Ultrafast laser processing of silk films by bulging and ablation for optical functional devices  

作　　者：Ming Qiao Huimin Wang Heng Guo Ma Luo Yuzhi Zhao Haoze Han Jianfeng Yan Yingying Zhang 

机构地区：[1]State Key Laboratory of Tribology in Advanced Equipment,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China [2]Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education,Department of Chemistry,Tsinghua University,Beijing 100084,China

出　　处：《Light(Advanced Manufacturing)》2024年第3期28-38,共11页光（先进制造）（英文）

基　　金：supported by the National Natural Science Foundation of China(52075289);China Postdoctoral Science Foundation(2023M731942);the Shuimu Tsinghua Scholar Program of Tsinghua University,and the Tsinghua-Jiangyin Innovation Special Fund(TJISF,2023JYTH0104).We would like to thank Dr.Fei Gu and Dr.Xi Lu at Quantum Design for their assistance with the nano-IR image measurements.

摘　　要：Organic proteins are attractive owing to their unique optical properties,remarkable mechanical characteristics,and biocompatibility.Manufacturing multifunctional structures on organic protein films is essential for practical applications;however,the controllable fabrication of specific structures remains challenging.Herein,we propose a strategy for creating specific structures on silk film surfaces by modulating the bulging and ablation of organic materials.Unique surface morphologies such as bulges and craters with continuously varying diameters were generated based on the controlled ultrafast laser-induced crystal-form transition and plasma ablation of the silk protein.Owing to the anisotropic optical properties of the bulge/crater structures with different periods,the fabricated organic films can be used for large-scale inkless color printing.By simultaneously engineering bulge/crater structures,we designed and demonstrated organic film-based optical functional devices that achieves holographic imaging and optical focusing.This study provides a promising strategy for the fabrication of multifunctional micro/nanostructures that can broaden the potential applications of organic materials.

关 键 词：Ultrafast laser PROTEIN BULGING Ablation Optical functional devices 

分 类 号：TN24[电子电信—物理电子学]