کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4923879 1430823 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of boundary proximity on monodispersed microbubbles in ultrasonic fields
ترجمه فارسی عنوان
اثر مجاورت مرزی بر میکرو حبابهای مونو دی اسپرز در زمینه های اولتراسونیک
کلمات کلیدی
دوختن، میکروبابابل، نوسان سونوگرافی، کلر-میکسس، ضد انحطاط، متناوب، آشوب، سیستم های دینامیک،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Microbubbles have demonstrated the potential to redraw the boundaries of biomedical applications and revolutionize diagnostic and therapeutic applications. However, the ability to distinguish the acoustic response from a cluster of microbubbles in close proximity to the vessel endothelial cell from those that are not is a challenge that needs to be addressed. To address this, the present paper modifies the Keller-Miksis model to include the effects of a boundary. The acoustic responses are analysed via techniques from dynamical systems theory such as Poincaré plots and bifurcation diagrams. It is found that the presence of a boundary causes an intermittent route to chaos while microbubbles far from the boundary result in a period-doubling route to chaos as the single control parameter pressure amplitude is varied. The route to chaos is altered via antimonotinicity with increasing bubble-wall distance. It has also been found that the effects of coupling are significant as it alters the chaotic threshold to occur at lower driving pressure amplitudes. The results also suggest that the increase in coupling effects between microbubbles near a boundary lowers the pressure amplitude required for chaos and lowers the natural frequency of the cluster.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 410, 8 December 2017, Pages 330-343
نویسندگان
, , ,