In-operando fatigue behavior of gold metallization lines on polyimide substrate
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In: Scripta materialia, Vol. 186.2020, No. September, 2020, p. 48-51.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - In-operando fatigue behavior of gold metallization lines on polyimide substrate
AU - Glushko, Oleksandr
AU - Cordill, Megan J.
PY - 2020
Y1 - 2020
N2 - Although in-situ monitoring of electrical resistance of polymer-supported thin films during a mechanical test is frequently used, the impact of the magnitude of electric current on material behavior in such experiments remained unknown. Here, we report on cyclic straining of polymer-supported gold metallization lines under direct current of different magnitudes. Fatigue damage in form of localized extrusions becomes more pronounced with increasing current as a result of Joule heat and material softening. After a critical current value is reached, crack propagation results in a local decrease of line cross-section leading to thermal runaway and open circuit failure.
AB - Although in-situ monitoring of electrical resistance of polymer-supported thin films during a mechanical test is frequently used, the impact of the magnitude of electric current on material behavior in such experiments remained unknown. Here, we report on cyclic straining of polymer-supported gold metallization lines under direct current of different magnitudes. Fatigue damage in form of localized extrusions becomes more pronounced with increasing current as a result of Joule heat and material softening. After a critical current value is reached, crack propagation results in a local decrease of line cross-section leading to thermal runaway and open circuit failure.
U2 - 10.1016/j.scriptamat.2020.04.021
DO - 10.1016/j.scriptamat.2020.04.021
M3 - Article
VL - 186.2020
SP - 48
EP - 51
JO - Scripta materialia
JF - Scripta materialia
SN - 1359-6462
IS - September
ER -