• Corpus ID: 219792295

Particle Diffusivity and Free-Energy Profiles in Inhomogeneous Hydrogel Systems from Time-Resolved Penetration Profiles

@article{WoldeKidan2020ParticleDA,
  title={Particle Diffusivity and Free-Energy Profiles in Inhomogeneous Hydrogel Systems from Time-Resolved Penetration Profiles},
  author={Amanuel Wolde-Kidan and Anna Herrmann and Albert Prause and Michael Gradzielski and Rainer Haag and Stephan Block and Roland R. Netz},
  journal={arXiv: Soft Condensed Matter},
  year={2020}
}
A combined experimental/theoretical method to simultaneously determine diffusivity and free-energy profiles of particles that penetrate into inhomogeneous hydrogel systems is presented. As the only input, arbitrarily normalized concentration profiles from fluorescence intensity data of labeled tracer particles for different penetration times are needed. The method is applied to dextran molecules of varying size which penetrate into hydrogels of polyethylene-glycol (PEG) chains with different… 

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