In the present manuscript we present the feasibility of two different routes to obtain metal nanoparticles:
(1) inert gas deposition technique (IGC) and (2) chemical routes. These two routes can enable
the production of metal nanoparticles with a well-controlled size and shape distribution. In addition,
Co/Au and Pd/Au nanoparticles have been deposited on three different grids with the aim of studying the
coalescence of the different metals. The as-synthesized materials, that initially were forming isolated,
core–shell, were sintered by thermal treatment (Co/Au) or by strong electron beam irradiation and the
subsequent characterization was carried out in situ in an aberration corrected STEM.