Rudolf Weeber

Rudolf Weeber
Postdoc

Office:	1.092
Phone:	+49 711 685-67717
Fax:	+49 711 685-63658
Email:	Rudolf.Weeber _at_ icp.uni-stuttgart.de
Address:	Rudolf Weeber Institute for Computational Physics Universität Stuttgart Allmandring 3 70569 Stuttgart Germany

Currently, my work is focussed on magnetic gels and elastomers. They are soft elastic materials, into which magnetic particles are embedded. Through the interplay of the elasticity of the matrix and the magnetic properties of the particles, the sample's shape and elasticity can be controlled by means of external magnetic fields. Predicting this behaviour accurately is, however, rather difficult, as, typically several effects are at work at the same time. We approach the topic using computer simulations, as they allow for precise control of individual aspects of the models, and we can study the relevant mechanisms separate from each other.

I am also involved in work on nanoparticles in a flow and micro-rheology, in particular, the irreversible agglomeration of soot particles in turbulent flow as well as the study of local jamming effects in optical tweezer experiments.

I am interested in the development of simulation software and am a contributor to the ESPResSo molecular dynamics package.

Publications

• Rudolf Weeber, Sofia Kantorovich, Christian Holm.
  Ferrogels cross-linked by magnetic particles: Field-driven deformation and elasticity studied using computer simulations.
  The Journal of Chemical Physics 143(15):154901, 2015.
  [PDF] (3.4 MB) [DOI]
• Giorgio Pessot, Rudolf Weeber, Christian Holm, Hartmut Löwen, Andreas M. Menzel.
  Towards a scale-bridging description of ferrogels and magnetic elastomers.
  Journal of Physics: Condensed Matter 27(32):325105, 2015.
  [PDF] (1.9 MB) [DOI]
• Rudolf Weeber, Sofia Kantorovich, Christian Holm.
  Ferrogels cross-linked by magnetic nanoparticles – Deformation mechanisms in two and three dimensions studied by means of computer simulations.
  Journal of Magnetism and Magnetic Materials 383:262–266, 2015.
  [PDF] (2.5 MB) [DOI]
• Rudolf Weeber.
  Simulation of novel magnetic materials in the field of soft matter.
  PhD thesis, University Stuttgart, 2014.
  [PDF] (105 MB)
• G. Inci, A. Arnold, A. Kronenburg, R. Weeber.
  Modeling Nanoparticle Agglomeration using Local Interactions.
  Aerosol Science and Technology 48(8):842–852, 2014.
  [PDF] (741 KB) [DOI]
• Rudolf Weeber, Marco Klinkigt, Sofia Kantorovich, Christian Holm.
  Microstructure and magnetic properties of magnetic fluids consisting of shifted dipole particles under the influence of an external magnetic field.
  The Journal of Chemical Physics 139(21):214901, 2013.
  [PDF] (1.9 MB) [DOI]
• Marco Klinkigt, Rudolf Weeber, Sofia Kantorovich, Christian Holm.
  Cluster formation in systems of shifted-dipole particles.
  Soft Matter 9(13):3535–3546, 2013.
  [PDF] (893 KB) [DOI]
• R. Weeber, J. Harting.
  Hydrodynamic interactions in active colloidal crystal microrheology.
  Physical Review E 86(5):057302, 2012.
  [PDF] (281 KB) [DOI]
• Rudolf Weeber, Sofia Kantorovich, Christian Holm.
  Deformation mechanisms in 2D magnetic gels studied by computer simulations.
  Soft Matter 8(38):9923–9932, 2012.
  [PDF] (1.7 MB) [DOI]
• Sven Bachthaler, Filip Sadlo, Rudolf Weeber, Sofia Kantorovich, Christian Holm, Daniel Weiskopf.
  Magnetic Flux Topology of 2D Point Dipoles.
  Computer Graphics Forum 31(3, Part 1):955–964, 2012.
  [PDF] (2.1 MB) [DOI]
• Marco Klinkigt, Rudolf Weeber, Sofia Kantorovich, Christian Holm.
  System of particles with shifted magnetic dipoles.
  Magnetohydrodynamics 47(2):143–148, 2011.
  [PDF] (400 KB) [URL]
• Sofia Kantorovich, Rudolf Weeber, Juan J. Cerdà, Christian Holm.
  Magnetic particles with shifted dipoles.
  JMMM 323(10):1269–1272, 2011.
  [PDF] (401 KB) [DOI]
• Sofia Kantorovich, Rudolf Weeber, Juan J. Cerdà, Christian Holm.
  Ferrofluids with shifted dipoles: ground state structures.
  Soft Matter 7(11):5217–5227, 2011.
  [PDF] (518 KB) [DOI]
• C. Gutsche, M. M. Elmahdy, K. Kegler, I. Semenov, T. Stangner, O. Otto, O. Ueberschär, U. F. Keyser, M. Krueger, M. Rauscher, R. Weeber, J. Harting, Y. W. Kim, V. Lobaskin, R. R. Netz, F. Kremer.
  Micro-rheology on (polymer-grafted) colloids using optical tweezers.
  Journal of Physics: Condensed Matter 23:184114, 2011.
  [PDF] (1.5 MB) [DOI]
• Christof Gutsche, Friedrich Kremer, Matthias Krüger, Markus Rauscher, Rudolf Weeber, Jens Harting.
  Colloids dragged through a polymer solution: experiment, theory and simulation.
  The Journal of Chemical Physics 129(8):084902, 2008.
  [PDF] (786 KB) [Preprint] [DOI]
• Rudolf Weeber.
  Dynamic Simulations Of Colloids And Their Interactions.
  Master's thesis, University of Stuttgart, 2008.
  

CV

• 2000: Abitur with majors in politics and physics
• 2000 - 2008: Studies of physics at the University of Stuttgart

Specializations: Simulation methods, electronic structure of condensed matter

Diplomarbeit: "Dynamical simulation of colloids and their interactions" concerning local jamming effects in optical tweezer experiments.

Advisor: J. Harting

• 2008: Research assistant at the Insitute for Computational Physics, University of Stuttgart

 Work on fluid-particle coupling schemes in SRD/MD simulations

• 2008: Intern at the German Aerospace Center in the Department of Systems Analysis and Technology Assessment

 Agent-based simulations on the market integration of renewable energies

• 2008 - 2009: Researcher in the same group
• 2009 - 2015: Doctoral researcher at the Institute for Computational Physics and in the graduate school of the Stuttgart Research Center for Simulation Technology, University of Stuttgart

 Thesis: "Simulation of novel soft magnetic materials"
 Advisor: C. Holm

• since 2015: Postdoc in the same group

 Work on magnetic gels and elastomers