Dye encapsulation into host single-walled carbon nanotubes is an elegant way to create hybrid nano-systems with tunable opto-electronic properties. To this aim, different kinds of molecules (either electron donor or acceptor, absorbing either in the blue or the red visible range) are encapsulated into metallic or semiconducting nanotubes displaying...
The elastic effects on particle growth were studied from a developed 3D original model that couples explicitly phase transformations and mechanical fields. This model is shown to be able to describe the time-evolution of both chemical and mechanical fields and their interactions in diffusive mass transport. In order to isolate and to analyse some g...
International audience
International audience
International audience
International audience
Magnetization dynamics is of great interest in the aim of using spins in nanoscale information technology, which ultimately should reach the atomic size. In the present work, we explore magnetization and spin dynamics in atomic ferromagnetic contacts both experimentally and theoretically. We demonstrate that domain walls induce a giant rectificatio...
In this article, we present a microfluidic method for the production of monodispersed hydrogel microparticles of Na-/Ca-alginate with controllable sizes (micrometer range) and mechanical properties without using surfactant. Our ultimate aim is to produce microparticles that mimic red blood cells (RBCs). Ex situ gelation is carried out to realize th...
The long sought-after goal of locally and spectroscopically probing the excitons of two-dimensional (2D) semiconductors is attained using a scanning tunneling microscope (STM). Excitonic luminescence from monolayer molybdenum diselenide (MoSe 2) on a transparent conducting substrate is electrically excited in the tunnel junction of an STM under amb...
This work presents an original synthesis of TiO 2 /graphene nanocomposites using laser pyrolysis for the demonstration of efficient and improved perovskite solar cells. This is a one-step and continuous process known for nanoparticle production, and it enables here the elaboration of TiO 2 nanoparticles with controlled properties (stoichiom-etry, m...
