Open Otto chip as an SPR pressure transducer

Neto, J. O. Maciel; Cavalcanti, Gustavo Oliveira; Llamas-Garro, Ignacio; Kim, Jung-Mu; Fontana, Eduardo

doi:10.1109/ursiap-rasc.2016.7601179

2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC) 2016

DOI: 10.1109/ursiap-rasc.2016.7601179

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Open Otto chip as an SPR pressure transducer

J. O. Maciel Neto¹,

Gustavo Oliveira Cavalcanti²,

Ignacio Llamas-Garro³

et al.

Abstract: A sealed Otto chip device has recently been demonstrated as a potential alternative for the traditional Kretschmann based configuration for the development of surface plasmon resonance -SPR -sensors. We have fabricated an open Otto chip structure on silicon and have characterized the SPR effect at a wavelength of 975.1 nm. In this paper we report on the potential of the structure to act as a pressure transducer.

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Adjustable microscopic measurement of nanogap waveguide and plasmonic structures

et al. 2018

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We investigate the performance of surface plasmon and Fabry-Perot modes formed between two closely spaced layers. The motivation for this study is twofold: first, to look for modes that may be excited at lower incident angles compared to the usual Kretschmann configuration with similar or superior refractive index responsivity and, second, to develop a simple and applicable method to study these structures over a wide range of separations without recourse to the construction of ad hoc structures. Using back focal plane observation and appropriate signal processing, we show results for the Otto configuration at visible wavelengths at a range of separations not reported hitherto. Moreover, we investigate a hybrid structure we call the Kretschmann-Otto configuration that gives modes that change continuously from a hybridized surface plasmon mode to a zero-order Fabry-Perot mode. The ability to change the separation to small gap distances enables us to examine the Fabry-Perot modes where we show that it has superior refractive index responsivity, by more than an order of magnitude, compared to the Kretschmann configuration.

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Adjustable microscopic measurement of nanogap waveguide and plasmonic structures

et al. 2018

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Open Otto chip as an SPR pressure transducer

Cited by 1 publication

References 10 publications

Adjustable microscopic measurement of nanogap waveguide and plasmonic structures

Adjustable microscopic measurement of nanogap waveguide and plasmonic structures

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