Project acronym 123STABLE
Project Towards Nanostructured Electrocatalysts with Superior Stability
Researcher (PI) Nejc HODNIK
Host Institution (HI) KEMIJSKI INSTITUT
Country Slovenia
Call Details Starting Grant (StG), PE4, ERC-2019-STG
Summary In the last decades, significant progress has been made on understanding and controlling solid/liquid electrochemical interfaces at atomic levels. As the principles guiding the activity of electrochemical reactions are quite well established (structure-activity relationships), the fundamentals of stability are still poorly understood (structure-stability relationships). 123STABLE proposes to employ (1) identical location, (2) online monitoring and (3) modeling of noble metals based nanoparticles changes with the state-of-the-art electron microscopy equipment and online dissolution and evolution analytics using electrochemical flow cell coupled to online mass spectrometers. Projects unique methodology approach with picogram sensitivity levels, in combination with sub-atomic scale microscopy insights and simulations, promises novel atomistic insights into the corrosion and reconstruction of noble metals in electrochemical environments. This unique approach is based on observations of the same nanoparticles before and after electrochemical treatment where weak and stable atomic features and events can be recognized, followed, understood and finally utilized. Upon (1) doping, (2) decoration and/or (3) other synthetic modification of nanoparticles like a change in size and shape further stabilization is envisioned. For instance, blockage of nanoparticle vulnerable defected sites like steps or kinks by more noble metal could stop or significantly slow down their degradation.
The 123STABLE project will feature platinum- and iridium-based nanostructures as a model system to introduce a unique “123” approach, as they still possess the best electrocatalytic properties for the future electrification of society through the Hydrogen economy. However, their electrochemical stability is still not sufficient. Coupled with the fact that their supply is hindered by extremely scarce, rare and uneven geological distribution, the increase in their stability is of immense importance.
Summary
In the last decades, significant progress has been made on understanding and controlling solid/liquid electrochemical interfaces at atomic levels. As the principles guiding the activity of electrochemical reactions are quite well established (structure-activity relationships), the fundamentals of stability are still poorly understood (structure-stability relationships). 123STABLE proposes to employ (1) identical location, (2) online monitoring and (3) modeling of noble metals based nanoparticles changes with the state-of-the-art electron microscopy equipment and online dissolution and evolution analytics using electrochemical flow cell coupled to online mass spectrometers. Projects unique methodology approach with picogram sensitivity levels, in combination with sub-atomic scale microscopy insights and simulations, promises novel atomistic insights into the corrosion and reconstruction of noble metals in electrochemical environments. This unique approach is based on observations of the same nanoparticles before and after electrochemical treatment where weak and stable atomic features and events can be recognized, followed, understood and finally utilized. Upon (1) doping, (2) decoration and/or (3) other synthetic modification of nanoparticles like a change in size and shape further stabilization is envisioned. For instance, blockage of nanoparticle vulnerable defected sites like steps or kinks by more noble metal could stop or significantly slow down their degradation.
The 123STABLE project will feature platinum- and iridium-based nanostructures as a model system to introduce a unique “123” approach, as they still possess the best electrocatalytic properties for the future electrification of society through the Hydrogen economy. However, their electrochemical stability is still not sufficient. Coupled with the fact that their supply is hindered by extremely scarce, rare and uneven geological distribution, the increase in their stability is of immense importance.
