IRG2 : Multi-scale Surface Engineering with Metallic Glasses

IRG2 Leaders: Corey O’Hern and Jan  Schroers

The new Multi-scale Surface Engineering with Metallic Glasses IRG addresses the grand challenge of how to control surface properties through topographical structuring at multiple length scales. Examples include tailoring biocompatibility, reactivity, friction, adhesion, and wetting to efficiently functionalize surfaces for a wide range of new applications and devices. To this end, nano-imprinting and blow molding, whose application to metallic glasses has been pioneered at Yale, are utilized to create hierarchically structured metal surfaces on length scales ranging from atomic distances to ≈10 μm. The IRG’s intellectual merit is rooted in gaining a fundamental understanding of the deformation of metallic glasses on these length scales and on using this knowledge to create hierarchical surface patterns, often inspired by nature, to achieve and exploit unusual surface properties. The broader impacts of the research will be felt in novel devices, in the understanding and utilization of size-dependent properties, in pushing the limit in imprinting density beyond current constraints, and in efficient and versatile processes to functionalize metallic surfaces. This research program provides undergraduates, graduate students, postdoctoral fellows, and teachers with unique training that allows them to understand complex phenomena on scales ranging from atoms to cm.

Highlights

2016

IRG2: Electrocatalytic Surfaces Using Bulk Metallic Glass Nanostructures     

IRG2: Cooling Speed Affects Ductility of Metallic Glasses       

2015

IRG2: Sacrificial Nanoimprint Lithography of Bulk Metallic Glasses

IRG2:  Nanoscale Imprinting into Bulk Metallic Glasses

2014

IRG2: Shear Enhanced Crystallization Kinetics in a Metallic Glass

IRG2: Engineering Cellular Response Using Nanopatterned Bulk Metallic Glass (BMG)

2013

IRG2: Finding a glass needle in a haystack

IRG2: Predicting the Glass-Forming Ability of Metal Alloys

2012

IRG2: Cell Interactions with Bulk Metallic Glass Surfaces

IRG2: Novel Mechanical Properties of Amorphous Solids