1. Some properties of semiconductors : terminology -- 2. Structure and properties of silicon -- 3. Porous silicon : luminescence properties -- 4. Quantum dots -- 5. Synthesis, surface modification and characterization of nanosilicon -- 6. Thermal oxidation processes in nanosilicon powders -- 7. Thin films deposited from sol of silicon particles -- 8. Methods for investigating and controlling the structure and properties of nanosilicon -- 9. Methods for controlling nanosilicon particle size -- 10. New X-ray diffraction methods for analysis of the structure and morphology of nanocrystalline powders -- 11. Methods of femtosecond spectroscopy and time-resolved electron diffraction -- 12. Fluorescent labels based on silicon -- 13. Porous silicon as a photosensitizer of generation of singlet oxygen -- 14. Sunscreens -- 15. Polymer nanocomposites based on nanosilicon -- 16. Applications of nanosilicon in solar energy.