202 zoekresultaten voor “light” in de Publieke website
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Photothermal studies of single molecules and gold nanoparticles: vapor nanobubbles and conjugated polymers
Promotor: M.A.G.J. Orrit
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Caging ruthenium complexes with non-toxic ligands for photoactivated chemotherapy
The main goal of the research described in this thesis was the development of new photoactivated chemotherapy (PACT) ruthenium(II) complexes bearing a non-toxic photolabile ligand.
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Molecular and Nano-Engineering with Iron, Ruthenium and Carbon: Hybrid structures for Sensing
Metal complexes and 2D materials like graphene were combined to produce structures that can function as sensors.
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Plasmonic enhancement of single-molecule fluorescence under one- and two-photon excitation
This thesis aims to improve the detection from ultra-weak single emitter by enhancing their emission properties with plasmonic nanostructures. We exploit the wet-chemically synthesized single crystalline gold nanorods (GNRs) as our basic frameworks in the whole studies, simply because of their unique…
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Surface plasmon lasers
Surface plasmons (SPs) are surface waves at the interface between a dielectric and a good metal, and are formed by the interaction between light and the free electrons at the metal-dielectric interface. They provide strong field confinement for optical fields, opening new possibilities for enhanced…
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Low energy electron transmission through layered materials and chiral organic films
In this Ph.D. thesis we study the interaction of low energy electrons with thin materials, namely layered materials (graphene, hexagonal boron nitride, molybdenum disulfide) and organic films. At these low energies the quantum mechanical wavelength of the electron wave function is in the order of a…
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Towards artificial photosynthesis on the lipid bilayer of liposomes
Artificial photosynthesis has recognised potential to produce green and sustainable fuels from earth-abundant resources such as water, carbon dioxide (CO2), and sunlight.
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Exploring future multi-messenger Galactic astronomy
For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.
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A computational study of structural and excitonic properties of chlorosomes
The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…
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Role of near-surface environment in tuning electrochemical CO2 reduction reaction and H2 evolution reaction
This thesis has shed light on some of the ways in which the local electrolyte composition can differ from the bulk and how these changes in the local reaction environment can determine the activity and/or selectivity of two important electrocatalytic reactions, namely, electrochemical CO2 reduction…
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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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Studies on molecular basics of metabolic syndrome in zebrafish
The research described in this thesis has, using the zebrafish as a model system, shed new light on the intricate relationship between TB and DM2, in particular on the role of leptin, SHP-1 and glucocorticoids.
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Plant-soil interactions determine ecosystem aboveground and belowground processes in primary dune ecosystems
Soil biodiversity is of great importance for the maintenance of multifunctionality in terrestrial ecosystems.
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Force sensing and transmission in human induced pluripotent stem-cell-derived pericytes
Pericytes, the mural cells of blood microvessels, are important regulators of vascular morphogenesis and function that have been postulated to mechanically control microvascular diameter through as yet unknown mechanisms.
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The role of water in hydrogen electrocatalysis
Promotor: M.T.M. Koper, Co-promotor: L. Juurlink
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The Great Collapse
Promotor: Prof.dr. S.F. Portegies Zwart
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On Multifield Inflation, Adiabaticity and the Speed of Sound of the Curvature Perturbations
Promotor: A. Achúcarro, Co-Promotor: G.A. Palma
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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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Unraveling the surface formation of regular and deuterated water in space: a combined laboratory and computational study
Promotor: Prof.dr. H.V.J. Linnartz
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Squaramide-based supramolecular materials for 3D cell culture applications
A new type of tripodal squaramide-based supramolecular hydrogels is developed and studied.
