1,145 zoekresultaten voor “lion africa” in de Publieke website
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Prijzen en Subsidies 2019
Een overzicht van awards en prijzen die in 2019 zijn toegekend aan onze medewerkers en studenten, maar ook bijzondere benoemingen aan de Universiteit Leiden en andere instellingen.
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Onderwijs
Het Leids Instituut voor onderzoek in de Natuurkunde (LION) biedt een natuurkundeopleiding op Bachelor en Masterniveau.
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Lianne van der Meer -
Luc Wigbout -
Colloquia/Lezingen
Het LION organiseert drie doorlopende lezingenreeksen
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One million spins as study tools and study objects
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- Contact
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Oratie: ‘Zie het licht’
Natuurkundige Martin van Exter werkt met licht op nanoschaal, en bevindt zich daardoor aan het front van het onderzoek naar de quantumcomputer. Maar als opleidingsdirecteur heeft hij ook een visie op natuurkunde-onderwijs. In zijn oratie belichtte hij beide kanten van deze medaille.
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Strategic Task Forces
Onze medewerkers en studenten maken deel uit van de taskforces van Una Europa. Deze taskforces vertalen de kernthema’s van Una Europa naar concrete acties.
- publicaties
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Eritrees regime verhandelt eigen burgers in miljardenindustrie van mensensmokkel
De mensenhandel van Eritrese vluchtelingen is een booming business waarin miljarden worden verdiend met het smokkelen van mensen, maar ook door bedreiging, gijzelingen en zelfs marteling. Moderne communicatiemiddelen zoals geld overmaken via mobiele telefoons spelen een vitale rol hierin, concluderen…
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Prijzen en Subsidies 2020
Een overzicht van awards en prijzen die in 2020 zijn toegekend aan onze medewerkers en studenten, maar ook bijzondere benoemingen aan de Universiteit Leiden en andere instellingen.
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Quantum critical metals at vanishing fermion flavor number
Quantum critical metals at vanishing fermion flavor number.
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Stimulated Raman Adiabatic Passage in Optomechanics
In the thesis we demonstrated an 85% state transfer efficiency between two mechanical modes coupled to a common optical mode via stimulated Raman adiabatic passage (STIRAP) in the classical regime. We also showed possibilities to manipulate quantum states of the mechanical modes via STIRAP.
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Integer and fractional quantum hall effects in lattice magnets
Promotor: Prof.dr.ir. J.W.M. Hilgenkamp, Prof.dr. J. van den Brink
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Novel system-inspired model-based quantum machine learning algorithm for prediction and generation of High-Energy Physics data
De huidige en toekomstige quantumcomputers vormen dezelfde uitdaging als de laser in zijn begindagen. In theorie werd voorspeld dat de laser een bron van zeer speciaal, zeer krachtig licht zou zijn. Maar in die tijd waren er geen duidelijke toepassingen voor. Critici van het idee noemden het een probleem…
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Charge transport properties of Ru-complex molecules: the influence of humidity
I will give a general introduction to the field of molecular electronics, its history, methods and challenges. I will also introduce the subject of my investigation and provide a brief outlook to the remainder of our thesis.
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Anyonic, cosmic, and chaotic: three faces of Majorana fermions
In my thesis I study Majorana fermions from three different perspectives. The first one corresponds to non-interacting Majorana fermions that, however, pose non-trivial topological properties. The second one corresponds to strongly interacting Majoranas and the third to relic neutrinos. No one knows…
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Oratie: De blinde microscoop
De biomedische wetenschap heeft een steeds grotere behoefte aan beeldmateriaal van biologisch materiaal op het niveau van cellen en eiwitten. Tjerk Oosterkamp, hoogleraar Experimentele natuurkunde, is gespecialiseerd in het ontwikkelen en gebruiken van tastmicroscopen om biologisch materiaal te bestuderen.…
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Probing quantum materials with novel scanning tunneling microscopy techniques
This thesis described the development of novel scanning tunneling microscopy techniques to investigate strongly correlated electronic states in quantum matter.
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Verdwijning Afrikaanse savanne desastreus voor leeuwen
Het oppervlak savanne in West- en Centraal-Afrika neemt snel af, met desastreuze gevolgen voor de leeuwenpopulaties die hier hun leefgebied hebben. Zonder beschermingsmaatregelen zijn er over tien jaar in dit deel van Afrika geen leeuwen meer. Journal of Biodiversity and Conservation, 4 december 201…
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On periodically driven quantum systems
Promotor: C. W. J. Beenakker, Co-promotor: J. K. Asboth
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Optical cavities and quantum emitters
Optical cavities are useful tools to enhance the interaction between light and matter, which is important to make good quantum emitters. However, it turns out that the cavities themselves (without any quantum emitters) are already interesting objects to study.
