Publications by authors named "Valentina Belova-Magri"
Article Synopsis
- The research focuses on how ultrasonic cavitation bubbles behave in the microholes of PMMA plates, highlighting the lack of understanding in this area despite growing interest in ultrasonic cleaning methods.
- Using high-speed imaging, the study investigates various sizes of blind and through holes, demonstrating that trapped gas in these holes can be effectively removed through ultrasound agitation.
- The findings indicate that factors like hole diameter and liquid type influence bubble dynamics, and show that ultrasound can enhance liquid movement and mixing within small structures.
Article Synopsis
- There is a gap in understanding how cavitation bubbles are distributed on solid surfaces during high frequency ultrasound reactions, which affects control over surface reactions.
- This study explores the distribution of cavitation bubbles on a solid sample using imaging techniques at different ultrasound frequencies (580, 860, and 1142 kHz).
- Findings indicate that the sample's position, orientation, and material properties significantly impact bubble distribution due to changes in the acoustic field, with optimal cavitation coverage achieved when the sample is nearly vertical to the ultrasound wave.
Micropatterning for the control of surface cavitation: visualization through high-speed imaging.
ACS Appl Mater Interfaces
February 2015
For the first time, we apply a high-speed imaging technique to record the activity of acoustically driven cavitation bubbles (86 kHz) on micropatterned surfaces with hydrophobic and hydrophilic stripes. The width of the hydrophobic stripes lies between 3.5 and 115 μm.
View Article and Find Full Text PDF