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Introduction: Soft Matter Research
The
main research topic of the Institute is the theory of "complex fluids"
and "soft matter" systems. Soft matter physics is an interdisciplinary
research area encompasing statistical physics, material science,
chemistry, and biology. The systems are characterized by
- Supramolecular
structure and self-assembly
- Typical
length scales ranging from nano- to micro-meters
- Typical
energy scales comparable to the thermal energy kBT.
Classical
examples of complex fluids are
- Polymer
solutions, mixtures, and melts
-
Mixtures of block copolymers and homopolymers
- Lyotropic
liquid crystals
-
Amphiphilic systems, i.e. mixtures of oil, water and amphiphiles
-
Colloidal suspensions.
While
these areas remain active fields of research, the focus has recently
shifted to more complex systems which are obtained by combining
two or more of the components listed above. A few examples are
- Colloidal
particles in polymer solutions
- Mixtures
of surfactants and amphiphilic block-copolymers
- Mixtures
of several surfactants or lipids
- Colloids
in liquid crystals
This
brings the systems which are studied in physics closer to applications
in material science or biology.
Since
the structures in soft matter systems often contain a large numer
of molecules, mesoscale modelling is typically required to
bridge the length- and time-scale gap between the microscopic domain
- of atoms and their interactions - and the emerging properties
of supramolecular assemblies on meso- or macroscopic scales. Microscopic
models are employed to study properties of complex systems on the
molecular scale, and to provide a link of mesoscale models to molecular
architecture.
A
large variety of methods is used to study soft matter systems. In
fact, a combination of analytical and numerical methods is often
needed to successfully characterize these complex systems. In particular,
simulation methods (Monte Carlo, molecular dynamics), computational
hydrodynamics, field theory, perturbation theory, and exact solutions
are employed in our institute.
A
characteristic feature of soft-matter research is the fruitful interaction
between theory and experiment. With a third of the IFF institutes
[Neutron Scattering (Richter), Theory II and Soft Matter (Dhont)]
now focusing on soft matter research, many of the essential aspects
of these systems are investigated here.
Research
projects and results:
(in
alphabetic order)
- Mesoscopic
solvent simulations: Multi-particle-collision dynamics of three-dimensional
flows:
Due
to the large length- and time-scale gap, in simulations of complex-fluid
flow the solvent often has to be modeled by a mesoscopic model.
We apply a recently developed mesoscale simulation technique,
multi-particle-collision dynamics (MPCD), to three dimensional
solvent flows in a channel with and without a spherical obstacle.
The advantage of a gravitationally-driven flow of the solvent
over the flow induced by a pressure gradient in the calculation
of the solvent viscosity is demonstrated. Three different algorithms
for stochastic collision step are investigated and compared. Our
simulation results for the recirculation length of stationary
vortices behind a spherical obstacle as a function of the Reynolds
number are in good agreement with previous experimental measurements.
(E. Allahyarov, G. Gompper)
- Cell
Motility and Migration:
The
motility and locomotion of biological cells is based on signal-mediated
polymerization of their cytoskeletons. It has been shown recently
by researchers from the institute how the the random motion and
the chemotaxis of a cell can be explained based on a model of
the autocatalytic polymerization kinetics of the cytoskeletal
actin network. The current work is mainly concerned with investigations
how the chemotaxis is induced by a complex signaling network of
actin-regulating proteins inside the cell. These studies are aimed
to explain the specific migration patterns of cells found, e.g.,
during embryogenesis. Most of the studies use computer simulations,
but also mathematical models are employed. (A.Baumgartner, S.Satyanarayana,
B.Nandy)
- Molecular
Signal Transduction across Biomembranes:
The
transduction of signals across the membranes of cells and organelles
is an important feature of all living organisms. Important examples
are the proton transport in protein pumps, as bacteriorhodopsin
(bR), and the permeation of ions through ion channels. Our recent
work was mainly concerned with molecular dynamics (MD) simulations
of all-atom models of bR and the KcsA potassium channel. In the
case of bR we used as the template structure the one obtained
at the institute IBI-2, the structure of the KcsA channel was
obtained from the protein data bank. Important information were
obtained concerning the distribution of water inside bR, which
constitute pathways for proton conduction. The actual proton transfer,
concomitant to a sequence of conformational transitions of bR,
is the current challenging topic of MD studies. In the case of
the KcsA channel, a certain type of steered MD simulation method
helped to clarify the "supplanting" process of ions while passing
the selectivity filter. The aim of the current investigations
is the simulation of the complete channel, including the N- and
C-terminii, which are not resolved in crystallographic experiments.
