Localized surface plasmon resonance based nanocube-nanosphere dimer biosensor
This Thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Applied Physics and Electronics, 2017.
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BRAC University
2018
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| Linkit: | http://hdl.handle.net/10361/9113 |
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10361-91132019-09-30T03:08:17Z Localized surface plasmon resonance based nanocube-nanosphere dimer biosensor Ahmed, Arik Rafiquddin Das, Avijit Department of Mathematics and Natural Sciences, BRAC University LSPR Human fibrinogen IgG Lysozyme Nanocube-nanosphere This Thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Applied Physics and Electronics, 2017. Cataloged from PDF version of Thesis. Includes bibliographical references (page 57-58). For this paper, the Localized Surface Plasmon Resonance (LSPR) properties of bimetallic nanoparticles in the shape of a nanocube-nanosphere and consisting of Drude metals was analysed. The refractive index based plasmonic bio-sensing with nanocube-nanosphere dimers was studied through the illumination of a broadband beam at normal. The power absorption curves and electric field graphs for different material combinations between the nanocube and nanosphere were analysed to select the best material combination, which was found as silver nanocube-silver nanosphere. Using that combination, the gap between the nanocube and nanosphere was varied to find out the optimal gap, which was found as 1 nm. Taking that gap and material combination, the physical dimensions of the nanocube and nanosphere were varied and the best nanocube-nanosphere size was selected which was a nanocube of side length 20 nm and a nanosphere of radius 12.5 nm. The refractive index sensitivity was analysed in terms of different dielectric media. The sensitivity of the nanocube-nanosphere was also calculated in the presence of Lysozyme (Lys), Human Serum Albumin (HSA), Human gamma-immunoglobulin (IgG) and Human Fibrinogen (Fb) protein samples. Therefore, a comparative analysis was done to highlight how well the dimer performed as a biosensor in certain conditions. All of these processes were simulated using the software FDTD solutions by Lumerical. Arik Rafiquddin Ahmed B. Applied Physics and Electronics 2018-01-21T05:58:12Z 2018-01-21T05:58:12Z 2017 2017-06 Thesis ID 13115002 http://hdl.handle.net/10361/9113 en BRAC University thesis are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. 58 pages application/pdf BRAC University |
| institution |
Brac University |
| collection |
Institutional Repository |
| language |
English |
| topic |
LSPR Human fibrinogen IgG Lysozyme Nanocube-nanosphere |
| spellingShingle |
LSPR Human fibrinogen IgG Lysozyme Nanocube-nanosphere Ahmed, Arik Rafiquddin Localized surface plasmon resonance based nanocube-nanosphere dimer biosensor |
| description |
This Thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Applied Physics and Electronics, 2017. |
| author2 |
Das, Avijit |
| author_facet |
Das, Avijit Ahmed, Arik Rafiquddin |
| format |
Thesis |
| author |
Ahmed, Arik Rafiquddin |
| author_sort |
Ahmed, Arik Rafiquddin |
| title |
Localized surface plasmon resonance based nanocube-nanosphere dimer biosensor |
| title_short |
Localized surface plasmon resonance based nanocube-nanosphere dimer biosensor |
| title_full |
Localized surface plasmon resonance based nanocube-nanosphere dimer biosensor |
| title_fullStr |
Localized surface plasmon resonance based nanocube-nanosphere dimer biosensor |
| title_full_unstemmed |
Localized surface plasmon resonance based nanocube-nanosphere dimer biosensor |
| title_sort |
localized surface plasmon resonance based nanocube-nanosphere dimer biosensor |
| publisher |
BRAC University |
| publishDate |
2018 |
| url |
http://hdl.handle.net/10361/9113 |
| work_keys_str_mv |
AT ahmedarikrafiquddin localizedsurfaceplasmonresonancebasednanocubenanospheredimerbiosensor |
| _version_ |
1814309690644889600 |