Fyzikální ústav Akademie věd ČR

Semináře a workshopy oddělení 26

Seminář / Úterý, 04.10.2016 10:00

The past decade has borne witness to the rapid development of a new field of theoretical and experimental condensed matter physics commonly referred to as “topological insulators”. I will briefly discuss some of the concepts that motivate these so-called topological states of matter, before presenting some of our work on two of these bismuth based materials. 

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Seminář / Úterý, 11.10.2016 10:00

TiO2 is a prototypical metal oxide used in many applications such as photocatalysis, photoelectrochemical solar cells, and transparent conducting oxides. Two forms of TiO2 are used industrially – rutile and anatase. Electron transfer between substrate and adsorbed species is a key step in heterogeneous catalysis and photocatalysis. I will focus on activating adsorbed O2 molecules via an electron transfer from the anatase and rutile TiO2 substrates. O2 molecules are inert, mainly due to the triplet spin configuration. 

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Seminář / Úterý, 18.10.2016 10:00 - 11:00

2D-layers, like graphene or a monolayer of hexagonal boron nitride (h-BN), enable the creation of new materials, unforeseen reaction pathways or striking confinement effects. Three examples for this statement are given. (i) Room temperature deposition on a 2D-layer moiré with an Ir(111) substrate results in the formation of a regular array of clusters with a narrow size distribution and high thermal stability. Such arrays may be of great use for applications in nanocatalysis and nanomagentism. Here we will specifically discuss the formation of a novel carbon cluster / graphene compound. 

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