000280513 001__ 280513
000280513 005__ 20240619083522.0
000280513 037__ $$aFZJ-2016-00281
000280513 041__ $$aEnglish
000280513 1001_ $$0P:(DE-Juel1)159317$$aBriels, Willem$$b0$$eCorresponding author$$ufzj
000280513 1112_ $$aWorkshop on Self-Assembly in Soft Matter$$cPatras$$d2015-09-01 - 2015-09-02$$wGreece
000280513 245__ $$aMesoscopic modelling of flowing complex matter, memory and Galilean invariant Brownian Dynamics
000280513 260__ $$c2015
000280513 3367_ $$0PUB:(DE-HGF)31$$2PUB:(DE-HGF)$$aTalk (non-conference)$$btalk$$mtalk$$s1459768497_5275$$xInvited
000280513 3367_ $$033$$2EndNote$$aConference Paper
000280513 3367_ $$2DataCite$$aOther
000280513 3367_ $$2DINI$$aOther
000280513 3367_ $$2BibTeX$$aINPROCEEDINGS
000280513 3367_ $$2ORCID$$aLECTURE_SPEECH
000280513 520__ $$aComplex soft matter usually consists of large molecules with extremely many degrees of freedom. In this talk we are especially interested in molecules which interact with many neighboring particles, typically in the order of a few hundreds. Typical examples are star polymers whose arms mix with those of neighboring stars, or even entangle with them in the rheological sense when they are sufficiently long. Other example are systems of tri-block-copolymers of which the middle block is solvophillic and the two outer blocks are solvophobic. Such polymers will arrange their solvophobic parts into micelles, with the solvophillic inner blocks dangling around them. At high concentrations the solvophilic middle blocks may form bridges from one micelle to another, thereby forming transient networks.When set into shearing motion, particles will displace with respect to each other, and their internal structure will be disrupted. The typical time scale for rupture and re-establishing of this structure will give rise to long time processes strongly interacting with the externally imposed motion. These long time processes may of course be studied by models including all the relevant small scale information of the molecules. When coarse graining the molecules this possibility gets lost and the long time processes must be introduced as memory into the dynamics of the coarse objects. In this presentation I will present a way to do this, which is still computationally efficient. After presenting the general concept and some examples, I will address shortcomings of the present implementation of the model and suggest possible ways to solve the problems.In the last part of the presentation I will present a way to generalize Brownian Dynamics to a Galilei invariant simulation scheme. As is well known this can be done by adding to the displacements of the particles  affine contributions due to the average flow in the neighborhoods of the particles. The challenge is to devise a model to calculate these average flows as they develop in response to the perturbations at the boundaries of the system. I will demonstrate how this can be done and pay attention to differences between this method and the traditional Brownian Dynamics codes. In particular in strongly sheared systems the traditional Brownian Dynamics method doesn’t seem very realistic.
000280513 536__ $$0G:(DE-HGF)POF3-551$$a551 - Functional Macromolecules and Complexes (POF3-551)$$cPOF3-551$$fPOF III$$x0
000280513 909CO $$ooai:juser.fz-juelich.de:280513$$pVDB
000280513 915__ $$0StatID:(DE-HGF)0550$$2StatID$$aNo Authors Fulltext
000280513 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)159317$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000280513 9131_ $$0G:(DE-HGF)POF3-551$$1G:(DE-HGF)POF3-550$$2G:(DE-HGF)POF3-500$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bKey Technologies$$lBioSoft – Fundamentals for future Technologies in the fields of Soft Matter and Life Sciences$$vFunctional Macromolecules and Complexes$$x0
000280513 9141_ $$y2016
000280513 920__ $$lyes
000280513 9201_ $$0I:(DE-Juel1)ICS-3-20110106$$kICS-3$$lWeiche Materie$$x0
000280513 980__ $$atalk
000280513 980__ $$aVDB
000280513 980__ $$aUNRESTRICTED
000280513 980__ $$aI:(DE-Juel1)ICS-3-20110106