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Numerical exploration of statistical physics
In this thesis, we examine various systems through the lens of several numerical methods.
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Transmission electron microscopy on live catalysts
The dissertation describes TEM experiments on heterogeneous catalysts.
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Towards thermo- and superlubricity on the macroscopic scale: from nanostructure to graphene and graphite lubrication
The thesis describes experimental steps towards reduction of friction on the macroscopic scale by scenarios of thermo- and superlubricity well-known on the nanoscale.
- Universiteit Leiden
- Tumult 1974-2024 (najaar/autumn 2024)
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Het continent Afrika in 2023 (voorjaar 2023)
In samenwerking met het Afrika-Studiecentrum Leiden.
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Towards superconducting spintronics with RuO2 and CrO2 nanowires
CrO2, a half-metal ferromagnet, has shown great promise for superconducting spintronics applications for nearly two decades.
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Functional fluorescent materials and migration dynamics of neural progenitor cells
In this thesis, time-lapse fluorescent microscopy plays a pivotal role in investigating functional materials within living cells as well as the migratory behaviour of neural progenitor cells.
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On quantum transport in flat-band materials
The studies in this thesis are focused on the physical effects in the flat band materials. The results contain the discovery of strong enhancement of RKKY spin-spin interactions with specific geometric arrangement and dynamical generation of excitonic order parameter with high magnitude.
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Signatures of Majorana zero-modes in nanowires, quantum spin Hall edges, and quantum dots
Promotor: Prof.dr. C.W.J. Beenakker
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Investigations of Radiation Pressure: Optical side-band cooling of a trampoline resonator and the effect of superconductivity on the Casimir
This thesis consists of two subjects, that are both a consequence of radiation pressure.
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The physics of nanowire superconducting single-photon detectors
Promotores: Prof.dr. D. Bouwmeester, Prof.dr. A. Fiore (TU Eindhoven)
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On the random-matrix theory of Majorana fermions in topological superconductors
The thesis mainly contributes to the characterization of Majorana fermions as they appear in the Condensed Matter context.
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Transport coefficients and low energy excitations of a strongly interacting holographic fluid
In this thesis, classes of strongly interacting quantum field theories, have been studied.
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Anisotropy in cell mechanics
Mechanical interactions between cells and their environment play an important role in many biological processes.
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CO oxidation catalysis at multiple length scales
Promotor: J.W.M. Frenken Co-Promotor: R. Felici
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Silicon pore optics for high-energy optical systems
This thesis examines silicon pore optics (SPO), a technology that exploits silicon wafers from the semiconductor industry to create extremely high quality X-ray optics, by studying its manufacturing process, applications, and prospects.
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Hybrid Josephson junctions and their qubit applications
A Josephson junction is a device where a thin insulating barrier or a nanostructure is placed between two superconducting leads. Such a junction is essential to superconducting qubits that store quantum information due to its anharmonic spectrum.
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On topological properties of massless fermions in a magnetic field
Make more fluid: In condensed matter systems, electrons can acquire unusual properties from their interaction with the atomic lattice.
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Two-photon luminescence of gold nanorods: applications to single-particle tracking and spectroscopy
Gold nanorods are biocompatible nanoparticles that present an excellent two-photon signal that can be used to get high spatial resolution inside living cells. Gold nanorods are photostable and therefore can be followed inside cells for long time, with possible applications as trackers in live cells.
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On the coexistence of Landau levels and superconductivity
In unconventional high temperature superconductors, supercurrent vortices are known to spoil the Landau levels. In this thesis the emergence of Landau levels is studied in different types of superconductors: Weyl superconductors, and the Fu-Kane heterostructure.
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Spin transport and superconductivity in half-metallic nanowires and junctions
The interest of this thesis lies in spin transport in normal metals and superconducting half-metallic junctions.
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Quantifying nucleosome dynamicsand protein binding with PIE-FCCS and spFRET
In this thesis I describe the results of Pulsed Interleaved Excitation and Fluorescence (Cross) Correlation Spectroscopy (PIE-F(C)CS) combined with single-pair Förster Resonance Energy Transfer (spFRET) used to study dynamics in single nucleosomes, which depends on subtle differences in the length of…
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Theoretical Physics
In de geest van ‘eenheid door verscheidenheid’ is ons doel het bevorderen van inzicht in en waardering voor het wonder dat dezelfde natuurkundige wetten en wiskundige concepten van toepassing zijn op de hele natuur, van de grootste tot de kleinste energie- en lengteschalen. Wij streven naar de toepassing…
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Tropical Tensor Networks and Bell Inequalities: From Multipartite Nonlocality to Quantum Device Certification
Promotie
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Complex impedance scanning tunneling microscopy
Promotie
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Latin America and the UN
Subproject of the ERC project 'Challenging the Liberal World Order from Within: The Invisible History of the United Nations and the Global South'.