Abstract

The mechanical behavior of DNA-like structures has been investigated within the framework of a harmonic Hamiltonian and the Green’s function formulism. Three models, a fishbone model and two double strand models, have been considered to model the structure of DNA and obtain the vibration spectra. The results show that increasing the number of building blocks inside the crystalline units decreases the influence of randomness on the vibrational response of the systems. The absence of a large gap in the vibration curve of one model separates it from the other two models in terms of how it responds to mechanical excitations.

中文翻译：

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不同模型中 DNA 的振动特性

摘要

已经在谐波哈密顿量和格林函数公式的框架内研究了类 DNA 结构的力学行为。三种模型，一个鱼骨模型和两个双链模型，已被考虑用于模拟 DNA 的结构并获得振动光谱。结果表明，增加晶体单元内的构件数量会降低随机性对系统振动响应的影响。一个模型的振动曲线中没有大的间隙，就其对机械激励的响应方式而言，它与其他两个模型不同。