{"title":"Theoretical Investigation on Transportance for Single-Walled Nanotubes, and Bi-Layer Graphene","authors":"Maher Abdullah","doi":"10.33899/rjs.2024.182836","DOIUrl":null,"url":null,"abstract":"The transport properties of several carbon nanoparticle derivatives, including single-layer nanotubes and bi-layer graphene, under an external constant electric field, are investigated. Results were analyzed and identified as a function of the quasi-classical approximation of relaxation time by using the Boltzmann kinetic equations. These approaches have been used to obtain the relationships between the electric conductivity σ( E ) and electrons diffusion coefficient D ( E ) in carbon nanostructures. This study proves that when the temperature rises the electrical conductivity σ( E ) decreases for both single-layer and bi-layer carbon nanostructures. For a wide range of temperatures, the electrical conductivity σ (E) behavior of the studied nanoparticles is nonlinearly dependent on the magnitude of the external electric field ( E ). In contrast, the electron diffusion coefficient D ( E ) is independent of temperature for both single-and bi-layers. It also shows that the intensity of an external electric field possesses a nonlinear influence on the electron diffusion coefficient.","PeriodicalId":20803,"journal":{"name":"Rafidain journal of science","volume":"22 15","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rafidain journal of science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.33899/rjs.2024.182836","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The transport properties of several carbon nanoparticle derivatives, including single-layer nanotubes and bi-layer graphene, under an external constant electric field, are investigated. Results were analyzed and identified as a function of the quasi-classical approximation of relaxation time by using the Boltzmann kinetic equations. These approaches have been used to obtain the relationships between the electric conductivity σ( E ) and electrons diffusion coefficient D ( E ) in carbon nanostructures. This study proves that when the temperature rises the electrical conductivity σ( E ) decreases for both single-layer and bi-layer carbon nanostructures. For a wide range of temperatures, the electrical conductivity σ (E) behavior of the studied nanoparticles is nonlinearly dependent on the magnitude of the external electric field ( E ). In contrast, the electron diffusion coefficient D ( E ) is independent of temperature for both single-and bi-layers. It also shows that the intensity of an external electric field possesses a nonlinear influence on the electron diffusion coefficient.
研究了单层纳米管和双层石墨烯等几种碳纳米粒子衍生物在外部恒定电场下的传输特性。利用玻尔兹曼动力学方程分析并确定了结果与弛豫时间准经典近似值的函数关系。这些方法被用来获得碳纳米结构中电导率 σ( E ) 和电子扩散系数 D ( E ) 之间的关系。这项研究证明,当温度升高时,单层和双层碳纳米结构的导电率 σ( E ) 都会降低。在很宽的温度范围内,所研究纳米粒子的电导率σ(E)行为与外部电场(E)的大小呈非线性关系。相反,单层和双层的电子扩散系数 D ( E ) 与温度无关。这也表明外电场强度对电子扩散系数具有非线性影响。