Snap-shot hyperspectral CARS imagery at fuel production and combustion systems


In this proposal I introduce innovative snap-shot hyperspectral CARS imagery, with unprecedented simultaneous resolution in space, spectrum, and time. This major advance within optical spectroscopy/microscopy techniques will deliver powerful examinations of temperature and chemical composition in rapid gas-phase reactive- and soft condensed media. This new optical diagnostics platform will be intensively validated for two application fields, geared at solving difficult and important problems in biofuel production and combustion systems. In the microbial production of biofuels, it will lead to improved understanding on the secretion mechanism in-situ and its role in product droplet stabilization. This developed snap-shot hyperspectral CARS wide-field microscopy, with excellent chemical contrast and rapid detection of biomolecules, will monitor the initial stage of the oil-droplet formation at video-rates and will provide new insight into this mechanism. In another application I propose powerful CARS imagery tailored at developing new combustion technology with reduced emission of pollutants. One promising combustion mode to reduce NOx emission is Flameless Combustion (FC), where the effect of vitiation on ignition kernels and flame propagation is still poorly understood. In this proposal, I will develop a new precision benchmark of ~1% in single-shot spatially-correlated high-repetition-rate gas-phase thermometry, as a unique tool to investigate the stability of the FC mode. I propose new strategy, to examine synthesis of biofuels and the incorporation of non-conventional fuels in combustors with the same spectroscopy / microscopy technique. It is expected to lead to a well-integrated perspective of these complex systems. The ultimate goal of this research is to progress fundamental understanding in combustion modes for reduced emission, and to boost the control of fermentation reactions of the bioreactor, leading to a further step-in-progress towards a carbon-neutral energy supply.


Project number


Main applicant

Dr. G.A. Bohlin

Affiliated with

Technische Universiteit Delft, Faculteit Luchtvaart- en Ruimtevaarttechniek, Departement Aerodynamics, Wind Energy, Flight Performance and Propulsion

Team members

Dr. G.A. Bohlin


01/09/2017 to 31/08/2022