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Nanostructured plasmonic gold films for enhanced sensitivity of SPR biological sensing and imaging
Author(s): Ajay Kumar Agrawal; Nitin Gupta; Abhijit Das; Kaleem Ahmed; Anuj Dhawan
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Paper Abstract

We present nanostructured gold films ⎯ with complex plasmonic nanostructures present on the surface of the films ⎯ for enhanced SPR-based sensing and imaging of biomolecules attached to the surface of these films. We employed rigorous coupled wave analysis (RCWA) for simulating the nanostructured plasmonic gold films. In our simulations, surface plasmon polaritons were excited on the surface of the nanostructured gold films using the Kretschmann configuration. We observe that these nanostructured gold films show a significant enhancement in the sensitivity of SPR sensing and imaging of biomolecules as compared to planar gold films when optimal geometries and sizes of the plasmonic nanostructures (present on the surface of the gold film) are employed.

Paper Details

Date Published: 7 March 2019
PDF: 8 pages
Proc. SPIE 10894, Plasmonics in Biology and Medicine XVI, 108940M (7 March 2019); doi: 10.1117/12.2511098
Show Author Affiliations
Ajay Kumar Agrawal, Indian Institute of Technology Delhi (India)
Nitin Gupta, Indian Institute of Technology Delhi (India)
Abhijit Das, Indian Institute of Technology Delhi (India)
Kaleem Ahmed, Indian Institute of Technology Delhi (India)
Anuj Dhawan, Indian Institute of Technology Delhi (India)


Published in SPIE Proceedings Vol. 10894:
Plasmonics in Biology and Medicine XVI
Tuan Vo-Dinh; Ho-Pui A. Ho; Krishanu Ray, Editor(s)

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