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Selective self-assembly of three-component system based on hydrophilic/hydrophobic patterning
Sensors and Actuators A: Physical ( IF 4.6 ) Pub Date : 2020-06-07 , DOI: 10.1016/j.sna.2020.112143
Taiki Okuyama , Tatsuya Hikida , Taiji Okano , Hiroaki Suzuki

This paper presents a demonstration of the selective bonding of three different millimeter-scale components by using complementary patterning of hydrophilic and hydrophobic surfaces. The hydrophobic surface of millimeter-scale components fabricated from hydrophobic polydimethylsiloxane (PDMS) was made partially hydrophilic with a designed pattern by exposure to an excimer light through a stencil mask. The oil, as an adhesive, was only deposited on the hydrophobic surface. We prepared 30 components with 3 patterns, which were agitated in water by using a computer-controlled propeller stirrer. As a result, we obtained a significantly higher yield of correct bonds compared to erroneous bonds under an appropriate stirring condition. The result can be explained through the contrast in bonding strength between the correct and erroneous bonds. The design principle of using concentric patterns serves as a basic strategy for realizing programmed self-assembly with selective bonding patterns.



中文翻译:

基于亲水/疏水构图的三组分系统选择性自组装

本文介绍了通过使用亲水性和疏水性表面的互补构图选择性粘合三种不同毫米级成分的方法。由疏水性聚二甲基硅氧烷(PDMS)制成的毫米级组件的疏水性表面通过模版掩模暴露在准分子光下,具有设计图案的部分亲水性。作为粘合剂的油仅沉积在疏水表面上。我们准备了30种具有3种样式的组件,并使用计算机控制的螺旋桨式搅拌器在水中搅拌。结果,与在适当的搅拌条件下的错误键相比,我们获得了正确键的明显更高的产率。可以通过正确键和错误键之间的键强度对比来解释结果。

更新日期:2020-06-07
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