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van Haren, Bob (author)In this MSc thesis report, the process of developing a laser aiming solution for the purpose of bird repelling will be described. This process consists roughly of five phases: Setting up requirements, generating concepts, picking and developing a single concept, building and finally testing this concept.<br/><br/>The current laser aiming...master thesis 2018
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Brouwer, Andreas (author)Proton therapy is an increasingly popular form of radiotherapy that uses high energy protons for the treatment of cancer. It results in a lower integral dose than the classical photon radiotherapy. This makes it suitable for the treatment of tumors close to critical organs such as in the head and neck. To minimize alignment errors the head and...master thesis 2018
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Rozene Vallespín, Alejandro (author)The resolution of ground-based telescopes is limited by the blurring caused by Earth’s turbulent atmosphere. Adaptive Optics (AO) is a technique used to correct atmospheric distortions, restoring images to diffraction-limited resolution. The main element of an AO system is the Deformable Mirror (DM), which compensates the distortions of the...master thesis 2018
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Kramer, Arnoud (author)In collaboration with the technical university of Twente, Leiden Probe Microscopy (LPM) has built an instrument to study thin film oxide growth during pulsed laser deposition (PLD). Thin filmed (perovskite) oxides have evoked an interest of material scientist, because they inhibit physical properties such as superconductivity, ferromagnetism,...master thesis 2018
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Velders, Nils (author)A new concept was developed to improve current airpot designs for vibration isolation solutions. The concept is based on an additional piston, or add-on, with certain characteristics, that is to be incorporated into an existing airpot-design. The effect of this add-on will passively improve the vibration isolation performance of the airpot. This...master thesis 2017
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Karapanagiotis, Jordan (author)Chronic total occlusion (CTO) occurs in approximately a third of all patients with coronary artery disease and is one of the most challenging types of conditions to treat. Minimally invasive methods like percutaneous coronary intervention (PCI) show a high treating potential as well as low costs, short hospital stay and fast recovery. However,...master thesis 2017
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- Scheepers, T.H.E. (author) master thesis 2017
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- Joziasse, B.L. (author) master thesis 2017
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Fellinger, B.J. (author)The repeatability of precision positioning systems can be improved by reducing the effects of stick-slip in the system. Stick-slip effects introduce a spontaneous jerking motion when overcoming the static friction coefficient, creating accelerations that are hard to predict. Contactless bearing types, such as magnetic levitation or fluid...master thesis 2017
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Kortleve, J.P. (author)From the results it can be concluded that a fixed and a free voice-coil actuated impact drive mechanism can be used as a positioning system in a precision environment, such as the semiconductor industry and extreme large telescopes, to position an object within 1 nanometer and hold the position passively stable within 10nm/hr. The empirically...master thesis 2017
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- Van Moorsel, L. (author) master thesis 2017
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Scheerhoorn, A.G.P.I. (author)White light reflectance spectroscopy is used to determine the reflective properties of human tissue. It is believed that the reflectance of the human tissue is dependent on the pressure applied to the tissue. The reflectance of the human tissue might be an indication if the tissue is diseased. Spectroscopy and a pressure measurement have to be...master thesis 2016
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- Wang, S. (author) master thesis 2016
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Zhang, M. (author)Motion simulators have increasingly been applied for research purposes due to their large motion capabilities and short response time. Key applications are including vehicle simulation, experiments on control behavior in virtual environments and studies into human self-motion perception. To maintain a good dynamic capability, the known motion...master thesis 2016
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Klein Horsman, F. (author)Vibrations can be a limiting factor in systems working with nanometer precision. Inertial sensors are used to measure these vibrations. This thesis presents a hybrid inertial sensor using both a displacement and velocity measurement on a single mass-spring system. The measurements are combined into one output of absolute displacement. A...master thesis 2016
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Kramer, L. (author)Several eye diseases appear in the posterior part of the eye, i.e. the retina or fundus. Retinal images therefore provide valuable information to identify eye diseases. Optical Coherence Tomography (OCT) is a 3D imaging technique that can image the retina with a resolution and depth penetration that can not be achieved by any other non-invasive...master thesis 2016
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Lampaert, S.G.E. (author)A ferrofluid is a fluid with paramagnetic properties while having a colloidal stability. This can be used to obtain a hydrostatic type of bearing that distinguishes itself from other bearings by its compactness, inherent stability, low (viscous) friction, absence of pumps and absence of stick-slip. These properties, together with its low price,...master thesis 2015
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- Van Beek, M.A. (author) master thesis 2015
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Wang, Y.W. (author)An Integrated 6-DoF Lorentz Actuator with Gravity Compensator for Vibration / Precision Positioning has been analyzed and optimized. The gravity compensation function is realized by permanent magnets. The 6-DoF actuator is based on the utilization of the mover magnets. A demonstrator of the novel 6-DoF actuator integrated with magnetic gravity...master thesis 2015
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Habib, S.H. (author)This thesis presents the design and implementation of a precision stage equipped with novel sensing and actuation concepts. The stage is considered among the first stages capable of providing a full rotation as well as planar translations with only one moving part and one sensor, namely a Position Sensitive Detector. This affordable sensor...master thesis 2015