کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1271359 | 972524 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Bubble motions confined in a microspace observed with stroboscopic technique Bubble motions confined in a microspace observed with stroboscopic technique](/preview/png/1271359.png)
Dynamic motions of gas bubble confined in a microspace, i.e., in a channel of a microreactor, were observed with a video microscope and stroboscopic technique using a light emitting diode operated in a pulsed mode. There are many important phenomena related to the bubble dynamics synchronized with ultrasonic wave and continued for more than a few minutes. With the stroboscopic technique, the time-expanded bubble motions synchronized with ultrasound wave and the real time background images can be simultaneously observed. A number of interesting phenomena resulting from the dynamic motions of a microbubble in a microspace were observed; nonspherical bubble oscillation, rectified diffusion, emergence of cavitation, and microstreaming of different patterns depending on the input power of ultrasound. The observation technique described in this investigation could be a convenient tool for taming the bubble under a microscope to investigate the bubble dynamics in detail.
Journal: Ultrasonics Sonochemistry - Volume 14, Issue 5, July 2007, Pages 621–626