493 search results for “critical metals” in the Public website
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Economies of Destruction
How the systematic destruction of valuables created value in Bronze Age Europe, c. 2300-500 BC
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Translational Symmetry Breaking in Holographic Strange Metals
PhD defence
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The added risk of size
What are the risks of nanoparticles?
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PUMA (Prospecting the Urban Mines of Amsterdam)
PUMA aims at composing a geological map of the urban mine of Amsterdam for a selection of metals. Where are main deposits of copper, iron and aluminium located, when will they become available for secondary production, in what state and shape are they?
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Frontiers in surface scattering simulations
Theorists have recently made substantial progress in simulating reactive molecule-metal surface scattering but still face major challenges. The grand challenge is to develop an approach that enables accurate predictive calculations of reactions involving electronically excited states with potential…
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Surface-structure dependencies in catalytic reactions
Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink
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Modeling energy conversion dynamics at interfaces
Chemical reactions go hand-in-hand with an energy exchange with the environment in which they take place. Surfaces offer a variety of energy dissipation channels, constituted by the nuclear and electronic degrees of freedom of the atoms at the interface. Aiming at an improved future harvesting of energy,…
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Semi-empirical approach to the simulation of molecule-surface reaction dynamics
Catalysis is of extreme relevance in the production of everyday materials and plays a central role in many aspects of our life.
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Effect of Nanoparticles on Microbial Catabolism and Community Structure using Biolog techniques
1. To what extent do metallic NPs added to soil extractions change the activity, abundance, or community composition of microbes? 2. How do the effects of metallic NPs on soil microbes differ from the effects of the ions shedding from corresponding NPs?
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Theoretical Chemistry
The main goal of the THEOR CHEM group, headed by Prof. Geert-Jan Kroes, is to characterize, and to accurately predict the outcome of chemical reactions at gas-solid and liquid-solid interfaces. Here the solid surface is typically a metal or an ice surface. These goals are important to many areas in…
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Charlemagne's Workshops
An Investigation into the role of copper-alloy craft production in the early medieval economy of northwest Europe.
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Image and Identity in Chinese Historic Houses
How and to what extent the historic house (re-)constructs identity through image-making in China.
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Analysis of 2,000 French newspapers reveals criticism of Third Republic
‘Politicians act only in their own interests. The common man does not interest them at all.’ And, ‘The debate in parliament was a sorry sight and demonstrated incompetence.’ These are two pieces of criticism that you might read in tomorrow’s newspaper. But they were actually in the papers at the time…
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Group Discussions
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Shivant Jhagroe
Faculty Governance and Global Affairs
s.s.jhagroe@fgga.leidenuniv.nl | +31 70 800 9904
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Light-activatable ruthenium-based anticancer prodrugs
Can light-activatable ruthenium compounds be used as a more selective anticancer treatment?
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SiTaSol
What are the life-cycle environmental impacts and risks to human health and ecosystems of a III-V/Si PV system? How can these be expected to change when the system is deployed at industrial scale? What are the most favourable recycling scenarios?
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Lithic Technology, Social Agency and Cultural Interaction in the Bronze Age Aegean
LiTechAe: Percussive stone tools related to stone masonry techniques seen through experimentation and use-wear analysis.
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Bachelor Projects
Bachelor projects are available in
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Insights from scanning tunneling microscopy experiments into correlated electron systems
This thesis presents insights from our study of various correlated electron systems with a scanning tunneling microscope (STM). In ordinary metals, electron-electron interactions exist, but get substantially screened due to the sheer number of electrons.
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A completely normal practice
In Bronze Age Europe, an enormous amount of metalwork was buried in the ground and never retrieved.
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Accurate Probabilities for Highly Activated Reaction of Polyatomic Molecules on Surfaces Using a High-Dimensional Neural Network Potential: CHD3
An accurate description of reactive scattering of molecules on metal surfaces often requires the modeling of energy transfer between the molecule and the surface phonons. Although ab initio molecular dynamics (AIMD) can describe this energy transfer, AIMD is at present untractable for reactions with…
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Nanoparticles
Leiden University has developed a radically different method for large scale production of diverse nanoparticles and their alloys.
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Magnetism and magnetization dynamics in thin film ferromagnets
Promotores: Prof.dr. J. Aarts, Prof.dr. J.M. van Ruitenbeek
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Design, synthesis and application of paramagnetic probes for protein structure studies
The main subject of this thesis is the design and synthesis of paramagnetic molecules for protein studies with NMR and EPR spectroscopy.
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Sacrificial Landscapes
Cultural biographies of persons, objects and 'natural' places in the Bronze Age of the Southern Netherlands, c. 2300-600 BC.
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Unconventional fabrication of 2D nanostructures and graphene edges
In this work, we illustrate unconventional approaches towards the fabrication of edge functionalized graphene nanostructures and bidimensional architectures in polymeric and metallic supports, with an outlook towards molecular sensing devices.
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X-ray spectroscopy of merging galaxy clusters
This thesis focuses on the X-ray spectral analysis of merging galaxy clusters and the plasma code development for future high-resolution X-ray spectroscopy observations.
