02/05/2022
The Human Resources Strategy for Researchers

PhD thesis in surface physics and advanced microscopy (M/F)

This job offer has expired


  • ORGANISATION/COMPANY
    CNRS
  • RESEARCH FIELD
    Physics
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    06/06/2022 23:59 - Europe/Brussels
  • LOCATION
    France › ST ETIENNE DU ROUVRAY CEDE
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    35
  • OFFER STARTING DATE
    01/10/2022

OFFER DESCRIPTION

The GPM (Materials Physics Group, UMR CNRS 6634) is structured into 5 departments: Materials-Aging-Mechanics, Scientific Instrumentation, Nanosciences, Disordered Systems-Polymers and Nano-Health-Physics. It brings together 160 staff, including 60 Teachers-Researchers/Researchers, 30 ITAs and 70 PhD students/Postdocs/Trainees. The laboratory is located on the Campus Sciences et Ingénierie Rouen Normandie (in Saint Etienne du Rouvray), within the University of Rouen Normandie and INSA Rouen Normandie (7000m2).
The recruited doctoral student will be attached to the scientific instrumentation department, which includes 5 teacher-researchers, 5 engineers,, 3 post-doctoral students and 5 doctoral students.

Exploration of experimental methods for quantification and imaging of hydrogen reactions by atom probe tomography

Hydrogen is gathering increasing attention due to its importance as an energy vector. Beyond this aspect, it plays an important role in determining the structural properties of metals, and interacts with functional defects in semiconductors.
The potential of advanced analysis and imaging techniques for an in-depth study of hydrogen - an often elusive element for many microanalysis techniques - is linked to their ability to analyze chemical species present on the surface or in the volume of a sample, allowing their localization and chemical identification. The Tomographic Atom Probe allows the detection of single atoms and their localization in 3D within a nanometric volume. However, many problems exist concerning hydrogen because it is generally found in its gaseous form H2 within the analysis chambers and represents a spurious signal that degrades the chemical sensitivity of the analysis [2,3]. Moreover, hydrogen also participates in surface chemical reactions.
This PhD topic proposes to develop methodological approaches that can target the quantification of hydrogen, its localization, but also the temporal spatial imaging of phenomena involving chemical reactions that would take place at the surface of the analyzed samples.
The candidate will develop techniques for sample preparation and analysis by Atom Probe Tomography, as well as methods for the exploitation of data from these experiments, while studying the theory behind field evaporation and the basics of high field chemistry. He/she should have a good knowledge of solid state physics and/or surface chemistry.
This thesis is financed within the framework of a Labex EMC3 project ("Quantification and advanced physico-chemical imaging: application to hydrogen in materials") - (QuantyPhy)

[1] Seidman, D., & Stiller, K. (2009). An Atom-Probe Tomography Primer. MRS Bulletin, 34(10), 717-724. doi:10.1557/mrs2009.194 https://web.archive.org/web/20190503002941id_/https://www.cambridge.org/...
[2] Sundell, G., Thuvander, M., & Andrén, H. O. (2013). Hydrogen analysis in APT: methods to control adsorption and dissociation of H2. Ultramicroscopy, 132, 285-289.
[3] L. Rigutti et al., “Surface Microscopy of Atomic and Molecular Hydrogen from Field-Evaporating Semiconductors,” J. Phys. Chem. C, vol. 125, no. 31, pp. 17078–17087, Aug. 2021, doi: 10.1021/acs.jpcc.1c04778

More Information

Additional comments

subject to confirmation of funding by the Labex EMC3 within the framework of the QuantiPHy project.

Web site for additional job details

Required Research Experiences

  • RESEARCH FIELD
    Physics
  • YEARS OF RESEARCH EXPERIENCE
    None

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Physics: Master Degree or equivalent
  • REQUIRED LANGUAGES
    FRENCH: Basic
Work location(s)
1 position(s) available at
Groupe de physique des matériaux
France
ST ETIENNE DU ROUVRAY CEDE

EURAXESS offer ID: 779973
Posting organisation offer ID: 28616

Disclaimer:

The responsibility for the jobs published on this website, including the job description, lies entirely with the publishing institutions. The application is handled uniquely by the employer, who is also fully responsible for the recruitment and selection processes.

 

Please contact support@euraxess.org if you wish to download all jobs in XML.