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arXiv · 2308.14297

Cell response on laser-patterned Ti/Zr/Ti and Ti/Cu/Ti multi-layer systems

Suzana Petrović·Nevena Božinović·Vladimir Rajić·Danijela Stanisavljević Ninković·Danilo Kisić·Milena Stevanović·Emmanuel Stratakis
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Abstract

Arranged patterns obtained by ultrafast laser processing on the surface of Ti/Cu/Ti/Si and Ti/Zr/Ti/Si thin film systems are reported. Two differently designed multilayer thin films, Ti/Cu/Ti/Si and Ti/Zr/Ti/Si, were deposited on silicon by the ion sputtering method. The bioactive surfaces on these systems involve the formation of laser-induced periodic surface structures (LIPSS) in each of the laser-written lines of mesh patterns on 5x5 mm areas. The formation of nano- and micro-patterns with an ultra-thin oxide film on the surfaces was used to observe the effects of morphology and proliferation of the MRC-5 cell culture line. To determine whether Ti-based thin films have a toxic effect on living cells, an MTT assay was performed. The relative cytotoxic effect as a percentage of surviving cells showed that there was no difference in cell number between the Ti-based thin films and the control cells. There was also no difference in the viability of the MRC-5 cells, except for the Ti/Cu/Ti/Si system, where there was a slight 10% decrease in cell viability.

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Suzana Petrović, Nevena Božinović, Vladimir Rajić, Danijela Stanisavljević Ninković, Danilo Kisić, Milena Stevanović, Emmanuel Stratakis. 2023-08-28. Cell response on laser-patterned Ti/Zr/Ti and Ti/Cu/Ti multi-layer systems. https://doi.org/10.3390/coatings13061107

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