AVS 57th International Symposium & Exhibition
    Nanometer-scale Science and Technology Thursday Sessions
       Session NS-ThM

Paper NS-ThM10
Formation and Characterization of Metallic Glass Nanowire

Thursday, October 21, 2010, 11:00 am, Room La Cienega

Session: Nanowires and Nanoparticles
Presenter: K.S. Nakayama, Tohoku University, Japan
Authors: K.S. Nakayama, Tohoku University, Japan
Y. Yokoyama, Tohoku University, Japan
T. Ono, Tohoku University, Japan
M.W. Chen, Tohoku University, Japan
K. Akiyama, Tohoku University, Japan
T. Sakurai, Tohoku University, Japan
A. Inoue, Tohoku University, Japan
Correspondent: Click to Email
Metallic glasses have exciting potential for structural, chemical, and magnetic applications with the sizes ranging from micrometer to centimeter, but the fabrication and characterization down to nanoscale remains an important challenge. Progress has been hindered by the lack of bottom-up methodologies to produce amorphous nanostructures. Recently, we show the self-organized amorphous nanowires that are formed on the fracture surfaces of bulk metallic glasses [Nakayama et al., Nano Lett. 8, 516-519 (2008)]. However, it is difficult to control their morphologies because they were created by instantaneous fracture processes. Here we report the controlled formation and mechanical characterization of individual amorphous nanowires. We find that they have a high strength with the excellent flexibility where the elastic modulus is much smaller than that of the bulk owing to the hyper-excess free volume in nanowire. The nanowire composed of amorphous materials leading to outstanding mechanical properties would offer a new paradigm for development in nanotechnology and materials science.