Nano Science and Technology Institute
Nanotech 2006 Vol. 1
Nanotech 2006 Vol. 1
Technical Proceedings of the 2006 NSTI Nanotechnology Conference and Trade Show, Volume 1
Chapter 1: Nanoscale Structures and Devices

Euler Buckling of Individual SiGe/Si Microtubes

Authors:L. Zhang, L.X. Dong, D.J. Bell, B.J. Nelson, C. Sch├Ânenberger and D. Gr├╝tzmacher
Affilation:Paul Scherrer Institut, CH
Pages:42 - 45
Keywords:semiconductor nanotube, SiGe, Euler buckling
Abstract:Freestanding Si/SiGe microtubes have been fabricated using the roll-up technique of strained bilayer structures. Si/SiGe bilayers of 18 nm thickness have been rolled into tubes of 1.3 μm diameter. Tubes of 60 μm length have been detached from the substrate and placed between a nanorobotic manipulaltor and an AFM tip to analyse their mechanical properties using the Euler buckling method. The tubes proved to be mechanical robust with a flexural rigidity (EI) amounting to 4.1*10-15 Nm2. The presented manipulation technique has been proven to be a suitable approach to characterize the mechanical properties of these self-scrolled semiconductor structures. The results give insights into the suitability of these structures for micromechanical devices.
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