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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | He, Xuefeng Chen, Rong Zhu, Xun Liao, Qiang |
| Copyright Year | 2016 |
| Abstract | In this paper, the IR laser photothermally induced phase change characteristics in the microchannels with different wettabilities were studied using visual experiments. The hydrophobic microchannel was obtained by the hydrophobic nature of the PDMS material while the hydrophilic microchannels were obtained by the inert gas plasma surface treatments. Effects of the contact angle, laser power and spot position were investigated. It is interesting to find the change of the wettability and laser power could alter the phase change behaviors. The hydrophobic microchannel showed the interface advancement at low laser power and the liquid slug formation accompanying with the interface receding at high laser power. For less hydrophilic microchannel, the liquid slug formation accompanying with the interface receding was observed at low laser power while the sole interface receding was observed at high laser power. For more hydrophilic microchannel, the sole interface receding was observed for both low and high laser powers. Besides, it was also found that increasing the distance between the initial interface location and laser spot led to the increased thermal resistance, lowering the evaporation rate and thereby the above-mentioned effect. |
| Sponsorship | Heat Transfer Division |
| File Format | |
| ISBN | 9780791850329 |
| DOI | 10.1115/HT2016-1007 |
| Volume Number | Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamentals in Heat Transfer; Nanoscale Thermal Transport; Heat Transfer in Equipment; Heat Transfer in Fire and Combustion; Transport Processes in Fuel Cells and Heat Pipes; Boiling and Condensation in Macro, Micro and Nanosystems |
| Conference Proceedings | ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels |
| Language | English |
| Publisher Date | 2016-07-10 |
| Publisher Place | Washington, DC, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Thermal resistance Lasers Slug flows Plasma desorption mass spectrometry Evaporation Plasmas (ionized gases) Surface finishing Microchannels |
| Content Type | Text |
| Resource Type | Article |
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