176 zoekresultaten voor “electron cryotomography” in de Publieke website
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eV-TEM: Transmission Electron Microscopy with few-eV Electrons
Electron microscopy has become an extremely important techniquein a wide variety of elds.
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Noortje Dannenberg
Wiskunde en Natuurwetenschappen
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Towards Optical Detection of a Single Electron
Single-molecule spectroscopy has become a powerful method for using organic fluorescent molecules in numerous applications.
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Nano-scale electronic structure of strongly correlated electron systems
In condensed matter systems electron-electron interactions, negligible in everyday metals, can dramatically alter the electronic behavior of the system. Examples of such altered behavior include high-temperature superconductivity and modulation of the electron density.
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Flow: A study of electron transport through networks of interconnected nanoparticles
This thesis describes a study from both a theoreticaL and an experimental point of view.
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Cryo Electron Tomography Studies On Bacterial Chemosensory Arrays
Bacterial chemosensory arrays are protein assemblies that are the key structural and functional component for motile bacteria to sense their internal or environmental chemical signals.
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Light and Electron Microscopy Facility
Het doel van deze faciliteit is om het biomedisch onderzoek te versnellen door toegang te bieden tot geavanceerde licht- en elektronenmicroscopie en door het delen van expertise over monstervoorbereiding, beeldvormingsmodaliteiten, gegevensopslag en beeldanalyse.
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Novel detectors and algorithms for electron nano-crystallography
Promotor: Prof.dr. J.P. Abrahams, Prof.dr. M. van Heel
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Low-Energy Electron Microscopy on Two-Dimensional Systems: Growth, Potentiometry and Band Structure Mapping
Promotor: Prof.dr. J.M. van Ruitenbeek, Prof.dr. R.M. Tromp
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Transmission electron microscopy on live catalysts
The dissertation describes TEM experiments on heterogeneous catalysts.
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Visualizing strongly-correlated electrons with a novel scanning tunneling microscope
Materials with strongly correlated electrons show some of the most mysterious and exotic phases of quantum matter, such as unconventional superconductivity, quantum criticality and strange metal phase.
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Superlattices in van der Waals materials: A Low-Energy Electron Microscopy study
n this PhD thesis, the recombination of different atomic lattices in stacked 2D materials such as twisted bilayer graphene is studied. Using the different possibilities of Low-Energy Electron Microscopy (LEEM), the domain forming between the two atomic layers with small differences is studied.
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The symmetry of crystals and the topology of electrons
Promotor: J. Zaanen, Co-Promotor: V. Juricic
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Fluorescence Correlation Spectroscopy on Electron Transfer Reaction: Probing Inter- and Intramolecular Redox Processes
Promotores: G.W. Canters, T.J. Aartsma
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Inverse electron demand Diels-Alder pyridazine elimination: synthetic tools for chemical immunology
The inverse electron demand Diels-Alder (IEDDA) pyridazine elimination emerged in 2013 as a new bioorthogonal reaction and constitutes a prime example of what is now known as dissociative bioorthogonal chemistry. The research described in this Thesis aims to develop synthetic strategies which enable…
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against mycobacterial infection: analysis by a combination of light and electron microscopy
Promotores: Prof.dr. H.P. Spaink & Prof.dr. P.C.W. Hogendoorn Co-promotor: Dr. M.J.M. Schaaf
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Helder beeld van bacteriën
Een bacterie supersnel bevriezen, om de structuur van buiten en binnen natuurgetrouw in beeld te brengen. Hoogleraar Ultrastructuurbiologie Ariane Briegel kwam speciaal hiervoor naar Leiden: de Universiteit Leiden is een van de weinige instituten wereldwijd waar de benodigde apparatuur beschikbaar is.…
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Duizenden beelden van bevroren bacteriën
Hoe detecteren bacteriën signalen uit hun omgeving en hoe passen ze zich daaraan aan? Die vraag intrigeert Ariane Briegel, hoogleraar Ultrastructuurbiologie. Met behulp van nieuwe technieken produceert ze driedimensionale beelden, die nieuwe informatie geven over het zintuiglijke systeem van bacteri…
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A bioorthogonal chemistry approach to the study of biomolecules in their ultrastructural cellular context
In this thesis the combinatorial use of bioorthogonal labelling and Electron Microscopy (EM)-based imaging techniques is explored to enable observations of specific molecular targets in their ultrastructural context within the cell.
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Reconstruction Methods for Combined HAADF-STEM and EDS Tomography
The research in this thesis is focused on tomographic reconstruction based on two imaging modalities in electron microscopy.
