We demonstrate a protocol using individual nitrogen-vacancy centres in diamond to observe the time evolution of proton spins from organic molecules located a few nanometres from the diamond surface. The protocol records temporal correlations among the interacting protons, and thus is sensitive to the local dynamics via its impact on the nuclear spin relaxation and interaction with the nitrogen ...

Abstract The behavior of nitrogen during magmatic degassing and the potential kinetic fractionation between N other volatile species (H, C, O, noble gases) are poorly known due to paucity diffusion data in silicate melts. To better constrain mobility processes, we investigated melts under reducing conditions. We developed uniaxial experiments at 1 atm, 1425 °C, nominally anhydrous conditions (f...

Polyethylene-based films can be used as sealant materials at room temperature in packaging applications. They also melted and sealed with glass, acting material solar cells. The polyethylene-based polymers investigated this paper are a linear low-density polyethylene modified maleic anhydride (or PE-MAH), an ethylene acrylic acid copolymer EMAA). Measurements of nitrogen gas diffusion coefficie...

Radiation enhanced diffusion at the surface of metals has been observed and studied for low-energy nitrogen ions at the surface of copper. The displacement of the target atoms during irradiation creates vacancies and other defects near the surface, thus enhancing the diffusion of implanted materials toward the surface and also into the solid. The mechanism has been studied here by a specia...

In this work, adsorption kinetics were investigated in order to remove the acid blue 62 off the aqueous solutions using mesoporous silicate SBA-15 loaded with tannic acid (tannin-SBA-15). Nitrogen adsorption and desorption test (BET), X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FT-IR) analysis characterize synthesized composite. The impacts of some parameters such as P...

Deuterium diffusion is investigated in nitrogen-doped homoepitaxial ZnO layers. The samples were grown under slightly Zn-rich growth conditions by plasma-assisted molecular beam epitaxy on m-plane substrates and have a nitrogen content [N] varied up to 5x1018 at.cm-3 as measured secondary ion mass spectrometry (SIMS). All exposed radio-frequency deuterium plasma during 1h at room temperature. o...

A generalized phase transformation kinetics model is used to understand the martensite to austenite transformation in a cold-rolled and annealed metastable AISI 301LN ultrafine-grained austenitic stainless steel. The model shows that the presence of interstitial nitrogen and heavy cold-rolling is important to promote fast transformation kinetics, through rapid nitrogen-diffusion and austenite n...