Butterfly wing color: A photonic crystal demonstration |
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| Institution: | 1. Department of Electrical and Electronics & Communication Engineering, DIT University, Dehradun, 248009, Uttarakhand, India;2. Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, 252059, Shandong, China;1. Department of Electronics & Communication Engineering, Punjabi University, Patiala, Punjab, India;2. Department of Electronics & Communication Engineering, Sant Longowal Institute of Engineering and Technology, Longowal, Sangrur, Punjab, India;1. Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China;2. Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China;1. Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. School of Physics and Electronic Engineering, Changshu Institute of Technology, Changshu 215500, China;1. Dept. of Electrical Engineering, Shibaura Institute of Technology (SIT), Tokyo, Japan;2. Institutes for Quantum and Radiological Science and Technology (QST), Gunma, Japan;3. Graduate School of Science and Technology, Gunma University, Gunma, Japan;1. Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy;2. Università degli Studi di Genova, 16145 Genova, Italy |
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| Abstract: | We have theoretically modeled the optical behavior of a natural occurring photonic crystal, as defined by the geometrical characteristics of the Teinopalpus Imperialis butterfly. In particular, following a genetic algorithm approach, we demonstrate how its wings follow a triclinic crystal geometry with a tetrahedron unit base. By performing both photonic band analysis and transmission/reflection simulations, we are able to explain the characteristic colors emerging by the butterfly wings, thus confirming their crystal form. |
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| Keywords: | Photonic crystals Photonic crystal in biology Triclinic Bravais lattice Plane wave expansion (PWE) method Rigorous coupled wave analysis (RCWA) |
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