title: Functionalization of metallic glasses through hierarchical patterning.
abstract: Surface engineering over multiple length scales is critical for electronics, photonics, and enabling multifunctionality in synthetic materials. Here, we demonstrate a sequential embossing technique for building multi-tier patterns in metals by controlling the size-dependent thermoplastic forming of metallic glasses. Sub-100 nm to millimeter sized features are sculpted sequentially to allow an exquisite control of surface properties. The process can be integrated with net-shaping to transfer functional patterns on three-dimensional metal parts.
authors.affiliation: Department of Mechanical Engineering, Texas Tech University , Lubbock, Texas 79409, United States.
authors.forename: Molla
authors.initials: M
authors.lastname: Hasan
authors.forename: Jan
authors.initials: J
authors.lastname: Schroers
authors.forename: Golden
authors.initials: G
authors.lastname: Kumar
keywords: Metallic glass; functional surfaces; hierarchical patterns; thermoplastic embossing; wetting