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Ab Initio Molecular Dynamics Calculations versus Quantum-State-Resolved Experiments on CHD3 + Pt(111): New Insights into a Prototypical Gas–Surface
The dissociative chemisorption of methane on metal surfaces is of fundamental and practical interest, being a rate-limiting step in the steam reforming process. The reaction is best modeled with quantum dynamics calculations, but these are currently not guaranteed to produce accurate results because…
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Highly Accurate Simulations and Benchmarking of Molecule-Surface Reactions
Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.
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Artificial metallo-proteins for photocatalytic water splitting: stability and activity in artificial photosynthesis
Climate change is one of the largest challenges faced by humanity. To combat this research into alternatives to fossil fuels is ongoing. Dihydrogen is considered a good alternative fuel, since its burning only forms water.
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Chemical reactivity of O2, CO and CO2 on Cu surfaces
Despite the history of studies on methanol formation from CO2, the dominant elementary reaction steps that constitute the chemical mechanism for this catalyzed process are not determined.
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Electrons found to flow like water
Science Magazine has published three back-to-back papers on an important discovery in solid state physics. Leiden physicist Jan Zaanen wrote a Perspective article on the subject in the same issue of 4 March.
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Labour standards clause EU-South Korea Free Trade Agreement critically assessed
Giovanni Gruni publishes a peer reviewed paper in the Korean Journal of international and Comparative Law.
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by Minister Dijkgraaf at Leiden University: ‘When knowledge becomes critical’
On Friday 11 March (16.00 hrs.) Minister Dijkgraaf (Education, Culture and Science) will give a speech at Leiden University entitled ‘When knowledge becomes critical’. In the speech, he will address several critical challenges in science and society. The livestream will be open to all.
- Jan van Ruitenbeek Lab - Atomic and Molecular Conductors
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Milan Allan Lab - Understanding Quantum Matter
We are a dynamic research group at the Leiden Institute of Physics. Our aim is to explore and understand quantum materials, including strange metals, high-temperature superconductors, and quantum critical electron matter.
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date! MAKING MATTERS Symposium 2020: Collective Material Practices in Critical Times
Join us at the second edition of the Making Matters symposium, which will take place on Friday 20 and Saturday 21 November 2020 at Het Nieuwe Instituut in Rotterdam and online.
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The evolution of Chinese industrial CO2 emissions 2000–2050: A review and meta-analysis of historical drivers, projections and policy goals
The emissions of the Chinese industrial sector alone comprise 24.1% of global emissions (7.8 GtCyr−1 in 2015). This makes Chinese industrial emissions of unique national and international relevance in climate policy. This study reports a literature survey that quantitatively describes the evolution…
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Pushing the envelope of nuclear magnetic resonance spectroscopy for paramagnetic systems
A network combining 9 academic research groups and 4 collaborating industrial companies will train the next generation of PhD students and post-doctoral researchers, in developing and applying novel experimental and theoretical methods in the NMR spectroscopy of systems containing paramagnetic metals.…
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Adsorption and catalysis on Pt and Pd monolayer-modified Pt single crystal electrodes
The focus throughout this thesis will be on gathering fundamental studies of the detailed structure and composition of the electrode/electrolyte interface effect on the rate and mechanism of key electrocatalytic reactions.
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Teaching
Research training projects in the MCBIM group - Bachelor and master students of all chemistry related studies are more than welcome to take part in our research activities. We have various research projects, all in one way or another involving transition metal ions. Daily supervision in the laboratory…
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Photo-activation of ruthenium-decorated upconverting nanoparticles
Metal-based prodrugs based on ruthenium(II) polypyridyl complexes have proven to be very suitable for application in both photodynamic therapy (PDT) and photo-activated chemotherapy (PACT).
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Criticism from Dutch civil servants about the Government's stance on war in Middle East
Two open letters are currently circulating among civil servants in the Netherlands calling for the Dutch government to take a different stance towards Israel. Wim Voermans, Professor of Constitutional and Administrative Law in Leiden, says in a national radio broadcast that this is an unusual and unique…
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Fighting tumours with light
Chemotherapy that does nothing until you irradiate it with light. Sylvestre Bonnet receives a Vici grant of 1.5 million euros for the development of this treatment. The Leiden chemist wants to build a new molecule to fight tumours that are at the time still difficult to treat.
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Exposure and health Assessment of Persistent Organic Pollutants (POPs) at e-waste recycling site among workers in the informal sector in Nigeria
Do e-waste workers display enhanced effects of adverse health effects due to informal e-waste processing in Nigeria? Is there a difference between the health outcomes of the exposed and the control groups? Are there difference in health effects within and between job groups (collectors, dismantlers,…
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Gerrard Boot on criticism of bridging measure for self-employed
The Dutch temporary bridging measure for self-employed professionals (known as Tozo) was set up to help Dutch self-employed professionals who are experiencing financial difficulties due to the Covid-19 pandemic. Last week, the ombudsman announced an investigation into the scheme for the self-employed.…
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The globalisation of language in popular music lyrics: A critical approach.
On 7 March, Carlos Roos (lecturer, philosopher, researcher) gave a talk about popular music at Utrecht University, organized by the education committee of Study Association Hucbald (Musicology at Utrecht University).
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On the Emergence of the Energy Transition
The energy system is at the heart of two of the greatest challenges of the 21st century: decreasing CO2 emissions to meet the ambitions of the Paris agreement while fulfilling the growing energy demand associated with the economic aspirations of a growing world population.
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Alumni
Former PhD, Bachelor and Master students of the Van Exter Lab