PhD Candidate / PhD Candidate (female)

PhD Position in Numerical and Experimental Studies of Non-Spherical and Deformable Granular Systems

100%, Zurich, Fixed-Term

ETH Zurich is one of the world's leading universities, renowned for its excellence in education, cutting-edge fundamental research, and efforts to seamlessly integrate new knowledge and innovations into practice. The Laboratory of Energy Science and Engineering (D-MAVT) actively develops numerical and experimental tools to explore single- and multiphase granular (particulate) systems.

Project Background

Granular systems are prevalent in nature—seen in phenomena such as rock avalanches and dunes—and are crucial to various industrial applications. Despite their significance, many key phenomena, such as segregation, surface instabilities, and jamming (the transition from a fluid-like state to a solid-like state), remain poorly understood. This project specifically investigates the effects of particle deformability and non-sphericity on the dynamics and rheology of granular systems. Flexible particles deform under stress, leading to intricate interactions that affect contact forces and stress transmission. These complexities can result in rheological phenomena, such as transient jamming or stress-induced orientational ordering. Although deformable, non-spherical particle systems are expected to exhibit rich physical behaviors, they have largely been overlooked due to the challenges associated with experimental measurements and numerical descriptions.

This PhD position is part of a collaborative project combining the expertise of two research groups: the Laboratory of Energy Science and Engineering led by Prof. Müller, and the Institute for Biomedical Imaging Magnetic Resonance Technology, headed by Prof. Prüssmann. The PhD students from both groups will collaborate closely on a daily basis.

Job Description

The primary objectives for the PhD student at the Laboratory of Energy Science and Engineering include:

• Advancing numerical tools to model non-spherical and deformable granular systems.
• Establishing camera-based experimental techniques, such as photo-elasticimetry, to determine contact forces and stress fields in such systems.
• Developing and employing machine-learning-based models to correlate particle deformation and contact forces in 3D systems.

Profile

• Applicants are expected to hold a Master's degree (MSc) in Mechanical Engineering, Physics, or related disciplines.
• Previous experience in numerical modeling or imaging techniques is advantageous.
• We seek highly motivated, creative individuals who excel in teamwork and possess excellent communication skills in English, both spoken and written.
• The candidate will have a unique opportunity to enhance their research abilities within a top-tier research environment.
• The position is available from July 2026 onwards.

Workplace

The position will be based in Zurich, a vibrant city known for its innovation and quality of life, fostering a rich research environment.

We Offer

• An exciting working environment.
• Access to cutting-edge techniques and methodologies.
• Opportunities for career development.
• A diverse and interdisciplinary team.

We Value Diversity and Sustainability

In line with our values, ETH Zurich encourages an inclusive culture. We promote equality of opportunity, value diversity, and nurture a working and learning environment where the rights and dignity of all staff and students are respected. Visit our Equal Opportunities and Diversity website to learn about how we foster a fair and open environment that supports personal growth. Sustainability is a core principle for us, as we continually strive towards a climate-neutral future.

Curious? So Are We!

Apply online using the form below. Only applications matching the job profile will be considered. We look forward to receiving your application, which should include:

• Motivation letter
• CV
• Transcripts
• Names of two potential reference providers

For further information about the Laboratory of Energy Science and Engineering, please visit our website. For questions regarding the position and recommendations, please contact Prof. Christoph Müller at muelchri@ethz.ch.

About ETH Zurich

ETH Zurich is a premier institution specializing in science and technology. We are celebrated for our outstanding education and groundbreaking research, making significant impacts through the direct transfer of new knowledge into society. With over 30,000 individuals from more than 120 countries, our university fosters independent thought in an inspiring environment. Located in the heart of Europe, we collaborate globally to develop solutions for today’s and tomorrow’s challenges.