0
Thermocavitation in a Microchannel with a Low Power Light Source

Excerpt

We have studied the formation of vapour bubbles in a microchannel, a confined quasi-two dimensional system where one dimension is much smaller than the other two. The bubble is created by thermocavitation, i.e. by overheating a small region of the fluid, using a continuous wave laser diode. To the best of our knowledge, this is the first time that thermocavitation is achieved with such low power light sources (∼ 100mW). Our fast-imaging experimental results are compared with theoretical models and show good agreement with the predicted bubble growth. Considering the bubble as a piston able to transfer kinetic energy to the fluid, we show that this microfluidic system is a low-cost micro-engine able to convert thermal energy into work.

Introduction
Experimental Setup Description & Results
Conclusions & Outlook
Acknowledgements
References
Full text of this content:

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In