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Pátek, 20.09.2019 13:00

Václav Eigner (Oddělení strukturní analýzy)

Structural analysis at high pressure Vaclav Eigner Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic To understand the nature of crystal structure and non-covalent interactions we need to know the crystal structure at various conditions. The easiest condition to control is the temperature, but variations in pressure often lead to more interesting and previously unobserved solid phases. The ambient pressure phases often undergo significant changes with increasing pressure and substances in liquid state at the ambient conditions can be crystallized using the...

Úterý, 24.09.2019 15:00

Prokop Hapala (Department of Condensed Matter Theory, FZÚ AV ČR, v.v.i. and Department of Applied Physics, Aalto University Espoo, Finland)

Abstract: In recent decade Atomic Force Microscopy with tip functionalized by carbon monoxide (CO) provided unique tool to experimentally image sub-molecular details of individual organic molecules [1]. In principle it allows to map distribution of electron density and electrostatic potential, which is of great importance e.g. for on-surface chemistry. Direct interpretation of the images is however complicated by convolution of electric fields and strong relaxation of CO molecule causing severe image distortions. This problem can be partially overcome by simple mechanical...