Nanoscale Rigidity in Cross-Linked Micelle Networks Revealed by XPCS Nanorheology

Autor:	Reiser, M., Hallmann, J., Möller, J., Kazarian, K., Orsi, D., Randolph, L., Rahmann, H., Westermeier, F., Stellamanns, E., Sprung, M., Zontone, F., Cristofolini, L., Gutt, C., Madsen, A.
Rok vydání:	2020
Předmět:	Condensed Matter::Soft Condensed Matter Soft Condensed Matter (cond-mat.soft) FOS: Physical sciences Condensed Matter - Soft Condensed Matter
DOI:	10.48550/arxiv.2010.08267
Popis:	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. Comment: 5 pages, 5 figures
Databáze:	OpenAIRE
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