Searched for: subject:"device"
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Wiering, Maik (author)
In this thesis, two new types of crystalline silicon texturization were developed, eventually aimed to be used in a triple junction solar cell from monocrystalline silicon and two thin film silicon alloy layers. The bottom of the two thin film silicon layers is made of hydrogenated nanocrystalline silicon (nc-Si:H). The current problem with this...
master thesis 2020
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Łoin, Michal (author)
Proper security mechanism are a crucial part of safe usage of Implantable Medical Devices. Multiple researchers presented various solutions to address this problem, basing them on different underlying principles. Within the scope of this thesis we perform a security analysis of the chosen authentication protocols. What is more, we present a new...
master thesis 2020
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Karras, Georgios (author)
For many maritime applications Li-Ion batteries are foreseen as energy storage units that can improve the performance of the on-board power system in terms of continuity of service, fuel consumption, emissions and running hours of main engines. However, one of main limitations of battery application in on-board power systems is the aging of...
master thesis 2020
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Roerink, Steven (author)
Multi-junction solar cells with Si alloys have true potential for high conversion efficiency, because of the spectrum splitting capability. For optimal spectral utilization, a multi-junction silicon based device needs a silicon alloy with a bandgap between that of nc-Si (1.1 eV) and a-Si (1.8 eV). a-SiGe:H has a tunable bandgap between 1.4-1.6...
master thesis 2019
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Filius, Suzanne (author)
BACKGROUND - In a variety of patients with locomotive disorders gait efficiency is often assessed using mobile metabolic gas analysis during rehabilitative interventions. Conventionally, these measurements take 6 minutes per evaluated condition (e.g. with/without ankle-foot-orthosis; AFO). This duration is required since there is a dynamical...
master thesis 2019
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Peeters Weem, Froukje (author)
Upper limb amputees, using a body-powered prosthesis, generate energy with their shoulders which leads to opening or closing of the prosthesis. The preference for one of these types, voluntary opening (VO) or voluntary closing (VC), differs for individuals and for task specifics. Research is, therefore, done regarding terminal devices which...
master thesis 2019
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Sharma, Nikhil (author)
Rising carbon emissions and the International Maritime Organisation (IMO) have put immense pressure on ship owners to make ships more efficient. One way to make ships more efficient is to install an energy saving device (ESD). ESDs are designed to perform at vessel’s design speed and design draft. Thus, there is abundant information available on...
master thesis 2019
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van der Plaats, Lisa (author)
The quality of rigid endoscopes deteriorates during clinical use due to the sterilization process, mechanical forces and wear and tear during regular use. Regulations and standards on ensuring the quality of these instruments are currently non-existent or contain only qualitative measures, resulting in subjective examinations . Defective rigid...
master thesis 2019
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Lyu, Dingsihao (author)
Because of its superior conduction and switching performance, and falling price, Gallium Nitride (GaN) power semiconductor device is expected to bring improvements to the power electronics system, including higher efficiency and higher power density. How will the new semiconductor device benefit the rapidly growing Electric Vehicle (EV) charging...
master thesis 2019
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Gurram, Nitin (author)
The learning curve of novice surgeons takes about 25 surgeries to be proficient at the knee replacement procedure. So it is not just enough if we design efficient and more ergonomic surgical tools, it is also important to provide a learning platform for them to get better before they operate on a real patient. Although many training simulators...
master thesis 2019
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Krijgsman, Laurens (author)
The technology used in health care is one of the fastest developing fields in Precision Engineering. The main focus in this field is on the development of steerable, small dimensioned instruments. Using these, surgeries can be done with minimal damage to the patient, shorter hospital stay and more aesthetical healing.<br/>From the medical field...
master thesis 2019
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van Hoek, Vincent (author)
This thesis describes the design of an ultra-low power temperature to digital converter. It is intended to monitor the excess heat produced during the wireless charging of implantable medical devices such as pacemakers. The TDC is designed to achieve an accuracy of ±0.1 °C (3 sigma) from 27 °C to 47 °C, and ±0.3 °C (3 sigma) from -40 °C to 85 °C...
master thesis 2019
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van der Velden, Gijs (author)
Organ-on-chip (OoC) devices are increasingly used for biomedical research and to speed up the process of bringing a medicinal drug from the lab to the market. The technology also addresses ethical issues linked to animal testing as it offers a reduction in animal experiments through its possibility to mimic the environment in the human body....
master thesis 2019
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Does, Luc (author)
In this thesis, the design and implementation of an improved current controller for grid-tied converters is discussed. Using this improved current controller, a power factor correction test platform achieves practically zero AC and DC error in steady-state. The power factor corrector accomplishes this by utilizing the parallel combination of a...
master thesis 2019
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Mulckhuyse, Joppe (author)
Objectives – Over the past decades, more and more cardiac diseases have been treated in interventional cardiology. Catheters are generally used to access the heart through the blood vessels. The previously developed steerable Sigma catheter at Delft University of Technology, tackles cable related challenges of conventional mechanically...
master thesis 2019
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Bisschop, Marc (author)
Implantable Medical Devices (IMDs) could fulfill many different functions in the human body. Batteries have always been the main power source of these devices. Batteries have some drawbacks, the biggest one being the replacement of IMDs with fully discharged batteries. In this thesis a wireless power transfer system, with a receiving power...
master thesis 2019
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Aydin, Mucahit (author)
This project is an initiative of the Department of Surgery in Maasstad Ziekenhuis. In the department, two types of patients undergo abdominal surgery: 1) mobile obese patients and, 2) patients with cancer. These types of patients need personal contact and guidance, especially patients with cancer. However, nurses are overwhelmed with work and...
master thesis 2019
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Smits, Roy (author)
With a fast growing world population, the lack of fresh water is one of the world’s biggest future concerns. Water stress can lead to conflicts, holds back economic growth and has a major impact on human health. Nowadays, more and more countries that lack fresh water sources are using the saline water from the oceans and desalinate it to produce...
master thesis 2019
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Ananth, Akilesh (author)
The use of esters as transformer insulation has been gaining increasing interest over the past few years because of their better environmental performance, higher resistance to the influence of moisture and for some particular liquids, higher flash point as well. However, in order to completely replace the traditional mineral oil and be...
master thesis 2019
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Bot, Fanny (author)
Indoor localization provides for a much researched subject, as the complexity and size of many public buildings require extensive and properly designed methods to facilitate location specific processes. Indoor localization entails finding a qualitative description of the occupied area, that is human interpretable, rather than a quantitative...
master thesis 2019
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