385 zoekresultaten voor “particle physics” in de Publieke website
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Magnetic imaging of spin waves and magnetic phase transitions with nitrogen-vacancy centers in diamond
The elementary excitations of magnets are called spin waves, and their corresponding quasi-particles are known as magnons. The rapidly growing field of Magnonics aims at using them as information carriers in a new generation of electronic devices, (almost) free of electric currents.
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Piepkleine deeltjes bouwen zelfstandig complexe structuren
Kleinere computerchips, smallere cameraatjes; ze worden steeds moeilijker om te maken. Maar wat als de bouwstenen zichzelf opbouwen? Natuurkundige Daniela Kraft bedacht een methode om deeltjes aan te sturen in samenklonteren. Publicatie in ACS Nano.
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From supernovae to galaxy clusters: observing the chemical enrichment in the hot intra-cluster medium
Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa
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Spin-momentum locking in oxide interfaces and in Weyl semimetals
Electrons in a crystal lattice have properties that may differ from those of a free electron in vacuum.
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Nano shapes micro : Impacts of metallic nanoparticles on microbial communities
This thesis aimed to investigate the impact of exposure dynamics, relative contributions of ENPs(particle) and ENPs(ion), and dosing regimens on the toxicity of ENPs varying in different physico-chemical properties, on the composition and functioning of soil microbial communities.
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The formation of complex organic molecules in dense clouds-Sweet results from laboratory
Large areas of space are filled by molecular clouds that consist of gas and dust grains that are the remnants of dead stars. When these clouds start collapsing, the decreasing temperature and increasing density cause gas particles to start accreting onto dust grain surfaces.
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Morphodynamic equilibria in tidal inlet systems: sensitivity to geometrical variations
A tidal basin is an inland sea which is almost entirely enclosed by land and connected to the open sea by a tidal inlet. Through the tidal inlets interaction takes place between the tidal basin and the open sea.
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Assistant professor in Theoretical Quantum Matter, tenure track (1.0 fte)
Wiskunde en Natuurwetenschappen, Leids Instituut voor Onderzoek in de Natuurkunde (LION)
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Fate, accumulation and ecotoxicity of copper nanoparticles under environmentally relevant conditions
Fate and toxicity of copper nanoparticles was related to the water chemistry of the environment and pristine size.
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Translational Symmetry Breaking in Holographic Strange Metals
In this thesis, we have used numerical approaches to study the effects of translational symmetry breaking on strange metallic systems as realised by the holographic duality.
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Michel Orrit wint Physicaprijs 2016
De Physicaprijs 2016 is toegekend aan Michel Orrit vanwege zijn baanbrekende werk op het gebied van één-molecuul-spectroscopie.
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Hendrik Casimir Prize 2017 voor Nashwan Sabti en Nikolas Kavadias
Op de LION/Sterrewacht nieuwjaarsborrel hebben natuurkundestudenten Nashwan Sabti (Leiden) en Nikolas Kavadias (Delft) de 2017 Hendrik Casimir Prize in ontvangst genomen. The Casimir Research School deelt jaarlijks de Hendrik Casimir Prize uit aan de beste masterstudenten in (technische) natuurkunde…
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Het onzichtbare zichbaar maken met gouden nanodeeltjes
Gouden nanodeeltjes vormen een nuttig hulpmiddel om enzymen en andere moleculen beter te begrijpen. Biswajit Pradhan, promovendus aan het Leiden Institute of Physics, gebruikt gouden nanostaafjes om individuele moleculen te bestuderen die op andere manieren lastig te detecteren zijn. De resulterende…
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Gold nanorod photoluminescence: applications to imaging and temperature sensing
Promotor: M.A.G.J. Orrit
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Adjuvanted nanoparticulate seasonal influenza vaccines
Promotor: W. Jiskoot, Co-promotor: A. Kros
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On the geometry of demixing: A study of lipid phase separation on curved surfaces
Like a mixture of oil and water, lipid membranes separate into two liquid phases.
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Determining the most appropriate dose metrics for evaluating dose-response relationships of metal-based nanoparticles to Zebrafish embryos
Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver
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Hot Nanoparticles
Gold nanoparticles show surprisingly strong interactions with light in the visible range, which can be divided into scattering, absorption, and photoluminescence.
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Stuiterende hydrogelballetjes populair in de media
De verklaring van natuurkundige Scott Waitukaitis voor de gillende en stuiterende hydrogelballetjes is door verschillende media overgenomen. Zo was Waitukaitis te zien op het RTL 4 journaal van maandag 24 juli.
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Applications of topology to Weyl semimetals and quantum computing
This thesis covers various applications of topology in condensed matter physics and quantum information.
