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Evaporation-Induced Cavitation in Nanofluidic Channels: Dynamics and Origin

  • Chuanhua Duan
Conference paper
Part of the NATO Science for Peace and Security Series C: Environmental Security book series (NAPSC)

Abstract

In this chapter, we report a new mode of heterogeneous cavitation, i.e. evaporation-induced cavitation in water-filled hydrophilic nanochannels under enormous negative pressures. The liquid menisci in nanochannels are observed to be pinned at the entrance while vapor bubbles form and expand inside during the evaporation. It is observed that the growth rate of the vapor bubbles is controlled by water evaporation at the channel entrance, which is actually significantly enhanced due to absence of vapor diffusion along the nanochannel. We also report previously unexplored bubble nucleation, growth, stability, translational symmetry and dynamics that seem to be unique at the nanoscale.

Keywords

Vapor Bubble Channel Entrance Local Expansion Cavitation Phenomenon Thermocapillary Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringBoston UniversityBostonUSA

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