Reference : UMR5129-MARCLO-054
Workplace : GRENOBLE
Date of publication : Wednesday, April 27, 2022
Scientific Responsible name : ZELSMANN Marc
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 October 2022
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly
Description of the thesis topic
Nanostructures formed by the self-assembly of block copolymers (BCPs) are foreseen to enable next-generation nano-manufacturing with applications in biology, optics or microelectronics. These opportunities for BCP nanotechnologies are tied to the formation of well-ordered periodic patterns in thin film configuration. Indeed, the thermodynamic driving force leading to the segregation of BCP chains in the form of chemically dissimilar nanodomains can yield to a template further used as a nanolithographic mask. With the advent of BCP systems with resolutions below 10 nm, interface manipulations through substrate's treatment and top-coat layers have become a critical aspect in obtaining uniform nanostructured films. Nonetheless, the interplay between self-assembly of BCP at the nanoscale and perpendicularly oriented polymer layer wetting clearly lacks fundamental understanding, even though it is of crucial importance for controlling (thermo)dynamic stability of such films or to achieve complex (3D) nano-architectures based on local modifications of interfaces and/or wetting. Indeed, dewetting of BCP films occurs frequently and could be harnessed in order to further extend the scope of nanopatterns obtained from BCP self-assembly.
Accordingly, this PhD will be devoted to:
(1) the in-depth understanding of dewetting phenomena and self-assembly for BCP thin films with a focus on their intricate relationships
(2) related materials and processes development to offer new nano-fabrication schemes. In particular, it is expected to achieve the long-range ordering of perpendicular lamellas trough lithography of the top-coat.
- Knowledge in cleanroom nano/microfabrication are welcome
- Polymer chemistry and or surface physico-chemistry are welcome
- Experimental skills and good knowledge of English are expected
This project is developed in the framework of the Bonsai project funded by the ANR which brings together 4 recognized laboratories in the field (LTM Grenoble, LCPO Bordeaux, PIMM Paris, LPS Saclay, 2022-2025).
The work will be divided between Bordeaux (polymer synthesis and characterization) and Grenoble (nano-manufacturing processes in the CEA-LETI-Minatec cleanroom facilities): 20% / 80%
The “Laboratoire des Technologies de la Microélectronique” (LTM) is a public research laboratory affiliated to the National Centre for Scientific Research (CNRS, “Institut des sciences de l'ingénierie et des systems”) and to Grenoble Alpes University. It was founded in 1999 and is hosted within the CEA-LETI-MINATEC campus (10,000 m2 of cleanrooms, 2400 researcher, 1200 students and 600 industrials working on micro and nanotechnologies). Its staff is composed of 30 permanent scientists / lecturers / professors, 18 technicians and engineers, 31 PhDs and 16 post-doctoral members. The main goal of LTM is to contribute to the material and technology developments needed for nanoelectronics and nanotechnology applications.
Constraints and risks
We talk about it on Twitter!