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Wemelsfelder, Tom (author)In recent years, many therapeutic applications for medical ultrasound have arisen, such as ablation of tumors, breaking up kidney stones, and neuromodulation. To localize the target area, often ultrasound imaging methods are used. Conventionally, a different transducer array is used for imaging and therapeutic applications because of their...master thesis 2024
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Wopereis, Michiel (author)Nanomechanical resonators made of two-dimensional (2D) materials are the subject of intensive research due to their remarkable properties, allowing them to operate at high frequencies with high sensitivity. However, dissipation losses and manufacturing issues have prevented them from reaching their full potential. This thesis aims to overcome...master thesis 2024
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de Winter, Jikke (author), Manzaneque Garcia, T. (author), Ghatkesar, M.K. (author)The emerging high-resolution 3D printing technique called two-photon polymerization (2PP) enables to print devices bottom-up rapidly, contrary to the top-down lithography-based fabrication methods. In this work, various polymer microbeams are 3D printed and their resonant characteristics are analyzed to understand the origin of damping. The...journal article 2024
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Weisz, Eli (author)Diamagnetic levitation presents a promising platform for realizing resonant sensors and energy harvesters. The technique offers mechanical isolation from the environment while operating with zero power consumption. This unique feature ensures exceptional sensitivity and accuracy in numerous applications. However, the presence of eddy currents in...master thesis 2023
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Xu, M. (author), Shin, D. (author), Sberna, P.M. (author), van der Kolk, R.J.H. (author), Cupertino, A. (author), Bessa, M.A. (author), Norte, R.A. (author)For decades, mechanical resonators with high sensitivity have been realized using thin-film materials under high tensile loads. Although there are remarkable strides in achieving low-dissipation mechanical sensors by utilizing high tensile stress, the performance of even the best strategy is limited by the tensile fracture strength of the...journal article 2023
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de Winter, Jikke (author)Biosensing properties like mass, density and stiffness on a single cell level can help diagnose diseases. Mass sensing of cells and subcellular components is typically performed with resonant microstructures. Recently such microstructures were fabricated using an emerging 3D printing technique called two-photon polymerization (2PP) contrary to...master thesis 2022
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Chen, X. (author), Ammu, S.K. (author), Masania, K. (author), Steeneken, P.G. (author), Alijani, F. (author)Levitation offers extreme isolation of mechanical systems from their environment, while enabling unconstrained high-precision translation and rotation of objects. Diamagnetic levitation is one of the most attractive levitation schemes because it allows stable levitation at room temperature without the need for a continuous power supply....journal article 2022
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Guo, J. (author)The work in this thesis focuses on potential ways to bring a macroscopic mechanical<br/>resonator in a classical environment into the quantum regime with integrated cavity<br/>optomechanics...doctoral thesis 2021
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Mollaie Daryani, Mehdi (author)In connection with growing in applications of nanoparticles in various industrial sectors such as cosmetics and pharmaceuticals, the demand for in-line identification and characterization of nanoparticles suspended in fluids has increased. In addition to that, nanoparticles in general and nanoplastics in particular, can easily contaminate air...master thesis 2021
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Shin, D. (author), Cupertino, A. (author), de Jong, M.H.J. (author), Steeneken, P.G. (author), Bessa, M.A. (author), Norte, R.A. (author)From ultrasensitive detectors of fundamental forces to quantum networks and sensors, mechanical resonators are enabling next-generation technologies to operate in room-temperature environments. Currently, silicon nitride nanoresonators stand as a leading microchip platform in these advances by allowing for mechanical resonators whose motion...journal article 2021
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Gimbel, Pieter (author)Superconducting microwave resonators based on coplanar waveguides (CPWs), which allow for on-chip implementation, have a wide variety of uses, from the coupling of qubits to the detection of photons from interstellar clouds. With the integration of a bias circuitry, the already versatile resonator will become even more so. However, applying a DC...master thesis 2020
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Belardinelli, P. (author), D Souza, Savio (author), Verlinden, E.J. (author), Wei, J. (author), Staufer, U. (author), Alijani, F. (author), Ghatkesar, M.K. (author)Suspended microfluidic resonators enable detection of fluid density and viscosity with high sensitivity. Here, a two-legged suspended microchannel resonator that probes pico-litres of liquid is presented. The higher resonant modes (flexural and torsional) were explored for increased sensitivity and resolution. Unlike other reported microchannel...journal article 2020
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Patra, B (author), Mehrpoo, M. (author), Ruffino, A. (author), Sebastiano, F. (author), Charbon-Iwasaki-Charbon, E. (author), Babaie, M. (author)This paper presents the characterization and modeling of microwave passive components in TSMC 40-nm bulk CMOS, including metal-oxide-metal (MoM) capacitors, transformers, and resonators, at deep cryogenic temperatures (4.2 K). To extract the parameters of the passive components, the pad parasitics were de-embedded from the test structures using...journal article 2020
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Grazian, F. (author), Shi, W. (author), Soeiro, Thiago B. (author), Dong, J. (author), van Duijsen, P.J. (author), Bauer, P. (author)In high-power wireless battery charging that uses inductive power transfer, a considerable amount of power losses are located in the transmitter and receiver coils because they carry high resonant currents and typically have a loose coupling between them which increases eddy current losses. Therefore, the nominal operation needs to be chosen...conference paper 2020
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van der Zalm, Joost (author)The goal of the research described in this thesis was to investigate the basis of dissipation dilution as well as make it comprehensible. In the written literature we could find that the kinetic energy of an oscillating beam is stored into two types of potential energy~\cite{Kippenberg, Kotthaus}. A dissipative bending component and a...bachelor thesis 2019
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D Souza, Savio (author)Micro and Nano-mechanical resonators are becoming increasingly ubiquitous in the areas of particle characterization and biological sensing. For biological sensing, however, the presence of a liquid environment is a pre-requisite. Hollow cantilevers, which allow fluids to be transported inside the resonator, often have high quality factors even...master thesis 2018
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Kleinschneider, A.M. (author)Io, the innermost Galilean moon of Jupiter, is the most volcanically active body in the Solar System. Its volcanism is driven by tidal foces, which are in turn sustained by the Laplace resonance between Io, Europa, and Ganymede. Tides have significant impact on a body's characteristics. The liquid ocean underneath Europa's icy surface is...master thesis 2016
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Cartamil Bueno, S.J. (author), Steeneken, P.G. (author), Tichelaar, F.D. (author), Navarro Moratalla, E. (author), Venstra, W.J. (author), Leeuwen, R. (author), Coronado, E. (author), Van der Zant, H.S.J. (author), Steele, G.A. (author), Castellanos-Gomez, A. (author)Controlling the strain in two-dimensional (2D) materials is an interesting avenue to tailor the mechanical properties of nanoelectromechanical systems. Here, we demonstrate a technique to fabricate ultrathin tantalum oxide nanomechanical resonators with large stress by the laser oxidation of nano-drumhead resonators composed of tantalum...journal article 2015
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van der Enden, Kian (author)For quantum computing with superconducting qubits, fabricating transmon qubits with increased coherence time is crucial, especially in view of multi-qubit quantum processors. The fabrication process, geometries and materials used to fabricate a transmon qubit are similar to the fabrication of CPW resonators. However, due to shorter fabrication...bachelor thesis 2014
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Baart, T.A. (author)In this project two main goals have been pursued: (1) measure the Brownian motion of a magnetic force microscopy-tip (MFM-tip) using either standard optical interferometry or through transmission modulation of a tapered fiber, and (2) measure the mechanical properties (quality factor and resonant frequency) of mono-crystalline diamond resonators...master thesis 2011