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/Job opportunities/Photochemistry of materials for super-resolution nanoscopy and nanolithography

Photochemistry of materials for super-resolution nanoscopy and nanolithography

Master projects/internships - Leuven | More than two weeks ago

Image things that are too small to see with optical imaging. Extend optical resolution to features that are significantly smaller than the illumination wavelength. 

We are researching super-resolution imaging techniques for both nanoscopy and nanolithography. Materials that do this can be excited by one wavelength by absorbance and deactivated by another wavelength of light through a process of stimulated emission. In the ideal situation, they can be preactivated to a stable high energy state that is decoupled from the initial excited state by one wavelength and then manipulated to deactivate from the new state by another wavelength or, in the case of lithography, driven to the desired photoproduct by a third wavelength. Using this technique requires surrounding an activated exposure area by a deactivated area. Increasing the intensity of the deactivation energy makes the activation area smaller than the typical spot size of an imaging system. This small pixel can be scanned to act as an optical probe to define a high-resolution image that can be 20 to 100 times smaller than the activating light. This research is to identify desirable material characteristics, find or make them and then characterize and test them. Lab work and microscopy will be done at KUL and at imec as appropriate.

Type of Project: Thesis 

Master's degree: Master of Science 

Duration: 1 year 

Master program: Chemistry/Chemical Engineering; Nanoscience & Nanotechnology 

KU Leuven supervisor: Stefan De Gendt

Supervising scientist: John Petersen

For further information or for application, please contact John Petersen (


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