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The effect of ultrasonic excitation on the electrical properties and microstructure of printed electronic conductive inks

Bournias-Varotsis, Alkaios; Harris, Russell A. and Friel, Ross J. LU (2015) 38th International Spring Seminar on Electronics Technology, ISSE 2015 In ISSE 2015 - 38th International Spring Seminar on Electronics Technology, Proceedings 2015-September. p.140-145
Abstract

Ultrasonic Additive Manufacturing (UAM) is an advanced manufacturing technique, which enables the embedding of electronic components and interconnections within solid aluminium structures, due to the low temperature encountered during material bonding. In this study, the effects of ultrasonic excitation, caused by the UAM process, on the electrical properties and the microstructure of thermally cured screen printed silver conductive inks were investigated. The electrical resistance and the dimensions of the samples were measured and compared before and after the ultrasonic excitation. The microstructure of excited and unexcited samples was examined using combined Focused Ion Beam and Scanning Electron Microscopy (FIB/SEM) and optical... (More)

Ultrasonic Additive Manufacturing (UAM) is an advanced manufacturing technique, which enables the embedding of electronic components and interconnections within solid aluminium structures, due to the low temperature encountered during material bonding. In this study, the effects of ultrasonic excitation, caused by the UAM process, on the electrical properties and the microstructure of thermally cured screen printed silver conductive inks were investigated. The electrical resistance and the dimensions of the samples were measured and compared before and after the ultrasonic excitation. The microstructure of excited and unexcited samples was examined using combined Focused Ion Beam and Scanning Electron Microscopy (FIB/SEM) and optical microscopy. The results showed an increase in the resistivity of the silver tracks after the ultrasonic excitation, which was correlated with a change in the microstructure: the size of the silver particles increased after the excitation, suggesting that inter-particle bonding has occurred. The study also highlighted issues with short circuiting between the conductive tracks and the aluminium substrate, which were attributed to the properties of the insulating layer and the inherent roughness of the UAM substrate. However, the reduction in conductivity and observed short circuiting were sufficiently small and rare, which leads to the conclusion that printed conductive tracks can function as interconnects in conjunction with UAM, for the fabrication of novel smart metal components.

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Please use this url to cite or link to this publication:
author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
in
ISSE 2015 - 38th International Spring Seminar on Electronics Technology, Proceedings
volume
2015-September
pages
6 pages
publisher
IEEE Computer Society
conference name
38th International Spring Seminar on Electronics Technology, ISSE 2015
external identifiers
  • scopus:84983208769
ISBN
9781479988600
DOI
10.1109/ISSE.2015.7247978
language
English
LU publication?
no
id
1e948c7c-8860-41d5-831c-99c47e6423ff
date added to LUP
2017-01-23 09:48:48
date last changed
2017-08-01 13:36:05
@inproceedings{1e948c7c-8860-41d5-831c-99c47e6423ff,
  abstract     = {<p>Ultrasonic Additive Manufacturing (UAM) is an advanced manufacturing technique, which enables the embedding of electronic components and interconnections within solid aluminium structures, due to the low temperature encountered during material bonding. In this study, the effects of ultrasonic excitation, caused by the UAM process, on the electrical properties and the microstructure of thermally cured screen printed silver conductive inks were investigated. The electrical resistance and the dimensions of the samples were measured and compared before and after the ultrasonic excitation. The microstructure of excited and unexcited samples was examined using combined Focused Ion Beam and Scanning Electron Microscopy (FIB/SEM) and optical microscopy. The results showed an increase in the resistivity of the silver tracks after the ultrasonic excitation, which was correlated with a change in the microstructure: the size of the silver particles increased after the excitation, suggesting that inter-particle bonding has occurred. The study also highlighted issues with short circuiting between the conductive tracks and the aluminium substrate, which were attributed to the properties of the insulating layer and the inherent roughness of the UAM substrate. However, the reduction in conductivity and observed short circuiting were sufficiently small and rare, which leads to the conclusion that printed conductive tracks can function as interconnects in conjunction with UAM, for the fabrication of novel smart metal components.</p>},
  author       = {Bournias-Varotsis, Alkaios and Harris, Russell A. and Friel, Ross J.},
  booktitle    = {ISSE 2015 - 38th International Spring Seminar on Electronics Technology, Proceedings},
  isbn         = {9781479988600},
  language     = {eng},
  month        = {09},
  pages        = {140--145},
  publisher    = {IEEE Computer Society},
  title        = {The effect of ultrasonic excitation on the electrical properties and microstructure of printed electronic conductive inks},
  url          = {http://dx.doi.org/10.1109/ISSE.2015.7247978},
  volume       = {2015-September},
  year         = {2015},
}