Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session G32: Responsive Polymers, Soft Materials, and Hybrids III
11:15 AM–2:15 PM,
Tuesday, March 3, 2020
Sponsoring Units: DPOLY DSOFT DBIO
Chair: Jinhye Bae, University of California, San Diego
Abstract: G32.00011 : Imaging crack propagation in tough model gels by ultrasound elastography*
Heiva Le Blay
Heiva Le Blay
This project focuses on the use of shear wave elastography for a local elasticity mapping at the vicinity of an advancing crack. Model polymer networks with well-controlled mechanical responses are synthetized following the protocol of Rose et al.. By addition of silica nanoparticles (NPs), these gels combine a covalent polymer network (elasticity) with physical interactions by adsorption of polymer onto silica NPs (viscoelasticity) . The gels are characterized in a wide range of frequencies in tensile mode (small strain rates) coupled with high frequency shear wave spectroscopy described by Deffieux et al..
 Rose, Dizeux, Narita, Hourdet, Marcellan. Macromolecules, 2013
 Rose, Prevoteau, Elziere, Hourdet, Marcellan, Leibler. Nature, 2014
 Deffieux, Montaldo, Tanter, Fink. Trans. Med. Imaging, 2009
*The authors thank the program UpToParis.
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