Influence of a Femtosecond Laser in the Creation of Layers of Biocompatible Nanomayerial

The effect of femtosecond laser (FSL) radiation on aqueous dispersions of a biocompatible nanomaterial containing bovine serum albumin (BSA) and single-walled carbon nanotubes (SWCNT) has been studied. Laser radiation was placed in a linear chain of carbon nanotubes and their aggregates. In this case, such a structure was observed at low concentrations of nanotubes ≤ 0.01 wt.% SWCNTs and an intensity of ~ 5 kW/mm2 of laser radiation per pulse. At high concentrations of ~ 0.1 wt. % SWCNTs, the ordering of SWCNTs under the influence of FSL radiation is weakly expressed due to the interlacing of numerous nanotubes. However, in this case, the specific electrical conductivity of the layers obtained after the drying of aqueous dispersions of BSA/SWCNTs under the action of FSL radiation increased several times. The prepared layers of biocompatible nanomaterial BSA/SWCNT will be in demand when creating sensors of various types, for example, deformation, gases or moisture.