Eur. Phys. J. Appl. Phys.
Volume 92, Number 1, October 2020
Advanced Materials for Energy Harvesting, Storage, Sensing and Environmental Engineering (ICOME 2019)
|Number of page(s)||8|
|Section||Physics and Mechanics of Fluids, Microfluidics|
|Published online||16 October 2020|
Experimental investigation of nanoparticles distribution mechanisms and deposition patterns during nanofluid droplet evaporation★
Tianjin University of Commerce, Tianjin Key Laboratory of Refrigeration Technology, Tianjin 300134, P.R. China
2 Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
* e-mail: firstname.lastname@example.org
Received in final form: 24 August 2020
Accepted: 14 September 2020
Published online: 16 October 2020
Droplet evaporation is fascinating, ubiquitous, and relevant for a wide spectrum of applications, such as printing, drug testing, coating, and biomedical diagnosis. In this paper, the effects of substrate temperature (30 °C, 47 °C, 64 °C, 81 °C) and 20 nm Al2O3 nanoparticles mass fraction (0.05%, 0.1%, 0.2%) on the nanoparticles distribution mechanisms and deposition patterns during the evaporation of Al2O3-H2O nanofluid droplet were experimentally investigated. An experimental device was designed and realized. The self-assembly and Marangoni forces were first highlighted and compared. Two coffee-ring and inner-ring patterns were then identified and analyzed. The evaporation process characteristics were finally determined and discussed.
© EDP Sciences, 2020
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