The ultimate strength of glass silica nanowires
The ultimate strength of glass silica nanowires
In the past decade nanowires have attracted an increase interest because of their extraordinary mechanical strength. In fact, material properties in the nanoregime are extremely different from those found in macroscopic samples: few crystalline materials have shown a tensile strength in excess of 10 GPa in the form of nanowires. Still the length of defect-free crystalline nanowires is limited to a few millimeters and the strength of long nanowires is compromised by defects. The strength of glass nanowires is less affected by single defects. In this paper we present the ultimate strength of glass silica nanowires manufactured by a top-down fabrication technique; this is the highest value reported for glass materials. The measured ultimate strength is in excess of 10 GPa and increases for decreasing nanowire diameters. Scanning electron micrographs of the broken fragments showed a fragile rupture.
831-835
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Payne, David N.
4f592b24-707f-456e-b2c6-8a6f750e296d
11 February 2009
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Payne, David N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Brambilla, Gilberto and Payne, David N.
(2009)
The ultimate strength of glass silica nanowires.
Nano Letters, 9 (2), .
(doi:10.1021/nl803581r).
Abstract
In the past decade nanowires have attracted an increase interest because of their extraordinary mechanical strength. In fact, material properties in the nanoregime are extremely different from those found in macroscopic samples: few crystalline materials have shown a tensile strength in excess of 10 GPa in the form of nanowires. Still the length of defect-free crystalline nanowires is limited to a few millimeters and the strength of long nanowires is compromised by defects. The strength of glass nanowires is less affected by single defects. In this paper we present the ultimate strength of glass silica nanowires manufactured by a top-down fabrication technique; this is the highest value reported for glass materials. The measured ultimate strength is in excess of 10 GPa and increases for decreasing nanowire diameters. Scanning electron micrographs of the broken fragments showed a fragile rupture.
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Published date: 11 February 2009
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 65780
URI: http://eprints.soton.ac.uk/id/eprint/65780
ISSN: 1530-6984
PURE UUID: bac3aee2-4b8e-4dcb-ac79-77605a786c54
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Date deposited: 23 Mar 2009
Last modified: 14 Mar 2024 02:45
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Author:
Gilberto Brambilla
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