Journal
LANGMUIR
Volume 31, Issue 16, Pages 4696-4703Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.5b00653
Keywords
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Funding
- Netherlands Organisation for Scientific Research (NWO) [11431]
- Australian Research Council [FT120100473, DP140100805]
- NWO zwaartekracht MCEC program
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The analogy between evaporating surface droplets in air to dissolving long-chain alcohol droplets in water is worked out. We show that next to the three known modi for surface droplet evaporation or dissolution (constant contact angle mode, constant contact radius mode, and stick-slide mode), a fourth mode exists for small droplets on supposedly smooth Substrates, the stick-jump :mode: intermittent contact line pinning causes the droplet to switch between sticking and jumping,during the dissolution. We present experimental data and,compare them to theory to predict the dissolution time in this stick-jump Mode. We also explain why these jumps were easily observed for microscale droplets but not for larger droplets.
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