Design and build of unique experimental setup combining optical tweezers, spectroscopy, and opto-accoustic measurement possibilities. Design and build automatic setup for preparation of inorganic nanoparticles and nanocomposite carriers. Design and build of setup for isolation, separation, and visualization of exosomes. Performing of measurements of the sizes and Z-potentials of nanoparticles using Laser Analyser Z-sizer Nano ZS. Modification of photonic crystal fibers by polymers and nanocomposite coatings for tuning of spectral characteristics.