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  Light scattering from coupled plasmonic nanospheres on a stretchable substrate for application as a biosensor or mechanical sensor

Xie, H., Yaseen, M. T., Moirangthem, R. S., & Chang, Y.-C. (2014). Light scattering from coupled plasmonic nanospheres on a stretchable substrate for application as a biosensor or mechanical sensor. In WIT Transactions on Engineering Sciences (pp. 191-196). Southampton, UK: WITPress.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-D47B-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-D47C-5
Genre: Conference Paper

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 Creators:
Xie, Huaiyi1, Author              
Yaseen, Mohammad Tariq1, 2, 3, Author              
Moirangthem, Rakesh Singh4, Author              
Chang, Yia-Chung1, Author              
Affiliations:
1Research Centre for Applied Sciences, Academia Sinica, Taipei, Taiwan, persistent22              
2Academia Sinica, Taipei, Taiwan, persistent22              
3Department of Engineering and System Science, NTHU, Hsinchu, Taiwan, persistent22              
4Interface Spectroscopy, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863358              

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Free keywords: Biosensors; Ellipsometry; Information technology; Nanoparticles; Plasmons; Sensors; Stresses; Substrates, Applied mechanical stress; Coupled nanoparticles; Ellipsometric spectra; Interparticle distances; Metallic nanoparticles; Optical Metrology; Scattering theory; Stretchable materials, Gold
 Abstract: The ellipsometric spectra (Ψ and Δ) of coupled metallic nanoparticles on a stretchable substrate have been studied via the spherical-harmonics based Green's function method. We use Au trimmer nanoparticles and dielectric substrate. The calculated ellipsometric spectra show a plasmonic resonance peak with asymmetric lineshape. For a trimmer of metallic nanoparticles on a stretchable substrate, the separation between nanoparticles in the trimmer can be varied by the applied mechanical stress. We find that both the plasmonic resonance peak position and the signal strength at the resonance frequency are sensitive to the gap distance in the trimmer, which can be controlled by the stretchable substrate. The simulation results indicate that the sensitivity of the plasmonic resonance lineshape to the inter-particle distance allows this coupled nanoparticle system to be used as a biosensor or mechanical sensor. The experimental ellipsometric spectra for closely-spaced metallic nanoparticles on a PDMS substrate are also reported. Copy; 2014 WIT Press.

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Language(s): eng - English
 Dates: 2014
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.2495/AMITP20130231
BibTex Citekey: Xie2014191
ISBN: 978-184564853-4
ISSN: 17433533
 Degree: -

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Title: 2013 3rd International Conference on Advanced Materials and Information Technology Processing, AMITP 2013
Place of Event: Los Angeles, CA, USA
Start-/End Date: 2013-10-01 - 2013-10-02

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Title: WIT Transactions on Engineering Sciences
Source Genre: Proceedings
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Affiliations:
Publ. Info: Southampton, UK : WITPress
Pages: - Volume / Issue: 87 Sequence Number: - Start / End Page: 191 - 196 Identifier: -