Postdoc: Operando on chip investigation of failure in optical phase change materials using ultrafast X ray Aarhus University in Denmark

Aarhus University, Department of Chemistry, Denmark, is offering a fully funded 2-year postdoctoral position focused on the operando investigation of failure mechanisms in optical phase change materials used in photonic devices. The project leverages advanced synchrotron X ray and X ray free electron laser (XFEL) techniques to probe structural dynamics and device degradation during rapid switching between amorphous and crystalline states. These materials are pivotal for emerging photonic computing technologies, and the research aims to provide real-time insights into their performance and reliability.

The postdoctoral researcher will design and execute operando experiments using laser pump and X ray probe total scattering, WAXS, SAXS, imaging, and femtosecond X ray diffraction. Target facilities include DESY, MAX IV, European XFEL, ESRF, APS, and LCLS, depending on awarded beamtime. The project is supported by the Independent Research Fund Denmark and offers strong access to international collaborations and large-scale experimental campaigns. The research group, Amorphous Materials Lab, provides a collaborative environment across the Department of Chemistry, CENSEMAT Centre for Energy Materials, and the iMAT Center for Integrated Materials Research.

Key responsibilities include co-leading beamtime proposals and campaigns, working with on-chip photonic device platforms, analyzing large scattering and diffraction datasets, and connecting structural signatures to device-level failure. The postdoc will contribute to experimental planning, proposal writing, and dissemination of results through publications and international conferences. Structured mentorship is provided to support independent research profile development, and the postdoc will have the freedom to pursue a related side project aligned with their interests.

Applicants must hold a PhD in chemistry, physics, materials science, or a related field, with experience in synchrotron X ray scattering and/or XFEL experiments, crystallographic and scattering data analysis, and handling large datasets. Programming skills (e.g., Python) and experience with operando or time-resolved experiments and X ray instrumentation are desirable. Fluency in written and spoken English is required. The position offers a competitive salary, support for international conference participation, and possible research stays. Aarhus University provides a supportive environment for career development, including relocation services and career counselling for international researchers.

The application deadline is June 17, 2026. Applications must be submitted via Aarhus University's recruitment system and include a CV, degree certificate, publication list, statement of future research plans, information about research activities, teaching portfolio, and verified teaching experience. For further information, contact Associate Prof. Shuai Wei at [email protected]. More details about the research group can be found at Amorphous Materials Lab.