Light trapping and enhancing gold nanoparticle array substrates made by thermal dewetting technique

T. W. Chang; H. Jin; G. L. Liu

doi:10.1117/12.930035

10 October 2012 Light trapping and enhancing gold nanoparticle array substrates made by thermal dewetting technique

T. W. Chang, H. Jin, G. L. Liu

Proceedings Volume 8460, Biosensing and Nanomedicine V; 84600N (2012) https://doi.org/10.1117/12.930035
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

In this paper, we fabricated gold particle array substrate by thermal dewetting technique. The fabrication process is simple, reliable, cost efficient with comparing to other techniques. From optical characteristic it shows light trapping ability to reduce reflectance around 75%. Combining light trapping and its localized plasmonic properties, this substrate has significant advantages on plasmonic based sensing methods such as surface enhanced Raman scattering (SERS). SERS measurement has been performed and the enhancement factor is 2.58×10⁵. Further more, after silver thin film deposition the enhancement can be increased up to 2 orders and the enhancement factor is 3.66×10⁷.

Citation Download Citation

T. W. Chang, H. Jin, and G. L. Liu "Light trapping and enhancing gold nanoparticle array substrates made by thermal dewetting technique", Proc. SPIE 8460, Biosensing and Nanomedicine V, 84600N (10 October 2012); https://doi.org/10.1117/12.930035

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