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Institute of Solid State Physics
A bachelor project serves as an introduction to scientific research. During this project, 4 weeks are spent in a research laboratory (150 hours, 6 ECTS). At the conclusion of the research, a report about the results is written and a 20 minute public presentation is given. The time necessary to write the report and prepare the presentation are included in the 150 hours.
A true scientific publication must be original work; it should describe scientific results that have never been reported before. Ideally, a bachelor report should have the character of a scientific publication. A bachelor report is not intended to be a review of work done by others.
A scientific publication should begin with a short and clear description of what was done, why it was done, and what the main results are. It is not a novel where the reader should be kept in suspense until the last page. Tell the ending on the first page and then use the rest of the report to fill in the details.
After the initial statement of your own results, give the reader some background information. All scientific projects build on the work of others. You should make it clear what the state-of-the-art was at the start of your project. This section should be brief, no more than about 3 pages. Provide the reader with references to books or articles that describe your research topic in more detail.
The bulk of a bachelor report should contain a discussion of the scientific issue you attempted to resolve, the methodology you used, a presentation of the data, and a discussion of the results. The recommened length of the report is 15-25 pages.
The TU will scan all master and PhD theses electronically for plagiarism. While there is currently no plan to systematically scan the bachelor theses, everything in electronic form might be scanned at some time. It should be clear from the way the references are placed which ideas you claim as your own and which you have taken from others.
To protect the privacy of students, the university does not publish a list of student names or email addresses. However, when a bachelor student works in our institute, we typically list their names and email addresses on our institute website. This makes it easier for members of the institute to contact each other. If you do not want to be listed on the website, please inform the secretary when your project starts.
A list of possible bachelor projects is given below. There is a certain flexibility in defining bachelor projects. You may propose the topic of a bachelor project to a member of the scientific staff. If you have questions about bachelor projects at the Institute of Solid State Physics, please contact Peter Hadley.
Some bachelor reports that have been completed in our institute can be found here.
Richtlinien zur Erstellung einer Bachelorarbeit im Bachelorstudium Technische Physik
Structural investigation of paper sheets by x-ray microtomography
Every paper sheet consists of a hierarchical structure. This structure starts at the molecular level where cellulose molecules form a polymer chain. The combination of the polymer chains eventually produces a paper fiber, which in turn forms a network that is more commonly known as sheet.
Molecular Packing Determination on Basis of Molecular Dynamics Simulations
Structure Search At Interfaces / Machine Learning
We are currently developing our own algorithm to determine the geometric structure at inorganic/organic interfaces. This program (SAMPLE / Surface Adsorbate Polymorph Prediction with Little Effort) employs machine learning techniques to establish the potential energy surface of complicated systems based on only a small number of highly accurate density functional theory calculations. We are looking for highly motivated Bachelor students that are interested in computational physics, programming or method development and that would like to tackle projects which are directly relevant for our current research efforts. No specific skills or knowledge is required, but familiarity with Linux and basic programming experience (ideally Python) is recommended. Available topics include:
Measurement of Nanoparticle transport through sack paper
In the course of this work a measurment system developed by Prof. Bergmann from the Institute of should be used to measure transport of different kinds of nanoparticles through sack paper samples.
Computational project: Surface Polymorph Formation
Thin film and monolayers of organic molecules assume morphologies that do not occur in the bulk material, but exhibit properties that are superior for certain applications. Whether such surface-induced phases form depends strongly on the substrate used as well as the deposition conditions. In this computational project, we will study how different external factors, such as the dielectric constant of a solvent or the electron chemical potential (i.e., the Fermi-level) provided by the substrate, affects the relative stability of experimentally known bulk- and surface-induced phases. The target of this work is to identify systems that are particularly sensitive and will be used for further research in the group.
Measuring the doping concentration in semiconductor devices
Most semiconducting transistors contain regions that have been doped n-type and regions that have been doped p-type. In this project, capacitance-voltage measurements will be used to determine the doping concentrations od diodes, MOSFETs and JFETs. To quantify the measurement errors that are made, the frequency dependent noise behavior of the current preamp will be measured and a Fourier analysis of the noise will be performed. The instruments will be controlled with a Python script. Contact email@example.com
Electrostatic design of novel materials
Organische Halbleitermaterialien sind eine viel versprechende Materialklasse für Anwendungen im Bereich von Bildschirmen, Raumbeleuchtung, Solarzellen, elektronischen Bauelementen, Sensoren, aber auch molekularer Elektronik. Eine große Stärke der organischen Halbleitermaterialien ist dabei, dass sich ihre Eigenschaften effizient durch chemische Variation der Struktur der verwendeten Moleküle verändern lassen.
Im Rahmen der hier vorgestellten Bachelorarbeit(en) [zum beschriebenen Themenkomplex lassen sich mehrere, voneinander unabhängige Projekte definieren] soll mit Hilfe quantenmechanischer Simulationen (unter Verwendung existierender Codes) untersucht werden, inwiewit auch "physikalische Effekte" zu einer gezielten Steuerung der Materialeigenschaften eingesetzt werden können. Dazu soll durch den Einbau wohl definierter dipolarer Gruppen in verschiedene Moleküle die Potentiallandschaft, die die Elektronen in den Materialien "spüren", gezielt manipuliert werden.
Kontakt: Egbert Zojer
Fabrication and Characterization of organic photovoltaic cells
The reliable and cost-efficient manufacturing of organic photovolatic cells is the prerequisite for their potential application in industrial photovoltaics. Highly efficient double-layer cells can be fabricated by sequential dip-coating of differently solvable conjgated polymers. The power efficiency of such cells can be optimized by an electronic tuning of the polymer thin films either by doping with fullerene type dopants or by the coplymer blend technique. This new organic photovoltaic cells are characterized concerning their essential parameters. Contact: firstname.lastname@example.org
Growth and Characterization of functional organic thin films by dip-coating
Dip-coating is an overlooked high-tech approach to manufacture highly controlled and defined thin films of conjugated polymers. The precondition for a successful application of this technique is the basic understanding and control oft he deposition process and a deeper understanding of the nature of the film forming parameters. Prestudies support the high potential of this thin film technique with the perspective of application for large area manufacturing for organic electronics and organic optoelectronics. Contact: email@example.com
Growth and Characterization of New Organic Single Crystalline Semiconductors
The packaging of organic molecules in the crystal structure is the base oft he resulting electronic bandstructure. To modify and tune the physical properties like carrier mobility it is required to tune the bandstructure. This is targeted by the application of new conjugated organic molecules, which are grown into single crystals. The crstal structure is determined based on x-ray diffraction experiments in collabroation with the chemistry department of the TUGraz. Contact: firstname.lastname@example.org
Quantum-Cascade Lasers for state-of-the-art Spectroscopy
Quantum-Cascade Lasers (QSL) are a new and high-tech approach in the area of mobile spectroscopy. The strongly icreasing demand in the segments like enviromement (water and air quality), health (near patient testing) and food control, to name a few, is met by the availablity of new spectroanalytic strategies. Du to their wavelength tunability, QSL offer the opportunity to collect spectra of gases, liquids and solids without the need of dispersive element (grating, prism). A series of bachelor projects is offered in this area.