The aim of [10] was to perform laser-assisted size reduction in nanoparticles of a gold (Au)-sputtered layer on a titanium (Ti) base material using an innovative method that could potentially be applied in novel blood contact and thromboresistive devices in live bodies, such as ventricular assist devices (VADs). The enrichment of the surface layer of titanium with gold nanoparticles, due to their bioproperties, may reduce the number of inflammatory reactions and infections which mainly occur in the first postoperative period and cause implant failure. The evaluation of gold particles was conducted using SEM using SE and QBSD detectors with EDS analysis. Attempts to reduce the deposited gold coating to the size of Au nanoparticles and to melt them into a titanium matrix using a laser beam have been successfully completed. There seems to be no strict relationship between the particle size distribution of gold onto Ti, probably due to the energy being too low to excite titanium enough, resulting from a difference in the Ti and Au melting point temperature. However, the obtained results allow for the continuation of pilot studies for augmented research and material properties analysis in the future. In [11], the effect of plasma modification on the print quality of biodegradable PLA films was investigated. PLA films, as non-absorbent materials, require modifications to their surfaces before the printing process to improve the wettability of the substrate and to obtain proper ink adhesion to the substrate. In this paper, the surfaces of two kinds of PLA films were modified using plasma activation with parameters enabling high surface free energy (SFE) values, and then, the films were printed on using different kinds of flexographic inks. Two gases, oxygen and argon, were used for activation, as these make it possible to obtain good hydrophilicity and high SFE values while having different effects on the roughness, or the degree of surface etching. Plasma-activated films were subsequently subjected to the measurements of contact angle with water, diiodomethane and three printing inks; the roughness, weight change, strength properties, color, gloss change and SFE were determined. The results showed a strong effect of activation with both oxygen and argon plasma on the SFE value of the films and the contact angles of water and inks, with the gas used for plasma activation and the type of film significantly influencing the thickness of the fused ink layer and the resultant color. The content of [12] is related to the Atomic Force Microscopy (AFM), method which is widely used in different fields to measure various types of material properties, such as mechanical, electrical, magnetic, or chemical properties. The ratio of dissipation to stored energy is defined as tan\(\delta\). This value can provide useful information about the sample under study, such as how viscoelastic or elastic the material is. In this paper, it four different sets of samples were studied, and loss tangent measurements were performed with both the first and second eigenmode frequencies. It was found that performing these measurements with a higher eigenmode is advantageous, minimizing the tip penetration through the surface and therefore minimizing the error in loss tangent measurements due to humidity or artificial dissipations that are not dependent on the actual sample surface. In [13], the significant problem regarding surface properties was investigated by means of EDEM and the experimental evaluation of the abrasive wear resistance performance of bionic micro-thorn and convex hull geometrically coupled structured surfaces. The authors of [14] verified the influence of thermochemical treatment on the surface properties of finish turned wire arc sprayed 17 Cr steel coatings. In the article, the influence of thermochemical surface hardening on the surface topography of wire arc sprayed 17 Cr steel layers after finish turning was investigated. Successful surface hardening via gas nitriding was shown.