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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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Parkinson’s protein α-synuclein: membrane interactions and fibril structure
The thesis describes the use of electron paramagnetic resonance (EPR) spectroscopy, in continuous wave and pulse modes, to address the interaction of α-Synuclein (αS) with membranes and the aggregation of αS.
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Spin-label EPR Approaches to Protein Interactions
Promotor: Prof.dr. E.J.J. Groenen, Co-Promotor: M. Huber
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Structural characterization of the cell envelope of Actinobacteria under changing environments
Bacteria have the ability to alter their morphology in order to adapt to changing environments.
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The Chara plasma membrane system : an ancestral model for plasma membrane transport in plant cells
Multicellular giant algae Chara species have been widely used in physiological studies for decades.
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Fermions and Bosons: Excitons in strongly correlated materials
Promotors: Prof.dr. J. Zaanen, Prof.dr.ir. H. Hilgenkamp
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Molecular electronics: Controlled manipulation, noise and graphene architecture
Atoms and molecules are the basic units of matter. If we keep dividing a bar of gold or a glass of water into smaller parts, at the end we are left with a single gold atom or a water molecule.
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Bioorthogonal Labeling Tools to Study Pathogenic Intracellular Bacteria
In this thesis, bioorthogonal chemistry is combined with correlative light-electron microscopy to selectively label and study pathogenic intracellular bacteria within the host immune cell.
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The heart of oxygenic photosynthesis illuminated
Promotor: Prof.dr. H.J.M de Groot, Co-Promotor: A. Alia
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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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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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A new method to reconstruct the structure from crystal images
Promotor: J.P. Abrahams, Co-promotor: T. Grüne
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Geert-Jan Kroes
Wiskunde en Natuurwetenschappen
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Cellular cryo-tomography of nidovirus replication organelles
Promotie
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Unraveling the mechanism of multicopper oxidases: from ensemble to single molecule
Promotores: Prof.dr. G.W. Canters, Prof.dr. T.J. Aartsma
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Explorations of Water Oxidation Catalysis in Explicit Solvent
In the search for sustainable energy solutions, the idea of artificial photosynthesis has been proposed as an approach with which to use water and sunlight to produce hydrogen.
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Quantum Matter and Optics
Onderzoeksgroepen in het Quantum Matter & Optics onderzoeksprogramma onderzoeken elektronische eigenschappen van interacties van materie en lichtmaterie, met de nadruk op quantuminformatie.
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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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eV-TEM: Transmission Electron Microscopy with few-eV Electrons
Promotie
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Nieuwe transmissiemicroscoop voor elektronen met lage energie
Natuurkundige Daniël Geelen ontwikkelde tijdens zijn promotie een nieuwe microscoop die laag-energetische elektronen gebruikt. Zulke elektronen zijn minder schadelijk voor biologische en organische materialen. Geelen promoveert op 31 mei.
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Manipulating carbon nanotubes Towards the application as novel field emission sources
Promotores: T.H. Oosterkamp, N. de Jonge
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The structure of a working catalyst: from flat surfaces to nanoparticles
Promotor: Prof.dr. J.W.M. Frenken
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Spin-triplet supercurrents of odd and even parity in nanostructured devices
Triplet superconductivity refers to a condensate of equal-spin Cooper pairs (pairs of electrons with equal spin).
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'Q-wires': Synthesis, electrochemical properties and their application in electro-enzymology
An objective of this research was to achieve direct, well-defined and non-rate-limiting electron transfer between respiratory enzymes and the electrode surface by means of 'Q-wires'.
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Deciphering fermionic matter: from holography to field theory
Promotor: K.E. Schalm, Co-promotor: S.S. Lee
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Sparsity-Based Algorithms for Inverse Problems
Inverse problems are problems where we want to estimate the values of certain parameters of a system given observations of the system. Such problems occur in several areas of science and engineering. Inverse problems are often ill-posed, which means that the observations of the system do not uniquely…
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Accelerating the Photocatalytic Water Splitting in Catalyst−Dye Complexes
As a virtually inexhaustible source, solar energy plays a major role in future global energy scenarios.
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Development and application of cryo-EM tools to study the ultrastructure of microbes in changing environments
Cryogenic electron microscopy (cryo-EM) is a powerful technique used to visualize the inside of cells and to study specific protein complexes. Within this thesis, I describe the use of various cryo-EM techniques to gain insight into the structural changes of the human pathogen, Vibrio cholerae, as it…
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Towards Optical Detection of a Single Electron
Promotie
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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.