Aragokamer

De Aragokamer is momenteel gesloten.

Afstuderen (MSc)

Homepagina | Afstuderen (MSc) | Stages | PhD Vacatures | Overig


 

Afstuderen (MSc) bij IMS – Functional Optoelectronic Materials group

Available immediately (July 2018)

Material Discovery for Transparent P-Type Electrodes
*Option for Capital Selecta course: Introduction to Optoelectronic Materials (5 EC).

Project motivation: Metal oxides (MOx) are essential in several optoelectronic devices, such as thin film-based solar cells, displays and light emitting diodes. However, most conductive MOx are n-type. If a p-type counterpart is found, novel functionalities can be unlocked, such as the development of semi- or fully-transparent electronic devices, or the replacement of absorbing contacts in solar cells (Ref. M. Morales-Masis et al. Adv. Electron. Mater. 3 (2017)).

Project goal: Demonstrate experimentally recent theoretical predictions (Ref. G. Hautier et al. Nat. Commun. 4, 2013) that indicate that a transition from a metal oxide (MOx) to a metal oxysulfide (MOySz) or metal sulfide (MSx) leads to a transition from a n-type to p-type material.

Tasks of MSc student: Metal oxide thin films (SnOx, ZrOx) will be deposited by pulsed laser deposition (PLD), followed by a thermal sulfurization step. Optical and electrical characterization of the film’s properties as a function of oxygen and sulfur concentration will be performed and used to propose a model for carrier transport in the films.

Contact:
Monica Morales-Masis, CR 3237, m.moralesmasis@utwente.nl, +31534891791
https://www.utwente.nl/en/tnw/ims/

Solution-Processed High-Mobility Transparent Contacts for Solar Cells
*Option for Capital Selecta course: Introduction to Optoelectronic Materials (5 EC).

Project motivation: Broad-band transparent and high-mobility transparent conducting oxides (TCOs) are required to maximize light absorption and electrical performance in solar cells. Gentle deposition techniques for the TCOs are required to avoid thermal or physical damage to the substrate or layers underneath, for example, during the deposition of the front TCO in solar cells (figure below) (Ref. M. Morales-Masis et al. Adv. Electron. Mater. 3 (2017)).

Project goal: synthesis of high mobility, wide band gap indium-based TCOs (H-doped In2O3, Zr-doped In2O3) thin films by chemical solution process. Films will be compared to PLD-grown films, to assess material quality, microstructure, dopant efficiency and carrier transport properties.

Tasks of MSc student: the films will be grown by chemical bath deposition (CBD) (or alternatively from nanoparticle-based solutions), and characterized by temperature-dependent Hall effect measurements, UV-Vis-NIR spectrophotometer, X-ray diffraction, AFM. Experimental data will be used to propose a carrier transport model. Application on proof-of-concept solar cells is also foreseen.

Contact:
Monica Morales-Masis, CR 3237, m.moralesmasis@utwente.nl, +31534891791
https://www.utwente.nl/en/tnw/ims/


 

Afstuderen (MSc) bij MSS (EWI/EEMCS)

Background
In the last 50 years the composition of natural gas in the Dutch gas grid was very constant. It is expected that the gas quality
bands are going to vary much more due to changes of the main gas supply streams, i.e. the introduction of biogas in the
gas grid will also lead to broadening of the gas quality bands. Although the used volume of biogas is relatively low, it can
cause variation because the gas quality of biogas varies periodically. This can cause a shift in the currently existing paradigm
of paying per cubic meter of gas (€/m-3) to paying per mega Joule of heat generated per cubic meter of gas (€/mJ/m-3).

Contact information
Supervisor: Dr. ir. Remco Wiegerink (r.j.wiegerink@utwente.nl)
Daily supervisor: Ing. Henk-Willem Veltkamp, MSc (h.veltkamp@utwente.nl)

MSc thesis – Catalytic microscale combustion

Project
The project, of which you become a part, aims at the realization of a miniaturized Wobbe index meter for
the measurement of the energy content of fuel gases in a single silicon chip. Fuel gas and air are mixed in
this chip and heated up to ignition temperature, resulting in spontaneous combustion:

CH4(g) + 2 O2(g)  CO2(g) + 2 H2O(l)

The combustion energy is estimated from the resulting elevation in temperature and, combined with
density and flow rates measured by integrated micro Coriolis mass flow sensors, the Wobbe index can be
calculated. The μWobbe index meter can replace existing bulky and expensive Wobbe index meters (see
image) and enables gas monitoring at the central heating system of the consumer’s home.
Your MSc thesis is all about how the flame propagation and the formed combustion products relate to the gas flow rates.
This will be done by performing a thorough literature study on microscale combustion, the thermodynamics, radicals and
quenching, and by performing combustion experiments inside quartz capillary and analyzing the combustion products.
When time allows, there is also the possibility to look into catalytic combustion.
Your project will be performed in the Micro Sensors and Systems group of the faculty EWI/EEMCS:

https://www.utwente.nl/ewi/mss/

You will work closely together with your daily supervisor and one other PhD student, who are both working on the STW
project “Integrated Wobbe Index Meter”.

