Research Schmiedeberg - Theoretical Physics II: Soft Matter - Heinrich-Heine-Universität Düsseldorf

Emmy Noether Group Schmiedeberg

Emmy Noether
Junior Research Group

Structure and dynamics
of colloidal particles
on incommensurate substrates

Research Latest News People Teaching

Research Interests

Colloidal assembly on structured surfaces
Growth of crystals and quasicrystals on incommensurate substrates
Slowdown of the dynamics close to jamming in the vicinity of structured surfaces

How do incommensurability, aperiodicity and symmetry of a substrate influence the dynamics and structure of colloidal particles?

Research Highlights

Colloidal particles on quasicrystalline and other incommensurate substrates

Colloidal assemblies on quasicrystalline substrates
Matthias Sandbrink and Michael Schmiedeberg↗

Dynamics and the growth process of (quasi-)crystals on substrates
Aleksandar Mijailović↗ and Michael Schmiedeberg↗

Density functional theory of heteroneneous nucleation on incommensurate substrates
Andreas Härtel↗, Tim Neuhaus↗, Michael Schmiedeberg↗, and Hartmut Löwen↗ within the priority program SPP 1296 "Heterogeneous nucleation and microstructure formation"↗

Properties of phasonic drifts, displacements, jumps, and gradients
Michael Schmiedeberg↗ in cooperation with the group of Holger Stark↗ (Technische Universität Berlin) and with Johannes Roth↗ (Institut für Theoretische und Angewandte Physik, Universität Stuttgart)

Colloidal particles on square substrates
Elmar Effertz and Michael Schmiedeberg↗

other topics:
Existence of quasicrystals depending on the rotational symmetry
Monolayers of colloidal particles on quasicrystalline substrates
Single particle dynamics of a colloid on a quasicrystalline substrate
Michael Schmiedeberg↗ in cooperation with the group of Holger Stark↗ (Technische Universität Berlin), with Johannes Roth↗ (Institut für Theoretische und Angewandte Physik, Universität Stuttgart), and the group of Clemens Bechinger↗ (2. Physikalisches Institut, Universität Stuttgart)

Selected publications:
M. Schmiedeberg, J. Mikhael, S. Rausch, J. Roth, L. Helden, C. Bechinger, and H. Stark, Archimedean-like colloidal tilings on substrates with decagonal and tetradecagonal symmetry, Eur. Phys. J. E 32, 25 (2010).↗
J. Mikhael, M. Schmiedeberg, S. Rausch, J. Roth, H. Stark, and Clemens Bechinger, Proliferation of anomalous symmetries in colloidal monolayers subjected to quasiperiodic light fields, PNAS 107, 7214 (2010).↗
M. Schmiedeberg and H. Stark, Colloidal ordering on a 2D quasicrystalline substrate, Phys. Rev. Lett. 101, 218302 (2008).↗
M. Schmiedeberg, J. Roth, and H. Stark, Freezing and Melting of a Colloidal Adsorbate on a 1D Quasicystalline Substrate, Phys. Rev. Lett. 97, 158304 (2006).↗

Stability of intrinsic colloidal quasicrystals

funded by the Stategic Research Fund of the Heinrich-Heine Universität Düsseldorf

Glassy dynamics and jamming

Glassy dynamics close to structured surfaces
Michael Schmiedeberg↗

Slowdown of the dynamics of hard and soft spheres close to the jamming and glass transition
Michael Schmiedeberg↗ in cooperation with Andrea J. Liu↗ (University of Pennsylvania, Philadelphia, USA), Thomas K. Haxton↗ (Lawrance Berkeley National Laboratory, USA), and Sidney R. Nagel↗ (University of Chicago, USA)

Publications:
M. Schmiedeberg, T.K. Haxton, S.R. Nagel and A.J. Liu, Mapping the glassy dynamics of soft spheres onto hard-sphere behavior, Eur. Phys. Lett. 96, 36010 (2011).↗
Thomas K. Haxton, Michael Schmiedeberg, and Andrea J. Liu, Universal jamming phase diagram in the hard-sphere limit, Phys. Rev. E 83, 031503 (2011).↗

Anomalous Diffusion, Continuous-Time Random Walks, and motion on rough surfaces

Browian particle on a rough surface
Michael Schmiedeberg↗ in cooperation with the group of Stefan Egelhaaf↗ (Heinrich-Heine-Universität Düsseldorf) and with Hartmut Löwen↗ (Heinrich-Heine-Universität Düsseldorf)

Random Walks with random velocities and scaling behavior of Continuous-Time Random Walks
Michael Schmiedeberg↗ in cooperation with Vasily Yu. Zaburdaev↗ (Harvard University, Cambridge, USA) and Holger Stark↗ (Technische Universität Berlin)

Selected publications:
R.D.L. Hanes, C. Dalle-Ferrier, M. Schmiedeberg, M.C. Jenkins, and S.U. Egelhaaf, Colloids in one dimensional random energy landscapes, Soft Matter, DOI: 10.1039/C2SM07102A (2012).↗
M. Schmiedeberg, V. Yu. Zaburdaev, and H. Stark, On moments and scaling regimes in anomalous random walks, J. Stat. Mech. 2009, P12020 (2009).↗
V. Yu. Zaburdaev, M. Schmiedeberg, and H. Stark, Random Walks with random velocities, Phys. Rev. E 78, 011119 (2008).↗

Topics for a Master or a Bachelor thesis available

Please contact Michael Schmiedeberg↗: schmiedeberg<at>thphy.uni-duesseldorf.de
Open PhD or postdoc positions if available: see Latest News↗

Recent Publications (2010 or later)

M. Schmiedeberg and H. Stark, Comparing light-induced colloidal quasicrystals with different rotational symmetries, to be published in Journal of Physics: Condensed Matter.
R.D.L. Hanes, C. Dalle-Ferrier, M. Schmiedeberg, M.C. Jenkins, and S.U. Egelhaaf, Colloids in one dimensional random energy landscapes, Soft Matter, DOI: 10.1039/C2SM07102A (2012).↗
M. Schmiedeberg, T.K. Haxton, S.R. Nagel and A.J. Liu, Mapping the glassy dynamics of soft spheres onto hard-sphere behavior, Eur. Phys. Lett. 96, 36010 (2011).↗
C. Richter, M. Schmiedeberg, and H. Stark, A colloidal model system with tunable disorder: Solid-fluid transition and discontinuities in the limit of zero disorder, Eur. Phys. J. E 34, 107 (2011).↗
Thomas K. Haxton, Michael Schmiedeberg, and Andrea J. Liu, Universal jamming phase diagram in the hard-sphere limit, Phys. Rev. E 83, 031503 (2011).↗
M. Schmiedeberg, J. Mikhael, S. Rausch, J. Roth, L. Helden, C. Bechinger, and H. Stark, Archimedean-like colloidal tilings on substrates with decagonal and tetradecagonal symmetry, Eur. Phys. J. E 32, 25 (2010).↗
J. Mikhael, M. Schmiedeberg, S. Rausch, J. Roth, H. Stark, and C. Bechinger, Proliferation of anomalous symmetries in colloidal monolayers subjected to quasiperiodic light fields, PNAS 107, 7214 (2010).↗

For complete lists of publications (including older publications) see personal sites of the group members (e.g., publications of Michael Schmiedeberg↗).