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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Buckling behavior of highly oriented silver nanowires encapsulated within layer-by-layer films

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Title
Buckling behavior of highly oriented silver nanowires encapsulated within layer-by-layer films
Author
Gunawidjaja, RayKo, HyunhyubJiang, ChaoyangTsukruk, Vladimir V.
Keywords
Composite stiffness; Metallic nanowires; Nanowire orientation; Silver nanowires
Issue Date
2007-04
Publisher
AMER CHEMICAL SOC
Citation
CHEMISTRY OF MATERIALS, v.19, no.8, pp.2007 - 2015
Abstract
Unidirectionally oriented silver nanowires encapsulated into a nanoscale polymeric film result in anisotropic mechanical response of the composite film with much suffer (fivefold) properties in the direction of nanowire orientation. This difference is caused by the fact that under a longitudinal compressive stress (parallel to the direction of orientation), the individual nanowires undergo the buckling process, thus, contributing into the higher composite stiffness of the film. This matrix-induced buckling phenomenon can be used as a fast and straightforward method of measuring the elastic modulus of the metallic nanowires from the buckling spacing with good precision. Using Euler's equation for the buckling instability of a slender column, the Young's modulus of silver nanowires was determined to be 118 ± 14 GPa, which is higher than that of the bulk silver but falls within the range of values obtained with other independent measurements.
URI
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DOI
10.1021/cm063022e
ISSN
0897-4756
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ECHE_Journal Papers
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