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| Peron, Olivier; Rinnert, Emmanuel; Toury, T.; De La Chapelle, M. Lamy; Compere, Chantal. |
| In the investigation of chemical pollutants, such as PAHs (Polycyclic Aromatic Hydrocarbons) at low concentration in aqueous medium, Surface-Enhanced Raman Scattering (SERS) stands for an alternative to the inherent low cross-section of normal Raman scattering. Indeed, SERS is a very sensitive spectroscopic technique due to the excitation of the surface plasmon modes of the nanostructured metallic film. The surface of quartz substrates was coated with a hydrophobic film obtained by silanization and subsequently reacted with polystyrene (PS) beads coated with gold nanoparticles. The hydrophobic surface of the SERS substrates pre-concentrates non-polar molecules such as naphthalene. Under laser excitation, the SERS-active substrates allow the detection and... |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00026/13760/10890.pdf |
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| Tijunelyte, I.; Guenin, E.; Lidgi-guigui, N.; Colas, Florent; Ibrahim, J.; Toury, T.; Lamy De La Chapelle, M.. |
| Nanoplasmonics is a growing field of optical condensed matter science dedicated to optical phenomena at the nanoscale level in metal systems. Extensive research on noble metallic nanoparticles (NPs) has emerged within the last two decades due to their ability to keep the optical energy concentrated in the vicinity of NPs, in particular, the ability to create optical near-field enhancement followed by heat generation. We have exploited these properties in order to induce a localised “click” reaction in the vicinity of gold nanostructures under unfavourable experimental conditions. We demonstrate that this reaction can be controlled by the plasmonic properties of the nanostructures and we propose two physical mechanisms to interpret the observed plasmonic... |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00368/47954/48018.pdf |
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