利用胶体探针技术研究多巴与纳米、微米及微纳复合结构表面之间的相互作用

发布时间：2018-10-25 16:38

【摘要】：通过在硅片表面有机蒸镀不同厚度的二十九烷制备了不同晶体密度的仿生旱金莲叶面蜡质纳米结构表面,采用端基修饰多巴的原子力显微镜胶体探针,对各纳米结构表面进行了粘附性能测试,发现蒸镀200 nm厚度二十九烷结晶的纳米结构表面具有较低粘附力。采用反应离子刻蚀方法制备了不同高度的硅材质仿生鲨鱼皮微米结构表面,并选择了200 nm厚度二十九烷在仿生鲨鱼皮表面进行有机蒸镀制备了微纳复合结构表面,通过胶体探针的研究发现多巴与高度为1、3、5μm微纳复合结构表面的粘附力均小于与200 nm厚度二十九烷结晶的纳米结构表面之间的粘附力,说明微纳复合结构表面具有很强的抗多巴粘附能力,并且这种复合结构表面相对于硅材质的仿生鲨鱼皮微米结构表面还兼有旱金莲叶面的强疏水性和极佳的抗水粘附能力。
[Abstract]:Through organic evaporation of 29 alkanes on the surface of silicon wafer, the waxy nanostructures with different crystal densities were prepared, and the atomic force microscope (AFM) colloidal probe modified with terminal group was used. The adhesion properties of the nanostructures were tested. It was found that the surface of the nanostructures crystallized by 29 alkanes with a thickness of 200 nm was of low adhesion. The micron structure surface of bionic shark skin with different silicon material was prepared by reactive ion etching method, and the micro-nano composite structure surface was prepared by organic evaporation of 29 alkane with the thickness of 200 nm on the surface of bionic shark skin. It was found by colloidal probe that the adhesion of dopa to the surface of the nanostructure with a height of 1 ~ 3 渭 m was lower than that of the surface of the nanostructure crystallized by 29 alkane with a thickness of 200 nm. The results show that the surface of micro-nano composite structure has strong ability to resist dopa adhesion, and the surface of this composite structure has strong hydrophobicity and excellent water resistance in comparison with the micron structure surface of bionic shark skin made of silicon.
【作者单位】：黑龙江大学化学化工与材料学院;中国科学院化学研究所胶体界面与化学热力学院重点实验室;
【基金】：国家自然科学基金(21603240)资助项目~~
【分类号】：O647.4

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