The structures formed by applying suspensions of composite nanoparticles onto grating of an array of extended grooves formed using imprint nanolithography on the polymer surface were studied. Fluorinated graphene (FG)-coated V₂O₅ nanoparticles or graphene (G) : h-BN composite nanoparticles were deposited on the polymer using 2D printing. It has been shown that treatment of polymer grating with oxygen plasma, or additional sputtering and removal of a gold layer modify the surface properties and make it possible to organize various options for the assembly of nanoparticles on a structured polymer surface. Without treatment, the surface of the grating is hydrophobic and nanoparticles practically do not interact with it. Treatment with oxygen plasma led to the formation of a layer of nanoparticles over the entire surface of the grating, primarily filling the nanogrooves. Long-term activation was achieved by sputtering gold followed by mechanical removal using an adhesive transfer method. In the case of long-term surface activation, nanoparticles are located exclusively on the upper part of the polymer strips, practically without reducing the depth of the grating relief. FG : V₂O₅ particles are located in the middle of the polymer strips (nanocrests), while G : h-BN formed two 1D chains of nanoparticles along the edges of the ridge. Keywords: imprint lithography, polymer grating, long-term activation, nanoparticles, 1D chains, electrical properties.

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