Influence of silver-nanoparticle layer in a chiral sculptured thin film for surface-multiplasmonic sensing

Stephen E. Swiontek; Akhlesh Lakhtakia

doi:10.1117/12.2185842

20 August 2015 Influence of silver-nanoparticle layer in a chiral sculptured thin film for surface-multiplasmonic sensing

Stephen E. Swiontek, Akhlesh Lakhtakia

Author Affiliations +

Proceedings Volume 9558, Nanostructured Thin Films VIII; 95580P (2015) https://doi.org/10.1117/12.2185842
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

Abstract

Multiple surface-plasmon-polariton (SPP) waves can be guided by the interface of a metal and a chiral sculptured thin film (STF). It is possible to embed within the chiral STF a layer of silver nanoparticles as sites to bind recognition molecules for sensing analytes of a certain kind. Chiral STFs were deposited on aluminum thin films. 5-nm-thick layers of silver nanoparticles were deposited in the chiral STF at different depths in different samples. The samples were then deployed in the Turbadar–Kretschmann–Raether configuration to observe the effects the silver-nanoparticle layer had on the multiple SPP-wave modes in relation to the depth. We concluded that the silver-nanoparticle layer tends to shift the angular locations of the SPP-wave modes but does not necessarily affect the location of the SPP-wave modes to an extent that would render the data uninterpretable.

Conference Presentation

Citation Download Citation

Stephen E. Swiontek and Akhlesh Lakhtakia "Influence of silver-nanoparticle layer in a chiral sculptured thin film for surface-multiplasmonic sensing", Proc. SPIE 9558, Nanostructured Thin Films VIII, 95580P (20 August 2015); https://doi.org/10.1117/12.2185842

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