Liquid Body Formation from a Semispherical Superhydrophobic Well on a Small Incline

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• 作者：Mayur Katariya ; Thach Vuong ; Tuck Wah Ng
• 刊名：Langmuir
• 出版年：2014
• 出版时间：November 25, 2014
• 年：2014
• 卷：30
• 期：46
• 页码：13731-13736
• 全文大小：369K
• ISSN：1520-5827

文摘

In this work, drop formation on a slightly inclined superhydrophobic substrate with liquid at various flow rates delivered through a semispherical well was investigated. Due to the initial dry well condition in the first drop produced, the inertial force from liquid filling allowed the well鈥檚 edge hysteresis to be more readily breached, in which flow rates of 16 mL/min and above could create a jet that appeared to be able to 鈥減ierce鈥?through the top of the semispherical drop without disrupting its form and growth very much. For subsequent drops, the well鈥檚 edge hysteresis at flow rates of 14 mL/min and above helped to support an 鈥渆gg鈥?like form. In contrast, this form could not be developed on a similarly inclined superhydrophobic substrate without a well. The findings here assist to establish the flow rate ranges for consistent discrete volume delivery in biochemical analysis and serves as a means to conduct investigations to better reconcile the tendency of liquids to assume drops or develop jets.