These parts of the protein are essential in order to understand
the gating of the ion channel. (A.Baumgartner, K. Votyakov, S.Grudinin,
J.-F.Gwan)
- Polymer
depletion interaction between an anisotropic colloidal particle
and a wall:
We
investigate the interaction between a colloidal particle of ellipsoidal
shape and a wall which is induced by long flexible and nonadsorbing
polymer chains. Besides a force the interaction provides a torque
on the particle. We concentrate on the case in which the particle
size is much smaller than typical polymer lengths such as the
radius of gyration Rs and in which a rigid polymer approximation
of the Asakura-Oosawa type cannot be applied. Our explicit analytical
results for ideal polymers show that for particle-wall distances
z large compared to Rs an orientation of the ellipsoid perpendicular
to the wall is favored while the parallel orientation
is favored for z small compared to 1Z,, (but z still large compared
to the particle size). (E. Eisenriegler, A. Bringer, R. Maassen)
- The
Freezing Transition of Flexible Membranes:
The
freezing transition of flexible, tensionless membranes fluctuating
about a planar reference state is investigated by Monte Carlo
simulations and scaling arguments. Out-of-plane fluctuations are
expected to reduce the free energy of dislocations sufficiently
to make the crystalline phase unstable for any finite temperature.
To study the hexatic-to-fluid transition, the bond-orientational
order-parameter susceptibility is analyzed for different values
of the bending rigidity n. It is found that for sufficiently large
is the low temperature hexatic phase melts via a universal Kosterlitz-Thouless
transition. These results are consistent with recent theoretical
predictions that the crumpled-to-crinkled transition occurs via
disclination melting for all bending rigidities. However, our
simulations provide evidence that the transition becomes first
order at very low bending rigidity. (G. Gompper, D.M. Kroll)
- Giant
Hexagonal Superstructures in Diblock Copolymer Membranes:
Amphiphilic
diblock copolymers can form bilayer vesicles (polymersomes), just
as the vesicles made from lipid molecules (liposomes). While previous
experiments show vesicles of spherical topology, we have observed
for the first time polymersomes of high genus, with their vesicle
wall organized on the micrometer scale either in a double bilayer
connected by a lattice of passages, or a tubular network with
hexagonal symmetry. Experimentally found shape classes are identified
within a theoretical phase diagram based on the bending energy
of the polymer membrane. Pronounced morphological changes could
be induced and controlled by temperature. (C.K. Haluska, W.T.
Goidi, H.-G. Dobereiner, S. Forster, G. Gompper)
- Free
energy cost to immerse a colloidal particle in a dilute or semidilute
polymer solution:
The
free energy cost F of immersing a spherical colloidal particle
in a solution of nonadsorbing polymers depends in a crucial way
on the particle to polymer size ratio and the degree of interchain
overlap. We use an approximate renormalization method to describe
the crossovers between the known limits of large and small spheres
in dilute and semidilute polymer solutions and to predict F
for arbitrary values of the size ratio and interchain overlap.
Our results are free from adjustable parameters and compare well
with simulation data both for the overlap-dependence of the polymer-induced
surface tension of a large particle and for the size ratio dependence
of F at a fixed overlap value in between the dilute and
semidilute limits. (R. Maassen, E. Eisenriegler)
- Criterion
for phase separation in one-dimensional driven systems:
We
found a criterion for the existence of phase separation in driven
density-conserving one-dimensional systems which suggests that
phase separation is related to the size dependence of the steady-state
currents of domains in the system. A quantitative criterion for
the existence of phase separation is conjectured using a correspondence
made between driven diffusive models and zero-range processes.
