The goal of this work is to develop novel methods for nonlinear wave manipulation and topologically-protected waveguides, and to demonstrate these methods with acoustic metamaterials.The outcome will be relevant forthe development ofnew technologies for controlling acoustic or electromagnetic waves.

In contrast with acoustic metamaterials considered so far, which are based on the resonating behavior of their meta-atoms and which suffer dissipation losses, the envisioned research will be based on the mutual and external synchronization of tunable self-oscillating meta-atoms, which will enable gain of energy from the metamaterial itself.

This researchaimstoengineer metamaterials enablingnonlinear topological protectionof information transmission, derive the theoretical models governing them and demonstrate their intriguing properties experimentally. The practical realizationsof these topological metamaterialswill be based onmany3D-printed whistlesthat exhibit special scattering properties such as nonlinear cloaking or non-reciprocal amplified transmission of incident waves, and that will be interconnected in periodicnetworks.Extension of the findings to microwave systems is also planned.The research outcomes are expected to be published in major specialized and broad-audience journals.

You are expected to have a MScdegree in MechanicalEngineering, ElectricalEngineering or Physicswith very strong academic track record.Solidtheoretical modeling skillsand fascination for wave phenomena arerequired. Ideally, you would be available for a start in winter 2026.

We are looking for highly motivated, committed, creativeand eager to learnindividuals, able to work in a team and with excellent communication skills. Working in a top-level research environment with advanced laboratory infrastructure, the candidate will have a unique opportunity to develop her/his research abilities.

• Your job with impact: Become part of ETH Zurich, which not only supports your professional development, but also actively contributes to positive change in society
• You can expect numerous benefits, such as public transport season tickets and car sharing, a wide range of sports offered by the ASVZ, childcare and attractive pension benefits

We look forward to receiving your online application including a letter of motivation, a CV, contact details of two references (no reference letter needed), and transcripts of records. Please note that we exclusively accept complete applications submitted through our online application portal. Applications via email or postal services will not be considered.

Application deadline: November 24th2025.

Questions regarding the position should be directed to Anna Michailidis, email: [emailprotected] (no applications).

Further information about CAPS can be found on our website.