報(bào)告題目：各向同性及各向異性仿生光學(xué)結(jié)構(gòu)
報(bào)告人：葛鄧騰研究員，東華大學(xué)功能材料研究所
報(bào)告時(shí)間：2017年9月18日（周一）14:30-16:00
報(bào)告地點(diǎn)：新主樓A849
邀請(qǐng)人：徐曄
Isotropic and Anisotropic Bionic Optical Structures
Dengteng Ge
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
Institute of Functional Materials, Donghua University, Shanghai 201620, P. R. China
Abstract: Bios have impressive and various optical functions, e.g. Morph butterfly wings, opal and mother of pearl have shining and iridescent structure color and octopus and chameleon can change color under stimuli. Beside the color in the bios, we are also interested in light transportation and its space distribution controlled by the biostructures. Learning from quasi-amorphous structure in the biostructures, we developed a solvent controlled spray method to generate quasi-amorphous silica NPs arrays and various uniform structure colors were realized by tuning the particle size. Further, we developed tool-independent photonic ink which could applied on various substrate by the bumpy nanoparticles. We also demonstrated many applications of uniform structure color e.g. ink, displayer and security. Recently we found a special butterfly species Carystoides escalantei which has unique retroreflection on its white spots. It was found the standing scales with periodical ridges and ribs were the mainly reason to form anisotropic reflection. The biological functions and evolution of the white spots also was discussed. Based on the idea from Carystoides, we fabricated microstrips hydrogel arrays with cuts. The hydrogel films changed the opacity and light transfer direction when the structure buckled under water.
個(gè)人簡(jiǎn)介：東華大學(xué)功能材料研究所，研究員、博導(dǎo)，上海浦江人才。2011年在哈爾濱工業(yè)大學(xué)獲得工學(xué)博士學(xué)位，2012年-2015年在美國(guó)賓夕法尼亞大學(xué)（UPenn）材料系從事博士后研究工作，2015年12月受聘于東華大學(xué)，主要從事動(dòng)態(tài)光學(xué)界面、仿生微納結(jié)構(gòu)和功能復(fù)合材料的研究，并致力于上述材料在智能窗、能源與傳感、結(jié)構(gòu)材料等領(lǐng)域的應(yīng)用?，F(xiàn)已在PNAS, Advanced Materials, Nano Energy等雜志上發(fā)表研究文章30余篇，已獲得PTC專利1項(xiàng)、中國(guó)發(fā)明專利4項(xiàng)。
