Chiral Effects in Nanostructures, Metasurfaces, Metamaterials and Photonic Crystals. Optical Vortices in Plasmonic Nanostructures. Vortical Effects Underlying Metamaterial Topological Transitions and Nano-Fano Resonances. Chiral Nanostructures Fabrication by Twisted Light. Nanostructures for the Generation of Twisted Light. Probing Magnetic Plasmons with Vortex Electron Beams. Applications of Chirooptical and Vortical Effects for Nanoscale Energy Delivery, Biosensing and Spectroscopy.