Abstract: The aim of the internship is to generate attosecond pulses using a new high-power Ytterbium laser and to use them to investigate the ultrafast photoemission dynamics of gases and liquids, in particular, to image in real time the ejection of electronic wavepackets.
Updated: 24/10/2023 Display: Français | English | PDF | 
Abstract: The internship will make it possible to adapt the process of flash photolysis of H2O2 to its measurement in operando under ionizing radiation. For the proof of concept, it will be necessary to determine the best chemical system and the protocol to analyze the concentration of H2O2 formed during the radiolysis of water with heavy ions.
Updated: 11/10/2023 Display: Français | English | PDF | 
Abstract: The objective of the internship is to modify and optimize the properties of a femtosecond laser in order to extend the laboratory's experimental capabilities on the study of attosecond (1 attosecond = 10^-18 second) dynamics during laser-matter interaction, and in particular the fundamental mechanisms of the generation of high order harmonics in semiconductor crystals.
Updated: 29/11/2023 Display: Français | English | PDF | 
Abstract: The objective of this internship is to characterize the structure of the transmembrane protein mTSPO and its affinity for ligands of pharmacological interest. The study will be carried out in native conditions, by expressing mTSPO in yeast and solubilizing it in biomimetic environments. We will use biophysical tools (optical spectroscopy and SAXS) coupled with ab initio modeling.
Updated: 13/10/2023 Display: Français | English | PDF | 
Abstract: The aim of this project is to understand the mechanisms of energy dissipation during spontaneous spreading of a drop on a nanotextured substrate. As part of this internship, the student will study the wetting of nanotextured surfaces by conventional optical microscopy techniques (to probe macroscopic scales) and X-ray reflectivity (to probe nanoscopic scales).
Updated: 18/12/2023 Display: Français | English | PDF | 
Abstract:
Updated: 29/08/2023 Display: Français | English | PDF | 
Abstract: The aim of this internship is to study the insertion of metal-organic frameworks (MOFs) into PVDF polymer membranes to form nanocomposite materials. This type of MOF/polymer piezoelectric composite has already been studied in the literature, showing good piezoelectric responses. After synthesizing these materials, their intrinsic parameters will be characterized using a wide range of physico-chemical techniques (FTIR, UV-visible absorption spectroscopy, SEM), and their piezoelectric response will be measured to link the experimental results with the theoretical model already established.
Updated: 30/11/2023 Display: Français | English | PDF | 
Abstract: To detect pollutants in the air, we are developing compact, high-performance, lightweight measuring devices. These devices probe the chemical reactivity of gaseous pollutants using colored microbeads [see: Mugherli et al, Lab-on-a-Chip 2020; Guittet et al, Journal of Sol-gel Science and Technology 2023].
Updated: 11/10/2023 Display: Français | English | PDF | 
Abstract: The subject of this internship is part of a thesis project aimed at finding the best way of integrating carbon nanotubes into laminated composite materials, capable of bridging microcracks in the matrix of these composites, in order to limit fuel leaks from launch vehicle cryogenic tanks.
Updated: 21/10/2023 Display: Français | English | PDF | 
Abstract: The objective of the internship is to adjust the configurations and experimental conditions for the synthesis of carbon nanotubes (CNT) with respect to the constraints imposed by the environment of a transmission electron microscope (TEM) in order to demonstrate the feasibility of growth under these conditions. The envisaged approach is the implementation of our aerosol assisted chemical vapor deposition (AACCVD) process on the microscope.
Updated: 21/10/2023 Display: Français | English | PDF | 
Abstract: The aim of the internship is to explore the potential of radiolysis as a screening method for reagent/catalyst couples, with a view to developing an energy-efficient chemistry with a lower carbon footprint.
Updated: 21/10/2023 Display: Français | English | PDF | 
Abstract: The objective of this internship is to study nanodiamonds for photo(electro)catalysis, by building porous electrodes made of functionnalized diamond nanoparticles.
Updated: 21/10/2023 Display: Français | English | PDF | 
Abstract: To detect pollutants in the air, we are developing compact, high-performance, lightweight measuring devices. These devices probe the chemical reactivity of gaseous pollutants using colored microbeads See: [Mugherli et al., Lab-on-a-Chip 2020; Guittet et al., Journal of Sol-gel Science and Technology 2023].
Updated: 11/10/2023 Display: Français | English | PDF | 
Abstract: Pour détecter des polluants dans l’air, nous développons des dispositifs de mesure compacts, performants et légers. Ces dispositifs sondent la réactivité chimique des polluants gazeux grâce à des microbilles colorées [Voir : Mugherli et al., Lab-on-a-Chip 2020 ; Guittet et al., Journal of Sol-gel Science and Technology 2023].
Updated: 11/10/2023 Display: Français | English | PDF | 
Abstract:
Updated: 17/11/2023 Display: Français | English | PDF | 
Abstract: The aim of this internship is to develop coatings for bipolar plates in PEMFC fuel cells. The coating will have to protect the bipolar plate from corrosion and have suitable surface properties (wettability) to ensure gas and water transport.
Updated: 18/12/2023 Display: Français | English | PDF | 
Abstract: Porphyrins are aromatic tetrapyrrolic macrocycles that exhibit a wide range of optical, optoelectronic and electrochemical properties. The aim of this project is to synthesize new materials based on porphyrins to take advantage of these properties.
