蝶翅为模板制备三维分级微纳光学材料

发布时间：2018-03-24 02:28

本文选题：蝶翅　切入点：分级　出处：《中国材料进展》2017年Z1期

【摘要】：蝴蝶经过自然进化形成由脊(ridge)、肋(rib)、短肋(strut)等微结构构成的多层次、多维度的微纳分级结构,作用于入射光线,使其呈现出独特的光学特性。以蝶翅为模板,制备无机或有机三维材料,不仅可获得结构色、抗反射、热响应、选择性气体响应、定向粘连、超疏水等多种功能特性,并且可通过采用结构不同的蝶翅,改变复合物的厚度等因素进行调控;同时克服了人为仿生过程中设备复杂、构型简单、成本高的问题,为制备结构功能一体化材料提供了新的思路。从金属、金属氧化物、聚合物三个方面重点阐述蝶翅所赋予材料的特殊光学效应。金属蝶翅上的"肋(rib)"结构具有显著的表面局域增强效应,如Au蝶翅的灵敏度比商用表面增强拉曼光谱(SERS)基板Klarite的高10倍但成本仅为其1/10;蝶翅表面的微细鳞片具有"捕光"效应,如蜂窝状结构的黑色鳞片对可见光的平均吸收率达到96%以上,可应用在光阳极、光催化等方面;蝶翅赋予响应性光子晶体特殊的光学特性,其会随着周围环境,如p H、电场、温度等发生变化,为制备更加简单、灵敏度高的传感器提供了途径。
[Abstract]:Through natural evolution, butterflies form a multi-level, multi-dimensional, micro-nano hierarchical structure composed of such microstructures as ridgeweed, ribrib, and short rib strut.It acts on the incident light and makes it exhibit unique optical properties. The butterfly wings are used as templates. The preparation of inorganic or organic three-dimensional materials can not only obtain structural color, anti-reflection, thermal response, selective gas response, directional adhesion, superhydrophobic and other functional characteristics, but also adopt different structure of butterfly wings. At the same time, it overcomes the problems of complex equipment, simple configuration and high cost in the artificial bionic process, and provides a new way of thinking for the preparation of structure-functional integrative materials, such as metal, metal oxide, metal oxide, metal oxide, metal oxide, metal oxide, metal oxide, metal oxide, metal oxide, metal oxide and so on. In three aspects of polymer, the special optical effect of the material on the butterfly fin is emphasized. The "rib ribose" structure on the metal butterfly wing has a significant local enhancement effect on the surface. For example, the sensitivity of au butterfly fin is 10 times higher than that of commercial surface-enhanced Raman spectroscopy (SERS) substrate Klarite, but the cost is only 1 / 10. For example, the average absorption of visible light by black scales with honeycomb structure is over 96%, which can be used in photoanode, photocatalysis and so on. The change of temperature provides a way for the fabrication of more simple and sensitive sensors.
【作者单位】：上海交通大学金属基复合材料国家重点实验室;
【基金】：国家自然科学基金资助项目(51271116)
【分类号】：TB34;TN15;TP212

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