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Habbal, Samer (author)In the era of advancing technology, the demand for specialized engineering materials has risen significantly. Active Mechanical Metamaterials (AMMs) offer a novel approach to engineering materials with tunable mechanical properties. This research focuses on developing tunable damping active mechanical metamaterials (AMMs) by incorporating...master thesis 2024
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Schouten, Koen (author)Materials and material structures with highly specialised and unique mechanical properties are sought after in order to gain the most performance from a system. Materials generally have fixed mechanical properties and are unable to adapt in the case of new or unforeseen situations. Active mechanical metamaterials are able to alter the...master thesis 2023
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Mian, Osama (author)Vibrations have been studied in various engineering fields due to their detrimental and even destructive effects on structures. Suppressing low-frequency vibrations has been a research challenge for decades and is mostly achieved by implementing active vibration control techniques. In the last two decades, the emergence of locally resonant...master thesis 2023
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van Zee, Tim (author)Surface-enhanced Raman spectroscopy (SERS) is a powerful non-destructive molecule identification technique. The technique is made viable by the enhancement of the Raman effect which is caused by metallic nanoparticle (MNP) structures. A fabrication method that can manufacture highly consistent SERS substrates is important. Aerosol Direct Write ...master thesis 2023
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Jaarsma, Victor (author)This research investigates the implementation of electroactive polymer (EAP) actuators for the propulsion of a robotic fish. An efficient manufacturing procedure is developed which uses a combination of stencil printing and inkjet printing to manufacture P(VDF-TrFE-CTFE) actuators. The influence of layer thicknesses is studied theoretically and...master thesis 2023
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Soors, Aurelie (author)In up to 39% of reduced distal radius fractures, re-displacement of the fracture occurs in the cast. In most cases, the cast becomes too loose as soft tissue swelling decreases over time and the cast no longer provides sufficient support to keep the fracture reduced. This issue could be addressed by introducing a smart memory cast, a cast that...master thesis 2023
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Guurink, Koen (author)Building a distributed fluidic actuation system is a challenge due to every actuator needs its own control valve. Due to this, an n by an array of actuators needs n 2 number of valves. A logic network of valves provides a solution by reducing the number of valves needed to operate such distributed fluidic actuation system. These compliant...master thesis 2023
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IJssel de Schepper, Stijn (author)Unlike conventional actuators, unimorph bending cantilever actuators rely on deformation of bulk material, and therefore require no complex mechanisms or moving components. This allows for simple fabrication, and makes them suitable for miniaturisation. This enables various applications not feasible or practical with conventional actuators,...master thesis 2022
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Bos, Joris (author)Electroactive polymers (EAPs) are smart materials that have electromechanical and mechanoelectrical transduction properties. They are flexible, lightweight, easy to shape and cheap to produce. These properties allow EAPs to be used as actuators or sensors in applications such as soft robotics, metamaterial structures, or other future...master thesis 2022
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de Jong, Kees (author)Shape changing active metamaterial could form the structural backbone of an object as well as deliver the actuation. The integration of these two functions saves design space and allows for creative topologies. The literature study of this thesis investigated smart material actuator solutions that could be used to enable such active...master thesis 2022
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Shan, Jichao (author)Proteins play a key role in many biological processes and are thus useful indicators of health and disease states. Since the size of proteins is few hundred nanometers, it is necessary to explore new techniques to manipulate and 'read' them. This thesis aims to identify and build a platform that enables sub-micron bead manipulation, which will...master thesis 2022
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Wu, Yantong (author)This thesis aims to solve the problems and fabricate fully inkjet-printed dielectric elastomer actuators with silver electrodes and a PDMS middle layer. First, a conductive silver electrode is printed on a coated PET substrate, followed by a printing of the dielectric elastomer middle layer to cover the bottom electrode. Then, the top silver...master thesis 2022
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Kos, Willem (author)Airbrushing is an affordable contactless printing technology capable of spraying fine lines to large areas with minimal adjustments. In the literature, deposition of conductive inks on substrates has primarily been researched using inkjet printing or direct ink writing. Despite its advantageous features, airbrushing is seldom used, and when so,...master thesis 2022
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van Esch, Pepijn (author)Integrated operating rooms (OR) have shown to be promising in meeting the challenges created by the increased complexity in the OR, by improving the quality of care, simplifying the clinical workflows, and reducing equipment-related incidents and surgical errors. Although several systems that integrate medical devices have been developed,...master thesis 2022
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Saravana Jothi, Navin Shankar (author)Metamaterials are engineered structures that exhibit exotic properties that are obtained from the unit cell geometry and arrangement instead of its constituent materials. Mechanical metamaterials alter mechanical stimuli and they can exhibit unique elastic properties such as negative stiffness, shear modulus, bulk modulus, and Poisson’s ratio....master thesis 2021
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SEKAR, SANJAY ARUN (author)By embedding actuators and sensors in passive structures, it will be possible to realize more functional machines, enabling the enhanced performance capabilities of high-tech machines. While developments in printed structures and electronics are reaching application maturity, only the first signs of feasibility for the printing of actuators and...master thesis 2021
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Uitermark, Evita (author)Heart failure, caused by a weakened heart muscle that is not able to pump enough blood through the entire body, causes many deaths worldwide. The current heart assist devices designed to treat this acute condition cause a myriad of life threatening complications mainly caused by direct contact with the circulatory blood. A new generation of...master thesis 2021
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Thomas, Dexter (author)The concept of metamaterials has been extended from electromagnetics and acoustics to the field of mechanics. Metamaterials do not derive their properties from those of the composite, but from the artificial meso-scale geometry as well as from the unit cell structure. Mechanical metamaterials are constrained in that the mechanical properties are...master thesis 2020
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Gandhi, Mridul (author)The precision, speed, and stroke of mechatronic machines need continuous improvement. Compliant mechanisms are widely used in the precision machines, but they do not have larger strokes due to their limited deformation. In the present time, various applications also require high speed and more problems appear due to the dynamics of the compliant...master thesis 2020
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Bälz, Koona-Garth Keith (author)Inkjet printing offers an additive manufacturing method for the production of thin films. A variety of inkjet printed materials can be printed, including conductive and electroactive materials. Existing inkjet printed ferroelectric polymer actuators all utilize silver conductive layers and P(VDF-TrFE) for the electroactive layer. This thesis...master thesis 2019