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Evolutionary molecular dynamics
This thesis introduces the concept of
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PhD candidate: HiTaL: High Throughput Anisotropic Lithography
Wiskunde en Natuurwetenschappen, Leids Instituut voor Onderzoek in de Natuurkunde (LION)
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Voorbij de intensiteitsfrontier
In de jacht op nieuwe deeltjes doorzoeken natuurkundigen botsingen bij steeds hogere energie, waarbij ze de energiefrontier telkens een stukje verleggen. Sommige deeltjes laten zich echter moeilijk vangen omdat ze zeldzaam interactie vertonen; niet vanwege een hoge energie. Dit werpt een nieuwe barrière…
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Breaking of ensemble equivalence for complex networks
For many system in statistical physics the microcanonical and canonical ensemble are equivalent in the thermodynamic limit, but not for all.
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Frontiers of Nanoscience (NanoFront)
Kunnen we van quantum-verrassingen quantum toepassingen maken? Kunnen we het leven onderzoeken en opbouwen vanuit de nano-schaal?
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NanoFeed
Do selenium nanoparticles in fish food cause subtle alterations in behavior of fish: effect of particles size and concentration?
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Het miljard deeltjes probleem
Promotor: Prof.dr. S. Portegies Zwart
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Electrical and magnetic properties of ferritin: electron transport phenomena and electron paramagnetic resonance
Ferritin is a spherical metalloprotein, capable of storing and releasing iron in a controllable way. It is composed of a protein shell of about 12 nm and within its cavity, iron is stored in a mineral form.
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Optical properties of DNA-hosted silver clusters
Promotor: D. Bouwmeester, Co-promotor: D. Kraft
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Understanding the uptake and internal distribution of metallic nanoparticles in Danio rerio larvae
The aim is to discover where differently shaped metal nanoparticles distributes in Danio rerio, linking the distribution with genomic responses and so come up with a Mode of Action.
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Gold nanoparticle-peptide conjugates for biomedical applications
Despite the fact that gold nanoparticles (GNPs) are one of the most studied nanoparticles, there is still a necessity for new approaches allowing for effective protective coating to enable wider use of GNPs in biomedical applications.
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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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Synthesis and application of glycans unique to S. Mansoni
Schistosomiasis is an acute and chronic disease caused by blood dwelling parasitic trematodes of the genus Schistosoma, and it is classified as the second most socioeconomically devastating parasitic disease, second only to malaria.
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Sterile neutrinos in the early Universe
Promotor: A. Achúcarro, Co-promotor: A. Boyarsky
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Mesoporous silica nanoparticle-based protein delivery systems for biomedical applications
Promotor: A. Kros
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Quantitative Super-Resolution Microscopy
Promotor: T. Schmidt
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The parabolic Anderson model and long-range percolation
Promotor: Prof.dr. F. den Hollander, G.Maillard
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Towards understanding the toxicity of copper nanoparticles in aquatic ecosystems
Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver
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Mind the gap: gas and dust in planet-forming disks
Promotores: Prof.dr. E.F. van Dishoeck, Prof.dr. C.P. Dullemond
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Modelling the interactions of advanced micro- and nanoparticles with novel entities
Novel entities may pose risks to humans and the environment. The small particle size and relatively large surface area of micro- and nanoparticles (MNPs) make them capable of adsorbing other novel entities, leading to the formation of aggregated contamination.
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Meta-heuristics for vehicle routing and inventory routing problems
Promotores: T.H.W. Bäck, Y. Tan, Co-promotor: M.T.M. Emmerich
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Morphogenesis and heterogeneity in liquid-grown streptomyces cultures
The filamentous bacteria Streptomyces are widespread inhabitants of terrestrial soils.
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Self-assembly of flexible and rigid structures: from colloidal molecules to lattices
Self-assembly offers a promising route to create complex structures and materials using simple building blocks. Through, colloidal self-assembly, we can understand the governing principles of the self-assembly process and unlock its potential in diverse applications in materials science, photonics and…
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Aggravating matters: accounting for baryons in cosmological analyses
Three major cosmology-focused missions are planned for the next decade: the Euclid space telescope, the Vera C. Rubin Observatory in Chile, and the Nancy Grace Roman Space Telescope.
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Elastisch Leidenfrost-effect voor zachte motoren
Waterdruppels zweven in een hete pan vanwege het zogenoemde Leidenfrost-effect. Nu hebben natuurkundigen een variatie ontdekt: het Elastische Leidenfrost-effect. Het verklaart waarom hydrogel balletjes op een hete plaat rondspringen en hoge piepgeluidjes maken. Publicatie in Nature Physics op 24 jul…
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Multi-objective mixed-integer evolutionary algorithms for building spatial design
Multi-objective evolutionary computation aims to find high quality (Pareto optimal) solutions that represent the trade-off between multiple objectives.
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The holographic glass bead game: from superconductivity to time machines
Promotores: Prof.dr. J. Zaanen, Prof.dr. K.E. Schalm
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Revealing the nature of new low-frequency radio source populations
It has now been well established that shocks and turbulent motions in the intra-cluster medium (ICM) generated through cluster mergers can produce large-scale synchrotron emission.