The criterion is verified in all cases where analytical results
are available, and predictions for other models are provided.
(G.M. Schutz, Y. Kafri, E. Levine, D. Mukamel, J. Torok)
- The
distribution function of a semiflexible polymer and random walks
with constraints:
We
have studied the end-to-end distribution function G(r, N) of
a worm-like chain. Using the propagator method we established
that the combinatorial problem of counting the paths contributing
to G(r, N) is equivalent to the problem of random walks
with constraints. Utilizing this mapping we derived (i) an exact
expression of the Fourier-Laplace transform of the distribution
function, G(k, p), as an inverse of an infinite rank matrix
and (ii) a recursion relation permitting to compute G(k, p)
directly. The moments < r 2n >
of G(r, N) can be calculated exactly by calculating the
(1,1)-matrix element of the 2n-th power of a truncated matrix
of rank n + 1. (G.M. Schutz, S. Stepanow)
- Shocks
and excitation dynamics in a driven diffusive two-component system:
We have considered classical hard-core particles hopping stochastically
on two parallel chains with an inter- and intea-chain interaction.
From microscopical considerations we derived the collective velocities
and shock stability conditions. The findings are confirmed by
comparison to Monte Carlo data of a multi-parameter class of driven
two-lane models. We also derived the hydrodynamic limit and clarified
analogies of our results with those known in the theory of partial
differential equations. The singularity problem is discussed and
a dissipative term that selects the physical solution is identified.
(G.M. Schütz, V.Popkov)
- Kinetics
of depletion interactions:
Depletion
interactions between colloidal particles dispersed in a fluid
medium are effective interactions induced by the presence of other
types of colloid and give rise to interesting equilibrium and
nonequilibrium phase behaviour. These interactions are not instantaneous
but build up in time through a diffusive collision process between
the two species. We show by means of Brownian dynamics simulations
that the fluctuations in the depletion force between two guest
particles in a host dispersion of differently sized colloids do
not decay exponentially with time, but show a power-law dependence.
A
simple scaling theory accurately describes the dependence of the
magnitude of these fluctuations on time. The consequences in particular
for the dynamics of colloidal mixtures are discussed. (G. Vliegenthart,
P. van der Schoot)
- Universal
scaling behavior of directed percolation and the pair contact
process in an external field:
Models which show a continuous phase transition from an active
state (density of active particles p larger zero) to a unique
absorbing state (p = 0) belong to the universality class of
directed percolation (DP). We compare the scaling behavior in
an external field of one such model, i.e. directed site percolation,
to that of the pair contact process (PCP), which has infinitely
many absorbing states. The external field is conjugated to
the order parameter and is realized as a spontaneous creation
of particles. We determine numerically the equation of state in
1+1 dimensions for both models by extensive Monte Carlo simulations
and show that both models are characterized by the same universal
scaling function. This universality has also be derived analytically
within the mean-field approach. (R.D. Willmann, S. Ldbeck)
- Dynamics
of linear and ring alkane molecules in a melt:
The
conformational and dynamical properties of linear and ring alkane
molecules in a melt are studied by molecular dynamics simulations
and analytical theory. Using a semiflexible chain model, the equilibrium
properties can consistently be described for all chain lengths.
Moreover, the dynamics is partially captured by the semiflexible
chain dynamics. In particular, the mean square displacement of
the longest chains exhibits deviations from the analytical result
indicating the onset of entanglement effects. The calculation
of the chain length dependence of the diffusion coefficient yields
an dependence close to D - N-2, characteristic
for reptation dynamics. This suggests the presence of a mechanism
which slows down the dynamics before entanglements are relevant.
