Applications of single-layered graphene sheets as mass sensors and atomistic dust detectors

• Published in: Solid state communications Vol. 145; no. 4; pp. 168 - 172
• Main Authors: Sakhaee-Pour, A., Ahmadian, M.T., Vafai, A.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2008; Elsevier
• Subjects: A. Single-layered graphene sheet (SLGS); A. Thin film; Cross-disciplinary physics: materials science; rheology; D. Dust detector; D. Mass sensor; Exact sciences and technology; Materials science; Nanoscale materials and structures: fabrication and characterization; Physics; 46.40.-f; 62.30.+d; D. Mass sensor; 43.40.+s; A. Single-layered graphene sheet (SLGS); A. Thin film; D. Dust detector; Thin films; Graphene; Chirality; A. Thin film; A. Single-layered graphene sheet (SLGS); D. Mass sensor; D. Dust detector; Boundary conditions; Sensors; Nanostructures; 43.40.+s; 46.40.-f; 62.30.+d; Application; Structural analysis
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/j.ssc.2007.10.032

Molecular structural mechanics is implemented to model the vibrational behavior of defect-free single-layered graphene sheets (SLGSs) at constant temperature. To mimic these two-dimensional layers, zigzag and armchair models with cantilever and bridge boundary conditions are adopted. Fundamental frequencies of these nanostructures are calculated, and it is perceived that they are independent of the chirality and aspect ratio. The effects of point mass and atomistic dust on the fundamental frequencies are also considered in order to investigate the possibility of using SLGSs as sensors. The results show that the principal frequencies are highly sensitive to an added mass of the order of 1 0 − 6 fg .