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Tuning of the Plasmonic Response Gold and Aluminum Nanoarrays for Sensing Applications
Nanoarrays are at the forefront of research and commercial plasmonic devices. The shape, size, and material of the structures present in the nanoarrays determine their optical response. Therefore, the performance and operating wavelength range of the nanoarrays can be tuned by the aforementioned parameters. The effect of shape, size, thickness, and periodicity of nanoarrays of gold and aluminum was compared using simulations. The coupling effect of the resonant modes observed in the nanoarrays resulted in a sharp and intense dip in the transmission spectra, which could be used for next generation chemical and biosensors. To quantify the performance, sensitivity of Au and Al nanoarrays were compared.
Keywords
Plasmons, Localized surface plasmon resonance (LSPR), Sensing, Gold nanoparticles
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