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Effect of substrate properties on isothermal fatigue of aerosol jet printed nano-Ag traces on flex

Published online by Cambridge University Press:  19 July 2019

Roshan Muralidharan
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
Arun Raj
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
Rajesh Sharma Sivasubramony
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
Manu Yadav
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
Mohammed Alhendi
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
Matthew Nilsson
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
Christopher Greene
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
Mark D. Poliks
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
Peter Borgesen*
Affiliation:
System Science and Industrial Engineering, Binghamton University, Binghamton, New York 13902, USA
*
a)Address all correspondence to this author. e-mail: borgesen@binghamton.edu
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Abstract

Sintered nanoparticle structures are macroscopically brittle but quite robust if deposited on a flexible substrate. The effects of a polymer substrate on the stretchability of both brittle and ductile coatings and traces are well established. Systematic effects of substrate properties on the fatigue resistance of aerosol printed nano-Ag are slightly more complex. The present work is focused on the early stages of fatigue, where the resistance increases significantly but cracks are not yet visible. Overall, the fatigue behavior is seen to vary with the combination of substrate modulus and viscoelastic deformation properties. Comparing two common polyimides, the rate of damage was seen to increase faster with increasing amplitude on the less compliant one. Consistently with this increasing the minimum strain in the cycle led to a significantly stronger reduction in damage rates. However, the damage rate remained lower on the less compliant substrate at all amplitudes and strain ranges of practical concern.

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Article
Copyright
Copyright © Materials Research Society 2019 

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