Description of a technique based on the indirect nanoplasmonic sensing to probe the adsorption/reactivity of gas with nanoparticles
Résumé
The indirect nanoplasmonic sensing lets us to follow the adsorption/reactivity of gas on nanoparticles. We measure a shift in wavelength of the localized surface plasmon resonance signal of gold nanodisks on which nanoparticles are deposited. Indeed during the adsorption/reactivity of gas molecules on nanoparticles the dielectric properties at the surface of the nanoparticles are changed and it generates a displacement of the localized surface plasmon resonance wavelength of the underlying gold nanodetector [1].
We describe in this poster the different steps of the gold nanodisks fabrication (lift-off process), the experimental set-up and we show preliminary results obtained with water vapour on carbon nanoparticles.
[1] E. M. Larsson, C. Langhammer, I. Zoric, B. Kasemo, "Nanoplasmonic Probes of Catalytic Reactions", Science 326, 1091-1094 (2009)
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