Ion irradiation for controlling composition and structure of metal alloy nanoclusters in SiO2

Engineering embedded metal nanoparticles with ion beam technology

“…4. The formation of satellite NPs were also observed by Mattei et al by irradiation of AuCu or AuAg alloy NPs using different ions [28]. They found that the satellite NP size initially increased with the fluence and then tended to be saturated at larger fluences.…”

Formation of nanoparticles in soda-lime glasses by single and double ion implantation

“…Studies on Ag-Au nanoparticles are typically concerned with the issues of separated monometallic particles, segregated bimetallic particles, and alloy particles [8][9][10][11]. Some work has been done dealing with the formation of bimetallic or alloy nanoparticles by double ion implantation in silica glass [12][13][14][15] where the existence of such particles, their structure and thermal stability have been explored using optical spectroscopy, transmission electron microscopy (TEM), X-ray absorption fine structure (EXAFS) spectroscopy as well as of X-ray diffraction and scattering.…”

Nonlinear optical properties of Au–Ag nanoplanets made by ion beam processing of bimetallic nanoclusters in silica

“…Upon Ar irradiation (Fig. 1b), then, the formation of Au-enriched satellite clusters around each original cluster is promoted, giving rise to the nanoplanets (NPls) structure [8].…”

“…Recently, ion irradiation has been effectively employed to produce a new class of nanocluster structures named ''nanoplanets" (NPls), consisting of a central cluster surrounded by small satellites clusters [7]. The structural and compositional properties of these systems have been characterized in details as a function of the irradiation conditions (ion, energy, fluence) [8]. Moreover, the plasmonic properties of the NPls have been theoretically investigated in the framework of a full-interaction electromagnetic approach [9], revealing large local-field enhancements in the satellite cluster halos.…”