Journal
JOURNAL OF APPLIED PHYSICS
Volume 106, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3267154
Keywords
amorphisation; bending; elemental semiconductors; gallium; germanium; ion beam effects; ion implantation; nanowires; plastic deformation; plastic flow
Categories
Funding
- Center for Integrated Nanotechnologies
- U. S. Department of Energy, Office of Basic Energy Sciences [DE-AC52-06NA25396]
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Nanowires have generated considerable interest as nanoscale interconnects and as active components of both electronic and electromechanical devices. However, in many cases, manipulation and modification of nanowires are required to fully realize their potential. It is essential, for instance, to control the orientation and positioning of nanowires in some specific applications. This work demonstrates a simple method to reversibly control the shape and the orientation of Ge nanowires using ion beams. Crystalline nanowires were amorphized by 30 keV Ga(+) implantation. Subsequently, viscous flow and plastic deformation occurred causing the nanowires to bend toward the beam direction. The bending was reversed multiple times by ion implanting the opposite side of the nanowires, resulting in straightening and subsequent bending into that opposite direction. This effect demonstrates the detailed manipulation of nanoscale structures is possible through the use of ion irradiation.
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