Tasks
Summarized, your assignment consists of the following tasks:
– Literature study on micro/mini scale combustion, including thermodynamics, radicals and possible quenching;
– Building an experimental setup for combustion experiments in fused silica capillaries/tubing;
– Performing combustion experiments, i.e. measuring the flame velocity;
– Measuring the combustion products via a suitable method;
– Literature study on combustion catalysts;
– Applying a catalyst inside the quartz capillary and measuring the formed (catalytic) combustion products.
– Analyzing data and proposing relationships between flow, tube/capillary diameter, temperature, flame velocity,
combustion products, etc.
And when time and one’s background allows:
– Development of a COMSOL model including the CFD, heat transfer, and combustion reaction;

Profile
Are you a master student with a chemical and/or physics background (Chemical Engineering, Applied Physics,
Nanotechnology) and currently looking for a MSc thesis topic, then maybe this is a suitable topic for you.

MSc thesis – Catalytic microscale combustion

Project
The project, of which you become a part, aims at the realization of a miniaturized Wobbe index meter for
the measurement of the energy content of fuel gases. Fuel gas and air are mixed and heated up to ignition
temperature, resulting in spontaneous combustion:

CH4(g) + 2 O2(g)  CO2(g) + 2 H2O(l)

The combustion energy is estimated from the resulting elevation in temperature and, combined with
density and flow rates measured by integrated micro Coriolis mass flow sensors, the Wobbe index can be
calculated. One of the possible directions is a device 3D printed in ceramic material (Al2O3). This device
can replace existing bulky and expensive Wobbe index meters and enables gas monitoring at the central
heating system of the consumer’s home.
Your MSc thesis is all about designing and testing such a device. Examples of things that need to be taken into account are
optimal mixing strategies, implementation of heaters and sensors, heat transfer through the device and analysis of
combustion products. When time allows, there is also the possibility to look into catalytic combustion and methods how to
combine this with the 3D printed device.
Your project will be performed in the Micro Sensors and Systems group of the faculty EWI/EEMCS:

https://www.utwente.nl/ewi/mss/

You will work closely together with your daily supervisor and one other PhD student, who are both working on the STW
project “Integrated Wobbe Index Meter”.

Tasks
Summarized, your assignment consists of the following tasks:
– Literature study on micro/mini scale combustion;
– Modelling different geometries for mixing and heating;
– Designing a 3D printed Wobbe index meter;
– Investigate how to print such a device in ceramic material (together with a company, since we don’t have the
experience);
– Performing combustion experiments in this 3D printed device;
– Measuring the combustion products via a suitable method;
– Analyzing data and proposing relationships between flow, temperature, combustion products, etc.
And when time and one’s background allows:
– Literature study on combustion catalysts;
– Applying a catalyst in the 3D printed device and measuring the formed (catalytic) combustion products.

Profile
Are you a master student with a mechanical engineering, chemical engineering and/or physics background and currently
looking for a MSc thesis topic, then maybe this is a suitable topic for you.


 

High Tech Systems and Materials Masters Honours Programme

• Are you looking for an extra challenge on top of your Master’s degree?

• Would you like to be trained by excellent scientists and optimize your chances on a high profile industrial or PhD position?

• Would you like to deepen your knowledge of your own field, yet also join forces with students from other (technical) disciplines?

• Are you up for challenging real-life product development assignments together with one of our industrial partners?

Then the HTSM Master’s Honours Programme is just what you are looking for!

The Universities of Groningen and Twente – in cooperation with Astron, BD Kiestra, Innovatiecluster Drachten and Philips Consumer Lifestyle – offer talented, motivated students the opportunity to challenge themselves with this unique extra-curricular Master’s Honours Programme.

For whom?

The highly selective admission procedure is open to students from both the University of Groningen and the University of Twente. Talented, ambitious students from the following course programmes are welcome to apply:

• (Applied) Physics

• Chemistry

• Chemical Engineering

• Industrial Engineering and Management

• Industrial Design Engineering

• Mechanical Engineering

• Electrical Engineering

• Computer Science

• Artificial Intelligence

• Human-Machine Communication

• Other science studies with a clear technical component applicable to the HTSM sector, such as mathematics, biomedical engineering, life sciences & technology and molecular biology.

Selection criteria

• A Bachelor’s degree by 1 September with good to excellent results, including a Bachelor’s thesis marked above average.

• Good oral and written skills in English (TOEFL 580).

• Highly motivated toward the focus of the programme: multidisciplinary, innovative, high tech product development.

• Able to pair a great intellectual ability with technical skills and interests.

• Specific personal qualities (innovative, independent, creative, original, proactive and persevering).

• Motivated and able to collaborate with other (technical) disciplines in multidisciplinary teams.

• The desire to widen your knowledge beyond the borders of your own discipline and beyond technical and non-technical borders.

 

More information about the programme and selection procedure is available on the following website: www.rug.nl/honours/htsm-masterprogramme