title: Size and nanocrystallinity controlled gold nanocrystals: synthesis, electronic and mechanical properties.
abstract: The influence of nanocrystallinity on the electronic and mechanical properties of metal nanoparticles is still poorly understood, due to the difficulty in synthesizing nanoparticles with a controlled internal structure. Here, we report on a new method for the selective synthesis of Au nanoparticles in either a single-domain or a polycrystalline phase maintaining the same chemical environment. We obtain quasi-spherical nanoparticles whose diameter is tunable from 6 to 13 nm with a resolution down to ≈0.5 nm and narrow size distribution (4-5%). The availability of such high-quality samples allows the study of the impact of the particle size and nanocrystallinity on a number of parameters, such as plasmon dephasing time, electron-phonon coupling, period and damping time of the radial breathing modes.
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 8233, MONARIS, F-75005, Paris, France. marie-paule.pileni@upmc.fr.
authors.forename: N
authors.initials: N
authors.lastname: Goubet
authors.forename: I
authors.initials: I
authors.lastname: Tempra
authors.forename: J
authors.initials: J
authors.lastname: Yang
authors.forename: G
authors.initials: G
authors.lastname: Soavi
authors.forename: D
authors.initials: D
authors.lastname: Polli
authors.forename: G
authors.initials: G
authors.lastname: Cerullo
authors.forename: M P
authors.initials: MP
authors.lastname: Pileni