Evidence for surface plasmons in a liquid crystal containing gold nanoparticles

Evidence for surface plasmons in a liquid crystal containing gold nanoparticles

We present evidence for surface plasmons (SPs) in a nematic liquid crystal (LC) containing dispersion of gold nanoparticles (Au NPs). The evidence originates from observations of attenuated total reflection (ATR) of p-polarized laser incident upon a high-index prism/LC-Au NPs/glass structure. We arg...

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Veröffentlicht in:Applied physics letters 2012-12, Vol.101 (25)
Hauptverfasser: Tiwari, Kunal, Singh, Ankit K., Sharma, Suresh C.
Format: Artikel
Sprache:eng
Schlagworte:
Attenuation
Dispersions
Evanescent waves
Gold
Liquid crystals
Nanoparticles
Plasmons
Spark plasma sintering
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Zusammenfassung:We present evidence for surface plasmons (SPs) in a nematic liquid crystal (LC) containing dispersion of gold nanoparticles (Au NPs). The evidence originates from observations of attenuated total reflection (ATR) of p-polarized laser incident upon a high-index prism/LC-Au NPs/glass structure. We argue that SPs are generated through evanescent waves interacting with Au NPs embedded in the LC and NPs' dispersing medium.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4772066