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Multiscale Simulations of Polymer Dynamics
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# Multiscale Simulations of Polymer Dynamics

**Source**: https://www.tue.nl/en/research/research-groups/soft-matter-and-biological-physics/multiscale-simulations-of-polymer-dynamics
**Parent**: https://www.tue.nl/en/research/research-groups/soft-matter-and-biological-physics

Alexey Lyulin

# Multiscale Simulations of Polymer Dynamics

Dr. Alexey Lyulin performs Multiscale Simulations of Polymer Dynamics at the Soft Matter and Biological Physics research group

- [Researchers](#c279438)
- [Vacancies](#c279657)
- [Student Opportunities](#c279656)
- [Publications](#c279441)
- [Contact](#c279439)
- [External website](http://tps.phys.tue.nl/lyulin/research/)
- [CCER](https://www.ccer.nl/)

## Research Profile

The emphasis in Dr. Alexey Lyulin's research is on atomic-scale modeling of macromolecules, including glasses, dendrimers, polymer nanocomposites and thin polymer films. But the main focus is - of course - on polymer dynamics and mechanics. The fundamental insight generated by the multiscale computer simulations of Lyulin and his co-workers will help in developing new materials with improved ultimate properties. They apply their multi-scale computational approach for the study of glass transition and mechanical properties of amorphous polymers in a bulk and in thin films; Stability and toxicity of complexes of charged dendrimers and hyperbranched polymers with applications in linear polyelectrolytes and drugs for biomedical applications; Non-newtonian rheology of linear and hyperbranched polymers in hydrodynamic flows; and Microstructure and macromechanics of polymer nanocomposites. The Lyulin group aims at developing a long-standing research program in Eindhoven for multi-scale computer simulations (from macro scale to nanoscale, in time and space) of polymer dynamics and mechanics.

[Read more](#)

## Rational Design of Biocompatible Materials Based on Chemically Modified Cellulose

The ultimate goal of this project is the creation and development of a rational design protocol for bionanocomposite materials based on chemically modified cellulose. This involves: i) development of a predictive integrated multiscale simulation protocol for the design of such materials, ii) verifying its foundations against analytical theory and experimental studies, and iii) collaboration with the Institute of Macromolecular Compounds (IMC) of Russian Academy of Sciences (RAS) which implements the computer-aided new design platform. This integrated approach provides a novel, innovative, and scalable platform for optimization and development of biodegradable and biocompatible polymer materials with chemically-modified surfaces, in particular bionanocomposites, for high-tech ecologically safe industrial and biomedical applications.

## Meet some of our Researchers

[Associate Professor

### Alexey Lyulin](https://www.tue.nl/en/research/researchers/alexey-lyulin)

- [See all our researchers](https://research.tue.nl/en/organisations/multiscale-simulations-of-polymer-dynamics/persons/)

## Going Glassy: Revealing Structure and Dynamics of Glassy Polymer Films

The confinement effects on both structural and dynamical aspects of polymer glasses are tremendous when the confinement size is comparable to the chain dimensions. We simulate, also under the shear deformation [**(movie),**](http://www.youtube.com/watch?v=etwTpmB_46o) the film thickness dependence of the average glass transition temperature in very thin (few nm !) polymer films. We try to understand the effect of confinement on the structure, segmental mobility and mechanical properties of different polymers and nanocomposites. We map the nanoscale simulated polymer dynamics to experiments which use cyclic (on the scale of seconds!) shear deformation. Here is another [**YouTube**](http://www.youtube.com/watch?v=Obnj_3LhZhw) movie for you! And **[here is the link](http://tps.phys.tue.nl/lyulin/wp-content/uploads/sites/4/2017/02/jcp-special-topic-thin-films.pdf)**to the J. Chem. Phys. special issue on thin polymer films with our contribution.

## News

[February 26, 2020

Nanofiller-enhanced wax could be sustainable alternative for heat storage

Wax+ project led by Alexey Lyulin receives funding of over 800.000 euros.

