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A Mass-Producible And Versatile Sensing System: Localized Surface Plasmon Resonance Excited By Individual Waveguide Modes, Zhutian Ding, James M. Stubbs, Danielle Mcrae, Johanna M. Blacquiere, François Lagugné-Labarthet, Silvia Mittler
A Mass-Producible And Versatile Sensing System: Localized Surface Plasmon Resonance Excited By Individual Waveguide Modes, Zhutian Ding, James M. Stubbs, Danielle Mcrae, Johanna M. Blacquiere, François Lagugné-Labarthet, Silvia Mittler
Physics and Astronomy Publications
A plasmonic sensing system that allows the excitation of localized surface plasmon resonance (LSPR) by individual waveguide modes is presented conceptually and experimentally. Any change in the local environment of the gold nanoparticles (AuNPs) alters the degree of coupling between LSPR and a polymer slab waveguide, which then modulates the transmission-output signal. In comparison to conventional LSPR sensors, this system is less susceptible to optical noise and positional variation of signals. Moreover, it enables more freedom in the exploitation of plasmonic hot spots with both transverse electric (TE) and transverse magnetic (TM) modes. Through real-time measurement, it is demonstrated that …