The comparison of the dynamics of the ring alkanes with the linear
molecules displays a faster internal dynamics for the rings, consistent
with analytical results. (R.G. Winkler, D.Y. Yoon, K. Hur)
- Conformational
properties of weakly charged polyelectrolyte chains:
The
conformational properties of weakly charged polyelectrolyte chain
have been studied by a perturbation scheme. The persistence length
of a semiflexible reference chain is determined in such a manner
that the mean square end-to-end distances of the reference chain
and the charged chain agree with each other. To take into account
screening effects by added salt and counterions, the charge interactions
among the individual monomers of a chain are described by a Debye-Hiickel
potential. Considering the scaling behavior of the mean square
end-to-end distance with respect to chain length, we obtain a
transition from a rodlike behavior to an excluded volume type
dependence with increasing chain length. For very short screening
lengths, chain monomers experience short range interactions only.
No Gaussian regime is observed between the rodlike and the excluded
volume regime, which contradicts resent scaling considerations
but is in agreement with computer simulation results. (R.G. Winkler)
Some
Remarks:
- A
workshop Biology meets Physics was organized by G. Gompper
(Theory II) on February 20, 2002, to bring together the institutes
of the Forschungszentrum Jülich, which are interested in
research at the boundary between biology and physics. Speakers
from 12 institutes (IFF-NS, IFF-WM, IFF-T2, NIC, ISG-2, ISG-4,
IBI-1, IBI-2, ICG-III, ICG-IV, IBT-1, IME) presented their work.
- An
international one-day symposium on Cooperativity in Biophysical
Systems was organized by G. Schutz (Theory II), P. Grassberger
(Neumann Institute for Computing, FZJ) and E. Frey (HahnMeitner-Institut,
Berlin) on October 7, 2002. Seven invited speakers gave introductory
lectures as well as more specialized talks about their current
research. Eight of the about 45 participants also contributed
posters.
- An
international workshop, the Jülich Soft Matter Days 2002,
was organized by J. Dhont (IFF Soft Matter), G. Gompper (Theory
II) and D. Richter (IFF Neutron Scattering) at the Congresscentrum
Rolduc in Kerkrade (NL) on Nov. 19-22, 2002. The program consisted
of 4 plenary talks, 21 invited talks, 10 contributed talks, and
about 90 posters. The workshop was attended by 175 participants.
- The
paper of S. Lubeck and R. Willmann about Exact Hurst exponent
and crossover behavior in a limit order market model, which
was published in the November issue of J. Phys. A, has
been chosen by IOP Select as one of the most significant
articles in IOP journals in its December issue.
Awards
etc.:
- J.
Allgaier (IFF Neutron Scattering), G. Gompper (Theory II), D.
Richter (IFF Neutron Scattering), T. Sottmann (University of Cologne)
and R. Strey (University of Cologne) have received the ErwinSchr6dinger
award for interdisciplinary research of the Stifterverband der
Deutschen Wissenschaften and the Helmholtz Society.
- Dr.
Tamotsu Kohyama (Department of Physics, Faculty of Education,
Shiga University, Japan) has received a fellowship of the Japanese
Ministry of Education, Science and Culture to visit the Institute
Theory II for 10 months (March-December 2002).
- Richard
Willmann has received a Minerva fellowship to visit the Weizmann-Institut
(Rehovot, Israel) for 6 months (March-August 2002)
- Matthias
Paessens has received a DAAD fellowship to visit the University
of Nancy (France) for four months (May-August 2002)
Gerhard Gompper
Personnel 2002/2003 and areas of activity
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Scientific
Staff
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Field
of Activity
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No.
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Dr.
A. Baumgärtner
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Statistical mechanics of proteins and membranes;
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23.102
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Prof. E. Eisenriegler
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Polymers near surfaces, colloid-polymer mixtures
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23.102
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Prof. G. Gompper
Institute Director
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Statistical mechanics of amphiphilic systems
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23.102
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Dr. G. Schütz
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Non-equilibrium Statistical Mechanics; Polymer dynamics
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23.102
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Dr. G. A. Vliegenthart
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Colloid-polymer mixtures, polymerized membranes
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23.102
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Prof. R. G. Winkler
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Charged and uncharged macromolecular systems
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23.102
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Secretary
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Field
of Activity
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No.
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H. Paffen
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Secretary
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Postdocs
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Field
of Activity
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No.