Read more](https://www.tue.nl/en/news/news-overview/26-02-2020-nanofiller-enhanced-wax-could-be-sustainable-alternative-for-heat-storage)

## Predicting Morphologies of Solar Cells

We contribute to a fully predictive multiphysics computational approach to the functioning of Organic Photovoltaic Cells (OPVC). This requires completing the knowledge about the functioning of OPVCs by obtaining a detailed understanding of the atomic-scale morphology and electronic processes at the Donor-Acceptor interface and linking this to larger scales. An important idea is that, next to the pure polymer and fullerene phases, there is a finely intermixed polymer/fullerene phase – called the **mixed phase**–  that is essential for efficient functioning of the OPVC . It is thought that in this mixed phase polymer chains connected to the polymer crystallites penetrate the fullerene network; see Figure on the left. Excitons created by light in the pure polymer phase diffuse to the mixed phase, where they have a somewhat lower energy, and then separate into free charges. The polymer chains that stick out into the fullerene network are supposed to quickly transfer the holes along their backbone to the crystalline polymer phase, where they delocalize, while the electrons move into the pure fullerene phase by the good electronic contact between the fullerenes. By the unique combination of a morphological and electronic-structure study we are able to create breakthroughs in the understanding of the charge-separation process. Such study is unique in its character and critical in completing the knowledge chain of the functioning of OPVCs. We give answers to the many questions around the ‘hot-exciton’ and ‘mixed-phase’ ideas by providing unbiased explicit calculations.

## Work with us!

### Open positions

[PhD Position](http://tps.phys.tue.nl/lyulin/wp-content/uploads/sites/4/2019/12/PhD-Position_advertisement_DPI.pdf): Molecular modelling of stretch-induced crystallization in polyethylene and polypropylene layers

[PhD Position:](http://tps.phys.tue.nl/lyulin/wp-content/uploads/sites/4/2017/03/PhD-Position_advertisement_STW-1.pdf) Wax+– Nanofiller-enhanced wax for heat storage

## Ion Permeability in Metal-Free Flow Batteries by Multiphysics Modelling

Large scale energy storage is necessary and urgently needed in stable grid management (as load leveling and peak shaving), and for the integration of renewable energy sources. The redox **flow battery** (FB) provides a unique combination of high efficiency and long cycle life. The key FB components are redox pairs (usually vanadium ions), electrodes and a separating polymer membrane to prevent the electrolytes to cross mix and to transfer ions. High-quality, low-cost materials are vital to achieve large-scale acceptable FBs; ion chemistry and transport are the key factors in determining the final FB performance. We use multiscale simulations to provide fundamental physical insights into the ion transport in **novel, metal free, organic-inorganic aqueous FB**. Our atomistic non-equilibrium molecular-dynamics simulations deliver polymer/electrolyte/electrode interfaces and local diffusivities for large-scale Lattice-Boltzmann simulations of permeabilities and transport in **porous media.**Our project may lead to a substantial cost reduction and increased efficiency of FB by advising experiments with improved membranes and optimized electrode geometry.

## Student Opportunities

**MSc project:** [**Molecular dynamics simulations on polymeric vesicles**](http://tps.phys.tue.nl/lyulin/wp-content/uploads/sites/4/2017/03/MasterStudent_ExclResearchQuestions.pdf)

We always have a number of other very exciting opportunities for Master and Bachelor students. Also, we can help you identify possibilities for internships abroad, including Stanford University and San Diego State University. Possible research projects, to name but a few:

- [morphologies of organic solar cells](http://tps.phys.tue.nl/lyulin/wp-content/uploads/sites/4/2017/03/Charge_separation1.pdf)
- [upscalled modelling of proton-exchange membranes for flow batteries](http://tps.phys.tue.nl/lyulin/wp-content/uploads/sites/4/2017/03/flow_batteries.pdf)
- [understanding the glass transition in polymer thin films](https://publishing.aip.org/publishing/journal-highlights/going-glassy-revealing-structure-and-dynamics-glassy-polymers-during)
- [mechanics and segmental dynamics in polymer nanocomposites](http://tps.phys.tue.nl/lyulin/wp-content/uploads/sites/4/2017/03/composites.pdf)
- novel phase-change and thermo-chemical materials for thermal energy storage

The courses offered within the group are:

- [3FFX0](https://osiris.tue.nl/osiris_student_tueprd/OnderwijsCatalogusSelect.do?selectie=cursus&collegejaar=2016&cursus=3FFX0&taal=en)     Statistical physics (Mede-docent)
- [3FMX0](https://osiris.tue.nl/osiris_student_tueprd/OnderwijsCatalogusSelect.do?selectie=cursus&collegejaar=2016&cursus=3FMX0&taal=en)    Physical modelling and simulating (Mede-docent)
- [3MA010](https://osiris.tue.nl/osiris_student_tueprd/OnderwijsCatalogusSelect.do?selectie=cursus&collegejaar=2016&cursus=3MA010&taal=en) Computational and mathematical physics (Verantw. Docent)
- [3MN100](https://osiris.tue.nl/osiris_student_tueprd/OnderwijsCatalogusSelect.do?selectie=cursus&collegejaar=2016&cursus=3MN100&taal=en) Polymer physics (Mede-docent)
- [3MN200](https://osiris.tue.nl/osiris_student_tueprd/OnderwijsCatalogusSelect.do?selectie=cursus&collegejaar=2016&cursus=3MN200&taal=en) Computational Materials Science (Mede-docent)
- [3NAB0](https://osiris.tue.nl/osiris_student_tueprd/OnderwijsCatalogusSelect.do?selectie=cursus&collegejaar=2016&cursus=3NAB0&taal=en)    Applied Physical Sciences conceptual (Instructeur)
- [3MT120](https://osiris.tue.nl/osiris_student_tueprd/OnderwijsCatalogusSelect.do?selectie=cursus&collegejaar=2017&cursus=3MT120&taal=en)  Advanced Computational Fluid and Plasma Dynamics (Mede-docent)

