Tunable coffee-ring effect on a superhydrophobic surface
Tunable coffee-ring effect on a superhydrophobic surface
复制标题
超疏水表面的可调咖啡环效应
DOI：
10.1364/ol.42.003936
复制
发表时间：
2017-10-01
期刊：
影响因子：
3.6
通讯作者：
Cao, Yu
中科院分区：
文献类型：
--
作者：
He, An;Yang, Huan;Cao, Yu
在钛基底的设计超亲水和超疏水复合表面上获得了可调节的咖啡环效应（CRE），能够实现纳米粒子（NP）的图案化沉积。研究了具有皮秒激光诱导周期性表面结构和微纳分级结构的低粘附超疏水表面。纳米颗粒不仅沉积在0.045 mm(2)的小面积上，比原始亲水表面小265.56倍，而且除了传统的圆形外，还可以沉积成三角形、矩形和椭圆形等各种图案。 CRE 的这种可控形态表明，即使溶液浓度达到 1 mg/mL，纳米粒子在悬浮混浊液体的常见保存形式中也具有操纵能力，这对于纳米粒子印刷电路板和位点特异性递送药物来说是有希望的。 (C) 2017年美国光学学会
A tunable coffee-ring effect (CRE) that enables the patterned deposition of nanoparticles (NPs) is obtained on a designed superhydrophilic and superhydrophobic composite surface of a titanium substrate. Low-adhesion superhydrophobic surfaces with picosecond laser-induced periodic surface structure and micro-nano hierarchical structure are investigated. The NPs are not only deposited in a small area of 0.045 mm(2), which is 265.56 times smaller than that of the original hydrophilic surface, but also in various patterns such as triangular, rectangular, and ecliptical besides the traditional circular shape. This controllable morphology of the CRE indicates a maneuvering capability of NPs in their common preservation form of suspension turbid liquid, even when the solution concentration reaches 1 mg/mL, which is promising for NP-printed circuit boards and site-specific delivery drugs. (C) 2017 Optical Society of America