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Dr. E. Allakhiarov
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Charged Colloids
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23.102
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Dr. A. Cherstvy
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Polyelectrolyte Complexes
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23.102
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Dr. K. Mussawisade
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Hydrodynamics of Complex Fluids
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23.102
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Dr. V. Popkov
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Driven Diffusive Systems
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23.102
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Dr. A. Rakos
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Diffusive Systems
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23.102
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Dr. M. Ripoll
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Hydrodynamics of Complex Fluids
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23.102
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Diploma
& Graduate Students
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Field
of Activity
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No.
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T. Auth
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Polymers at membranes
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23.102
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R. Maassen
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Polymer depletion interaction
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23.102
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M. Paeßens
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Finite-size effects in entangled polymers
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23.102
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R. Willmann
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Polymer dynamics in disordered media
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23.102
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Guests
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Field
of Activity
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No.
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W. Vos
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(University of Wageningen, The Netherlands)
Simulations of membrane proteins (Jan. - March 2002)
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23.102
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Dr. K.P.N. Murthy
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(Indira Ghandi Centre for Atomic Research, Kalpakkam, India)
Random Walks on Lattices (Feb. - April 2002)
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23.102
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S. Grosskinsky
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(Technische Universitat München)
Boundary-induced phase transitions (March 2002)
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23.102
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Prof. T. Burkhardt
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(Temple University, Philadelphia, USA)
Semi-flexible polymers (June - July 2002)
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23.102
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K. Hur
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(University Schillim-Doug, Seoul, South-Korea)
Polymer conformations (July - Sept. 2002)
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23.102
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Prof. T. Kohyama
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(Shiga University, Japan)
Shapes and fluctuations of vesicles (March - Dec. 2002)
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23.102
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Dr. A. Lamura
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(CNR, Bari, Italy)
Hydrodynamics of complex fluids (July 2002)
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23.102
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Publications in journals
Allahyarov,E.; Gompper,G.
Mesoscopic solvent simulations : multiparticle-collision dynamics
of three-dimensional flows
Physical review E, 66 (2002), S. 036702
Belitsky,V.; Schütz,G. M.
Diffusion and scattering of shocks in the partially asymmetric
simple exclusion process
Electronic journal of probability, 7 (2002), 11, S. 1 - 21
Descas,R.*; Mussawisade,K.
Hopping diffusion of two coupled particles in random trap model
Physical review E, 66 (2002), S. 051103
Eisenriegler,E.; Maassen,R.
Center-of-mass distribution of a polymer near a repulsive wall
Journal of chemical physics, 116 (2002), S. 449
Gompper,G.; Kroll,D. M.
The freezing transition of flexible membranes
Europhysics letters, 58 (2002), 1, S. 60 - 66
Gozdz,W.T.*; Gompper,G.
Phase behavior of two-component membranes
Colloids and surfaces A:physicochemical and engineering aspects, 208
(2002), S. 241 - 251
Haluska,C. K.*; Gozdz,W. T.*; Döbereiner,H.-G.*; Förster,S.*;
Gompper,G.
Giant hexagonal superstructures in diblock copolymer membranes
Physical review letters, 89 (2002), S. 238302
Kafri,Y.*; Levine,E.*; Mukamel,D.*; Schütz,G. M.; Török,J.*
Criterion for phase separation in one-dimensional driven systems
Physical review letters, 89 (2002), S. 035702
Lübeck,S.*; Willmann,R. D.
Universal scaling behaviour of directed percolation and the pair
contact process in an external field
Journal of physics A, 35 (2002), S. 10205 - 10217
Maassen,R.; Eisenriegler,E.; Bringer,A.
Erratum : density depletion profile and solvation free energy of
a colloidal particle in a polymer solution
Journal of chemical physics, 116 (2002), S. 1207
Müller,M.; Gompper,G.
Elastic properties of polymer interfaces : aggregation of pure
diblock, mixed diblock, and triblock copolymers
Physical review E, 66 (2002), S. 041805
Paessens,M.; Schütz,G.M.
