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Extreme enhancement of interfacial adhesion by bulk patterning of sacrificial cuts
Sacrificial bonds and hidden length mechanisms are leveraged by many biological systems for enhanced ductility and toughness. in a series of previous papers we modeled this mechanism at the level of collagen fibrils:
http://publish.illinois.edu/mcslabuiuc/files/2017/12/2013-Elbanna-Carlson.pdf
http://publish.illinois.edu/mcslabuiuc/files/2017/12/2013-Lieou-Elbanna-Carlson.pdf
http://publish.illinois.edu/mcslabuiuc/files/2017/12/2014-Wang-Elbanna.pdf
And more recently, we extended the mode to 2D fibrils:
http://publish.illinois.edu/mcslabuiuc/files/2018/01/2018-Kothari-et-al.pdf
In our most recent EML papee, listed below, we further leverage this mechanism in developing secondary sacrificial interfaces that act as fuses that break before the primary interface leading to extreme enhancement in ductility and work of adhesion.
The paper is accessible here:
https://www.sciencedirect.com/science/article/pii/S2352431619300070?dgcid=author
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Comments
3D printed fibres with sacrificial bonds and hidden lengths
Very interesting! Thanks for sharing. I will definitely have a more careful look at these papers. We are also interested in the sacrificial bond and hidden length mechanism. We use a fluid mechanical instability to create microstructured fibers with these sacrificial bonds. We play with the instability parameters to tune the mechanical properties of the fibres accordingly.
Cheers
Thank you!
Dear Frederick, thank you for your valuable feedback. My student brought your recent Soft Matter paper to my attention a couple of weeks ago and we found it very intriguing. Thanks for sharing the Advanced Material paper here. I think you have found a very robust way towards realizing these sacrificial systems and that could significantly broaden their practical application. I look forward to further discussions with you on this topic.