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- Christos N Likos, Bianca M Mladek, Dieter Gottwald, Gerhard Kahl
- The Journal of chemical physics
- 2007

We demonstrate the accuracy of the hypernetted chain closure and of the mean-field approximation for the calculation of the fluid-state properties of systems interacting by means of bounded and positive pair potentials with oscillating Fourier transforms. Subsequently, we prove the validity of a bilinear, random-phase density functional for arbitrary… (More)

- Bianca M Mladek, Dieter Gottwald, Gerhard Kahl, Martin Neumann, Christos N Likos
- Physical review letters
- 2006

We present results from density functional theory and computer simulations that unambiguously predict the occurrence of first-order freezing transitions for a large class of ultrasoft model systems into cluster crystals. The clusters consist of fully overlapping particles and arise without the existence of attractive forces. The number of particles… (More)

- Francisco J Martinez-Veracoechea, Bianca M Mladek, Alexei V Tkachenko, Daan Frenkel
- Physical review letters
- 2011

We report a Monte Carlo simulation study of the phase behavior of colloids coated with long, flexible DNA chains. We find that an important change occurs in the phase diagram when the number of DNAs per colloid is decreased below a critical value. In this case, the triple point disappears and the condensed phase that coexists with the vapor is always… (More)

- Bianca M Mladek, Julia Fornleitner, Francisco J Martinez-Veracoechea, Alexandre Dawid, Daan Frenkel
- Physical review letters
- 2012

We present a coarse-grained model of DNA-functionalized colloids that is computationally tractable. Importantly, the model parameters are solely based on experimental data. Using this highly simplified model, we can predict the phase behavior of DNA-functionalized nanocolloids without assuming pairwise additivity of the intercolloidal interactions. Our… (More)

- Bianca M Mladek, Dieter Gottwald, Gerhard Kahl, Martin Neumann, Christos N Likos
- The journal of physical chemistry. B
- 2007

We numerically investigate the formation of stable clusters of overlapping particles in certain systems interacting via purely repulsive, bounded pair potentials. In close vicinity of a first-order phase transition between a disordered and an ordered structure, clusters are encountered already in the fluid phase which then freeze into crystals with multiply… (More)

- Bianca M Mladek, Gerhard Kahl, Christos N Likos
- Physical review letters
- 2008

Recent theoretical studies have predicted a new clustering mechanism for soft matter particles that interact via a certain kind of purely repulsive, bounded potentials. At sufficiently high densities, clusters of overlapping particles are formed in the fluid, which upon further compression crystallize into cubic lattices with density-independent lattice… (More)

- Dominic A Lenz, Bianca M Mladek, Christos N Likos, Gerhard Kahl, Ronald Blaak
- The journal of physical chemistry. B
- 2011

We present results of monomer-resolved Monte Carlo simulations for a system of amphiphilic dendrimers of the second generation. Our investigations validate a coarse-grained level description based on the zero-density limit effective pair-interactions for low and intermediate densities, which predicted the formation of stable, finite aggregates in the fluid… (More)

- Dominic A Lenz, Ronald Blaak, Christos N Likos, Bianca M Mladek
- Physical review letters
- 2012

We perform extensive monomer-resolved computer simulations of suitably designed amphiphilic dendritic macromolecules over a broad range of densities, proving the existence and stability of cluster crystals formed in these systems, as predicted previously on the basis of effective pair potentials [B. M. Mladek et al., Phys. Rev. Lett. 96, 045701 (2006)]. Key… (More)

Recently, particular interest has been placed in the study of a strikingly counter-intuitive phenomenon: the clustering of purely repulsive soft particles. This contribution serves the purpose of both reviewing our current understanding of the multiple occupancy crystals and presenting details of recently developed tailor-cut approaches to the problem. We… (More)

- Dominic A Lenz, Bianca M Mladek, Christos N Likos, Ronald Blaak
- The Journal of chemical physics
- 2016

We pursue the goal of finding real-world examples of macromolecular aggregates that form cluster crystals, which have been predicted on the basis of coarse-grained, ultrasoft pair potentials belonging to a particular mathematical class [B. M. Mladek et al., Phys. Rev. Lett. 46, 045701 (2006)]. For this purpose, we examine in detail the phase behavior and… (More)