Crack deflecting microstructure for improved electro-mechanical lifetimes of flexible systems
Research output: Contribution to journal › Article › Research › peer-review
Standard
In: Materials letters, Vol. 244.2019, No. 1 June, 13.02.2019, p. 47-49.
Research output: Contribution to journal › Article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex - Download
}
RIS (suitable for import to EndNote) - Download
TY - JOUR
T1 - Crack deflecting microstructure for improved electro-mechanical lifetimes of flexible systems
AU - Cordill, Megan J.
AU - Jörg, Tanja
AU - Glushko, Oleksandr
AU - Franz, Robert
AU - Mitterer, Christian
PY - 2019/2/13
Y1 - 2019/2/13
N2 - Polymer supported metal thin films for flexible and stretchable applications need to have exceptional electro-mechanical behavior. Typically, brittle metal films thicker than 300 nm will fail at low strains. It will be demonstrated that with residual stress and microstructural tuning, a 500 nm thick Mo film on polyimide has a high crack onset strain and does not fail electrically after 1000 tensile straining cycles of 1% due to a novel zig–zag microstructure. The zig–zag microstructure imparts a crack deflecting behavior which ensures longer lifetimes. As a consequence, a high crack onset strain does not indicate better behavior under cyclic loading conditions.
AB - Polymer supported metal thin films for flexible and stretchable applications need to have exceptional electro-mechanical behavior. Typically, brittle metal films thicker than 300 nm will fail at low strains. It will be demonstrated that with residual stress and microstructural tuning, a 500 nm thick Mo film on polyimide has a high crack onset strain and does not fail electrically after 1000 tensile straining cycles of 1% due to a novel zig–zag microstructure. The zig–zag microstructure imparts a crack deflecting behavior which ensures longer lifetimes. As a consequence, a high crack onset strain does not indicate better behavior under cyclic loading conditions.
UR - http://www.scopus.com/inward/record.url?scp=85061722640&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2019.02.039
DO - 10.1016/j.matlet.2019.02.039
M3 - Article
VL - 244.2019
SP - 47
EP - 49
JO - Materials letters
JF - Materials letters
SN - 0167-577X
IS - 1 June
ER -