Ultrahigh Strength Single Crystalline Nanowhiskers Grown by Physical Vapor Deposition
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- 28 July 2009
- journal article
- letter
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 9 (8), 3048-3052
- https://doi.org/10.1021/nl9015107
Abstract
The strength of metal crystals is reduced below the theoretical value by the presence of dislocations or by flaws that allow easy nucleation of dislocations. A straightforward method to minimize the number of defects and flaws and to presumably increase its strength is to increase the crystal quality or to reduce the crystal size. Here, we describe the successful fabrication of high aspect ratio nanowhiskers from a variety of face-centered cubic metals using a high temperature molecular beam epitaxy method. The presence of atomically smooth, faceted surfaces and absence of dislocations is confirmed using transmission electron microscopy investigations. Tensile tests performed in situ in a focused-ion beam scanning electron microscope on Cu nanowhiskers reveal strengths close to the theoretical upper limit and confirm that the properties of nanomaterials can be engineered by controlling defect and flaw densities.Keywords
This publication has 35 references indexed in Scilit:
- Synthesis of gold nanowires with controlled crystallographic characteristicsApplied Physics A, 2006
- Size- and shape-controlled GaAs nano-whiskers grown by MOVPE: a growth studyJournal of Crystal Growth, 2003
- Indium phosphide nanowires as building blocks for nanoscale electronic and optoelectronic devicesNature, 2001
- VAPOR-LIQUID-SOLID MECHANISM OF SINGLE CRYSTAL GROWTHApplied Physics Letters, 1964
- The De Haas–Van Alphen Effect in CopperNature, 1959
- Domain Observations on Iron WhiskersJournal of Applied Physics, 1958
- Superconductivity of Microscopic Tin FilamentsPhysical Review B, 1957
- The filamentary growth of metalsProgress in Metal Physics, 1956
- Tensile Strength of WhiskersJournal of Applied Physics, 1956
- The growth of whiskers by the reduction of metal saltsActa Metallurgica, 1956