Publications by authors named "J C Gaudin"
In this study, we explore the influence of bromide anions concentration on the surface chemistry of colloidal gold nanoparticles synthesized pulsed laser ablation in liquids (PLAL). Using X-ray photoelectron spectroscopy (XPS) in a controlled environment, by probing a beam of free-standing gold nanoparticles, we quantitatively characterize the surface composition of the nanoparticles, revealing that bromide adsorption significantly contributes to surface oxidation independently of counterion type and pH for alkaline solution. Additionally, our findings demonstrate the adjustability of halogen coverage post-synthesis, offering a versatile method for controlling nanoparticle properties.
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- A study conducted in 2021 and 2022 collected over 7,300 samples from 36 pepper fields in southwestern France to investigate the cucumber mosaic virus (CMV) affecting Espelette pepper.
- Five new natural host species of CMV were identified, including Arum italicum and Trifolium incarnatum.
- A specific CMV variant was found to be very common in pepper crops (78%) and some wild plants (8%), and this variant has been previously reported in France, dating back to at least 2009.