Surface plasmon resonance sensing using index-matched metallic nano-hole array structures

Mohamadreza Najiminaini; Fartash Vasefi; Bozena Kaminska; Jeffrey J. L. Carson

doi:10.1117/12.909723

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6 February 2012 Surface plasmon resonance sensing using index-matched metallic nano-hole array structures

Mohamadreza Najiminaini; Fartash Vasefi; Bozena Kaminska; Jeffrey J. L. Carson

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Proceedings Volume 8234, Plasmonics in Biology and Medicine IX; 82341N (2012) https://doi.org/10.1117/12.909723
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

We present a novel three-dimensional nano-hole array structure in an optically thick gold film, which benefits from Surface Plasmon (SP) energy matching between the top and bottom of the gold film. We have experimentally evaluated both a conventional and an SP energy-matched nano-hole array structure for Surface Plasmon Resonance (SPR) sensing. Also, detection of various bulk refractive index liquids has been tested for both structures based on the transmission intensity differences in a narrow detection band. We observed a 2-fold higher sensitivity during SPR sensing with the new structure compared to a conventional nano-hole array.

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Mohamadreza Najiminaini, Fartash Vasefi, Bozena Kaminska, and Jeffrey J. L. Carson "Surface plasmon resonance sensing using index-matched metallic nano-hole array structures", Proc. SPIE 8234, Plasmonics in Biology and Medicine IX, 82341N (6 February 2012); https://doi.org/10.1117/12.909723

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