启迪于蝶翅分级精细结构的遗态功能材料-中国材料进展

文章信息/Info

Author(s):: ZHANG Wang; GU Jiajun; SU Huilan; ZHANG Di; State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University

摘要:: 传统设计与制备技术手段往往难以实现预期精细结构与功能构筑，从而限制了材料结构-性能之间新现象的发现与新机理的建立。借用经亿万年自然优化的生物自身多层次、多维和多尺度的本征结构为模板，通过物理和化学手段，在保留生物精细分级结构的同时，置换生物模板的化学组分为所需功能组分，利用生物精细结构与人工组分之间的耦合关系，可制备既遗传自然生物精细形态，又有人为赋予特性的新材料——遗态材料。围绕具有蝶翅精细结构的遗态光功能材料，分别以金属-半导体功能蝶翅的红外吸收增强及光热转换、金属功能蝶翅的表面等离子体拉曼增强为例，介绍了遗态材料的设计思路、制备方法、性能表征及相关机理探索过程。相关思路与方法为解决分级精细结构难以制备的难题提供了新途径，并为新材料构型设计提供了前瞻性思路和原理验证。

Abstract:: Traditional design and manufacture method is less likely to duplicate the expected elaborate structures and functions, which seriously hinders the discovery of new phenomenon and the establishment of new mechanism between structures and functions. The chemical constituents within the organism can be replaced with the desired functional constituents by using the multi-level, multi-dimensional and multi-scale intrinsic bio-structure as template, through physical and chemical process. This innovative material, which endows the desired function while maintains the original bio-structure at the same time, is named morpho-genetic material. This manuscript presents the design, manufacture, characterization and mechanism of optical function morpho-genetic material, illustrates by two typical examples：metal-semiconductor functional wings enhanced infrared absorption and photothermal conversion, metal wing surface enhanced Raman scattering. The research thought and synthesis method mentioned here offer a new solution for the synthesis of multi-level fine structure. Furthermore, it provides a foresight and theoretical support for proposal of the novel material.