DMRG studies of the effect of constraint release on the viscosity
of polymer melts
Physical review E, 66 (2002), S. 021806
Popkov,V.; Fouladvand,M. E.*; Schütz,G.M.
A sufficient criterion for integrability of stochastic many-body
dynamics and quantum spin chains
Journal of physics A, 35 (2002), S. 7187 - 7204
Popkov,V.; Schütz,G. M.
Integrable Markov processes and quantum spin chains
Matematiceskaja fizika, analiz, geometrija, 3 (2002), S. 1 - 11
Schilling,T.; Gompper,G.
Wetting in ternary mixtures - with and without amphiphiles
Journal of chemical physics, 117 (2002), S. 7284 - 7294
Schäfer,L.; Ebert,U.; Baumgärtner,A.
Coherent scattering function in the reptation model : analysis
beyond asymptotic limits
Physical review E, 65 (2002), S. 061505
Stepanow,S.*; Schütz,G. M.
The distribution function of a semiflexible polymer and random
walks with constraints
Europhysics letters, 60 (2002), S. 546 - 551
Willmann,R.
Diffusion coefficient for reptation of polymers with kinematic
disorder
Journal of chemical physics, 116 (2002), 7, S. 2688 - 2691
Willmann,R. D.; Schütz,G.M.; Challet,D.*
Exact Hurst exponent and crossover behavior in a limit order market
model
Physica A, 316 (2002), S. 430 - 440
Winkler,R.
Virial pressure of periodic systems with long range forces
Journal of chemical physics, 117 (2002), S. 2449
Winkler,R.G.; Steinhauser,M.O.*; Reineker,P.*
Complex formation in systems of oppositely charged polyelectrolytes
: a molecular dynamics simulation study
Physical review E, 66 (2002), S. 021802
Book chapter
Baumgärtner,A.
Polymer mixtures
Soft matter : complex materials on mesoscopic scale ; lecture manuscripts
of the 33rd IFF winter school, this winter school was organized on
March, 04 - 15, 2002 in the Forschungszentrum Jülich by the Institut
für Festkörperforschung ... / ed.: J. K. G. Dhont. - Jülich,
2002. - (Schriften des Forschungszentrums Jülich, Reihe Materie
und Material/Matter and Materials ; 10). - 3-89336-297-5. - S. B4.1
- B4.16
Baumgärtner,A.
Scaling laws of polymers
Soft matter : complex materials on mesoscopic scale ; lecture manuscripts
of the 33rd IFF winter school, this winter school was organized on
March, 04 - 15, 2002 in the Forschungszentrum Jülich by the Institut
für Festkörperforschung ... / ed.: J. K. G. Dhont. - Jülich,
2002. - (Schriften des Forschungszentrums Jülich, Reihe Materie
und Material/Matter and Materials ; 10). - 3-89336-297-5. - S. B3.1
- B3.13
Eisenriegler,E.
Polymers near surfaces
Soft matter : complex materials on mesoscopic scale ; lecture manuscripts
of the 33rd IFF winter school, this winter school was organized on
March, 04 - 15, 2002 in the Forschungszentrum Jülich by the Institut
für Festkörperforschung ... / ed.: J. K. G. Dhont. - Jülich,
2002. - (Schriften des Forschungszentrums Jülich, Reihe Materie
und Material/Matter and Materials ; 10). - 3-89336-297-5. - S. B10.1
- 10.16
Gompper,G.
Statistical mechanics of membranes
Soft matter : complex materials on mesoscopic scale ; lecture manuscripts
of the 33rd IFF winter school, this winter school was organized on
March, 04 - 15, 2002 in the Forschungszentrum Jülich by the Institut
für Festkörperforschung ... / ed.: J. K. G. Dhont. - Jülich,
2002. - (Schriften des Forschungszentrums Jülich, Reihe Materie
und Material/Matter and Materials ; 10). - 3-89336-297-5. - S. B9.1
- B9.46
Schütz,G. M.
