Detection of gas atoms via vibration of graphenes

被引：89

作者：

Arash, Behrouz ^{[1
]}

Wang, Quan ^{[1
]}

Duan, Wen Hui ^{[2
]}

机构：

[1] Univ Manitoba, Dept Mech & Mfg Engn, Winnipeg, MB R3T 5V6, Canada

[2] Monash Univ, Dept Civil Engn, Clayton, Vic 3168, Australia

来源：

PHYSICS LETTERS A | 2011年 / 375卷 / 24期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Graphene sheets; Mass sensor; Frequency shifts; Noble gasses; Molecular dynamics; NANOMECHANICAL SENSORS; CARBON NANOTUBES; MASS SENSOR; RESONATORS; SHEETS;

D O I：

10.1016/j.physleta.2011.05.009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The application of single-layered graphene sheets as mass sensors in detection of noble gases via a vibration analysis of graphenes is investigated using molecular dynamics simulations. An index based on frequency shifts of the graphenes attached by the distinct noble gas atoms is defined and examined to measure the sensitivity of the sensors. The dependence of number and location of gas atoms, size of graphene sheets, and type of restrained boundary of the sheets on the sensitivity is particularly studied. The simulation results indicate the resolution of a mass sensor made of a square graphene sheet with a size of 10 nm can achieve an order of 10(-6) femtograms and the mass sensitivity can be enhanced with a decrease in sizes of graphenes. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2411 / 2415

页数：5

共 23 条

[1] Nonlocal plate model for free vibrations of single-layered graphene sheets [J].