Electron microscopy has become an extremely important techniquein a wide variety of elds.

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.

Single-molecule spectroscopy has become a powerful method for using organic fluorescent molecules in numerous applications.

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.

Molecular materials have been a subject of interest in fundamental research and applications for decades, and have been studied as bulk crystals, (thin) films and as individual molecules, due to the large variety in their properties. This dissertation explores pentacene crystals near the two-dimensional…

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.

The dissertation describes TEM experiments on heterogeneous catalysts.

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.

Promotor: Prof.dr. J.P. Abrahams, Prof.dr. M. van Heel

This thesis describes a study from both a theoreticaL and an experimental point of view.

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.

Promotor: J. Zaanen, Co-Promotor: V. Juricic

Promotor: Prof.dr. J.M. van Ruitenbeek, Prof.dr. R.M. Tromp

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.

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.

Promotores: G.W. Canters, T.J. Aartsma

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…

Promotores: Prof.dr. H.P. Spaink & Prof.dr. P.C.W. Hogendoorn Co-promotor: Dr. M.J.M. Schaaf

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…

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.

The research in this thesis is focused on tomographic reconstruction based on two imaging modalities in electron microscopy.

Artificial photosynthesis has recognised potential to produce green and sustainable fuels from earth-abundant resources such as water, carbon dioxide (CO2), and sunlight.

Bacteria have the ability to alter their morphology in order to adapt to changing environments.

Promotor: Prof.dr. E.J.J. Groenen, Co-Promotor: M. Huber

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.

Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda

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.

Promotor: Prof.dr. H.J.M de Groot, Co-Promotor: A. Alia

Multicellular giant algae Chara species have been widely used in physiological studies for decades.

Promotors: Prof.dr. J. Zaanen, Prof.dr.ir. H. Hilgenkamp

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.

This doctoral thesis is an effort to understand how lipid phase-separation induced by diacylglycerol analogues in lipid-based nanoparticles affects their in vivo behavior, leading to specific nanoparticle-protein communications and selective cell targeting.

Promotor: J.P. Abrahams, Co-promotor: T. Grüne

This thesis described the development of novel scanning tunneling microscopy techniques to investigate strongly correlated electronic states in quantum matter.

Electrons in a crystal lattice have properties that may differ from those of a free electron in vacuum.

Promotores: T.H. Oosterkamp, N. de Jonge

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.

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.

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'.

Triplet superconductivity refers to a condensate of equal-spin Cooper pairs (pairs of electrons with equal spin).

Onderzoeksgroepen in het Quantum Matter & Optics onderzoeksprogramma onderzoeken elektronische eigenschappen van interacties van materie en lichtmaterie, met de nadruk op quantuminformatie.

Promotor: Prof.dr. J.W.M. Frenken

Promotores: Prof.dr. G.W. Canters, Prof.dr. T.J. Aartsma

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…

As a virtually inexhaustible source, solar energy plays a major role in future global energy scenarios.

Promotor: H.J.M. de Groot

Promotor: R. Gill, Co-promotor: P. Massart

Promotor: Prof.dr. M. Ubbink

Geometric phases lead to a nontrivial interference result when an electron's different quantum mechanical paths choices encircle a magnetic coil in an Aharonov-Bohm experiment.

Protein–protein complexes are formed via transient states called encounter complexes that greatly influence the formation of the stereospecific complex.