Below you find the complete list of Tier-1-projects since the start of the regular project application programme.
Simulating oxygen transport through membranes at various temperatures
- Promotor(s): Oriana De Vos
- Institution(s): UGent
- Domain(s): Biology , Physics
Membranes are found in every cell and organelle. Oxygen must be transported through the membrane in order to supply energy to that cell/organelle. But how does oxygen diffuse through the membrane? Does the presence of ordered rafts in membranes influence this process? This project aims to investigate these questions through simulations of three model membranes with varying degree of lipid saturation, and hence varying degree of ordering. The effect of temperature will be investigated by comparing oxygen diffusion at room temperature and body temperature, which will help towards the understanding of oxygen transport in ordered rafts.
Fluid to kinetic modeling of the magnetic island coalescence problem
- Promotor(s): Rony Keppens , Kirit Makwana , Bart Ripperda , Dimitrios Millas
- Institution(s): KU Leuven
- Domain(s): Astronomy and astrophysics
Magnetic reconnection is a ubiquitous phenomenon in laboratory, space and astrophysical plasmas. It affects the functioning of laboratory devices, as well as drives space weather events. Reconnection is a very difficult problem to simulate because it is driven by processes at scales of thousands of kilometers, whereas it occurs in an area of few hundred meters. It is also difficult because we do not have a single comprehensive numerical model to describe it. Therefore we have to use a variety of different codes to model this process. At KU Leuven we have a whole range of numerical tools to model this and we plan to make full use of this facility. We will do large simulations that will start from km scales going up to mm scales. This will help us understand the rate of reconnection and heating in realistic system sizes. This has important implications in understanding space weather and in fusion applications.
Adsorption energies of carbon nanotubes on bimetallic catalysts: impact for chirality-selective growth
- Promotor(s): Charlotte Vets
- Institution(s): UAntwerp
- Domain(s): Chemistry
Carbon nanotubes (CNTs) have great potential for application in electronic components. Their electronic properties, however, depend strongly on their chirality (i.e. their exact structure). Existing growth methods, unfortunately, all result in a mixture of different chiralities. Hence, we strive to unravel the growth mechanisms and the catalyst’s influence on the resulting chirality, and to develop a generic screening procedure, able to select suitable catalysts fast and cheap. The focus of the present project lies on the thermodynamic part of the screening. For CNTs with various chiralities and NiFe, NiGa and FeGa catalysts with various compositions, we therefore study the energies of systems of a CNT adsorbed on a catalyst.
Understanding the high-pressure behavior of a flexible nanoporous material
- Promotor(s): Jelle Wieme
- Institution(s): UGent
- Domain(s): Technology , Physics
Metal-organic frameworks (MOFs) are a class of nanoporous, crystalline materials consisting of inorganic moieties connected through organic linkers. Their diversity in chemical and physical properties, combined with the possibility to rationally design and synthesize them, makes MOFs a class of materials with many potential applications. A subclass of these materials – also known as flexible MOFs – displays a large flexibility when applying different thermodynamic stimuli such as temperature, pressure and guests. In this project, we will investigate such flexible MOFs and elucidate their experimentally observed behavior by performing simulations at the atomistic scale.
Electronic properties of 2D nitrogen-containing Covalent organic Frameworks from First-Principles Simulations
- Promotor(s): Arthur De Vos
- Institution(s): UGent
- Domain(s): Physics
Covalent Organic Frameworks (COFs) are a class of crystalline materials, which consist solely of organic building units. Their potential within catalysis is largely unexplored to date. COFs may be constructed in a versatile way, by varying the building units, the topology and by postfunctionalization with active metal complexes. Their intriguing electronic structure yields them very promising host materials for photocatalytic applications. In this proposal the electronic properties of 2D covalent COFs will be studied with the aim to electronically engineer the COF scaffolds towards applications in photocatalysis. The results of this research should improve substantially rational design of COFs with improved photocatalytic behavior.