Truong, Vo-Van 
ORCID: https://orcid.org/0000-0003-3535-3749 and Dormale, Bernard
(2011)
Optical Absorption in Overcoats of Nanoparticle Arrays on a Metallic Substrate.
Plasmonics, 6
(2).
pp. 195-200.
ISSN 1557-1955
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812kBTruong_Plasmonics_2011.pdf - Accepted Version |
Official URL: http://dx.doi.org/10.1007/s11468-010-9187-y
Abstract
Surface plasma oscillations in metallic particles as well as in thin metallic films have been studied extensively in the past decades. New features regarding surface plasma excitations are, however, constantly discovered, leading, for example, to surface-enhanced Raman scattering studies and enhanced optical transmission though metal films with nanohole arrays. In the present work, the role of a metallic substrate is examined in two cases, one involving an overcoat of dielectric nanoparticles and the other an overcoat of metallic nanoparticles. Theoretical results are obtained by modeling the nanoparticles as forming a two-dimensional, hexagonal lattice of spheres. The scattered electromagnetic field is then calculated using a variant of the Green function method. Comparison with experimental results is made for nanoparticles of tungsten oxide and tin oxide deposited on either gold or silver substrates, giving qualitative agreement on the extra absorption observed when the dielectric nanoparticles are added to the metallic surfaces. Such absorption would be attributed to the mirror image effects between the particles and the substrate. On the other hand, calculations of the optical properties of silver or gold nanoparticle arrays on a gold or a silver substrate demonstrate very interesting features in the spectral region from 400 to 1,000 nm. Interactions between the nanoparticle arrays surface plasmons and their images in the metallic substrate would be responsible for the red shift observed in the absorption resonance. Moreover, effects of particle size and ambient index of refraction are studied, showing a great potential for applications in biosensing with structures consisting of metallic nanoparticle arrays on metallic substrates.
| Divisions: | Concordia University > Faculty of Arts and Science > Physics |
|---|---|
| Item Type: | Article |
| Refereed: | Yes |
| Authors: | Truong, Vo-Van and Dormale, Bernard |
| Journal or Publication: | Plasmonics |
| Date: | 8 December 2011 |
| Digital Object Identifier (DOI): | 10.1007/s11468-010-9187-y |
| Keywords: | Nanoparticles – Plasmonics – Optical properties – Biosensing |
| ID Code: | 7653 |
| Deposited By: | Danielle Dennie |
| Deposited On: | 15 Jun 2011 14:04 |
| Last Modified: | 18 Jan 2018 17:31 |
References:
1. Yamaguchi T, Yoshida S, Kinbara A (1974) Thin Solid Films 21:1732. Norrman S, Anderson T, Granqvist CG, Hunderi O (1978) Phys Rev B 18:674
3. Truong VV, Scott GD, Opt J (1977) Soc Am 67:502–510
4. Nonaka S, Suda T, Oda H (2002) Jpn J Appl Phys 41:4538
5. Granqvist CG, Hunderi O (1978) Appl Phys Lett 32:798
6. Enoch S, Quidant R, Badenes G (2004) Opt Express 12:3422
7. Driskell JD, Lipert RJ, Porter MD (2006) J Phys Chem B 110:17444
8. Genet C, Ebbesen TW (2007) Nature 445:39
9. de Dormale BM, Truong VV (2009) Diffraction of light by a two-dimensional lattice of spheres. Preprint, Université de Moncton
10. de Dormale BM (1996) Can J Phys 74:43
11. de Dormale BM (1996) Can J Phys 74:603
12. de Dormale BM (1996) Can J Phys 74:608
13. Bosi G (1994) J Opt Soc Am B 11:1073
14. Stefanou N, Modinos A (1991) J Phys Condens Matter 3:8135
15. Bedeaux D, Vlieger J (2002) Optical properties of surfaces. Imperial College Press, London
16. Ziman JM (1972) Principles of the theory of solids, 2nd edn. Cambridge University Press, Cambridge
17. Jackson JD (1975) Classical electrodynamics, 2nd edn. Wiley, New York
18. Born M, Wolf E (1980) Principles of optics, 6th edn. Pergamon, Oxford
19. Truong VV, Yamaguchi T (1990) Bull Res Inst Electron Jpn 25:1
20. Truong VV, Ashrit PV, Bader G, Courteau P, Girouard FE, Yamaguchi T (1991) Can J Phys 69:107
21. Ashrit PV, Bader G, Girouard FE, Richard T, Truong VV (1991) J Appl Phys 70:3797
22. McIntyre JDE, Aspnes DE (1971) Surf Sci 24:417
23. Borensztein Y (2005) Phys Status Solidi 202:1313
24. Bader G (2008) Au, Ag and WO3 optical constants. Université de Moncton (private communication)
25. Davazoglou D (1997) Thin Solid Films 302:204
26. Seirafianpour N, Badilescu S, Djaoued Y, Bruning R, Balaji S, Kahrizi M, Truong VV (2008) E-MRS 2008 Paper
27. Agranovich VM, Darmanyan SA, Mal’chukov AG (1980) Opt Comm 33:234
28. Steinmann W (1968) Phys Status Solidi 28:437
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