Scholarlink

<p>The vibration behavior of a single-layer graphene sheet has been studied by the molecular dynamics method. The dependence of the vibrational frequencies of the graphene sheet on its size and the concentration of vacancy defects has been obtained. It has been found that the dependence of the type of vibrational modes and their number on the aspect ratio of the graphene sheet is very different for large and small samples. It has been shown that ripples appear in narrow graphene sheets (nanoribbons), reducing the vibrational frequencies. In the case of nanoribbons with an aspect ratio <i>x</i>/<i>y</i> ≥ 3.5, the influence of ripples becomes significant and leads not only to a decrease in the vibrational frequencies, but also to the disappearance of the fundamental vibrational modes.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Dependence of the Vibrational Frequencies of a Graphene Sheet on the Ratio of Its Sides and the Number of Vacancy Defects

  • 期刊论文

  • 发表日期：

    2025年5月1日

查看全文
  • Z. A. Akhmatov,
  • Z. A. Akhmatov

摘要

The vibration behavior of a single-layer graphene sheet has been studied by the molecular dynamics method. The dependence of the vibrational frequencies of the graphene sheet on its size and the concentration of vacancy defects has been obtained. It has been found that the dependence of the type of vibrational modes and their number on the aspect ratio of the graphene sheet is very different for large and small samples. It has been shown that ripples appear in narrow graphene sheets (nanoribbons), reducing the vibrational frequencies. In the case of nanoribbons with an aspect ratio x/y ≥ 3.5, the influence of ripples becomes significant and leads not only to a decrease in the vibrational frequencies, but also to the disappearance of the fundamental vibrational modes.