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Janssen, R.M.J. (author)
At the center of every galaxy there is a super-massive black hole of a million or more solar masses. In most galaxies the presence of this black hole can only be detected through its gravitational attraction, which affects the motion of nearby stars. However, in about 10% of the galaxies the super-massive black hole is the engine of one of the...
doctoral thesis 2017
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Coumou, P.C.J.J. (author)
Thin films of superconducting materials with a high resistance in the normal state, such as TiN, NbTiN, NbN and InO, are intensively studied from both an application and a fundamental point of view. A spatially inhomogeneous superconducting state can arise in these materials as a result of the strong disorder. This Thesis provides an...
doctoral thesis 2015
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De Visser, P.J. (author)
This thesis describes the intrinsic limits of superconducting microresonator detectors. In a superconductor at low temperature, most of the electrons are paired into so called Cooper pairs, which cause the well-known electrical conduction without resistance. Superconducting microwave resonators have therefore very high quality factors and are...
doctoral thesis 2014
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Hortensius, H.L. (author)
doctoral thesis 2014
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Vercruyssen, N. (author)
This thesis focusses on driven superconducting heterostructures. Both experimentally and theoretically we address the following questions: (a) how does the presence of different metallic and dielectric materials influence the electronic properties of a driven superconductor? (b) how does a non-equilibrium electron distribution arise and how does...
doctoral thesis 2013
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Barends, R. (author)
One of the greatest challenges in astronomy is observing star and planetary formation, redshifted distant galaxies and molecular spectral ‘fingerprints’ in the far-infrared spectrum of light, using highly sensitive and large cameras. In this thesis we investigate superconducting resonators for photon detection. In superconductors the electrons...
doctoral thesis 2009
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Lodewijk, C.F.J. (author)
The Atacama Large Millimeter/submillimeter Array (ALMA) is an astronomical observatory that is being built on a 5000 m altitude plateau in Chile to perform heterodyne measurements in the frequency range of 30 to 950 GHz. These measurements will reveal the presence of characteristic molecules that tell us more about the evolution of the early...
doctoral thesis 2009
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Russo, A. (author)
doctoral thesis 2007
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Keizer, R.S. (author)
This thesis describes a series of experiments and a theoretical study in order to understand and control the behavior of electrons in many-body systems. In particular, the experiments concentrate on competition between the - antagonistic - electronic states of superconductivity and ferromagnetism, and are strongly motivated by the recent...
doctoral thesis 2007
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Hajenius, M. (author)
Heterodyne measurements in the frequency range between 1 - 6 terahertz (THz) are expected to provide a wealth of information on questions ranging from the formation of new stars and the conditions under which life formed on our own planet to the ozone hole in our own atmosphere. Hot electron bolometers (HEB) are currently the only suitable...
doctoral thesis 2007
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Craciun, M.F. (author)
The ability to introduce charge carriers in organic molecular materials and control their concentration is of great relevance for both fundamental research and applications. In this thesis, it has been demonstrated that the electronic properties of Metal Phthalocyanines (MPc) and pentacene (PEN) molecular materials can be tuned by controlling...
doctoral thesis 2006
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Man, H.T. (author)
Carbon Nanotubes are molecules with exceptional physical properties that are most useful for applications in the growing field of nanotechnology. In addition, because of its special electrical properties, they are extremely useful for experiments on the fundamental properties of one-dimensional electronic systems. This thesis describes a series...
doctoral thesis 2006
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Snijders, P.C. (author)
One-dimensional (1D) solid state systems can behave drastically different from their higher dimensional counterparts. Increased interactions can produce electronic and/or structural instabilities. In this respect, the following fundamental questions are important for a proper understanding of the properties of the ultimate 1D systems consisting...
doctoral thesis 2006
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De Boer, R.W.I. (author)
Organic electronics constitute an innovative field, with interesting applications complementary to the silicon semiconductor technology. From a scientific perspective, there is large interest in the fundamental understanding of electrical transport in organic semiconductors. However, a well-developed microscopic description is still lacking, due...
doctoral thesis 2005
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Meijer, F.E. (author)
In modern semiconductor devices, only the charge of electrons is being utilized for the manipulation and transport of information. The spin degree of freedom of the electrons has not been exploited in any commercial semiconductor application so far. People in the field of Spintronics are trying to find new or improved functionalities and...
doctoral thesis 2005
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Jackson, B.D. (author)
doctoral thesis 2005
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Barychev, A.M. (author)
doctoral thesis 2005
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Smit, G.D.J. (author)
A dopant atom in a semiconductor, the solid state analogue of a hydrogen atom, has a Bohr radius of several nanometers. Because this length scale is close to being accessible by modern nanolithography, detection and control of charge and spin in a semiconductor down to the level of individual dopant atoms is within reach and provides the unique...
doctoral thesis 2004
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Meijer, E.J. (author)
In this thesis we study charge transport in organic semiconductors. We do this by focusing on the physical characterization of disordered organic field-effect transistors. It will be made clear that the disorder in the polymer films is crucial for the interpretation of the data. The field-effect transistor geometry allows variation of the charge...
doctoral thesis 2003
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Rep, D.B.A. (author)
doctoral thesis 2002
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