Nano-Forging of Bulk Metallic Glasses
Abstract
This report results from a contract tasking Risoe National Laboratory as follows: Components with microscale features perform mechanical functions in MEMS devices and store information at the optical (micrometer) scale. Since single-cell microorganisms are on the order of 10 micrometers in size, surfaces with specific topologies on the micrometer size scale have the possibility of topological interactions with such living organisms. Surfaces with nanoscale topological features reduce the size of MEMS devices into the nanoscale regime and have the potential for topological interaction with viruses or large organic molecules. A manufacturing process to rapidly and cheaply create metal surfaces with topological features in the 10 - 10000 nm scale has not been demonstrated. A potential technique is forging of bulk metallic glasses (BMG). High fidelity replication of topological sine-wave patterns with a periodicity of 800 nm has already been demonstrated at Risoe using a BMG of the Mg-Cu-Y type. The advantages of BMG forging are an ability to attain smaller size scales and increased manufacturing speed compared to photolithography, electron beam lithography, and focused ion beam methods. The objectives of the proposed work are to demonstrate the ability to create BMG surfaces with nanoscale surface features, and to establish the capability of existing FEA methods to model BMG flow at these size scales.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 13, 2006
- Accession Number
- ADA524295
Entities
People
- John A. Wert