Mechanism for nanotube formation from self-bending nanofilms driven by atomic-scale surface-stress imbalance

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Publication Type Journal Article
School or College College of Engineering
Department Materials Science & Engineering
Creator Liu, Feng
Other Author Zang, Ji; Huang, Minghuang
Title Mechanism for nanotube formation from self-bending nanofilms driven by atomic-scale surface-stress imbalance
Date 2007-04
Description We demonstrate, by theoretical analysis and molecular dynamics simulation, a mechanism for fabricating nanotubes by self-bending of nanofilms under intrinsic surface-stress imbalance due to surface reconstruction. A freestanding Si nanofilm may spontaneously bend itself into a nanotube without external stress load, and a bilayer SiGe nanofilm may bend into a nanotube with Ge as the inner layer, opposite of the normal bending configuration defined by misfit strain. Such rolled-up nanotubes can accommodate a high level of strain, even beyond the magnitude of lattice mismatch, greatly modifying the tube electronic and optoelectronic properties.
Type Text
Publisher American Physical Society
Journal Title Physical Review Letters
Volume 98
Issue 14
DOI 10.1103/PhysRevLett.98.146102
citatation_issn 0031-9007
Subject Nanotube formation; Self-bending nanofilms; Surface-stress imbalance
Subject LCSH Nanotubes; Nanostructured materials
Language eng
Bibliographic Citation Zang, J., Huang, M., & Liu F. (2007). Mechanism for nanotube formation from self-bending nanofilms driven by atomic-scale surface-stress imbalance. Physical Review Letters, 98, 146102.
Rights Management (c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.98.146102
Format Medium application/pdf
Format Extent 650,671 bytes
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Reference URL https://collections.lib.utah.edu/ark:/87278/s6kd2gbz