Max ERC Funding
1 496 750 €
Duration
Start date: 2020-01-01, End date: 2024-12-31
Project acronym Cell-Lasers
Project Intracellular lasers: Coupling of optical resonances with biological processes
Researcher (PI) Matjaz HUMAR
Host Institution (HI) INSTITUT JOZEF STEFAN
Country Slovenia
Call Details Starting Grant (StG), PE3, ERC-2019-STG
Summary Recently, micro-sized lasers have been integrated into biological systems including cells and tissues. Currently the most frequently used techniques to study complex processes in live cells employ fluorescent probes. However, fluorescent probes have several disadvantages including photobleaching, sensitivity to environmental factors, potential phototoxicity and broad emission spectrum, which limits their sensitivity, multiplexing ability and imaging capabilities in biological tissues. The transition from detecting laser emission from bio-integrated lasers instead of fluorescence represents a paradigm shift. Due to narrow emission linewidth, high coherence, large intensity and highly nonlinear output from lasers, they open huge opportunities in ultrasensitive sensing, spectral multiplexing and microscopy. The applicant has recently for the first time demonstrated a laser completely embedded inside a live human cell. However, to date it has only been demonstrated that laser light can be generated within the cell, but not how is the laser output coupled to the biophysical and biochemical processes inside cells. The goal of Cell-Lasers is to study these intimate interactions including forces acting within cells, properties of natural cavities in lipid droplets and the intracellular chemical environment. Since the spectral positions of laser lines do not change with propagation through scattering and absorbing media, the cell lasers will enable multiplexed sensing, tracking and localization of cells embedded deep inside tissues. In the long term Cell-Lasers aims to transform the bio-integrated lasers from being a pure scientific curiosity into powerful tool for the study of biophysical and biochemical processes taking place on a single cell level.
Summary
Recently, micro-sized lasers have been integrated into biological systems including cells and tissues. Currently the most frequently used techniques to study complex processes in live cells employ fluorescent probes. However, fluorescent probes have several disadvantages including photobleaching, sensitivity to environmental factors, potential phototoxicity and broad emission spectrum, which limits their sensitivity, multiplexing ability and imaging capabilities in biological tissues. The transition from detecting laser emission from bio-integrated lasers instead of fluorescence represents a paradigm shift. Due to narrow emission linewidth, high coherence, large intensity and highly nonlinear output from lasers, they open huge opportunities in ultrasensitive sensing, spectral multiplexing and microscopy. The applicant has recently for the first time demonstrated a laser completely embedded inside a live human cell. However, to date it has only been demonstrated that laser light can be generated within the cell, but not how is the laser output coupled to the biophysical and biochemical processes inside cells. The goal of Cell-Lasers is to study these intimate interactions including forces acting within cells, properties of natural cavities in lipid droplets and the intracellular chemical environment. Since the spectral positions of laser lines do not change with propagation through scattering and absorbing media, the cell lasers will enable multiplexed sensing, tracking and localization of cells embedded deep inside tissues. In the long term Cell-Lasers aims to transform the bio-integrated lasers from being a pure scientific curiosity into powerful tool for the study of biophysical and biochemical processes taking place on a single cell level.
Max ERC Funding
1 492 090 €
Duration
Start date: 2020-05-01, End date: 2025-04-30
Project acronym HiPeR-F
Project Challenging the Oxidation-State Limitations of the Periodic Table via High-Pressure Fluorine Chemistry
Researcher (PI) Matic LOZINSEK
Host Institution (HI) INSTITUT JOZEF STEFAN
Country Slovenia
Call Details Starting Grant (StG), PE4, ERC-2020-STG
Summary The HiPeR-F project aims to establish a new frontier research direction – high-pressure fluorine chemistry, by method development and a merger of two highly specialised and experimentally demanding fields, namely high-pressure experiments in diamond anvil cell and inorganic fluorine chemistry. Fluorine under high pressure represents a breakthrough testing environment for challenging the oxidation-state limitations of the elements in the periodic table. Tantalizing theoretical indications have been provided recently for the existence of compounds with elements displaying unusual and exotic formal oxidation states, and even the possibility of the inner electronic shell involvement in chemical bonding. However, extreme conditions of very high pressure (in GPa range) and extreme chemical reactivity (fluorine) are required and this is currently limited to in silico investigations. Experiment lags substantially behind the theory. The experimental verification of exciting computational predictions is of paramount importance and will be pursued in HiPeR-F. Targeted compounds with elements in exotic oxidation states are at the edge of existence and are eminently difficult to synthesise, but are also of significant interest to the scientific community at large. Novel compounds obtained in high-pressure experiments could exhibit unusual electronic structures and thus exotic physical properties. High-pressure fluorochemistry thus represents a genuine new direction in modern chemistry with exciting possibilities and would enable a frontier research that would significantly advance our understanding of many facets of chemistry.