Updated: 20/08/2023 Display: Français | English | PDF | 
Abstract: The term graphene covers a whole family of materials. In this internship, we propose to build by organic synthesis methods graphene nanoparticles for the study of their optical properties and which can serve as a basic brick for the realization of graphene materials.
Updated: 21/10/2023 Display: Français | English | PDF | 
Abstract: This internship focuses on advancing nanoparticle synthesis through real-time monitoring using in situ small-angle X-ray scattering (SAXS). The goal is to establish a precise control system for nanoparticle properties by creating an automated synthesis setup with a feedback loop between SAXS measurements and synthesis parameters. The intern will work on synthesizing model nanoparticles (SiO2) with sub-nanometer accuracy, analyzing SAXS patterns, understanding the impact of operational parameters on nucleation and aggregation rates, and ultimately building a feedback control loop for producing nanoparticles with predetermined sizes.
Updated: 14/01/2024 Display: Français | English | PDF | 
Abstract: A hybrid system consisting of a nanotube encapsulating a light-harvesting system in its inner cavity and a metallic catalytic center on its outer surface will be studied in the context of water photolysis.
Updated: 07/09/2023 Display: Français | English | PDF | 
Abstract: Les micro/nanoplastiques sont une pollution émergente omniprésente sur le globe. La colonisation des microplastiques par des organismes vivants pourrait favoriser leur transport. Ce projet vise à l'étudier et s’appuie sur l’expertise de deux laboratoires de recherche au CEA Saclay et au LNE (Yvelines).
Updated: 19/09/2023 Display: Français | English | PDF | 
Abstract: The aim of this Master 2 project is to develop a microfluidic approach to surface modification of extracellular vesicles, to make them stable and non-immunogenic when administered in vivo.
Updated: 11/10/2023 Display: Français | English | PDF | 
Abstract: Parahydrogen hyperpolarisation is a leading method to increase the sensitivity of Nuclear Magnetic Resonance. This method requires a catalyst which, in solution, impairs spectral resolution. The present internship consists in the synthesis of catalysts grafted onto silica and the relationship between their structures and their hyperpolarised NMR properties.
Updated: 19/09/2023 Display: Français | English | PDF | 
Abstract: The aim of the internship will be to analyse the optical properties (fluorescence and frequency conversion, in particular 2nd harmonic generation - SHG) of nanometric dielectric particles in view of their future implementation for labelling and imaging in biology. The internship will include two parts: (1) the study of the SHG signal enhancement of these particles following their coupling to a plasmonic nano-antenna. (2) the possibility of controlling the emission properties of these particles by piezoelectric effect.
Updated: 11/10/2023 Display: Français | English | PDF | 
Abstract: To detect pollutants in the air, we are developing compact devices that probe the chemical reactivity of gaseous pollutants using coloured microbeads. In order to detect whether these microbeads have come into contact with a pollutant, their colorimetry needs to be analysed using on-board optical microcosopy or spectral analysis. We want to develop a version of this equipment that could be easily deployed.
Updated: 21/10/2023 Display: Français | English | PDF | 
Abstract: Thin epitaxial iron oxides films (M1-3xFe2+2x O4 (with M= Co, Ni and Cu)) will be prepared by atomic oxygen plasma assisted molecular beam epitaxy and characterized. The reaction and modification of the surface with respect to an aqueous electrolyte will be studied in detail as a function of the composition of the sample and under different experimental conditions.
Updated: 21/09/2023 Display: Français | English | PDF | 
Abstract: Thin epitaxial iron oxides films (M1-3xFe2+2x O4 (with M= Co, Ni and Cu)) will be prepared by atomic oxygen plasma assisted molecular beam epitaxy and characterized. The reaction and modification of the surface with respect to different chemical environment (electrolyte, gaz pressure) will be studied in situ for different cationic composition.
Updated: 21/09/2023 Display: Français | English | PDF | 
Abstract: This internship is proposed in the framework of a NanoSaclay project aiming to measure the hydrogen produced by solar water splitting using hematite and bismuth vanadate based photoanodes. STXM and XPEEM are used to characterize the chemistry and chemical coordination of the photoanode materials. A new operando setup adapted to the STXM instrument will be qualified.
Updated: 07/11/2023 Display: Français | English | PDF | 
Abstract: The objective of the internship is to grow epitaxial thin multiferroic ferrite/perovskite (CoFe2(OxN1-x)4/N:BaTiO3 oxynitride films by oxygen and nitrogen plasma assisted molecular beam epitaxy: a potentially new magnetoelectric material. We will proceed by nitrogen doping of oxide films for which the growth conditions are already mastered in the CEA/SPEC laboratory. The crystalline structure as well as the magnetic and ferroelectric properties will be studied.
Updated: 07/11/2023 Display: Français | English | PDF | 
Abstract: Development of potential drop method on oxide glass samples.
Updated: 02/10/2023 Display: Français | English | PDF | 
Abstract: Ce stage, qui s'adresse à des étudiants de M1 ou M2, a pour objectif de mettre en œuvre un nouveau dispositif expérimental développé au SPHYNX afin d'étudier le comportement d'un liquide sous l'effet d'une marche ultra rapide de température.
Updated: 07/11/2023 Display: Français | English | PDF | 
Abstract: In proposed experimental internship, we will investigate the fundamental laws of physics behind the optical, thermal and thermoelectric properties of nanofluids. In parallel, the optimization and validation of the proof-of-concept hybrid solar-collector devices will be conducted in order to demonstrate the co-generation feasibility of heat and electricity.
Updated: 08/11/2023 Display: Français | English | PDF |