First Principle Simulation for Electronic Structures and Transport Properties of Edge Doped Graphene Nanostructures for Applications in Glucose Sensors
| dc.contributor.advisor | Mazher, Javed (Professor) | |
| dc.contributor.author | Semu, Gishu | |
| dc.date.accessioned | 2018-07-12T13:26:59Z | |
| dc.date.accessioned | 2023-11-18T09:53:12Z | |
| dc.date.available | 2018-07-12T13:26:59Z | |
| dc.date.available | 2023-11-18T09:53:12Z | |
| dc.date.issued | 2012-06 | |
| dc.description.abstract | Glucose as adsorbed species on edges of the graphene nanostructures are found to create some significant variations among the nanostructure’s electronic properties and the changes are fruitfully tapped for futuristic nano-sensing applications. The present study is focused on ab-initio transport measurement for a nano-scale sensor which comprises of either H or O-edge doped zigzag graphene nanoribbons (zGNRs). A range of diverse transport phenomenon is observed by either variation of gating, edge doping, and biomolecular (glucose) attachments or by a combination of all these factors. Our results of these measurements point towards the suitability of ribbon’s zigzag edges as glucose attachment sites for the sensing purpose. Furthermore, transformations of conductivity, density of states, and current-voltage characteristics are studied in the nanostructural two-dimensional forms of carbon with foreign atoms doped in or in vicinity of the honeycomb lattice. In addition, we proposed some capable sensing device architectures for exploiting the newly explored unique functionalities. It is important to precisely control and study the density and character of the charge carriers, nature of chemical doping, and biomolecular adsorbates for tailoring the proposed in-vivo glucose sensor’s properties. First principle two probe methods are used in this work for the nanodevice simulation in conjunction with density functional theory (DFT) and nonequilibrium Green function (NEGF) methods in a standard electron-correlation approximation scheme of local density (LDA). | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/8380 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa Universty | en_US |
| dc.subject | edge doped graphene nanostructures | en_US |
| dc.title | First Principle Simulation for Electronic Structures and Transport Properties of Edge Doped Graphene Nanostructures for Applications in Glucose Sensors | en_US |
| dc.type | Thesis | en_US |