Seminarium Fizyki Ciała Stałego

The tools commonly used in crystallography for diffractometric studies of crystalline materials are of limited use for studying the atomic structure of nanomaterials. Due to the large fraction of atoms located at the surface a nanocrystal must not be considered as a small single crystal. The need for a new method of structural studies of nanocrystalline materials, and creation of a sub-section of Crystallography named Nano-Crystallography is presented and justified. The essence of the new methodology is the identification of the surface and non-uniform bulk structure of nanoparticles based on experimentally measured atomic Pair Distribution Function.Using experimental large Q diffraction data and molecular dynamics simulations the shape, the surface structure and lattice deformation in the interior of nano-size grains were identified and quantitatively described. Examples of results on CdSe quantum dots, diamond and SiC nano-crystals will be presented.UwagaSeminarium w trybie HybrydowymFaculty of Physics room 0.06link to remote mode:https://zoom.us/j/7218838148szczegóły patrz instrukcja :instrukcja: (pdf file)AttentionThe seminar in the Hybrid modeFaculty of Physics room 0.06for details see instruction :instruction: (pdf file)