Open Positions

PhD Objective and methodology

In this PhD thesis, we propose to achieve high zT via advanced grain-boundary engineering. GBs offer a compelling and novel material design space. In fact, recent literature suggests that: (i) GBs behave as ‘phases’ and can thus exist in multiple forms, with different local chemistry and structural arrangements; (ii) the type of GBs can have major impact on its thermal and electrical transport. TE research typically relies on macroscale measurements of κ and σ, incapable of distinguishing the role of individual GBs. As such, what GB types are beneficial for TEs remains unclear. We recently demonstrated that measuring κ for individual GBs is possible (Fig 1). Measuring the σ of individual GBs was also recently shown in metals. However, these have never been put together: what GBs possess higher σ/κ remains unknown, though pivotal for rationally pursuing GB engineering in TEs.

The PhD researcher will develop a strong experimental background and will focus on (i) TE material synthesis and characterization, including with thermal conductivity imaging (FDTR thermoreflectance), local electrical measurements, and electron microscopy; (ii) data analysis and theoretical/analytical interpretation of results; (iii) TE device assembly and optimization. Outcomes will include publications in international scientific journals as well as presentations at national and international conferences. The candidate will develop an attractive profile for a career in industry R&D, as well as academia.

Working environment:

This project is one of the key milestones of HEAT FIS-3 Starting Grant, and will be carried out at the Energy and Materials Laboratory. Electron microscopy investigations will be carried out in collaboration with the Max Planck Institute for Sustainable Materials, in Germany, where the candidate will have the opportunity of spending a research stay.

Candidate profile:

Student with a Master degree in Materials Science, Physics, Engineering, or related (to be acquired by 31st October 2026).

Beginning of PhD contract:

1st November 2026.

PhD Objective and methodology

The goal of this PhD project is the development of laser-patterned heat guides to deliver heating and cooling loads at reconfigurable, submicron locations of a target battery or microelectronic device. The PhD researcher will work on laser-manufacturing methods to write and reconfigure heat-guide patterns, test their thermal conduction performance, and demonstrate the possibility of delivering heat at submicron locations via nanoscale patterning techniques.

The PhD researcher will develop a strong experimental background in advanced manufacturing of semiconductor materials, as well as characterization using scanning electron microscopy (SEM), temperature imaging, and thermal conductivity imaging via thermoreflectance (FDTR). Work will also focus on developing a theoretical (analytical) interpretation of thermal transport results, with potential modelling integration. Outcomes will include publications in international scientific journals as well as presentations at national and international conferences.

Working environment:

This project is one of the key milestones of HEAT FIS-3 Starting Grant, and will be carried out at the Energy and Materials Laboratory. The project is in collaboration with the Bruno Kessler Foundation, and the Materials Science Dept. at Lehigh University, USA, where the PhD researcher will have the opportunity to spend a research stay.

Candidate profile:

Student with a Master degree in Materials Science, Physics, Engineering, or related (to be acquired by 31st October 2026).

Beginning of PhD contract:

1st November 2026.