0000000000544365

AUTHOR

D. Chaumont

showing 3 related works from this author

Optical determination and identification of organic shells around nanoparticles: application to silver nanoparticles

2013

We present a simple method to prove the presence of an organic shell around silver nanoparticles. This method is based on the comparison between optical extinction measurements of isolated nanoparticles and Mie calculations predicting the expected wavelength of the Localized Surface Plasmon Resonance of the nanoparticles with and without the presence of an organic layer. This method was applied to silver nanoparticles which seemed to be well protected from oxidation. Further experimental characterization via Surface Enhanced Raman Spectroscopy (SERS) measurements allowed to identify this protective shell as ethylene glycol. Combining LSPR and SERS measurements could thus give proof of both …

inorganic chemicalsMaterials scienceMie scatteringeducationSilver nanoparticleShell (structure)FOS: Physical sciencesNanoparticlePhysics::Optics02 engineering and technology010402 general chemistry01 natural sciencesSilver nanoparticlesurface enhanced raman spectroscopychemistry.chemical_compoundlocalized surface plasmon resonanceMesoscale and Nanoscale Physics (cond-mat.mes-hall)Physics::Atomic and Molecular ClustersMie theoryGeneral Materials ScienceSurface plasmon resonancehealth care economics and organizationsPlasmonCondensed Matter - Materials ScienceCondensed Matter - Mesoscale and Nanoscale Physicstechnology industry and agricultureMaterials Science (cond-mat.mtrl-sci)Surface-enhanced Raman spectroscopy021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical scienceschemistryChemical engineering[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonicorganic shells0210 nano-technologyEthylene glycol
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Densification of MnDoped Tin Oxide Films by Conventional Heating and Microwave Heating Treatment

2005

Mn(II) doped SnO2 thin films used for shielding fluoride glasses against corrosion were investigated by x-ray absorption spectroscopy (EXAFS and XANE)S at the Sn and Mn K-edges. The effect of firing treatment on the densification of the films was studied. It has been evidenced a partial change of Mn valence from 2.3 to 2.6 upon heating which is attributed to a change of ratios of two Mn sites: grafted divalent Mn ions at the surface of SnO2 nanocrystallites and trivalent Mn ions embedded into a substitutional solid solution with Sn.

Materials scienceExtended X-ray absorption fine structureAbsorption spectroscopyTin dioxideInorganic chemistryDopingchemistry.chemical_elementManganeseCondensed Matter PhysicsTin oxideAtomic and Molecular Physics and Opticschemistry.chemical_compoundchemistryThin filmMathematical PhysicsSolid solutionPhysica Scripta
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Effect of Fe-incorporation on Structural and Optoelectronic Properties of Spin Coated p/n Type ZnO Thin Films

2020

symbols.namesakeRadiationMaterials sciencebusiness.industrysymbolsOptoelectronicsGeneral Materials ScienceThin filmCondensed Matter PhysicsbusinessSpin (physics)Raman scatteringJournal of Nano- and Electronic Physics
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