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PhD Position on Optical Trapping in Photonic Crystal Structures

EPFL is pleased to invite applicants to apply for a PhD position. This fellowship is available for all students around the world. Applicants should apply as soon as possible.

A PhD student position is available at the Photonic crystal group in the Institute of Physics in the fields of optical tweezers and planar photonic crystals. Planar photonic crystals consist of 100 nanometer sized arrays of holes etched in a planar semiconductor waveguide. These structures allow the control of the electromagnetic field at the wavelength scale. They can be designed in a way that a resonant optical field extends mainly outside of the dielectric medium and can be used to optically trap particles.

The present activities of the group in this field concern the very specific physics of the optical trapping in these structures where there is a very strong feedback action of the trapped particle on the resonant trapping field; the use of such structures to trap particles in vacuum; applications in biophotonics involving optical trapping of viruses or bacteria and their interaction with e.g. antibiotics or bacteriophages.

The subject of the thesis will concern some theoretical but mainly experimental aspects with a special emphasis on one specific point such as processing, optical measurements or photonic crystal structure design. Prior knowledge or a strong interest for at least one of the following topics is a prerequisite : photonic crystal, optical trapping, experimental lab work in optics, semiconductor processing, microfluidics.

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