Strong absorption in ultra-wide band by surface nano engineering of metallic glass  

作　　者：Jianan Fu Xin Li Zhen Li Fei Sun Wenxin Wen Jinlai Zhao Wenqing Ruan Shuai Ren Zhenxuan Zhang Xiong Liang Jiang Ma 

机构地区：[1]Shenzhen Key Laboratory of High Performance Nontraditional Manufacturing,College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen 518060,China [2]College of Materials Science and Engineering,Shenzhen Key Laboratory of Polymer Science and Technology,Guangdong Research Center for Interfacial Engineering of Functional Materials,Shenzhen 518060,China

出　　处：《Fundamental Research》2025年第1期307-314,共8页自然科学基础研究(英文版)

基　　金：supported by the Key Basic and Applied Research Program of Guangdong Province,China(2019B030302010);the National Natural Science Foundation of China(51871157,and 51971150);the National Key Research and Development Program of China(2018YFA0703604).

摘　　要：Broadband light absorption is important for applications such as infrared detectors,solar energy collectors,and photothermal conversion.We propose a facile and common strategy to fabricate light absorbers with strong ultra-wideband absorption.Due to their excellent thermoplastic forming ability,metallic glasses could be patterned into finely arranged nanowire arrays,which show extremely low reflectivity(∼0.6%)in the visible and near-infrared regimes,and a low reflectivity(∼15%)in the mid-infrared regime as caused by multiscale nano spacing,multiple reflections,and plasmonic behavior.The strong absorption at surfaces with nanowires provides excellent photothermal conversion properties.The photothermal properties show that a surface with nanowires can be rapidly heated up to∼160°C at a rate of 28.75°C/s,which is 30 times higher than smooth surfaces.Meanwhile,a surface with nanowires shows a high photothermal conversion efficiency(η_(PT)=56.36%).The fabricated metallic glass absorbers exhibit adaptability as they can be easily formed into various complex shapes and meet the requirements under harsh conditions.The outcomes of our research open the door to manufacturing high-performance absorbers for applications in photothermal electric power generation,desalination,and photodetectors.

关 键 词：Metallic glass Nanoforming Ultra-wideband absorption Photothermal properties Thermoplastic forming 

分 类 号：TB3[一般工业技术—材料科学与工程]