Dichroic reflection in specular direction of Au-coated anisotropic hemispherical structure arrays based on monolayer of subwavelength-scale polystyrene spheres
Dichroic reflection in specular direction of Au-coated anisotropic hemispherical structure arrays based on monolayer of subwavelength-scale polystyrene spheres
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DOI：
10.1016/j.colsurfa.2013.04.008
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发表时间：
2013-07
期刊：
影响因子：
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通讯作者：
A. Emoto;Naomi Noguchi;T. Fukuda
中科院分区：
文献类型：
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作者：
A. Emoto;Naomi Noguchi;T. Fukuda
在这项工作中，我们报告了镜面方向的二向色反射现象。反射介质是由聚合物材料组成的镀金各向异性半球形结构（AuAHeS），通过基于聚苯乙烯（PS）球形颗粒阵列单层的复制工艺制造而成。通过拉伸复制过程中使用的硅橡胶模具，人为地提供结构各向异性。根据所得结构的各向异性，平行或垂直于拉伸方向偏振的入射光的吸收光谱会显着改变。根据本研究中观察到的结构的光学特性，预计将有可能产生用于光学、光子和生物光子应用的独特器件。
In this work, we report on a dichroic reflection phenomenon in the specular direction. The reflective medium is an Au-coated anisotropic hemispherical structure (AuAHeS), composed of a polymer material, which is fabricated via a replication process based on a polystyrene (PS) spherical particle array monolayer. Structural anisotropy is provided artificially by stretching the silicone rubber mold used in the replication process. Depending on the anisotropy of the resulting structure, the absorbance spectra are significantly altered for incident light that is polarized either parallel or perpendicular to the stretching direction. Based on the optical characteristics of the structures observed in the present study, the generation of unique devices for optical, photonic, and bio-photonic applications is expected to be possible.