Document Detail

Measurement of the bending strength of vapor-liquid-solid grown silicon nanowires.
MedLine Citation:
PMID:  16608255     Owner:  NLM     Status:  MEDLINE    
The fracture strength of silicon nanowires grown on a [111] silicon substrate by the vapor-liquid-solid process was measured. The nanowires, with diameters between 100 and 200 nm and a typical length of 2 microm, were subjected to bending tests using an atomic force microscopy setup inside a scanning electron microscope. The average strength calculated from the maximum nanowire deflection before fracture was around 12 GPa, which is 6% of the Young's modulus of silicon along the nanowire direction. This value is close to the theoretical fracture strength, which indicates that surface or volume defects, if present, play only a minor role in fracture initiation.
Samuel Hoffmann; Ivo Utke; Benedikt Moser; Johann Michler; Silke H Christiansen; Volker Schmidt; Stephan Senz; Peter Werner; Ulrich Gösele; Christophe Ballif
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Nano letters     Volume:  6     ISSN:  1530-6984     ISO Abbreviation:  Nano Lett.     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-04-12     Completed Date:  2006-06-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  622-5     Citation Subset:  IM    
EMPA Materials Science and Technology, Feuerwerkerstrasse 39, 3602 Thun, Switzerland.
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MeSH Terms
Computer Simulation
Crystallization / methods*
Macromolecular Substances / chemistry
Materials Testing / methods*
Microscopy, Atomic Force / methods*
Models, Chemical
Molecular Conformation
Nanotechnology / methods
Nanotubes / chemistry*,  ultrastructure*
Particle Size
Protein Binding
Silicon / chemistry*
Stress, Mechanical
Tensile Strength
Reg. No./Substance:
0/Macromolecular Substances; 7440-21-3/Silicon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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