METHOD FOR LASER-INDUCED PRODUCTION OF CORE-SHELL NANOPARTICLES IN POLYMER MATRICES Russian patent published in 2022 - IPC B82B3/00 

FIELD: nanotechnology.

SUBSTANCE: invention relates to nanotechnology, namely to the field of creating new nanocomposite materials containing nanoparticles of the core-shell type, and can be used for numerous applications in photonics, electronics and biomedicine. In the developed method, metal nanoparticles are located in the thickness of the polymer matrix, heating is carried out by picosecond laser pulses with a frequency close to the metal plasmon resonance frequency, which leads to thermally activated decomposition of dissolved precursor molecules and the formation of particles having a high affinity for the aforementioned metal and forming a shell around the nanoparticle of this metal. In this case, the polymer matrix is heated to a temperature that ensures its highly elastic state, due to which diffusion of precursor molecules occurs in the time intervals between laser pulses.

EFFECT: method makes it possible to create nanoparticles of the core-shell type, for example, metal/metal or metal/semiconductor, which are located inside the polymer matrix.

6 cl, 2 dg