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Patterns in natural systems
Promotor: A. Doelman, Co-promotores: P.J.A. van Heijster; A. Zagaris
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Star formation and aging at cosmic noon: the spectral evolution of galaxies from z=2
Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)
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Rituals of Birth, Circumcision, Marriage, and Death among Muslims in the Netherlands
Migration imposes special pressures on the meaning, experience and organization of lifecycle rituals. These pressures are felt most strongly by Muslim migrants to Western Europe. In this innovative study, Nathal M. Dessing examines the effects of migration on the life cycle rituals of Moroccan, Turkish…
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Pancreatic cancer: Chasing the light at the end of the tunnel
Promotie
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Verlichting door licht: dit kankermedicijn vormt zelf nanodeeltjes
Chemotherapie die niet schadelijk is voor het lichaam, maar wel effectief optreedt tegen kankercellen: dat is het doel van de onderzoeksgroep van chemicus Sylvestre Bonnet. Tijdens zijn promotieonderzoek bracht chemicus Xuequan Zhou dat doel een stukje dichterbij. Hij ontwikkelde moleculen die, eenmaal…
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Weighty synthetic ubiquitin tools to shine a light on the enzymes of the ubiquitin pathway
Promotie
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Light therapy for cancer-related fatigue in (non-)Hodgkin Lymphoma Survivors
Promotie
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Sylvestre Bonnet
Wiskunde en Natuurwetenschappen
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Towards artificial photosynthesis: resolving supramolecular packing of artificial antennae chromophores through a hybrid approach
Promotor: H.J.M. de Groot
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Policy Review on Decoupling
Development of indicators to assess decoupling of economic development and environmental pressure in the EU-25 and AC-3 countries.
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Ruthenium- and cobalt-based artificial metalloenzymes for photocatalytic water oxidation in artificial photosynthesis
Producing green energy has become the main goal in our society in the search of reducing or eliminating the carbon emission from fossil fuels.
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LiDAR
LiDAR is een relatief nieuwe meettechniek waarmee het Actueel Hoogtebestand Nederland het hele land zeer nauwkeurig mee heeft ingemeten. Het grote voordeel van deze manier van meten is dat vegetatie geen belemmering vormt. Hierdoor kunnen ook gebieden waar vegetatie de zichtbaarheid van de ondergrond…
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A study on PsbS and its role as a pH sensor
Solar energy harnessed by plants and algae has great potential to be converted into biofuels for future generations.
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Stellar radio beacons for Galactic astrometry
A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.
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Cavity quantum electrodynamics with rare-earth ions in solids
Promotor: Prof.dr. D. Bouwmeester, Co-Promotor: M.J.A. de Dood
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Taking control of charge transfer: strategic design for solar cells
Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda
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Optical properties of DNA-hosted silver clusters
Promotor: D. Bouwmeester, Co-promotor: D. Kraft
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Dynamics and radiation from tidal disruption events
When a star gets too close to a supermassive black hole, it is torn apart by strong tidal forces in a tidal disruption event (TDE).
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Phenotypic engineering of photosynthesis related traits in Arabidopsis thaliana using genome interrogation
Promotor: P.J.J. Hooykaas, Co-Promotor: E.J. van der Zaal
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Synthesis of chemical tools to study the immune system
This thesis describes the synthesis and biological evaluation of TLR2/6, TLR4, TLR7/8 and TLR9 ligands, of which the activity can be conditionally controlled.
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Not so smooth after all: resolving dust and gas structures in protoplanetary disks
A large diversity of exoplanetary systems has been found, but it is still unclear what drives this diversity.
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Current challenges in statistical DNA evidence evaluation
Promotor: R.D. Gill, F. Taroni
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Reactivity of cobalt(II)-dichalcogenide complexes: correlation between redox conversion and ligand-field strength
The redox-conversion reaction of metal-disulfide and metal-thiolate complexes are important, as they may shed light on electron-transfer reactions that often occur in Nature.
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Cheating belowground interactions
Mycoheterotrophy is a particular mode of life in which plants obtain carbohydrates from their associated fungal partners, instead of by using photosynthesis.
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Plasmonic enhancement of one-photon- and two-photon-excited single-molecule fluorescence by single gold nanorods
This thesis is a collection of experimental attempts to enhance photoluminescence of fluorescent molecules and quantum dots with single gold nanorods (GNRs) and relevant applications.
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Sterile neutrinos in the early Universe
Promotor: A. Achúcarro, Co-promotor: A. Boyarsky
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The effects of burying beetle social behaviours on interspecific interactions
This ecological community has long been known to affect host biology, and their diverse roles have been further clarified in recent years following numerous studies of animal:microbiota interactions in diverse systems.
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Squaramide-based supramolecular polymers
Supramolecular polymers are class of materials that are formed by non-covalent interactions such as hydrogen bonding, π-π interactions, electrostatic interactions and the hydrophobic effect.
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Development of personalized health monitoring using ultra-weak photon emission based on systems medicine concepts
Promotor: Jan van der Greef; Co-promotors: Mei Wang; Eduard van Wijk
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The structure of the dusty cores of active galactic nuclei
Promotor: W. Jaffe, Co-promotor: K. Meisenheimer