PhD Candidate / PhD Candidate

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, state-of-the-art research, and commitment to translating knowledge and innovations directly into practice. The Laboratory of Energy Science and Engineering (D-MAVT) is actively engaged in developing numerical and experimental tools to investigate single- and multiphase granular (particulate) systems.

Project Background

Granular systems are ubiquitous in nature, found in phenomena such as rock avalanches and sand dunes, and are of fundamental importance to numerous industries. However, many critical phenomena, including segregation, surface instabilities, and jamming (the transition from fluid-like to solid-like states), remain poorly understood. This project specifically investigates the impact of particle deformability and non-sphericity on the dynamics and rheology of granular systems. Flexible particles deform under stress, which in turn affects contact forces and stress transmission, leading to complex rheological behaviors such as transient jamming and stress-induced orientational ordering. Although the study of deformable, aspherical particle systems promises rich physical insights, challenges in experimental measurement and numerical modeling have hindered progress in this area.

This PhD position is part of a collaborative project uniting 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, led by Prof. Prüssmann. The PhD candidates from both groups are expected to collaborate closely on a daily basis.

Job Description

The PhD candidate will be responsible for:

• 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 these systems.
• Developing and utilizing machine-learning models to correlate particle deformation with contact forces in 3D systems.

Profile

• Candidates should possess a strong MSc degree in Mechanical Engineering, Physics, or related fields.
• Prior experience in numerical modeling or imaging techniques is advantageous.
• We seek highly motivated, dedicated, and innovative individuals who can work collaboratively and possess excellent communication skills in English, both written and oral.
• The candidate will have a unique opportunity to hone their research capabilities in a top-tier research environment.
• The position is available starting July 2026.

Workplace

ETH Zurich offers an exciting and dynamic working environment where cutting-edge techniques are applied, career development opportunities are abundant, and interdisciplinary collaboration is encouraged.

We Offer

• An engaging work atmosphere.
• Access to the latest techniques and methodologies.
• Opportunities for career advancement.
• A diverse and multidisciplinary team.

Our Commitment to Diversity and Sustainability

In alignment with our core values, ETH Zurich fosters an inclusive culture that promotes equality of opportunity and values diversity. We provide a working and learning environment where the rights and dignity of all staff and students are respected. For more details, please visit our Equal Opportunities and Diversity website. We are also dedicated to sustainability and are actively working towards a climate-neutral future.

Curious? So Are We.

We look forward to receiving your online application with the following documents:

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

Apply online using the form below. Only applications matching the job profile will be considered.

About ETH Zurich

ETH Zurich stands as one of the world’s leading universities focused on science and technology. We are acclaimed for our exceptional education, pioneering research, and the direct application of new knowledge in society. With over 30,000 individuals from more than 120 countries, our university fosters independent thought and inspires a culture of excellence. Located in the heart of Europe while building global connections, we collaborate to devise solutions to the world's contemporary challenges.