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2015 ; 5
(ä): 10574
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Surface plasmon resonance-induced stiffening of silver nanowires
#MMPMID26024426
Ben X
; Park HS
Sci Rep
2015[May]; 5
(ä): 10574
PMID26024426
show ga
We report the results of a computational, atomistic electrodynamics study of the
effects of electromagnetic waves on the mechanical properties, and specifically
the Young's modulus of silver nanowires. We find that the Young's modulus of the
nanowires is strongly dependent on the optical excitation energy, with a peak
enhancement occurring at the localized surface plasmon resonance frequency. When
the nanowire is excited at the plasmon resonance frequency, the Young's modulus
is found to increase linearly with increasing nanowire aspect ratio, with a
stiffening of nearly 15% for a 2 nm cross section silver nanowire with an aspect
ratio of 3.5. Furthermore, our results suggest that this plasmon
resonance-induced stiffening is stronger for larger diameter nanowires for a
given aspect ratio. Our study demonstrates a novel approach to actively tailoring
and enhancing the mechanical properties of metal nanowires.