Science Foundation of Hunan Province, China (Grant No. 13JJ3076), the Science Research Program of Education Department of Hunan Province, China (Grant No. 14A127), and the Doctoral Fund of University of South China (Grant No. 2011XQD46).

摘要/Abstract

摘要： A model of an ultrasound-driven encapsulated microbubble (EMB) oscillation near biomaterial wall is presented and used for describing the microflow-induced shear stress on the wall by means of a numerical method. The characteristic of the model lies in the explicit treatment of different types of wall for the EMB responses. The simulation results show that the radius-time change trends obtained by our model are consistent with the existing models and experimental results. In addition, the effect of the elastic wall on the acoustic EMB response is stronger than that of the rigid wall, and the shear stress on the elastic wall is larger than that of the rigid wall. The closer the EMB to the wall, the greater the shear stress on the wall. The substantial shear stress on the wall surface occurs inside a circular zone with a radius about two-thirds of the bubble radius. This paper may be of interest in the study of potential damage mechanisms to the microvessel for drug and gene delivery due to sonoporation.

关键词: encapsulated microbubble, shear stress, sonoporation

Abstract: A model of an ultrasound-driven encapsulated microbubble (EMB) oscillation near biomaterial wall is presented and used for describing the microflow-induced shear stress on the wall by means of a numerical method. The characteristic of the model lies in the explicit treatment of different types of wall for the EMB responses. The simulation results show that the radius-time change trends obtained by our model are consistent with the existing models and experimental results. In addition, the effect of the elastic wall on the acoustic EMB response is stronger than that of the rigid wall, and the shear stress on the elastic wall is larger than that of the rigid wall. The closer the EMB to the wall, the greater the shear stress on the wall. The substantial shear stress on the wall surface occurs inside a circular zone with a radius about two-thirds of the bubble radius. This paper may be of interest in the study of potential damage mechanisms to the microvessel for drug and gene delivery due to sonoporation.

Key words: encapsulated microbubble, shear stress, sonoporation

中图分类号: (Nonlinear acoustics)

43.25.+y

43.80.+p (Bioacoustics)

胡继文, 钱盛友, 孙佳娜, 吕云宾, 胡苹. Microflow-induced shear stress on biomaterial wall by ultrasound-induced encapsulated microbubble oscillation[J]. 中国物理B, 2015, 24(9): 94301-094301.

Hu Ji-Wen (胡继文), Qian Sheng-You (钱盛友), Sun Jia-Na (孙佳娜), Lü Yun-Bin (吕云宾), Hu Ping (胡苹). Microflow-induced shear stress on biomaterial wall by ultrasound-induced encapsulated microbubble oscillation[J]. Chin. Phys. B, 2015, 24(9): 94301-094301.

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Microflow-induced shear stress on biomaterial wall by ultrasound-induced encapsulated microbubble oscillation

Microflow-induced shear stress on biomaterial wall by ultrasound-induced encapsulated microbubble oscillation

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