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Reference : UPR2940-FLOPOI-043
Workplace : GRENOBLE
Date of publication : Monday, November 09, 2020
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 January 2021
Proportion of work : Full time
Remuneration : Between 2648 € and 3050 € monthly gross salary according to experience.
Desired level of education : PhD
Experience required : Indifferent
Two-dimensional (2D) materials are strongly studied nowadays for two main reasons: i) the variety of materials that can be synthesized and transferred to interesting “host” substrates ii) the new specific features that can be induced by such materials and their related functional properties.
The research program CHACAL (for Nano-meCHAniCAL engineering of 2D materials) started in 2019 and is aimed to better understand the behavior and mechanical stability of 2D materials under local mechanical stresses. The experimental approach consists in taking advantage of the process of emergence of dislocations at the 2D material / substrate interface during the plastic deformation of the substrate, and thus to identify, or even control, the genesis of particular morphological structures (wrinkle, buckling, …) on the graphene sheet.
We will focus our attention to graphene known to form a stable, continuous and gas-impermeable membrane, including in its monolayer form. It also presents several outstanding physical and chemical properties (strong electronic conductivity, high mechanical resistance, …).
The main objective will be to develop high-quality graphene monolayers by chemical vapor deposition (CVD) on single crystal copper substrates and possibly on other alternative substrates. The graphene will then be ex-situ characterized by different characterization techniques (SEM, Raman spectroscopy, AFM, ...). The produced samples will subsequently be stressed/strained to follow in situ the evolution of sample surfaces by scanning tunneling microscopy under ultra-high vacuum (UHV-STM).
- Growth of graphene by chemical vapor deposition (CVD).
- Experimental study and development of graphene growth CVD processes on copper single crystals as well as other alternative substrates.
- Transfer of graphene sheets on host substrates
- Ex-situ morphological (SEM, AFM, …), structural (Raman spectroscopy, …) and electrical characterizations
- In-situ characterizations under mechanical stress by ultra-high vacuum scanning tunneling microscopy (UHV-STM) in Poitiers
- PhD in Physics, Materials Science or Inorganic Chemistry (obtained during the last three years).
- Work in chemistry room and clean room environment are mandatory as well as a pronounced interest for experimental work.
- Ability to write and speak fluently in English (meetings with collaborators / conferences, reports and exchanges in the frame of the ANR project, writing articles in peer-reviewed journals).
- Good teamwork ability (interactions with other members of the project consortium as well as with research and technical staff).
The Néel Institute is a CNRS unit (UPR 2940) under agreement with the University Grenoble Alpes working in the field of fundamental condensed matter physics. The Néel Institute has a CVD equipment dedicated to the growth of graphene and environments (chemistry rooms, clean rooms, ...) dedicated to the transfer of this material to "host" substrates as well as to its characterization.
The P' Institute is a CNRS unit (UPR 3346) under agreement with the University of Poitiers and the engineering school ENSMA, working in the field of physical and engineering sciences. The P' Institute has recently developed an original set-up allowing to follow in situ, by scanning tunneling microscopy in an ultra-high vacuum environment, the evolution of surfaces at the atomic scale under increasing stress/strain (nanoplast.pprime.fr).
Universities of Grenoble-Alpes and Poitiers are the main partners of the CHACAL program. The research program will mainly take place in the host laboratory in Grenoble, but regular trips to Poitiers will be expected to perform in-situ UHV-STM studies under mechanical stress.
Please provide a list of publications as well as references with telephone number and e-mail.
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