Sprouting Droplets Driven by Physical Effects Alone.

Sprouting Droplets Driven by Physical Effects Alone.
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仅由物理效应驱动的水滴萌芽。

DOI:
10.1021/acs.langmuir.6b04514
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发表时间:
2017
期刊:
the ACS journal of surfaces and colloids
影响因子:
--
通讯作者:
Rumble KA
Rumble KA
中科院分区:
--
文献类型:
--
作者:
Rumble KA

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Combining a partially miscible three-liquid system with interfacially trapped silica colloids, we show that small droplets can exhibit dramatic growth phenomena driven by physical effects alone. The mass dense droplets sprout tubes which grow vertically upward in a gravitational field and respond to the presence of other droplets in their path. Two of the liquids in our system are water and toluene. By varying the third liquid, we are able to relate the growth behavior to the details of the underlying three-fluid phase diagram and the changes to the interfacial tension. Additionally, we introduce a pendant drop in the path of our growing drop. We use this to confirm that growth is driven by the partitioning of solvents, that exchange of solvents between droplets is chemically selective, and that the exchange behavior can itself generate further growth phenomena.
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