Study of natural photonic crystals in beetle scales and their conversion into inorganic structures via a sol-gel bio-templating route
Study of natural photonic crystals in beetle scales and their conversion into inorganic structures via a sol-gel bio-templating route
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DOI：
10.1039/b913217a
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发表时间：
2010-01-01
影响因子：
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通讯作者：
Bartl, Michael H.
中科院分区：
文献类型：
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作者：
Galusha, Jeremy W.;Richey, Lauren R.;Bartl, Michael H.
采用结构表征和光学表征技术对象鼻甲科和天牛科几个不同的象鼻甲和天牛科结构色的来源进行了研究。在可见光波段发现了一系列有趣的三维光子晶体结构，包括无序和有序的非紧密排列的角状球体晶格和双连续的基于金刚石的结构。发现的光子结构显示出晶格常数和介电填充分数的巨大变化，从而产生跨越整个可见范围的光学反射颜色。为了将这些生物聚合物光子晶体转化为热稳定和光稳定的无机结构，开发了一种低温生物模板方法。利用有机-无机杂化二氧化硅溶胶-凝胶渗透-模板化学结合酸蚀模板去除技术，制备了稳定的逆光子结构。逆结构具有良好的结构质量和鲜明的反射特性。
The origin of the structural colors from several different examples of the weevil and longhorn families (Curculionidae and Cerambycidae, respectively) was investigated by structural and optical characterization techniques. A range of interesting three-dimensional photonic crystal structures operating at visible wavelengths was discovered, including both disordered and ordered non-close-packed lattices of cuticular spheres and bicontinuous diamond-based architectures. The discovered photonic structures display a large variation in lattice constants and dielectric filling fractions and thereby create optical reflectance colors spanning the entire visible range. To transform these bio-polymeric photonic crystals into heat and photo-stable inorganic structures, a low-temperature bio-templating method was developed. Using organic-inorganic hybrid silica sol-gel infiltration-templation chemistry combined with acid-etching template removal, stable inverse photonic structures were fabricated. The inverse structures display good structural quality and vivid reflection properties.