## Recent Publications

- [See all publications](https://research.tue.nl/en/organisations/multiscale-simulations-of-polymer-dynamics/publications/)

Our most recent peer reviewed publications

- [### Heat transfer dynamics in graphene-coated paraffin spheres for enhanced thermal transport

  International Journal of Heat and Mass Transfer

  (2026)

  Kevin A. Redosado Leon,Alexey Lyulin,Bernard J. Geurts](https://research.tue.nl/nl/publications/1bab838f-8325-4410-adc7-12416bf5813a)
- [### Embedded Many-Body Green's Function Methods for Electronic Excitations in Complex Molecular Systems

  Wiley Interdisciplinary Reviews: Computational Molecular Science

  (2024)

  Gianluca Tirimbó,Vivek Sundaram,Björn Baumeier](https://research.tue.nl/nl/publications/bb73b736-3edc-4e41-b6c5-84ae6dc2ec81)
- [### VOTCA: multiscale frameworks for quantum and classical simulations in soft matter

  Journal of Open Source Software

  (2024)

  Björn Baumeier,Jens Wehner,Nicolas Renaud,Felipe Zapata Ruiz,Rene Halver,Pranav Madhikar,Ruben Gerritsen,Gianluca Tirimbo,David Rosenberger,Joshua S. Brown](https://research.tue.nl/nl/publications/b31b19b1-3d9e-44e4-b173-d023370b40cc)
- [### Quantum-Quantum and Quantum-Quantum-Classical Schemes for Near-Gap Excitations with Projection-Based-Embedded GW-Bethe-Salpeter Equation

  Journal of Chemical Theory and Computation

  (2024)

  Vivek Sundaram,Björn Baumeier](https://research.tue.nl/nl/publications/30a48b2c-82e0-4ef4-b528-94dba9e62b5f)
- [### Reducing Kapitza resistance of graphene–paraffin interfaces by alkyl functionalisation

  Chemical Physics Letters

  (2024)

  M.W. Boomstra,Bernard J. Geurts,Alexey Lyulin](https://research.tue.nl/nl/publications/a220853c-7a0f-4d81-8cc5-e755d349e56b)

## Understanding the visco-elasticity of elastomer-based nanocomposites

The project aims to study, using computer modelling, the mechanical properties of elastomer-based nanocomposites for the applications in the automotive industry (production of car tires, Michelin) and as sealants (SKF). Usually, in these materials inorganic nanoparticles (Carbon Black, silica), commonly referred to as fillers, are added to rubber in order to increase its rigidity at low strain magnitudes. Nonlinear phenomena restrain the performance of the resulting composites and the development of possible new applications. The goal of the project is to connect the viscoelastic properties of the elastomer-based composites with their microstructure, and the microstructure with the adhesion polymer-filler interactions at the segmental scale. Control of these interactions will lead to the design of new materials with tailored specific mechanical properties. We investigate, using fully-atomistic and coarse-grained molecular-dynamics computer simulations, the equilibrium structure and the dynamics of the composite constituent parts, as well as their mechanical properties under the influence of the oscillatory shear, on different scales.

## Contact

- ### Postal address

  Department of Applied Physics

  P.O. Box 513

  5600 MB
  Eindhoven

  Netherlands
- ### Postal address

  Department of Applied Physics

  P.O. Box 513

  5600 MB
  Eindhoven

  Netherlands
- ### Visiting address

  Flux, room 5.096

  Groene Loper

  5612 AP
  Eindhoven

  Netherlands

  [+31 (0)40 247 4253](tel:+310402474253)
- ### Visiting address

  Flux, room 5.096

  Groene Loper

  5612 AP
  Eindhoven

  Netherlands

  [+31 (0)40 247 4253](tel:+310402474253)
- ### 

  Teamlead

  [a.v.lyulin@tue.nl](#)