Bio-inspired multifunctional metallic glass

作     者：Yaxu He Yun Peng Zhou Li Jiang Ma Xiyao Zhang Kesong Liu Weihua Wang Lei Jiang 

作者机构：Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of EducationBeijing Key Laboratory of Bio-Inspired Energy Materials and DevicesSchool of Chemistry and EnvironmentBeihang UniversityBeijing100191China Institute of PhysicsChinese Academy of SciencesBeijing100190China Beijing National Laboratory for Molecular SciencesKey Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2016年第59卷第3期

页      面：271-276页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China (21273016, 51271195) the National Basic Research Program of China (2013CB933003, 2015CB856800) the Program for New Century Excellent Talents in University, Beijing Higher Education Young Elite Teacher Project, the Fundamental Research Funds for the Central Universities, 111 project (B14009) the Key Research Program of the Chinese Academy of Sciences (KJZDEW-M01, M03) 

主　　题：多功能一体化 大块金属玻璃 仿生 金属材料 超疏水性 BMG 纳米结构 热塑性成形 

摘      要：As a novel class of metallic materials, bulk metallic glasses(BMGs) have attracted a great deal of attention owing to their technological promise for practical engineering applications. In nature, biological materials exhibit inherent multifunctional integration, which provides some inspiration for scientists and engineers to construct multifunctional artificial materials. In this contribution, inspired by superhydrophobic self-cleaning lotus leaves, multifunctional bulk metallic glasses(BMG) materials have been fabricated through the thermoplastic forming-based process followed by the SiO_2/soot deposition. To mimic the microscale papillae of the lotus leaf, the BMG micropillar with a hemispherical top was first fabricated using micro-patterned silicon templates based on thermoplastic forming. The deposited randomly distributed SiO_2/soot nanostructures covered on BMG micropillars are similar to the branch-like nanostructures on papillae of the lotus leaf. Micro-nanoscale hierarchical structures endow BMG replica with superhydrophobicity, a low adhesion towards water, and self-cleaning, similar to the natural lotus leaf. Furthermore, on the basis of the observation of the morphology of BMG replica in the Si mould, the formation mechanism of BMG replica was proposed in this work. The BMG materials with multifunction integration would extend their practical engineering applications and we expect this method could be widely adopted for the fabrication of other multifunctional BMG surfaces.