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The Institute of Physical Chemistry in the Faculty of Chemistry and Pharmacy at the University of Münster, Germany, is seeking to fill the position in the research group of Prof Marcel Rey of a

Doctoral Research Associate (Wissenschaftlicher Mitarbeiterin, salary level E 13 TV-L)

for an externally funded project on the topic of "Shapemorphing colloidal particles". The position is available as soon as possible. We are offering a fixed-term part-time position (67%) for 3 years.

Your tasks:

• Construction of a custom inverted optical microscope with integrated laser illumination for the simultaneous deformation and imaging of shapemorphing particles
• ntegration and control of laser illumination, polarisation, and spatially structured illumination for the controlled manipulation of particle shape.
• Investigation of light-controlled self-assembly and phase behaviour of shapemorphing colloids at liquid interfaces using optical microscopy.
• Quantitative analysis of ordering transitions, defect dynamics, and shape-dependent structural changes using particle tracking and image analysis
• Quantification of shape-dependent particle interactions at liquid interfaces using optical tweezers
• Documentation and presentation of results at scientific conferences.
• Publication of results in scientific journals
• The position is tied to working towards a doctorate.

Our expectations:

• A university degree (Master’s/Diploma) in Chemistry, Physics, Materials Science, or a related field is required.
• We are looking for a committed, motivated, and team-oriented individual who is characterized by an independent working style
• Proficiency in English, both spoken and written.
• Experience with project-related topics is desirable but can also be acquired during the PhD. These include
• Experience in optics, laser optics, and microscopy.
• Experience in the construction and alignment of optical systems.
• Experience with optical manipulation and/or optical tweezers.
• Experience in image analysis and particle tracking.
• Experience with colloidal systems or soft matter.

Advantages for you:

• Appreciation, commitment, openness and respect – values which are important to us.
• Our broad range of diverse work-time models offers great flexibility – also when working from home.
• If you have family members or young children in your care, our offers concrete support to help you balance your private and professional responsibilities.
• As an educational institution, we are deeply committed to offering opportunities tailored to your individual needs.
• From A – Z, Aikido to Zumba, our ensure a healthy work-life balance.
• As a university employee, you are entitled to numerous benefits afforded to public servants, e.g. an attractive company pension scheme (), an and a position that is shielded from economic fluctuations.

The University of Münster strongly supports . We welcome all applicants regardless of sex, nationality, ethnic or social background, religion or worldview, disability, age, sexual orientation or gender identity. We are committed to creating family-friendly working conditions.

We actively encourage applications by women. Women with equivalent qualifications and academic achievements will be preferentially considered unless these are outweighed by reasons which necessitate the selection of another candidate.

For the application task, please read the following paper:

As part of the PhD project, we aim to investigate and control the light-induced deformation and self-assembly of photoresponsive colloids in situ at liquid interfaces using spatially structured illumination.

Propose an optical microscopy setup and sample cell that enable simultaneous imaging and controlled deformation of the particles using polarised light.

Briefly describe and justify your proposed setup. A schematic of the optical setup is encouraged. Relevant literature may be cited.

Have we sparked your interest? If so, we look forward to receiving your application via the online application tool BITE by 2026-09-30.

Please submit the following documents:

• CV
• Certificates
• Application Task – Optical Microscopy (approximately 1 page)

Please submit all documents electronically in PDF format. Other file formats cannot be considered.

Universität Münster

Institut für Physikalische Chemie

Prof. Dr. Marcel Rey

Corrensstraße 28/30

48149 Münster

Reference number: 2026_08_22