PhD Position: Pushing MEMS Resonators to Their Physical Limits for Next-Generation Timing Devices (TrueTime Project) TU Wien in Austria

The Institute of Sensor and Actuator Systems (ISAS) at TU Wien, led by Prof. Ulrich Schmid, is offering a PhD position in the innovative TrueTime project, focusing on MEMS resonators for next-generation timing devices. This project, in collaboration with industrial partners, aims to push the boundaries of timing precision in modern electronic systems, such as smartphones, high-speed communication, and sensing technologies. As data rates increase (5G/6G, terabit optical links), the demand for ultra-precise timing devices grows, with allowable jitter reaching the tens of femtoseconds range.

The TrueTime project seeks to establish new scientific and technological foundations for timing devices using silicon carbide (SiC) and polycrystalline diamond (PCD), surpassing the intrinsic limits of silicon. The goal is to achieve Q-f (Q-factor - resonance frequency) products beyond what is currently possible, positioning MEMS resonators as key building blocks for future timing applications.

As a PhD candidate, you will design and fabricate MEMS resonators in Si, SiC, and PCD, perform cleanroom fabrication (lithography, etching, metallization), and conduct electrical and optical characterization. You will work closely with a postdoctoral researcher for multi-physics modelling and validation of dissipation mechanisms, collaborate with industrial partners, and present your findings at scientific conferences. The role offers the opportunity to develop strong experimental expertise at the intersection of MEMS, advanced materials, and high-frequency electronics.

The position is based in Vienna's city centre, providing excellent accessibility and infrastructure. The contract is for 3 years, starting July 15th, 2026, with an initial 1-year term and extension upon successful evaluation. Remuneration is EUR 2,926.48 gross/month (14 times a year) for 31 hours/week, totaling 40,970.69 €/year gross. Additional benefits and flexible working hours are offered, along with continuing education opportunities.

Applicants must have an MSc or equivalent in electrical or mechanical engineering, physics, or a related field. Essential skills include hands-on cleanroom work, device fabrication, high-frequency electrical characterization, and strong English communication. Prior experience in micro- and nanofabrication or thin film deposition/analysis is advantageous but not mandatory. The ideal candidate is scientifically curious, proactive, and able to work independently and collaboratively.

To apply, submit a single PDF with a motivation letter, CV, grade transcripts, and BSc/MSc diploma to [email protected] by May 15th, 2026. The selection process includes two interview stages and research exercises. TU Wien encourages applications from women and individuals with special needs, offering preferential consideration to female candidates when equally qualified.

For more information about the group and institute, visit ISAS at TU Wien. The university is committed to diversity, open communication, and a collaborative research environment.