کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
203995 460689 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurements of the high pressure ultrasonic wave and the cavitation bubble by optodynamic method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Measurements of the high pressure ultrasonic wave and the cavitation bubble by optodynamic method
چکیده انگلیسی

Laser induced breakdown in water represents an abrupt high intensity photoacoustic phenomenon. The pressure front that appears at its site represents an ultrasonic shock wave spreading into surrounding water. At the same time the cavitation bubble develops. The effect of both is particularly important in ocular microsurgery, where Q-switched lasers are used to vaporize the tissue in procedures such as posterior capsulotomy. Formation of the cavitation bubble and the propagation of the sound wave were analyzed by an optodynamic experimental set-up. It is based on two-dimensional scanning technique using a beam deflection probe. From the beam deflection probe signals the time of flights for both the sound wave and the cavitation bubble were determined. By using Hugoniot curves and the two-dimensional time of flight data field the pressure amplitude in the front was estimated. Simultaneously the expansion of the cavitation bubble was also analyzed and its energy was determined.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 256, Issues 1–2, 1 August 2007, Pages 158–162
نویسندگان
, , ,