The criticality of self-assembled rigid rods on triangular lattices

Randomness in self-assembled colloidal crystals can widen photonic band gaps through particle shape and internal structure

Using computer simulations, we explore how thermal noise-induced randomness in a self-assembled photonic crystal affects its photonic band gaps (PBGs). We consider a two-dimensional photonic crystal comprised of a self-assembled array of parallel dielectric hard rods of infinite length with circular or square cross section. We find the PBGs can exist over a large range of intermediate packing densities. Counterintuitively, the largest band gap does not always appear at the packing density where the crystal is most ordered, despite the randomness inherent in any self-assembled structure. For ro…

由分段胶体棒自组装而成的可变换超等静压晶体

Transformable Super-Isostatic Crystals Self-Assembled from Segment Colloidal Rods

本研究通过蒙特卡洛模拟发现分段胶体棒可自组装出多种晶相，其中具有pgg对称的可变换超等静压结构的泊松比可调，可作为力学超材料应用于微机械工程。

fd病毒胶体棒在各向同性相和液晶相中的自扩散：单粒子追踪与差分动态显微学的联合研究

Self-diffusion in isotropic and liquid crystalline phases of fd virus colloidal rods: a combined single particle tracking and differential dynamic microscopy study

该研究联合SPT和DDM分析fd病毒胶体棒从稀液体到向列、近晶相的自扩散动力学，并给出近晶相长时间扩散系数等新认识。

Depletion-driven Morphological Transitions in Hexagonal Crystallites of Virus Rods

The assembly of nanometer-sized building blocks into complex morphologies is not only of fundamental interest but also plays a key role in material science and nanotechnology. We show that the shape of self-assembled superstructures formed by rod-like viruses can be controlled by tuning the attraction via the depletion interaction between the rods. Using nonadsorbing polymers as a depleting agent, we demonstrate that a hierarchical unidimensional self-organization into crystalline clusters emerges progressively upon increasing depletion attraction -and enhanced growth kinetics. We observe a po…

粒子取向与位置随机性对光子带隙的影响

Effects of orientational and positional randomness of particles on photonic band gap

本文研究粒子取向随机性和位置随机性对二维自组装光子晶体光子带隙的分别影响，发现取向随机性主要减小TE带隙，位置随机性显著减小TE带隙并使TM带隙依参数变宽或变窄，为自组装光子带隙工程提供理论指导。

Lattice models and Monte Carlo methods for simulating DNA origami self-assembly

The optimal design of DNA origami systems that assemble rapidly and robustly is hampered by the lack of a model for self-assembly that is sufficiently detailed yet computationally tractable. Here, we propose a model for DNA origami that strikes a balance between these two criteria by representing these systems on a lattice at the level of binding domains. The free energy of hybridization between individual binding domains is estimated with a nearest-neighbour model. Double helical segments are treated as rigid rods, but we allow flexibility at points where the backbone of one of the strands is…