Random motion in equilibrium
Soft matter : complex materials on mesoscopic scale ; lecture manuscripts
of the 33rd IFF winter school, this winter school was organized on
March, 04 - 15, 2002 in the Forschungszentrum Jülich by the Institut
für Festkörperforschung ... / ed.: J. K. G. Dhont. - Jülich,
2002. - (Schriften des Forschungszentrums Jülich, Reihe Materie
und Material/Matter and Materials ; 10). - 3-89336-297-5. - S. C1.1
- C1.24
Winkler,R.G.
Polyelectrolytes
Soft matter : complex materials on mesoscopic scale ; lecture manuscripts
of the 33rd IFF winter school, this winter school was organized on
March, 04 - 15, 2002 in the Forschungszentrum Jülich by the Institut
für Festkörperforschung ... / ed.: J. K. G. Dhont. - Jülich,
2002. - (Schriften des Forschungszentrums Jülich, Reihe Materie
und Material/Matter and Materials ; 10). - 3-89336-297-5. - S. B5.1
- B5.22
Invited talks
Baumgärtner,A.
The physics of cell locomotion
Jülich Soft Matter Days 2002
Kerkrade, Niederlande: 19.11.2002 - 22.11.2002
Baumgärtner,A.
The physics of cell locomotion
DAE Solid State Physics Symposium
Chandigarh, Indien: 26.12.2002
Gompper,G.
Structure and phase behavior of membran ensembles
Workshop Mathematical Aspects of Material Science : Soft Matter
Schloß Ringberg: 17.10.2002 - 02.11.2002
Gompper,G.
Structure and phase behavior of membrane ensembles
15th Marian Smoluchowski Symposium on Statistical Physics
Zakopane, Poland: 07.09.2002 - 12.09.2002
Schütz,G.
Phase separation in one-dimensional stochastic particle systems
VIth Brazilian School of Probability
Ubatuba, Brasilien: 05.08.2002 - 10.08.2002
Schütz,G. M.
Criterion for phase separation in one-dimensional driven systems
La Physique Statistique Hors Equilibre et Les Systemes Desordonnes
: Universität Nancy
Nancy, Frankreich: 29.05.2002 - 31.05.2002
Schütz,G. M.
From single-file diffusion to molecular/colloidal traffic control
SFB-Symposium on Molecules in Interaction with Interfaces
Leipzig, Deutschland: 09.10.2002 - 11.10.2002
Schütz,G. M.
Phase separation in one-dimensional nonequilibrium systems
TH2002 : UNESCO
Paris, Frankreich: 22.07.2002 - 27.07.2002
Schütz,G. M.
Theory of boundary-induced phase transitions
Annual Conference of the Iranian Physical Society
Zanjan, Iran: 24.08.2002 - 27.08.2002
Vliegenthart,G.
Depletion induced phase transitions : possible relevance for red
blood cell aggregation
11th International Congress of Biorheology and 4th International Conference
on Clinical Hemorheology
Antalya, Türkei: 22.09.2002 - 26.09.2002
Vliegenthart,G.
Phase transitions and gelation of silica-polystyrene mixtures in
benzene
Faraday Discussion 123 : Non-Equilibrium Phase Behaviour of Colloidal
Dispersions
Edinburgh, UK: 09.09.2002 - 11.09.2002
Other talks
Baumgärtner,A.
Lipid-protein interactions at ion channels
COST D22 Meeting on Supramolecular Assemblies
Madrid, Spanien: 15.03.2002
Baumgärtner,A.
Molecular dynamics simulations of membrane proteins
Workshop Biology meets Physics : Forschungszentrum Jülich
Jülich: 20.02.2002
Baumgärtner,A.
Polymer mixtures
Soft matter : complex materials on mesoscopic scales ; 33. IFF-Ferienkurs
2002, FZ Jülich
Jülich: 04.03.2002 - 15.03.2002
Baumgärtner,A.
Scaling laws of polymers
Soft matter : complex materials on mesoscopic scales ; 33. IFF-Ferienkurs
2002, FZ Jülich
Jülich: 04.03.2002 - 15.03.2002
Baumgärtner,A.
