模板法制备多功能界面材料及其性能研究

发布时间：2018-02-20 01:44

本文关键词： 蝴蝶复眼光子晶体抗润湿抗反射多功能复制纳米球平版印刷　出处：《浙江大学》2010年硕士论文　论文类型：学位论文

【摘要】： 自然界中存在许多奇妙的现象,这些现象的存在常常与生物自身所具有的特殊结构具有密切的联系。本文首先简要地介绍了自然界中存在的一些新奇的特性以及这些特性与自身结构之间的相关性。随后本文着重对蝴蝶的复眼结构以及由该特殊结构所产生的兼具光子晶体、抗润湿和抗反射特性的多功能界面材料进行了研究。受自然界中生物的启发,我们采用纳米球自组装的方法制备了具有类复眼结构的二维聚苯乙烯球(PS)阵列,以该阵列作为模板随后通过MOCVD等方法成功地实现了对复眼结构以及纳米球阵列的精确复制,从而制备了具有复眼结构的人工界面材料并对生物模板本身和人工材料之间的相关特性进行了系统的对比和分析,具体实验结果如下: 1.蝴蝶具有典型的微纳组合复眼结构。微米级的小眼以六方密排(hcp)的形式规则排列在角膜表面,小眼的表面并不是光滑的而又是由许多纳米级的突起结构按照非密排(ncp)的形式组合而成,从而形成了一种特殊的微纳组合多层结构。 2.蝴蝶复眼所具有的微纳组合结构具有明显的光子晶体、抗润湿和抗反射特性。 3.采用低温MOCVD和电子束蒸发技术不仅可以实现对蝴蝶复眼结构的精确复制而且由该特殊结构所产生的多种特性都可以在复制材料中得到很好的继承。 4.通过对表面具有蝴蝶复眼结构的材料与同厚度的表面光滑的材料进行比较发现材料的特殊的表面结构与上述性能之间具有密切联系。表面的突起结构越尖锐形成的表面粗糙度越大从而其抗润湿及抗反射效果就会越明显。 5.具有复眼结构的ZnO和Pt界面均可以实现稳定可逆的光响应特性。通常情况下,具有复眼结构的界面材料呈现明显的疏水特性,然而在紫外光的照射后其表面会发生由疏水性向亲水性的转变,随后将样品置于暗室中,一周之后样品又会恢复到原来的疏水状态。 6.采用纳米球平版印刷技术制备了一系列由不同尺寸的PS球形成的类复眼阵列并以该阵列作为模板对其进行复制,复制后得到了具有规则排列的界面材料,这种具有类复眼结构的人工界面材料也具有明显的光子晶体,抗反射以及抗润湿特性。 7.对比分析了PS纳米球的尺寸对其抗润湿特性的影响。测试结果表明当PS球直径为200nm时具有最佳的抗润湿特性并且与其它尺寸相比该阵列还具有较好的抗反射特性,此结果与自然界中的蝴蝶经过多年进化后得到的表面突起结构尺寸相一致。
[Abstract]:There are many wonderful natural phenomenon, these phenomena are often closely linked with the special biological structure has its own. This paper first briefly introduces the correlation between some novel properties that exist in nature, these characteristics and its structure. Then this article on the butterfly and eye structure produced by the special the structure of both photonic crystal, multifunctional interface material anti wetting and anti reflection properties were studied. Inspired by the nature of biological, two-dimensional polystyrene spheres with ommateum structure preparation methods we use nanosphere self-assembled system (PS) array, the array as template and then to successfully implement the eye the structure and the accurate reproduction of nanosphere array by MOCVD method, so as to prepare the artificial interface material with compound eye structure and on the biological template The relative characteristics of the artificial materials are compared and analyzed systematically, and the experimental results are as follows:
The butterfly has 1. micro nano composite compound eye structure. Typical micron slim dense row by six party (HCP) in the form of regular arrangement on the surface of the cornea, the eye surface is not smooth and is composed of many nano structure processes according to the non close packed (NCP) in the form of combination, formed from micro nano composite multilayer structure is a kind of special.
The micro and nano composite structure of 2. butterfly compound eyes has obvious photonic crystal, anti wetting and anti reflection properties.
3., low temperature MOCVD and electron beam evaporation technology can not only accurately reproduce the structure of butterfly's compound eyes, but also produce various characteristics produced by this special structure, which can be well inherited in the copied materials.
The 4. surface has a butterfly compound eye structure material and the same thickness on the surface of smooth material compared with the close relation between the performance and the special surface structure of material surface structure. The surface roughness of the formation of increasingly larger and its anti wetting and anti reflection effect will be more obvious.
The response characteristics of 5. ZnO with compound eye structure and Pt interface can achieve stable reversible light. Normally, with the interface material has obvious characteristics of hydrophobic compound eye structure, however, the irradiation of the ultraviolet light after its surface tends to change from hydrophilic to hydrophobic, then the sample is placed in a dark room, a week after the sample will return to the original hydrophobic state.
6. using nanosphere lithography to prepare a series of different sizes formed by PS ball type compound array and the array as template for replication, replication was obtained with interface materials with regular arrangement, this kind of artificial material interface with compound eye structure photonic crystal also has obvious anti reflection, and anti wetting characteristics.
7. comparative analysis of the effect of PS nanoparticles on the dimension of anti wetting properties. Test results show that when the PS ball diameter is 200nm has the best anti wetting properties and other dimensions of the array is compared with anti reflection characteristic better, the results and the nature of the surface structure and size of the butterfly after many years of evolution after the agreement.

【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TB34

【引证文献】