Fullerenes as mass sensors: A numerical investigation |
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| Affiliation: | 1. Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Athens, Greece;2. Department of Informatics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;3. Department of Electronics, Technological and Educational Institute of Piraeus, 12244 Aegaleo, Greece;4. Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA;1. Nanotechnology and Advanced Materials Laboratory, Department of Electrical Engineering, Technological-Educational Institute of Western Greece, GR-26334 Patras, Greece;2. Physics Department, University of Patras, 26500 Patras, Greece;3. Brite Hellas S.A., Solar Technologies, Patras Science Park, Platani area Patra, 26504, Greece;4. Department of Mechanical Engineering, Technological-Educational Institute of Western Greece, GR-26334 Patras, Greece;1. Department of Dermatology and Venereology, West China Hospital, Sichuan University, Chengdu, China;2. Center of Geriatrics and Gerontology, West China Hospital, Sichuan University, Chengdu, China;3. Center for Technology Enabled Health Research, Coventry University, Coventry, United Kingdom;4. Unit of Dermatology, Clinica GO&FER, Barcelona, Spain;1. Democritus University of Thrace, Department Electrical and Computer Engineering, Xanthi 67100, Greece;2. Democritus University of Thrace, Department Environmental Engineering, Xanthi 67100, Greece |
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| Abstract: | This paper investigates the novel development of a mass sensitive nanosensor based on the use of individual spherical fullerenes. The main advantage of the mass sensing ability of spherical fullerenes in comparison with other nanomaterials such as carbon nanotubes (CNTs) or graphene nanoribbons (GNRs) is the fact that they present almost perfect geometric symmetry and thus a unique vibrational behavior which is independent from the location of the externally added nanoparticle. The study is conducted by the use of a computationally effective numerical scheme based on the adoption of appropriate three dimensional line spring elements as well as point mass elements to simulate the atomistic structure of fullerenes and interatomic interactions appearing between carbon atoms. The free vibration of C20, C60, C80 and C180 molecules is analyzed without and with an external nanoparticle of specific mass attached on their structure to calculate the arisen change in their natural frequencies and corresponding shape modes. A parametric study concerning the magnitude and location of the added mass is performed in order to evaluate the mass sensing ability of the fullerenes under consideration. |
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| Keywords: | Nanotechnology Fullerene Sensor Frequency Structural mechanics |
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