Nanostructures for investigating gap plasmon and sensing change in refractive index
| dc.contributor.author | Choudhury, Asif Imran Khan | |
| dc.contributor.supervisor | Gordon, Reuven | |
| dc.date.accessioned | 2010-10-04T16:06:38Z | |
| dc.date.available | 2010-10-04T16:06:38Z | |
| dc.date.copyright | 2010 | en |
| dc.date.issued | 2010-10-04T16:06:38Z | |
| dc.degree.department | Department of Electrical and Computer Engineering | |
| dc.degree.level | Master of Applied Science M.A.Sc. | en |
| dc.description.abstract | I have investigated gap plasmon mode of an eccentric coaxial waveguide structure using effective index method. The results found good agreement with fully-vectorial numerical calculation. In the eccentric structure, a strong field localization has been noticed at and around the smallest gap. Analysis showed the increase of effective index of lowest-order waveguide mode to 3.7 in the structure considered with a 2 nm minimum gap for a wavelength of 4 micrometer. In the visible regime, the effective index increases to over 10 for the same structure. Nanohole arrays, both flowover and flow-through formats, have been fabricated using focused ion beam (FIB). A 2-color LED-based nanohole sensor has been presented. The objective of the sensing platform was to register mutually opposite intensity change of transmitted light when the dielectric medium of metal-dielectric interface of the nanohole sensor undergoes a change. A number of tests with microfluidics setup demonstrated the proof-of-concept. | en |
| dc.identifier.uri | http://hdl.handle.net/1828/3073 | |
| dc.language | English | eng |
| dc.language.iso | en | en |
| dc.rights | Available to the World Wide Web | en |
| dc.subject | nanotechnology | en |
| dc.subject | 2-color led sensor | en |
| dc.subject | effective index | en |
| dc.subject | eccentric structure | en |
| dc.subject | focused ion beam | en |
| dc.subject | transmission mode sensing | en |
| dc.subject.lcsh | UVic Subject Index::Sciences and Engineering::Engineering | en |
| dc.title | Nanostructures for investigating gap plasmon and sensing change in refractive index | en |
| dc.type | Thesis | en |