The hydrogen-bonded network in bacteriorhodopsin
COST D22 Workshop on Nanotechnologies of Membrane Mimetic Systems
Graz, Österreich: 11.10.2002
Baumgärtner,A.
Zellbewegung
Beiratsitzung IFF : Forschungszentrum Jülich
Jülich: 21.03.2002
Eisenriegler,E.
Polymers near surfaces
Soft matter : complex materials on mesoscopic scales ; 33. IFF-Ferienkurs
2002, FZ Jülich
Jülich: 04.03.2002 - 15.03.2002
Gompper,G.
Aktuelle Forschungsarbeiten des Instituts für Festkörperforschung
:
Bericht des Geschäftsführenden Direktors
17. Sitzung des Wissenschaftlichen Beirats : Forschungszentrum Jülich
Jülich: 21.03.2002
Gompper,G.
Statistical mechanics of membranes
Soft matter : complex materials on mesoscopic scales, 33. IFF-Ferienkurs
2002 ; Forschungszentrum Jülich
Jülich: 04.03.2002 - 15.03.2002
Gompper,G.
Statistische Physik der Weichen Materie
Oberseminar der Sektion Physik und des CeNS : Ludwig-Maximilians-Universität
München: 31.05.2002
Gompper,G.
Statistische Physik der Weichen Materie
HGF-Workshop Kondensierte Materie : Forschungszentrum Jülich
Jülich: 06.11.2002
Gompper,G.
Weiche Materie : Amphiphile, Membranen, Schwamm-Phasen
Kolloquiumsvortrag : Martin Luther Universität
Halle-Wittenberg: 07.02.2002
Schütz,G.
Dynamical Matrix Product : Ansatz und Integrable Systems
Universidade Sao Paulo
Sao Carlos, Brasilien: 14.08.2002
Schütz,G.
Phasenseparation in eindimensionalen stochastischen Vielteilchensystemen
Universität Halle
Halle: 16.04.2002 - 16.04.2002
Schütz,G. M.
Diffusion and interaction of shocks in the asymmetric simple exclusion
process
Universität Lausanne
Lausanne, Schweiz: 13.03.2002
Schütz,G. M.
Dynamical matrix product : Ansatz and integrable systems
Freie Universität Berlin
Berlin, Deutschland: 05.02.2002
Schütz,G. M.
Lattice gas model for relaxation of entangled polymers
Hahn-Meitner-Institut Berlin
Berlin, Deutschland: 04.02.2002
Schütz,G. M.
Microscopic structure and dynamics of interface in stochastic particle
systems
Universität Leipzig
Leipzig, Deutschland: 10.04.2002
Schütz,G. M.
Random motion in equilibrium
Soft matter : complex materials on mesoscopic scales ; 33. IFF-Ferienkurs
2002, FZ Jülich
Jülich: 04.03.2002 - 15.03.2002
Schütz,G. M.
Relaxation of entangled polymers
Universität Freiburg
Freiburg, Deutschland: 02.12.2002
Schütz,G. M.
Relaxation verschlaufter Polymere
Universität Bonn
Bonn, Deutschland: 12.12.2002
Schütz,G. M.
Stochastische Vielteilchensysteme fern vom Gleichgewicht
Universität Köln
Köln, Deutschland: 22.04.2002
Winkler,R. G.
Dynamics of semiflexible macromolecules : from DNA in solution
to polymer melts
Institut Charles Sadron
Strasbourg, France: 10.12.2002
Winkler,R. G.
Structure of polyelectrolyte solutions : from repulsion to attraction
Institut für Polymerforschung
Dresden, Deutschland: 07.11.2002
Winkler,R.G.
Polyelectrolytes
Soft matter : complex materials on mesoscopic scales, 33. IFF-Ferienkurs
2002 ; Forschungszentrum Jülich
Jülich: 04.03.2002 - 15.03.2002
Ph.D. Theses
Maassen,R.
Mesoscopic particles in polymer solutions
2002
Düsseldorf, Univ., Diss., 2002 |
