Formation, growth and applications of femtoliter droplets on a microlens
Lei Lei, Jia Li, Haitao Yu, Lei Bao, Shuhua Peng, Xuehua Zhang
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | ROYAL SOC CHEMISTRY | Published : 2018
Formation and growth of femtoliter droplets on surface microstructures are important in many fundamental and practical interfacial processes, such as water collection, vapour condensation in cooling devices, drop self-removal on anti-icing surfaces and fabrication of droplet-templated functional microstructures. In this work, we experimentally and theoretically investigate the growth of femtoliter oil-like liquid on the microlens surrounded by a hydrophilic planar area. The droplets were produced by solvent exchange, a process where the droplets nucleate and grow from an oversaturation created by displacing a good solvent by a poor solvent of the droplet liquid. Our results showed that the d..View full abstract
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Awarded by Australian Research Council
We are grateful to Miaosi Li for the assistance with infrared measurements. L. L. and J. L. acknowledge the support from the Chinese Scholarship Council. X. H. Z. acknowledges the support from the Australian Research Council (FT120100473 and LP140100594), S. P. acknowledges the support from the ARENA Research Fellowship, L. B. acknowledges the support from the RMIT Vice Chancellor Postdoctoral Fellowship and H. T. Y. acknowledges the support from the RMIT Vice Chancellor Scholarship. We also acknowledge the access to facilities and the associated technical support at the RMIT MicroNano Research Facility (MNRF) and the Microscopy and Microanalysis Facility (RMMF).