Summary
The HiPeR-F project aims to establish a new frontier research direction – high-pressure fluorine chemistry, by method development and a merger of two highly specialised and experimentally demanding fields, namely high-pressure experiments in diamond anvil cell and inorganic fluorine chemistry. Fluorine under high pressure represents a breakthrough testing environment for challenging the oxidation-state limitations of the elements in the periodic table. Tantalizing theoretical indications have been provided recently for the existence of compounds with elements displaying unusual and exotic formal oxidation states, and even the possibility of the inner electronic shell involvement in chemical bonding. However, extreme conditions of very high pressure (in GPa range) and extreme chemical reactivity (fluorine) are required and this is currently limited to in silico investigations. Experiment lags substantially behind the theory. The experimental verification of exciting computational predictions is of paramount importance and will be pursued in HiPeR-F. Targeted compounds with elements in exotic oxidation states are at the edge of existence and are eminently difficult to synthesise, but are also of significant interest to the scientific community at large. Novel compounds obtained in high-pressure experiments could exhibit unusual electronic structures and thus exotic physical properties. High-pressure fluorochemistry thus represents a genuine new direction in modern chemistry with exciting possibilities and would enable a frontier research that would significantly advance our understanding of many facets of chemistry.
Max ERC Funding
2 368 135 €
Duration
Start date: 2021-02-01, End date: 2026-01-31
Project acronym MODES
Project Modal analysis of atmospheric balance, predictability and climate
Researcher (PI) Nedjeljka Zagar
Host Institution (HI) UNIVERZA V LJUBLJANI
Country Slovenia
Call Details Starting Grant (StG), PE10, ERC-2011-StG_20101014
Summary Despite large progress in modelling of atmospheric processes and computing capabilities and concentrated efforts to increase complexity of the atmospheric models, the assessment of accuracy of natural atmospheric climate variability, its predictability and interaction with anthropogenic influences is far from well understood. This project aims to advance scientific understanding of dynamical properties of the atmosphere and climate systems over many spatial and temporal scales.
It is proposed to study atmospheric balance and predictability in terms of the energy percentage which is associated with various types of motions, balanced or Rossby-type of motions and unbalanced or inertio-gravity motions. This representation of the atmosphere is called the normal-mode function representation and it is a heart of methodology proposed in this project.
The projects is built on theoretical foundation set in 1970s at the National Center for Atmospheric Research in USA and with the support of original developers it will apply normal-mode function representation tool to issues for which it could not have been reliably applied earlier. The project relies on accomplishments of the proposal’s PI in weather and data assimilation modeling which this project will extend to new research areas.
The project will quantify balance in analysis datasets and ensemble forecasting systems and use the results as a starting point for climate model assessment for their ability to represent the present climate and possible changes of balance in model simulations of future climate scenarios. Results will allow dynamical classification of climate models based on their balance properties. Predictability issues will be studied by comparing temporal variability of balance in the forecasts in terms of various spatial scales. An important project outcome will be a free-access, user-friendly tool for carrying out a physically-based analysis of weather and climate model outputs.
Summary
Despite large progress in modelling of atmospheric processes and computing capabilities and concentrated efforts to increase complexity of the atmospheric models, the assessment of accuracy of natural atmospheric climate variability, its predictability and interaction with anthropogenic influences is far from well understood. This project aims to advance scientific understanding of dynamical properties of the atmosphere and climate systems over many spatial and temporal scales.
It is proposed to study atmospheric balance and predictability in terms of the energy percentage which is associated with various types of motions, balanced or Rossby-type of motions and unbalanced or inertio-gravity motions. This representation of the atmosphere is called the normal-mode function representation and it is a heart of methodology proposed in this project.
The projects is built on theoretical foundation set in 1970s at the National Center for Atmospheric Research in USA and with the support of original developers it will apply normal-mode function representation tool to issues for which it could not have been reliably applied earlier. The project relies on accomplishments of the proposal’s PI in weather and data assimilation modeling which this project will extend to new research areas.
