Bulk Metallic Glasses (BMGs) have been object of large scientific research due to their outstanding mechanical properties such as high hardness and yield strength up to 7 and 2 GPa, respectively as a result of their amorphous atomic structure [1, 2].However, their major drawback is the low ductility and brittle failure caused by the formation of shear bands. Nevertheless, this weakness can be overcome by reducing the intrinsic length scale of the specimen down to the submicrometric scale activating mechanical size effects, which prevent the formation of shear bands, while increasing the mechanical properties. For instance, thin film metallic glasses (TFMGs, thickness <1m) reported a yield strength up to ~4 GPa, large ductility with the suppression of formation of shear bands with promising applications as scratch and wear resistant coatings as well as for stretchable electronics [2, 3]. However, there are still many challenges in the study of TFMGs involving the effect of composition on the glass forming ability and on mechanical properties, while the synthesis of novel microstructures (e.g. multilayers, nanogranular films etc.) with even boosted mechanical properties and thermal stability are still an open scientific domain. In this context, the objective of my PhD research (within the framework of a Vinci project sponsored by the Université Franco-Italienne) is to investigate the mechanical properties and thermal stability of ZrCu-based TFMGs alloys with different compositions and thicknesses, while exploiting pulsed laser deposition (PLD) as a novel technique enabling to accurately control the nanoscale morphology of the film [4]. Up to now, we have deposited ZrCu and ZrCuAl TFMGs by PLD with different contents of Al (%at.) as well as with compact and nanogranular morphology. Films have been characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), while we are currently investigating the mechanical properties by using Brillouin light scattering and tensile tests on polymeric substrates. 1.Pan D., et al., Experimental characterization of shear transformation zones for plastic flow of bulk metallic glasses. Proceedings of the National Academy of Sciences, 2008. 105(39): p. 14769-14772. 2.Tian L., et al., Approaching the ideal elastic limit of metallic glasses. Nature Communications, 2012. 3(1): p. 609. 3.Ghidelli M., et al., Homogeneous flow and size dependent mechanical behavior in highly ductile Zr65Ni35 metallic glass films. Acta Materialia, 2017. 131: p. 246-259. 4.M. Ghidelli, A.O., A. Li Bassi, G. Terraneo, P. Djemia, G. Abadias, M. Nord, A. Béché, N. Gauquelin, J. Verbeeck, J.-P. Raskin, D. Schryvers, T. Pardoen, H. Idrissi, Novel class of nanostructured metallic glass films with superior and tunable mechanical properties. Acta Materialia, 2021. 213: p. 9.