Layer-by-layer assembly of patchy particles as a route to nontrivial structures

We present a method of controlling polymorphism in self-assembly, and apply it to the longstanding problem of assembly of a colloidal diamond. The latter is often viewed as a "Holy Grail" of a self assembly field, due to the challenge that it presents as well as thanks to its potential as a step towards manufacturing of photonic bad gap materials. In our approach, we use a "chromatic" version of traditional building blocks, so-called patchy particle. Namely, the individual patches that belong to the same particle in our model are distinguishable ("colored") and their pairwise interactions are color-dependent, which could be implemented with the help of DNA fictionalization. We propose a design procedure, and and verify it with the help of Brownian Dynamics simulations. Not only are we able to "program" the self-assembly of a high quality Cubic Diamond lattice, but a small modification of the coloring scheme also allows us to "re-program" the system to assemble into the alternative polymorph, Hexagonal Diamond.

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“…To study the system, we use the force field introduced in our previous work [45]. The patch-patch pairwise interaction potentials are modeled as:…”

Section: Resultsmentioning

confidence: 99%

Programmable self-assembly of diamond polymorphs from chromatic patchy particles

Patra

Tkachenko

2018

Phys. Rev. E

Self Cite

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“…For example, triblock patchy particles having two patches on the polar positions 3-5, 8, 23, 24 have drawn much attention as building blocks for photonic crystals with a complete photonic band gap 25,26 . Whereas patchy particles used in experiments were not necessarily spherical 6,11,16 , the structures and cluster shapes examined in a theoretical study 29 and simulations [30][31][32][33][34][35][36][37][38][39][40][41][42][43] were mainly for spherical patchy particles.…”

Section: Introductionmentioning

confidence: 98%

Clusters Formed by Dumbbell-like One-Patch Particles Confined in Thin Systems

Sato

2021

Preprint

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Performing isothermal-isochoric Monte Carlo simulations, I examine the types of clusters that dumbbell-like one–patch particles form in thin space between two parallel walls, assuming that each particle is synthesized through the merging of two particles, one non-attracting and the other attracting for which, for example, the inter-particle interaction is approximated by the DLVO model. The shape of these dumbbell-like particles is controlled by the ratio of the diameters q of the two spherical particles and by the dimensionless distance l between them. Using a modified Kern–Frenkel potential, I examine the dependence of the cluster shape on l and q. Large island-like clusters are created when q < 1. With increasing q, the clusters become chain-like. When q increases further, elongated clusters and regular polygonal clusters are created. In hte simulations, the cluster shape becomes three-dimensional with increasing l because the thickness of the thin system increases proportionally to l.

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“…They are promising building blocks for functional materials because unique and complicated structures that are not created with isotropic particles form owing to the anisotropic interaction induced by the patch areas. For example, the triblock patchy particles which have two patches on their polar positions are considered to be building blocks used for photonic crystals with complete photonic band gap. − Many groups − have studied self-assemblies formed by patchy particles. Preisler et al used the Kern–Frenkel (KF) potential and performed Monte Carlo simulations for one-patchy particles with a short interaction length.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Interaction Length on Clusters Formed by Spherical One-Patch Particles on Flat Planes

Sato

2021

Langmuir

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Considering that one-patch particles rotate threedimensionally and translate on a two-dimensional flat plane, I performed isothermal−isochoric Monte Carlo simulations to study how two-dimensional self-assemblies formed by spherical patchy particles depending on the interaction length and patch area. As the interaction potential between one-patch particles, the Kern− Frenkel (KF) potential is used in the simulations. With increasing patch area, the shape of the most numerous clusters changes from dimers to island-like clusters with a square lattice via triangular trimers, square tetramers, and chain-like clusters when the interaction length is as long as the particle radius. With a longer interaction length, other shapes of polygonal clusters such as another type of square tetramers, two types of pentagonal pentamers, hexagonal hexamers, and hexagonal heptamers also form.

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Layer-by-layer assembly of patchy particles as a route to nontrivial structures

Cited by 16 publications

References 34 publications

Programmable self-assembly of diamond polymorphs from chromatic patchy particles

Programmable self-assembly of diamond polymorphs from chromatic patchy particles

Clusters Formed by Dumbbell-like One-Patch Particles Confined in Thin Systems

Effect of the Interaction Length on Clusters Formed by Spherical One-Patch Particles on Flat Planes

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