IJS kolokvij, sreda, 26. 11. 2025, ob 13:00, izr. prof. dr. Dominik J. Kubicki

[Martin Klanjsek]

Vabimo vas na 3. predavanje iz sklopa »Kolokviji na IJS« v akademskem letu 2025/26, ki bo v sredo, 26. novembra 2025, ob 13:00 v Veliki predavalnici Instituta »Jožef Stefan« na Jamovi cesti 39 v Ljubljani. Predavanje bo v angleščini. Na voljo bodo kava, pijača in prigrizki.

 

 

Novi pristopi k določanju atomske strukture naprednih materialov

 

izr. prof. dr. Dominik J. Kubicki

Univerza v Birminghamu, Birmingham, Velika Britanija

 

 

Določanje povezave med strukturo in lastnostmi na različnih dolžinskih skalah je ena ključnih zahtev za racionalno načrtovanje novih materialov. Medtem ko uklonske tehnike ponujajo vpogled v strukturo trdnih snovi na večjih dolžinskih skalah, pa so številne lastnosti določene z lokalno strukturo, do katere je mogoče dostopati le z ustreznimi tehnikami, kot sta popolno sipanje z analizo parske porazdelitvene funkcije in jedrska magnetna resonanca (NMR). V predavanju se bom osredotočil na NMR v trdni snovi z uporabo vrtenja pod magičnim kotom (MAS). Pokazal bom, kako nam visokotemperaturni eksperimenti z MAS NMR v območju med 300 K in 700 K omogočajo določitev stanja dopantov v modificiranem steklu ZIF-62 in kako lahko proučujemo površinsko sestavo kovinskih halogenidnih perovskitov, ko reagirajo z vlago v okolici. To sta dva sicer zelo zahtevna problema, ki pa ob elementni selektivnosti NMR postaneta razmeroma enostavna.

 

O predavatelju: Dominik J. Kubicki je izredni profesor na Fakulteti za kemijo Univerze v Birminghamu v Veliki Britaniji. Vodi skupino, katere raziskave se osredotočajo na nove materiale za trajnostne optoelektronske tehnologije. Je prejemnik projekta ERC za raziskovalce na začetku kariere, ki je posvečen določanju strukture sončnih celic iz kovinskih halogenidnih perovskitov na atomski ravni.

 

 

Napovednik predavanja in posnetke preteklih predavanj najdete na spletni strani »Kolokvijev na IJS«  <https://kolokviji.ijs.si/> https://kolokviji.ijs.si/, posnetke pa tudi posebej na  <https://video.arnes.si/?q=Kolokviji_IJS> https://video.arnes.si/?q=Kolokviji_IJS (zadnje štiri sezone) in  <http://videolectures.net/kolokviji_ijs> http://videolectures.net/kolokviji_ijs (starejši).

 

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We invite you to the 3rd lecture in the framework of »JSI Colloquia« in the academic year 2025/26, which will take place on Wednesday, November 26, 2025, at 1:00 PM in the main lecture hall of Jožef Stefan Institute, Jamova cesta 39 in Ljubljana. The lecture will be held in English. Coffee, drinks and snacks will be available.

 

 

New approaches to determining the atomic-level structure of advanced materials 

 

Assoc. Prof. Dr. Dominik J. Kubicki

University of Birmingham, Birmingham, United Kingdom

 

 

Determining the structure-property relationships at multiple length scales is one of the key requirements to enable rational design of new materials. While diffraction techniques offer insight into the long-range structure of solids, many properties are determined by local structure, which can only be accessed using the corresponding techniques, such as total scattering with pair distribution function analysis and nuclear magnetic resonance (NMR). In this lecture, I will focus on magic angle spinning (MAS) solid-state NMR. I will show how high-temperature MAS NMR experiments in the range between 300 K and 700 K enable us to determine the speciation of dopants in a modified ZIF-62 glass, and how we can study surface composition of metal halide perovskites as they react with ambient humidity. These are two very challenging problems rendered straightforward thanks to the element-specificity of NMR.

 

About the lecturer: Dominik J. Kubicki is an associate professor in the School of Chemistry at the University of Birmingham in United Kingdom. He leads a group, whose research focuses on new materials for sustainable optoelectronic technologies. He has received an ERC Starting Grant focusing on determination of atomic-level structure of metal halide perovskite solar cells.

 

 

The lecture trailer and recordings of past lectures can be found on the website of »JSI colloquia«  <https://kolokviji.ijs.si/> https://kolokviji.ijs.si/, and recordings specifically at  <https://video.arnes.si/en/?q=Kolokviji_IJS> https://video.arnes.si/en/?q=Kolokviji_IJS (last four seasons) and  <http://videolectures.net/kolokviji_ijs> http://videolectures.net/kolokviji_ijs (older).

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