文献类型：期刊文献

英文题名：Preparation of Ultrablack Composite Sheets with Excellent Mechanical and Chemical Stability from Sandpaper-Based Template-Imprinting

作者：Chen, Hai Tao[1];Li, Chao Qun[1];Zhan, Hang[1];Mo, Run Wei[1];Zhang, Yu[1];Wang, Jian Nong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：6

期号：11

外文期刊名：ADVANCED MATERIALS TECHNOLOGIES

收录：;EI(收录号：20213010688599);WOS:【SCI-EXPANDED(收录号:WOS:000676110700001)】；

基金：This research was supported by National Key R&D Program of China (2018YFA0208404), National Natural Science Foundation of China (U1362104), and Innovation Program of Shanghai Municipal Education Commission.

语种：英文

外文关键词：chemical and mechanical stability; reflectance; template-imprinting; ultrablack composite sheet

摘要：Ultrablack materials have applications in wide areas such as visible stealth, solar cells, and sea water evaporation. However, their high production cost, low mechanical property, and poor chemical stability have restricted their wide applications. Herein, a low-cost method is reported for preparing large-area ultrablack composite sheets with excellent mechanical and chemical stability. This is achieved by mixing a light absorber and transparent resin, and then copying and molding microconvex structures of sandpaper. The result shows that the absorption rate of the prepared composite sheet can reach more than 99% in the visible light range. More importantly, its performance remains almost unchanged after many cycles of mechanical stretching and long-term chemical soaking. This excellent ultrablack performance is mainly attributed to the light-trap effect of the subwavelength convex structure with the light absorber embedded in the resilient resin. Such composite sheets open a new pathway to developing high-performance ultrablack materials with practical applications.