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Structural Coloration in Caloenas Nicobarica Pigeons and Refractive Index Modulated Sensing
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-02-28 , DOI: 10.1002/adom.201701218 Ijaz Rashid 1 , Muhammad Umair Hassan 1 , Abbas Khandwalla 1 , Rayan Mohammed Ameen 2 , Ali Kemal Yetisen 3 , Qing Dai 4 , Haider Butt 1
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-02-28 , DOI: 10.1002/adom.201701218 Ijaz Rashid 1 , Muhammad Umair Hassan 1 , Abbas Khandwalla 1 , Rayan Mohammed Ameen 2 , Ali Kemal Yetisen 3 , Qing Dai 4 , Haider Butt 1
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The Nicobar pigeon (Caloenas Nicobarica) belongs to the extinct dodo‐bird family and has been declared as an endangered species. Here, microscopic and spectroscopic measurements are carried out on the bird's feathers to study the structural coloration originating from the barbule nanostructures. A range of color shades is recorded with changing viewing and illumination angles at different locations of the feathers. A spectacular variation in colors is generated by photonic structures; red, green, and blue and their blends are observed. Hydrophobicity of the optical material is also investigated. A contact angle of ≈156° is observed demonstrating it to be superhydrophobic. Experimental observations of the optical properties are analyzed on these feathers for sensing made possible due to the material and structural properties at the interface between barbule's surface and solution. An optical response is observed with a redshift in optical spectra with increasing refractive index of the solution, which is correlated with concentration values. The structural coloration in Nicobar pigeon can be adopted for many practical applications such as color selective filters, nonreflecting coatings, and refractive index‐based sensing.
中文翻译：
Caloenas Nicobarica鸽子的结构着色和折射率调制传感
尼科巴鸽（Caloenas Nicobarica）属于绝种的渡渡鸟科，已被宣布为濒危物种。在这里，对鸟的羽毛进行了显微镜和分光镜测量，以研究源自小球纳米结构的结构着色。在羽毛的不同位置处，随着观察角度和照明角度的变化，记录了一系列的色度。光子结构会产生颜色上的惊人变化。观察到红色，绿色和蓝色及其混合。还研究了光学材料的疏水性。观察到≈156°的接触角表明它是超疏水的。分析了这些羽毛上的光学特性的实验观察结果，以进行感测，这是由于在小球与小球之间的界面处的材料和结构特性 表面和溶液。观察到光学响应，随着溶液折射率的增加，光谱的红移与浓度值相关。尼科巴鸽的结构着色可用于许多实际应用，例如选色滤镜，非反射涂层和基于折射率的传感。
更新日期：2018-02-28
中文翻译：
Caloenas Nicobarica鸽子的结构着色和折射率调制传感
尼科巴鸽（Caloenas Nicobarica）属于绝种的渡渡鸟科，已被宣布为濒危物种。在这里，对鸟的羽毛进行了显微镜和分光镜测量，以研究源自小球纳米结构的结构着色。在羽毛的不同位置处，随着观察角度和照明角度的变化，记录了一系列的色度。光子结构会产生颜色上的惊人变化。观察到红色，绿色和蓝色及其混合。还研究了光学材料的疏水性。观察到≈156°的接触角表明它是超疏水的。分析了这些羽毛上的光学特性的实验观察结果，以进行感测，这是由于在小球与小球之间的界面处的材料和结构特性 表面和溶液。观察到光学响应，随着溶液折射率的增加，光谱的红移与浓度值相关。尼科巴鸽的结构着色可用于许多实际应用，例如选色滤镜，非反射涂层和基于折射率的传感。
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