# Re-entrant disordering of colloidal molecular crystals on two-dimensional periodic substrates

@article{Mikulis2004ReentrantDO, title={Re-entrant disordering of colloidal molecular crystals on two-dimensional periodic substrates}, author={Michael C. Mikulis and C. J. O. Reichhardt and C. J. O. Reichhardt and Richard T. Scalettar and Gergely T. Zim{\'a}nyi}, journal={Journal of Physics: Condensed Matter}, year={2004}, volume={16}, pages={7909-7916} }

Using numerical simulations, we study colloidal ordering and disordering on two-dimensional periodic substrates where the number of colloids per substrate minima is two or three. The colloids form dimer or trimer states with orientational ordering, referred to as colloidal molecular crystals. At a fixed temperature such that, in the absence of a substrate, the colloids are in a triangular floating solid state, upon increasing the substrate strength we find a transition to an ordered colloidal…

## 11 Citations

Ordering and melting in colloidal molecular crystal mixtures.

- Materials Science, PhysicsPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2005

We show in simulations that a rich variety of interesting orderings such as pinwheel and star states can be realized for colloidal molecular crystal mixtures at rational ratios of the number of…

Statics and dynamics of Yukawa cluster crystals on ordered substrates.

- Physics, MedicinePhysical review. E, Statistical, nonlinear, and soft matter physics
- 2012

The statics and dynamics of particles with repulsive Yukawa interactions in the presence of a two-dimensional triangular substrate for fillings of up to 12 particles per potential minimum are examined, finding a series of novel crystalline states that are characterized using the structure factor.

Statics and dynamics of colloidal particles on optical trap arrays

- Materials Science, EngineeringNanoScience + Engineering
- 2009

We examine the statics and dynamics of charged colloids interacting with periodic optical trap arrays. In particular we study the regime where more than one colloid is confined in each trap, creating…

Colloidal model system for island formation.

- Chemistry, MedicineJournal of physics. Condensed matter : an Institute of Physics journal
- 2009

This work presents model calculations to explore the possibility of colloidal island formation over strained surfaces and finds that the unidirectional field induces the formation of infinitely extended ridges, while hexagonal strain fields lead to regular pyramidal island structures which can be distorted in a controlled way by adding the unidsirectional strain component.

Tricriticality for dimeric Coulomb molecular crystals in ground state

- Physics
- 2017

We study the ground-state properties of a system of dimers. Each dimer consists in a pair of equivalent charges at a fixed distance, immersed in a neutralizing homogeneous background. All charges…

Enhancement of mobilities in a pinned multidomain crystal

- Physics
- 2007

Mobility properties inside and around degenerate domains of an elastic lattice partially pinned on a square array of traps are explored by means of a fully controllable model system of macroscopic…

The Fluctuation-Dissipation Theorem of Colloidal Particle's energy on 2D Periodic Substrates: A Monte Carlo Study of thermal noise-like fluctuation and diffusion like Brownian motion

- Physics
- 2014

Using the Monte Carlo simulations, we have calculated mean-square fluctuations in statistical mechanics, such as those for colloids energy configuration are set on square 2D periodic substrates…

Yukawa particles confined in a channel and subject to a periodic potential : ground state and normal modes

- Physics
- 2011

We consider a classical system of two-dimensional (2D) charged particles, which interact through a repulsive Yukawa potential $exp(-r/\lambda)/r$, confined in a parabolic channel which limits the…

Rectification and phase locking of graphite

- Materials Science
- 2015

Rectification phenomena and the phase locking in a two-dimensional overdamped Frenkel–Kontorova model with a graphite periodic substrate were studied. The presence of dc and ac forces in the…

Nanostructured two-dimensional materials

- Materials Science
- 2015

Abstract The chapter overviews the recent advancements in development of two-dimensional (2D) layered semiconductor nanocrystals as one of the fastest growing fields of nanomaterials. The chapter…

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