Electron Beam Irradiation Stiffens Zinc Tin Oxide Nanowires

We report a remarkable phenomenon that electron beam irradiation (EBI) significantly enhances the Young’s modulus of zinc tin oxide (ZTO) nanowires (NWs), up to a 40% increase compared with the pristine NWs. In situ uniaxial buckling tests on individual NWs were conducted using a nanomanipulator ins...

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Veröffentlicht in:	Nano letters 2011-11, Vol.11 (11), p.4885-4889
Hauptverfasser:	Zang, Jianfeng, Bao, Lihong, Webb, Richard A, Li, Xiaodong
Format:	Artikel
Sprache:	eng
Schlagworte:	Accounting Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Elastic Modulus - radiation effects Electron beams Electrons Exact sciences and technology Hardness - radiation effects Irradiation Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Materials science Materials Testing Mechanical and acoustical properties of condensed matter Mechanical properties of nanoscale materials Molecular Conformation - radiation effects Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Nanostructure Nanotubes - chemistry Nanotubes - radiation effects Nanotubes - ultrastructure Nanowires Physics Quantum wires Radiation effects on specific materials Resistivity Scanning electron microscopy Structure of solids and liquids crystallography Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Tin Compounds - chemistry Tin Compounds - radiation effects Tin oxides Zinc Zinc Oxide - chemistry Zinc Oxide - radiation effects
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Zusammenfassung:	We report a remarkable phenomenon that electron beam irradiation (EBI) significantly enhances the Young’s modulus of zinc tin oxide (ZTO) nanowires (NWs), up to a 40% increase compared with the pristine NWs. In situ uniaxial buckling tests on individual NWs were conducted using a nanomanipulator inside a scanning electron microscope. We propose that EBI results in substantial atomic bond contraction in ZTO NWs, accounting for the observed mechanically stiffening. This argument is supported by our experimental results that EBI also reduces the electrical conductivity of ZTO NWs.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl2027519