Electron-beam-assisted superplastic shaping of nanoscale amorphous silica
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Open Access
- 1 June 2010
- journal article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 1 (1), 24
- https://doi.org/10.1038/ncomms1021
Abstract
Glasses are usually shaped through the viscous flow of a liquid before its solidification, as practiced in glass blowing. At or near room temperature (RT), oxide glasses are known to be brittle and fracture upon any mechanical deformation for shape change. Here, we show that with moderate exposure to a low-intensity (10(-4) per second. We show not only large homogeneous plastic strains in compression for nanoparticles but also superplastic elongations >200% in tension for nanowires (NWs). We also report the first quantitative comparison of the load-displacement responses without and with the e-beam, revealing dramatic difference in the flow stress (up to four times). This e-beam-assisted superplastic deformability near RT is useful for processing amorphous silica and other conventionally-brittle materials for their applications in nanotechnology.Keywords
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