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Two-dimensional structures formed in a binary system of DNA nanoparticles with a short-range interaction potential

机译：在具有短程相互作用潜能的DNA纳米颗粒的二元系统中形成的二维结构

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摘要

Covering nanoparticles with DNA strands is one of the useful methods of controlling the interaction between particles because DNA strands can be easily designed according to our specifications. Obtaining an idea from the two-dimensional structures formed by the nanoparticles covered with DNA strands, which we call DNA nanoparticles, we carry out Brownian dynamics simulations and study the formation of two-dimensional structures in a binary system. We assume that the different types of particles attract each other with Morse potential, which is minimum when their distance is sigma'. When the types of particles are the same and their distance is smaller than sigma, the particles are repulsive. The mixture of both square and triangular lattices is formed when sigma'/sigma =1. With decreasing sigma'/sigma, a square lattice, a honeycomb lattice, and string-shaped clusters are formed. The coexistence of both square and triangular lattices with large sigma'/sigma and the formation of stringlike clusters with small sigma'/sigma occur because we neglect the attraction between the same types of particles and use a short-range attraction between different types of particles. (C) 2018 The Japan Society of Applied Physics
机译：用DNA链覆盖纳米颗粒是控制颗粒之间相互作用的有用方法之一，因为可以根据我们的规范轻松设计DNA链。从被DNA链覆盖的纳米颗粒形成的二维结构（我们称为DNA纳米颗粒）中获得一个构想，我们进行了布朗动力学模拟，并研究了二元系统中二维结构的形成。我们假设不同类型的粒子以莫尔斯电势相互吸引，当它们的距离为sigma'时，这是最小的。当粒子的类型相同且距离小于sigma时，粒子将相互排斥。当sigma'/ sigma = 1时，将同时形成正方形和三角形晶格的混合物。随着σ/σ的减小，形成方格，蜂窝格和线状簇。具有大sigma'/ sigma的正方形和三角形晶格并存以及具有小sigma'/ sigma的串状簇的形成是共存的，因为我们忽略了相同类型的粒子之间的吸引力，而使用了不同类型的粒子之间的短距离吸引力。 （C）2018日本应用物理学会

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  • 来源
    《Japanese journal of applied physics》 |2018年第12期|125002.1-125002.5|共5页
  • 作者

    Sato Masahide;

  • 作者单位

    Kanazawa Univ, Informat Media Ctr, Kanazawa, Ishikawa 9201192, Japan;

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