Abstract
Confocal fringe patterns of evaporating sessile drops have provided initial evidence of the presence of a sub-micron thin liquid film emanating from an evaporating sessile droplet. The droplets studied were seeded with 50 nm aluminum oxide particles. Natural evaporation occurs on the substrates that are varied in wettability with static apparent contact angles as θ = 20º, 33º, 85º and 105º for a DI-water. Subsequent SEM, EDX and AFM characterization demonstrates the existence of aluminum oxide nanoparticle deposition in the submicron region. The profile of stuck nanoparticles shows nanometer-scaled height that is comparative in thickness to a transition film. Moreover, the radial extent of the deposition is consistent around the periphery of the original droplet and is found to be dependent upon the surface wettability. This study shows experimentally that the relative length of nanoparticle deposition increases with the surface wettability.
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References
D. H. Shin, S. H. Lee, J. Y. Jung and J. Y. Yoo, Evaporating characteristics of sessile droplet on hydrophobic and hydrophilic surfaces, Microelectron Eng., 86 (2009) 1350–1353.
J. H. Kim, S. I. Ahn, J. H. Kim and W. C. Zin, Evaporation of water droplets on polymer surfaces, Langmuir, 23 (2007) 6163–6169.
D. H. Shin, C. K. Choi, Y. T. Kang and S. H. Lee, Local aggregation characteristics of nanofluid droplet during evaporation, Int. J. Heat Mass Transfer, 72 (2014) 336–344.
S. C. Maroo and J. N. Chung, Heat transfer characteristics and pressure variation in a nanoscale evaporating meniscus, Int. J. Heat Mass Transfer, 53 (2010) 3335–3345.
J. N. Chung, T. Chen and S. C. Maroo, A review of recent progress on nano/micro scale nucleate boiling fundamentals, Front. Heat Mass Transfer, 2 (2011) 023004.
P. Yi, D. Poulikakos, J. Walther and G. Yadigaroglu, Molecular dynamics simulation of vaporization of an ultra–thin liquid argon layer on a surface, Int. J. Heat Mass Transfer, 45 (2002) 2087–2100.
A. Chatterjee, J. L. Plawsky and P. C. Wayner, Disjoining pressure and capillarity in the constrained vapor bubble heat transfer system, Adv. Colloid Interface Sci., 168 (2011) 40–49.
J. L. Plawsky, M. Ojha, A. Chatterjee and P. C. Wayner, Review of the effects of surface topography, surface chemistry, and fluid physics on evaporation at the contact line, Chem. Eng. Commun., 196 (2008) 658–696.
S. S. Panchamgam, J. L. Plawsky and P. C. Wayner, Spreading characteristics and microscale evaporative heat transfer in an ultrathin film containing a binary mixture, J. Heat Transfer, 128 (2006) 1266–1275.
S. C. Maroo and J. N. Chung, Nanoscale liquid–vapor phase–change physics in nonevaporating region at the threephase contact line, J. Appl. Phys., 106 (2009) 064911.
S. C. Maroo and J. N. Chung, Molecular dynamic simulation of platinum heater and associated nanoscale liquid argon film evaporation and colloidal adsorption characteristics, J. Colloid Interface Sci., 328 (2008) 134–146.
V. P. Carey, Liquid–vapor Phase–change Phenomena, 2nd edition, Taylor and Francis, New York, USA (2008).
D. H. Shin, J. S. Allen, C. K. Choi and S. H. Lee, Visualization of an evaporating thin layer during the evaporation of a nanofluid droplet, Langmuir, 31 (2015) 1237–1241.
A. H. Liu, P. C. Wayner and J. L. Plawsky, Image scanning ellipsometry for measuring nonuniform film thickness profiles, Appl. Opt., 33 (1994) 1223–1229.
R. Barer, Refractometry and interferometry of living cells, J. Opt. Soc. Am., 47 (1957) 545–556.
L. V. Govor, G. Reiter, J. Parisi and G. H. Bauer, Selfassembled nanoparticle deposits formed at the contact line of evaporating micrometer–size droplets, Phy. Rev. E., 69 (2004) 061609.
J. Parisi, L. V. Govor, G. H. Bauer and G. Reiter, Selfassembly of nanoparticle ring patterns, Z. Naturforsch., 61a (2006) 99–102.
Y. O. Popov, Evaporative deposition patterns: Spatial dimensions of the deposit, Phys. Rev. E., 71 (2005) 036313.
H. Hu and R. G. Larson, Evaporation of a sessile droplet on a substrate, J. Phys. Chem. B., 106 (2002) 1334–1344.
J. M. Stauber, S. K. Wilson and B. R. Duffy, Evaporation of droplets on strongly hydrophobic substrates, Langmuir, 31 (2015) 3653–3660.
Wikipedia, Piranha Solution, https://en.wikipedia.org/wiki/Piranha_solution, Accessed: 17th, April (2016).
E. Yu, S.–C. Kim, H. J. Lee, K. H. Oh and M.–W. Moon, Extreme wettability of nanostructured glass fabricated by non–lithographic, anisotropic etching, Sci. Rep., 5 (2015) 9362.
L. Zheng, Y.–X. Wang, J. L. Plawsky and P. C. Wayner, Accuracy of measurements of curvature and apparent contact angle in a constrained vapor bubble heat exchanger, Int. J. Heat Mass Transfer, 45 (2002) 2021–2030.
Bruker. Corporation, Dimension Icon Brochure, https://www.bruker.com/fileadmin/user_upload/8–PDF–Docs/Surface Analysis/AFM/Brochures/B068–RevB2–Dimension_Icon–Brochure. pdf, Accessed: 17th, April (2016).
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Dong Hwan Shin received his B.S., M.S., and Ph.D. degrees from the Department of Mechanical Engineering in Chung-Ang University, Seoul, Korea. He is currently a Senior Researcher at Advanced Cooling Laboratory at Korea Institute of Machinery & Materials (KIMM), Daejeon, Korea. His research interests are thermal engineering and fluid mechanics including interfacial phenomena during phase change and surface treatment for surface energy control. Currently, he focuses mainly on advanced cooling technique for heat pipe and TGP using evaporation and boiling and gas turbine blade cooling.
Dae Yun Kim received his B.S. and M.S. degrees from Chung-Ang University. He is currently Ph.D. candidate in School of Mechanical Engineering at the Chung-Ang University. His research interest is heat and mass transfer, multiphase flow, computational fluid dynamics.
Chang Kyoung Choi is a faculty member of Mechanical Engineering- Engineering Mechanics at Michigan Technological University. He has a strong passion for teaching and has research experience in multiple areas of heat transfer, phase changes, and biomedical applications. He received his B.S. and M.S. in Mechanical Engineering from Chung-Ang University in 1999 and 2001, respectively. He received a Ph.D. in Mechanical Engineering from the University of Tennessee- Knoxville in 2007.
Seong Hyuk Lee received his B.S., M.S. and Ph.D. degrees in Mechanical Engineering Department from Chung-Ang University in Korea. Now, he is a Professor of Mechanical Engineering Department at Chung-Ang University. He has various research fields in heat and mass transfer: Interfacial phenomena, evaporation/condensation heat transfer, SPR visualization, and computational physics.
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Shin, D.H., Kim, D.Y., Choi, C.K. et al. Quantitative measurements of nanoparticle layer thicknesses near the contact line region after droplet drying-out. J Mech Sci Technol 33, 967–971 (2019). https://doi.org/10.1007/s12206-019-0153-0
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DOI: https://doi.org/10.1007/s12206-019-0153-0