PhD Student on AI ML/DL models development for atomic scale EM characterization

The mission of the Catalan Institute of Nanoscience and Nanotechnology (ICN2) is to achieve the highest level of scientific and technological excellence in Nanoscience and Nanotechnology. Its research lines focus on the newly-discovered physical and chemical properties that arise from the behavior of matter at the nanoscale. ICN2 has been awarded with the Severo Ochoa Center of Excellence distinction for two consecutive periods (2014-2018 and 2018-2022). ICN2 comprises 19 Research Groups, 7 Technical Development and Support Units and Facilities, and 2 Research Platforms, covering different areas of nanoscience and nanotechnology.

Job Title: PhD Student on AI ML/DL models development for atomic scale EM characterization

Research area or group: Advanced Electron Nanoscopy (GAeN) Group

Description of Group/Project:

The Advanced Electron Nanoscopy group applies advanced electron microscopy and related spectroscopies (EELS and EDX) to the understanding of the nanoworld down to the atomic scale. The group also works to develop new methodologies for performing a direct correlation between the structural and chemical properties of materials at the atomic scale and their physical properties at sub-nanometre scale (photonics/electronics/quantum), together with a detailed atomic-level study of the growth mechanisms in nanostructures using 3D atomic models.  We offer exciting working conditions in a vibrant, interdisciplinary and international research environment. Within this PhD project, the candidate will characterise novel materials and devices based on hybrid semiconductor / superconductor systems for quantum applications (e.g.: quantum computing). Detailed atomic resolution structural and chemical characterisation of the grown materials will be performed by high-angle annular dark-field scanning transmission electron microscopy (HAADF STEM, 4D STEM, iDPC and ptychography) and related spectroscopies, such as electron energy-loss spectroscopy (EELS) and energy dispersive X-ray spectroscopy (EDX) within the Electron Microscopy Center at the ALBA Synchrotron and the EM fascilities at the ICN2.

Main Tasks and responsibilities:

The successfull candidate will be trained to perform (S)TEM experiments and evaluate the crystal quality of the nanomaterials under study by developing AI ML/DL models to automate both, the data acquisition in the electron microscope and the data analysis. She/he will also get the base knowledge to (i) create 3D atomic models for the main growth and physical mechanisms characteristic of the studied nanostructures, and (ii) to perform the corresponding image simulation in order to unveil all the image characteristic features. Special attention will be devoted to defects (misfit dislocations, stacking faults and twins), iii) Create the AI ML/DL models to acquire chemical and physical information with atomic resolution on the HAADF or DPC STEM images and the STEM-EELS maps. Furthermore, she/he will evaluate nanoscale strain fields, dilatation and rotation maps using the geometrical phase analysis (GPA) algorithm. These information will be essential for the synthesis optimization of novel materials and devices based on hybrid semiconductor / superconductor systems for quantum applications (e.g.: quantum computing). The topological quantum systems under study will be based on hybrid NWs or 2D electron and hole gases based on group iV and III-V technologies. The candidate will have the opportunity to work side-by-side in collaboration with other collaborators in Switzerland (EPFL), Austria (IST), the Netherlands (TU Delft) and US (Perdue Univ.). The candidate will carry out independent research under supervision, write scientific papers for publication in peer-reviewed journals, and disseminate the work at international conferences. The position will include the possibility to carry out paid secondments (research internships of typically 3-4 months) on other partner labs.

Requirements:

Master's degree in physics, quantum technologies, nanoscience and nanotechnology, materials science, quantum engineering or related areas with an academic level equivalent

• Knowledge and Professional Experience:

The candidate should have advanced knowledge on programming and creation of AI ML/DL models, basic knowledge in transmission electron microscopy (TEM) and materials characterisation, while knwoledge on quantum technologies and materials is also welcome.

High interest on electron microscopy and materials science.

Excellent written and spoken communication skills in English are required.

The successful candidate will be able to develop experimental and some theoretical methods, advance the PhD project and work independently and as part of a team.

Integrity, perseverance and resilience, innovation, teamwork and communication skills.

Summary of conditions:

• Full time work (37,5h/week)
• Contract Length:  Temporary (2 years)
• Location: Bellaterra (Barcelona)
• Salary will depend on qualifications and demonstrated experience.
• Support to the relocation issues.
• Life Insurance.

Estimated Incorporation date: September 2022

How to apply:

All applications must be made via the ICN2 website and include the following:

Applications will be continuously reviewed. Shortlisted candidates will be invited for interview.

Deadline for applications: July 22nd 2022

Equal opportunities:

ICN2 is an equal opportunity employer committed to diversity and inclusion of people with disabilities.

ICN2 is following the procedure for contract of people with disabilities according with article 59 of the Royal Decree 1/2015, of 30 of October.