Mechanics of nanosprings: Stiffness and Young’s modulus of molybdenum-based nanocrystals
- 3 June 2002
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 80 (22) , 4244-4246
- https://doi.org/10.1063/1.1483927
Abstract
We describe measurements of the stiffness and Young’s modulus,Y of single crystals of molybdenum-based compounds. Atomic force microscopy is used first to image, and then to perform stiffness measurements on crystals which are growing up out of a substrate. Y is extracted by comparing the measured stiffness with that calculated from a continuum elasticity model of the crystals, whose experimentally indeterminate parameters are the Young’s modulus and the geometry. We find a value for Y in the range 0.8–1.4 TPa, depending on the assumed geometry of the nanocrystal. As these crystals are essentially perfectly ordered on the micron scale, this opens the possibility of forming composite materials of immense strength.Keywords
This publication has 11 references indexed in Scilit:
- Ultrathin Single-Crystalline Silver Nanowire Arrays Formed in an Ambient Solution PhaseScience, 2001
- Single Crystals of Single-Walled Carbon Nanotubes Formed by Self-AssemblyScience, 2001
- Self-Assembly of Subnanometer-Diameter Single-Wall MoS 2 NanotubesScience, 2001
- Strain energy and Young’s modulus of single-wall carbon nanotubes calculated from electronic energy-band theoryPhysical Review B, 2000
- Young’s modulus of single-walled nanotubesPhysical Review B, 1998
- Nanobeam Mechanics: Elasticity, Strength, and Toughness of Nanorods and NanotubesScience, 1997
- Elastic Properties of Carbon Nanotubes and NanoropesPhysical Review Letters, 1997
- Nanomechanics of Carbon Tubes: Instabilities beyond Linear ResponsePhysical Review Letters, 1996
- Site-controlled growth of nanowhiskersApplied Physics Letters, 1995
- Helical microtubules of graphitic carbonNature, 1991