**Acknowledgements**

ZnO and Cu2O particles deposited from water dispersions obtained by PLAL; the composites obtained were covered by *Escherichia coli* bacteria. The figure illustrates the suppression of bacteria growth on fabrics with nanoparticles, while bacteria multiply on the test sample.

260 Applications of Laser Ablation - Thin Film Deposition, Nanomaterial Synthesis and Surface Modification

Among other applications in biomedicine, the prospects of using CeO2, TiO2 and ZnO obtained by PLAL to protect the skin from UV radiation (sunscreen) are worth noting. Lately, CeO2 has attracted more and more attention in this field [29] because its toxicity is much lower than

The new direction that has developed effectively in nanomedicine in the last decade is the use of magnetic nanoparticles for modern theranostics—to deliver drugs, for contrasting of pathological object and in magnetic therapy. The use of PLAL for obtaining nanoparticles with special magnetic properties based on oxides of 3d metals directly in the biologically compatible liquids, their functionalization by gold particles and biopolymers have great prospects for the

Pulsed laser ablation in liquids is a unique physical-chemical method of obtaining nanostructures in colloidal solutions. At the beginning of the process, physical high-energy pulsed laser irradiation stimulates the chain of both physical and chemical processes that lead to the formation of nanoparticles. Careful control of the process allows a large variety of nanostructures to be obtained. This method cannot be considered as the classic top-down approach of

**Figure 9.** *E. coli* growth inhibition by zinc oxide and copper oxide nanoparticles.

standard TiO2 and its photocatalytic effects are lower as well.

applications mentioned above.

**5. Conclusions**

This work was carried out under the State Assignment No. 2014/223 of the Ministry of Education and Science of the Russian Federation (Project No. 1347).
