Solutions of wormlike micelles can form cross-linked networks on microscopic length scales. The unique mechanical properties of these complex fluids are driven by the interplay between the network structure and dynamics which are investigated by plate-plate rheometry and X-ray photon correlation spectroscopy~(XPCS) nanorheology. Intensity auto-correlation functions of tracer nanoparticles~(NPs) dispersed in micelle solutions were recorded which captured both the slow structural network relaxation and the short-time dynamics of NPs trapped in the network. The results are indicative of a resonance-like dynamic behavior of the network on the nanoscale that develops as a consequence of the intrinsic short-range rigidity of individual micelle chains.
@article{arxiv.2010.08267,
title = {Nanoscale Rigidity in Cross-Linked Micelle Networks Revealed by XPCS Nanorheology},
author = {M. Reiser and J. Hallmann and J. Möller and K. Kazarian and D. Orsi and L. Randolph and H. Rahmann and F. Westermeier and E. Stellamanns and M. Sprung and F. Zontone and L. Cristofolini and C. Gutt and A. Madsen},
journal= {arXiv preprint arXiv:2010.08267},
year = {2020}
}