Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 58: Nanostructures, Nanostructuring and Nanosized Soft Matter
CPP 58.12: Vortrag
Donnerstag, 4. April 2019, 18:15–18:30, H13
The impact of inhomogeneous distributions and magnetisation of nanoparticles on the equilibrium structure of magnetic filaments — •Deniz Mostarac1, Pedro A. Sanchez1,2, Oleg Gang3,4, and Sofia Kantorovich1,2 — 1University of Vienna, Vienna, Austria — 2Ural Federal University, Ekaterinburg, Russia — 3Columbia University, New York, USA — 4Brookhaven National Laboratory, New York, USA
Construction of smart materials with sophisticated magnetic response by incorporating magnetic particles (MNP's) within permanently cross-linked structures, opens the possibility for applications to highly magneto-responsive systems [1]. Construction of magnetic filaments (MF's polymer-like structures in which as monomers are the magnetic beads) is possible using DNA origami technique [2,3]. Structural inhomogeneities alter the equilibrium properties and the magnetic response of MF's. Using MD simulations, we show that coiling and persistence length of MF's depend on the magnetic particle distributions, along with temperature and applied magnetic field. We compare the structural properties and magnetic behaviour of different configurations of MF's, highlighting that our model takes in to account super-paramagnetic effects. We present an exhaustive, comparative analysis of the field dependent, structural behaviour of MF's.
[1] Sánchez, P. A., et al. Macromolecules 48.20 (2015): 7658-7669. [2] Liu, W., et al. Nature chemistry 8.9 (2016): 867. [3] Tian, Y., et al. Nature materials 15.6 (2016): 654.