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C1: Using molecular fields to bridge between particle and continuum representations of macromolecular systems

The goal of this project is to use so-called “molecular field” models – which operate with continuous fields, but still retain explicit information on the molecular structure of materials - as bridges between particle-based and field-based views on macromolecular materials. In the first funding period, we have systematically compared the properties of particle models and established molecular field models, and derived different adaptive resolution schemes that combine the two representations. Building on this, we plan to (i) develop systematic methods for deriving dynamical molecular field models from particle simulations, (ii) further optimize the dynamical adaptive resolution schemes, and (iii) apply them to interesting materials such as transient networks.

Polydispersity Effects on Interpenetration in Compressed Brushes
Leonid I. Klushin, Alexander M. Skvortsov, Shuanhu Qi, Torsten Kreer, Friederike Schmid
Macromolecules 52 (4), 1810-1820 (2019);

How ill-defined constituents produce well-defined nanoparticles: Effect of polymer dispersity on the uniformity of copolymeric micelles
Sriteja Mantha, Shuanhu Qi, Matthias Barz, Friederike Schmid
Physical Review Materials 3 (2), (2019);

Phase transitions in single macromolecules: Loop-stretch transition versus loop adsorption transition in end-grafted polymer chains
Shuangshuang Zhang, Shuanhu Qi, Leonid I. Klushin, Alexander M. Skvortsov, Dadong Yan, Friederike Schmid
The Journal of Chemical Physics 148 (4), 044903 (2018);

Tuning Transition Properties of Stimuli-Responsive Brushes by Polydispersity
Shuanhu Qi, Leonid I. Klushin, Alexander M. Skvortsov, Mingjie Liu, Jiajia Zhou, Friederike Schmid
Advanced Functional Materials, 1800745 (2018);

Dynamic Density Functional Theories for Inhomogeneous Polymer Systems Compared to Brownian Dynamics Simulations
Shuanhu Qi, Friederike Schmid
Macromolecules, (2017);

Hybrid particle-continuum simulations coupling Brownian dynamics and local dynamic density functional theory
Shuanhu Qi, Friederike Schmid
Soft Matter, (2017);

Simulating copolymeric nanoparticle assembly in the co-solvent method: How mixing rates control final particle sizes and morphologies
Simon Keßler, Klaus Drese, Friederike Schmid
Polymer 126, 9-18 (2017);

Self-Assembly of Polymeric Particles in Poiseuille Flow: A Hybrid Lattice Boltzmann/External Potential Dynamics Simulation Study
Johannes Heuser, G. J. Agur Sevink, Friederike Schmid
Macromolecules, (2017);

Combining cell-based hydrodynamics with hybrid particle-field simulations: efficient and realistic simulation of structuring dynamics
G. J. A. Sevink, F. Schmid, T. Kawakatsu, G. Milano
Soft Matter 13 (8), 1594-1623 (2017);

Numerical reduction of self-consistent field models of macromolecular systems
A. Disterhoft, T. Raasch, F. Schmid
Proc. Appl. Math. Mech. 16, 915-916 (2016);

A hybrid particle-continuum resolution method and its application to a homopolymer solution
S. Qi, H. Behringer, T. Raasch, F. Schmid
The European Physical Journal Special Topics 225 (8-9), 1527-1549 (2016);

Stimuli-Responsive Brushes with Active Minority Components: Monte Carlo Study and Analytical Theory
Shuanhu Qi, Leonid I. Klushin, Alexander M. Skvortsov, Alexey A. Polotsky, Friederike Schmid
Macromolecules 48 (11), 3775-3787 (2015);

Using field theory to construct hybrid particle–continuum simulation schemes with adaptive resolution for soft matter systems
Shuanhu Qi, Hans Behringer, Friederike Schmid
New Journal of Physics 15 (12), 125009 (2013);


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