Biomolecules can be detected by coupling to the evanescent field of high-Q resonators thus changing the resonance frequency of the later. The aim is to test, model and functionalize arrays of microdisc resonators for massively parallel and highly sensitive detection of biomolecules.
Contact:
Prof. Dr. Heinz Kalt
E-Mail
Single-walled carbon nanotubes have either metallic or semiconducting properties depending on their geometric structure (= chiral angle). Semiconducting nanotubes luminesce in the near infrared when individually dispersed in non-quenching environments. This emission can be used as a tracer for mechanical strain as well as chemical change. The thesis project will involve implementation of a confocal microscope imaging system to work in the spectral range 800 - 1400 nm. The imaging system will be used to study nanotube mass transport in various microfluidic setups as well as to study the fluorescence of nanotubes in living.
Contact:
Prof. Dr. Manfred Kappes
E-Mail
Prof. Dr. Martin Bastmeyer
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Electronic spins can be injected with high fidelity into semiconductor quantum dots for possible applications in quantum information processing. The aim is to optimize this spin storage by investigation of spin relaxation mechanisms, to address and manipulate the spin states in individual quantum dots and to couple them mutually.
Contact:
Prof. Dr. Heinz Kalt
E-Mail
Ion trapping allows the study of molecular ions over long time periods free of matrix effects. This is useful in order to probe the fundamental photophysics of fluorescing molecules. We have recently constructed an apparatus which allows emission wavelength resolved fluorescence measurements on ca. 105 trapped ions which are generated by electrospraying from solution. The thesis project will involve studying the role of vibrational temperature and solvent complexation on the emission properties of a series of organic chromophores - also including biochemically relevant species such as peptides and dye-labelled DNA oligonucleotide multianions.
Contact:
Prof. Dr. Manfred Kappes
E-Mail
New combustion strategies are necessary for modern combustion engines to reduce fuel consumption and emissions.Optical analysis and diagnostic tools offer excellent prospects to analyse and improve combustion and other incylinder phenomena in combustion engines. The main focus of this work is to apply and improve optical analysis methods in engines and to enhance comprehension of combustion processes as well as to increase efficiency and to reduce emissions.
Contact:
Prof. Dr. Ulrich Spicher
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