Localized surface plasmon resonance in bimetallic core-shell nanoparticles
This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2016.
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| Médium: | Diplomová práce |
| Jazyk: | English |
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BRAC University
2017
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| On-line přístup: | http://hdl.handle.net/10361/7735 |
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10361-77352019-09-30T03:04:59Z Localized surface plasmon resonance in bimetallic core-shell nanoparticles Rahman, Syeda Adiba Mirzana Chowdhury, Ishmam Salim Siddha, Simanta Hasan, Md. Mahmudul Das, Avijit Department of Electrical and Electronic Engineering, BRAC University Surface Plasmon Bimetallic core-shell Localized Surface Plasmon Resonance (LSPR) This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2016. Cataloged from PDF version of thesis report. Includes bibliographical references (page 58-62). Colloidal nanoparticles have unique Localized Surface Plasmon Resonance (LSPR) properties. Various applications for LSPRs are in optics, photo catalysis, medicine and photovoltaics. For our research, we use the Mie Theory to analyze the LSPR properties of bimetallic core-shell nanoparticles in the shape of a sphere and consisting of Drude metals. We have come to see that there is a special LSPR mode in the interface between the two metals, i.e. the core and the shell, whose energy is concentrated at both the inner and the outer surfaces of the bimetallic nanoparticle. These phenomena are known as Ordinary Surface Plasmon Resonance and Extraordinary Surface Plasmon Resonance for the outer and inner surfaces respectively. The shape of the extinction spectrum and the shift of LSPR peak as a function of various geometric parameters are determined by both the Ordinary and Extraordinary LSPR modes together. When extended to practical noble metals such as Gold (Au) and Silver (Ag), we find that the SPR of Au@Ag (Gold core and Silver shell) nanoparticles can occur in the visible region with high tunability, which is beneficial to the enhancement of bio-sensing. Previous research has shown that Ordinary Plasmon Resonance can be used for bio-sensing by using one metal. In this paper, we will see that Extraordinary Plasmon Resonance can also be used to for bio-sensing. By changing the parameters of the core and the shell, and the substrate material, we will see the change in the Power Absorption curve, the electric field coupling, Sensitivity of the biomolecule and the SPR Shift. Syeda Adiba Mirzana Rahman Ishmam Salim Chowdhury Simanta Siddha Md. Mahmudul Hasan B. Electrical and Electronic Engineering 2017-02-09T06:41:00Z 2017-02-09T06:41:00Z 2016 2016-12 Thesis ID 12121168 ID 13121031 ID 12121125 ID 12121135 http://hdl.handle.net/10361/7735 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. 62 pages application/pdf BRAC University |
| institution |
Brac University |
| collection |
Institutional Repository |
| language |
English |
| topic |
Surface Plasmon Bimetallic core-shell Localized Surface Plasmon Resonance (LSPR) |
| spellingShingle |
Surface Plasmon Bimetallic core-shell Localized Surface Plasmon Resonance (LSPR) Rahman, Syeda Adiba Mirzana Chowdhury, Ishmam Salim Siddha, Simanta Hasan, Md. Mahmudul Localized surface plasmon resonance in bimetallic core-shell nanoparticles |
| description |
This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2016. |
| author2 |
Das, Avijit |
| author_facet |
Das, Avijit Rahman, Syeda Adiba Mirzana Chowdhury, Ishmam Salim Siddha, Simanta Hasan, Md. Mahmudul |
| format |
Thesis |
| author |
Rahman, Syeda Adiba Mirzana Chowdhury, Ishmam Salim Siddha, Simanta Hasan, Md. Mahmudul |
| author_sort |
Rahman, Syeda Adiba Mirzana |
| title |
Localized surface plasmon resonance in bimetallic core-shell nanoparticles |
| title_short |
Localized surface plasmon resonance in bimetallic core-shell nanoparticles |
| title_full |
Localized surface plasmon resonance in bimetallic core-shell nanoparticles |
| title_fullStr |
Localized surface plasmon resonance in bimetallic core-shell nanoparticles |
| title_full_unstemmed |
Localized surface plasmon resonance in bimetallic core-shell nanoparticles |
| title_sort |
localized surface plasmon resonance in bimetallic core-shell nanoparticles |
| publisher |
BRAC University |
| publishDate |
2017 |
| url |
http://hdl.handle.net/10361/7735 |
| work_keys_str_mv |
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| _version_ |
1814307973877465088 |