Dynamic Color Regulation of the Lycaenid Butterfly Wing Scales  

作　　者：Mingxia Sun Weihao Meng Haiwei Yin Lingjie Fan Lei Shi Gregory S.Watson Jolanta A.Watson Jingxia Wang Lei Jiang Aiping Liang 

机构地区：[1]Tianjin Key Laboratory of Conservation and Utilization of Animal Diversity,College of Life Sciences,Tianjin Normal University,Tianjin,300387,China [2]Laboratory of Bioinspired-Smart Interface Sciences,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing,100190,China [3]Shanghai Ideaoptics Corporation,Shanghai,200433,China [4]Key Laboratory of Micro&Nano Photonic Structures(MOE)and Key Laboratory of Surface Physics,Department of Physics,Fudan University,Shanghai,200433,China [5]School of Science,Technology and Engineering,University of the Sunshine Coast,Fraser Coast Campus,Hervey Bay,QLD,4655,Australia [6]Key Laboratory of Zoological Systematics and Evolution,Institute of Zoology,Chinese Academy of Sciences,Beijing,100101,China

出　　处：《Journal of Bionic Engineering》2024年第5期2395-2408,共14页仿生工程学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(grant nos.31772513 to MXS and 32070470 to APL).

摘　　要：Butterfly coloration originates from the finely structured scales grown on the underlying wing cuticle.Most researchers who study butterfly scales are focused on the static optic properties of cover scales,with few works referring to dynamic optical properties of the scales.Here,the dynamic coloration effect of the multiple scales was studied based on the mea-surements of varying-angle reflection and the characterization of scale flexibility in two species of Lycaenid,Plebejus argyrognomon with violet wings and Polyommatus erotides with blue wings.We explored the angle-dependent color changeability and the color-mediating efficiency of wing scales.It was found that the three main kinds of flexible scales(cover,ground and androconia scales)were asynchronously bent during wing rotation,which caused the discoloration effect.The three layers of composite scales broaden the light signal when compared to the single scale,which may be of great significance to the recognition of insects.Specifically,the androconia scales were shown to strongly contribute to the overall wing coloration.The cover scale coloration was ascribed to the coherence scattering resulted from the short-range order at intermediate spatial frequencies from the 2D Fourier power spectra.Our findings are expected to deepen the understanding of the complex characteristics of biological coloration and to provide new inspirations for the fabrication of biomimetic flexible discoloration materials.

关 键 词：Butterfly scale Angle-dependent reflection Color-mediating efficiency Structural Color 

分 类 号：Q959.4[生物学—动物学] O439[机械工程—光学工程]