The project will quantify balance in analysis datasets and ensemble forecasting systems and use the results as a starting point for climate model assessment for their ability to represent the present climate and possible changes of balance in model simulations of future climate scenarios. Results will allow dynamical classification of climate models based on their balance properties. Predictability issues will be studied by comparing temporal variability of balance in the forecasts in terms of various spatial scales. An important project outcome will be a free-access, user-friendly tool for carrying out a physically-based analysis of weather and climate model outputs.
Max ERC Funding
495 482 €
Duration
Start date: 2011-12-01, End date: 2016-11-30
Project acronym SUPERCOOL
Project Superelastic Porous Structures for Efficient Elastocaloric Cooling
Researcher (PI) Jaka TUsEK
Host Institution (HI) UNIVERZA V LJUBLJANI
Country Slovenia
Call Details Starting Grant (StG), PE8, ERC-2018-STG
Summary Cooling, refrigeration and air-conditioning are crucial for our modern society. In the last decade, the global demands for cooling are growing exponentially. The standard refrigeration technology, based on vapour compression, is old, inefficient and environmentally harmful. In the SUPERCOOL project we will exploit the potential of elastocaloric cooling, probably the most promising solid-state refrigeration technology, which utilizes the latent heat associated with the martensitic transformation in superelastic shape-memory alloys. We have already demonstrated a novel concept of utilizing the elastocaloric effect (eCE) by introducing a superelastic porous structure in an elastocaloric regenerative thermodynamic cycle. Our preliminary results, recently published in Nature Energy, show the tremendous potential of such a system. However, two fundamental challenges remain. First, we need to create a geometry of the superelastic porous structure (elastocaloric regenerator) to ensure sufficient fatigue life, a large eCE and rapid heat transfer. Second, we must have a driver mechanism that can effectively utilize the work released during the unloading of the elastocaloric regenerator. To succeed I am proposing a unique approach to design advanced elastocaloric regenerators with complex structures together with a driver mechanism with the force-recovery principle. We will employ a systematic characterization and bottom-up linking of all three crucial aspects of the elastocaloric regenerator, i.e., the thermo-hydraulic properties, the stability and the structural fatigue, together with a new solution for force recovery in effective drivers. Based on these theoretical, numerical and experimental results we will combine both key elements of our novel elastocaloric concept into a prototype device, which could be the first major breakthrough in cooling technologies for 100 years, providing greater efficiency and reduced levels of pollution, by applying a solid-state refrigerant.
Summary
Cooling, refrigeration and air-conditioning are crucial for our modern society. In the last decade, the global demands for cooling are growing exponentially. The standard refrigeration technology, based on vapour compression, is old, inefficient and environmentally harmful. In the SUPERCOOL project we will exploit the potential of elastocaloric cooling, probably the most promising solid-state refrigeration technology, which utilizes the latent heat associated with the martensitic transformation in superelastic shape-memory alloys. We have already demonstrated a novel concept of utilizing the elastocaloric effect (eCE) by introducing a superelastic porous structure in an elastocaloric regenerative thermodynamic cycle. Our preliminary results, recently published in Nature Energy, show the tremendous potential of such a system. However, two fundamental challenges remain. First, we need to create a geometry of the superelastic porous structure (elastocaloric regenerator) to ensure sufficient fatigue life, a large eCE and rapid heat transfer. Second, we must have a driver mechanism that can effectively utilize the work released during the unloading of the elastocaloric regenerator. To succeed I am proposing a unique approach to design advanced elastocaloric regenerators with complex structures together with a driver mechanism with the force-recovery principle. We will employ a systematic characterization and bottom-up linking of all three crucial aspects of the elastocaloric regenerator, i.e., the thermo-hydraulic properties, the stability and the structural fatigue, together with a new solution for force recovery in effective drivers. Based on these theoretical, numerical and experimental results we will combine both key elements of our novel elastocaloric concept into a prototype device, which could be the first major breakthrough in cooling technologies for 100 years, providing greater efficiency and reduced levels of pollution, by applying a solid-state refrigerant.
Max ERC Funding
1 359 375 €
Duration
Start date: 2019-01-01, End date: 2023-12-31
