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Results

(June 2020) Work on chiral gold nanoparticles in collaboration with Prof. L. Liz-Marzan was published in Science: “Micelle-directed chiral seeded growth on anisotropic gold nanocrystals”, Science 368 (6498), 1472 (2020).

Groovy chiral gold particles. Although plasmonic optical activity can arise from chiral assemblies of gold and silver nanoparticles, there are few examples of gold nanoparticles with intrinsic chirality and high optical activity. González-Rubio et al. show that morphological chirality can be induced during the seeded growth of gold nanoparticles, particularly for highly anisotropic nanorods. Chiral additives as cosurfactants formed helical micelles that directed the seeded growth to create grooves that maintained a chiral morphology. The resulting particles displayed high-intensity circular dichroism with anisotropy factors near 0.2 at near-infrared wavelengths.

(May 2019) Application of newly developed methodology to realistic samples was published in ACS Nano: “Thermal Stability of Gold/Palladium Octopods Studied in Situ in 3D: Understanding Design Rules for Thermally Stable Metal Nanoparticles” ACS Nano 13, 6522 (2019). (open access pdf)

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(Dec 2018) Proof of principle methodology for the investigation of nanoparticles in realistic conditions was published in Nano Letters: “Three-Dimensional Quantification of the Facet Evolution of Pt Nanoparticles in a Variable Gaseous Environment”, Nano Lett. 19, 477 (2019).