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Superelasticity

Active superelasticity of epithelial tissues

Submitted by Sohan Kale on

Sharing our recent article in Nature that uncovers a surprising aspect of the mechanics of epithelial tissues, termed ‘active superelasticity’, which allows them to undergo extreme reversible deformations under constant tension - https://www.nature.com/articles/s41586-018-0671-4 (read-only link: https://rdcu.be/batkj)

Nitinol, stent fracture and related issues

Submitted by Xiao-Yan Gong on
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Stent and Nitinol have revolutionized the medicine.  In past decades, guidewires, stents, filters and many minimumly invasive devices and implants are made of Nitinol and they proved to be very successful.

However, the fatigue behavior of Nitinol has not been well understood.  As a consequences, many stent fractures have been observed in-vivo.  Below is a list of misconcepts that may contribute to the widely observed in-vivo fractures on Nitinol stents: