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Open Positions

Before you apply, please ensure that you understand the following points:


What's your motivation?

Your motivational letter is important. We do not accept generic applications starting with „Dear Sir or Madam“ referring to „the job offer found online“. Please specify what position you are applying for, why you are applying for it and why you think you would be a valuable addition to the team.


Interdisciplinary environment

We believe in interdisciplinary environments. When several disciplines join forces, great things can happen. Therefore you are expected to work and collaborate in this interdisciplinary environment. You should be open-minded about expanding the range of your knowledge beyond the boundaries of your own discipline and to interact productively with students, staff and lab members which are from a different academic background.



All jobs require a minimum duration of 3 months. We do not regularly offer shorter contracts.


Relevant documents

Make sure you attach all relevant documents (pdf format preferred)

  • Letter of motivation: Why do you apply for this position?
  • Curriculum Vitae
  • Academic track record (recent grades)
  • References

Send your application via email

Aktuelle Stellenanzeigen

PhD Position - Chemistry and Polymer Chemistry – Engineering of inks for MatrixPrint and Volumetric Printing

Our Lab

We offer a PhD Position at the young investigator group of Dr. Dorothea Helmer at the Freiburg Material Research Center (FMF) a central research institute at the University of Freiburg. Research foci of the group include material chemistry in combination with material structuring. Dr. Helmer is research group leader of the research group “MatrixPrint” which is part of the NanoMat Futur program of the ministry of research and education (BMBF). Dr. Helmer is also the leader of the group “material structuring and surface chemistry” at the NeptunLab of Prof. Bastian E. Rapp (IMTEK). Her work is published in the most important international journals including Nature and Science and has been featured in national and international radio and print media including the BBC, the New York Times and the Discovery Channel.


3D Printing is a very promising technique for material structuring in science and industry. The often-proclaimed “3D printing revolution” promises the easy fabrication of nearly arbitrary parts. However, today there are still three major issues in 3D printing that severely limit the versatility of the technologies: prints are slow due to the need for generating supporting structures around complex prints, different types of machines are required for each material class and and prints often lack precision on the micrometer scale. The project “MatrixPrint” is part of the BMBF NanoMat Futur programme and aims at developing solutions to these issues by combining the work of chemists, material scientists and engineers. The project aims at developing supporting matrices and corresponding inks for embedded 3D printing on a customized FDM-based platform. During the printing process, the ink is injected into the supporting matrix, which holds it in place, enabling true 3D prints. The group also investigates other support-free printing technologies such as volumetric printing methods like computed axial lithography (CAL). The combination of embedded printing and novel volumetric printing technologies light offer a promising way of combining

In this project, materials for embedded as well as volumetric 3D printing will be developed. Printing inks will be synthesized and analysed in terms of their properties. Different types of matrices will be developed, such as reusable or photocurable matrices. The printing inks are based on small particles of different material classes, such as metals, glasses and polymers. The particles will be dispersed in appropriate binders which can be polymerized by light. Matrices and inks will be tested for the use in embedded and volumetric 3D printing.


Activities and Responsibilities

  • Synthesis of printing inks for embedded and volumetric printing for metals, glasses and polymers
  • Synthesis and compounding of supporting matrices that can be polymerized by light
  • Analysis of support matrix particles and ink particles
  • Testing the performance of the developed materials in volumetric and embedded printing


Qualification Profile

  • Master’s degree and studies in chemistry, polymer chemistry or related subjects
  • Profound knowledge of microgels, interpenetrating polymer networks and photoreactions is required
  • Knowledge of particle analysis is beneficial.
  • Excellent academic track record
  • Excellent English skills in reading and writing
  • You should be a creative mind, developing your own ideas and willing to go the extra mile to generate outstanding scientific results
  • You should be a team player with ambitions who can conduct research projects independently
  • You should be able to structure and document your work properly


Wir bieten/Benefits

  • An aspiring young team with great emphasis on publications and publicity
  • An interdisciplinary work environment with a team of motivated scientists that strive to develop clever solutions for scientific as well as industrial problems
  • Well-funded projects with access to excellent state-of-the art infrastructure, generous lab space and scientific equipment
  • A lab structure that promotes the development of the individual members and fosters open-minded scientific discussions
  • A strong focus on the career development of the candidate including submitting to and attending relevant international conferences
  • An environment that supports start-up mentality – the NanoMat Futur Program aims at technology transfer
  • Payment of TV-L 13 75% (full time)
  • Depending on the performance of the candidate the PhD degree is generally finished within three years


Your Application

Please consult the “before you apply” section of our homepage


Make sure you attach all relevant documents (pdf format preferred)

Letter of motivation: Why do you apply for this position?

Curriculum Vitae

Academic track record (recent grades)



Do you have questions concerning this project or are you interested in collaborations, industry projects or seeking a PhD, intern or student position? Please get into contact with us.