Nadia Pellerin

• PhD
• Maître de Conférences at CNRS Orleans Campus

In this study, we examine texturing features on soda-lime (SDL) silicate glass bottles achieved using a Carbon Dioxide (CO2) laser with continuous wave power (25 W at 10.6 µm). SDL glass samples were subjected to irradiation in both static and dynamic modes. In the static mode, exposure time (τON) varied from 10 µs to 2 ms, while the dynamic mode i...

The Z-scan technique, with the use of femtosecond laser pulses at 813 nm and of 1 kHz repetition rate, was applied for measurement of the nonlinear optical properties of silicate glass with embedded gold nanoparticles, produced by the standard melt-quenching method and then annealed at 550 °C. At irradiance levels of 10¹² W m⁻² it exhibited two-pho...

An apparent kinetic model is developed for a novel chemical vapor deposition (CVD) process of silicon oxynitride (SiOxNy) films from tris(dimethylsilyl)amine (TDMSA) and O2, operating at moderate temperature (600-650°C) and at atmospheric pressure. The definition of reaction pathways and the extraction of kinetic information is based on recently re...

Nanoindentation is a well-known technique to assess the mechanical properties of bulk materials and films. Despite that, nanoindentation of thin films is not straightforward, given that the measured properties are composite information from a film/substrate system and depend on the indentation depth. By using dynamic indentation experiments and ana...

Plasma activated water is a chemically active aqueous medium characterized by the presence of reactive oxygen and nitrogen species created by plasma exposure. This particular chemical composition is the starting point of extensive research studies in several domains such as bio-disinfectant in biomedical applications or as fertilizer in agricultura...

The chemical or mechanical performance of amorphous SiO2 films depend on intrinsic physicochemical properties, which are intimately linked to atomic and molecular arrangements in the Si-O-Si network. In this context, the present work focuses on a comprehensive description of SiO2 films deposited from a well-established chemical vapor deposition pro...

Silica and silica-based materials with tunable functionalities are frequently encountered in low-k material applications, porous membranes, and microelectonic devices. In the present study, an innovative O2/O3 assisted CVD process for the deposition of such films at moderate temperature is presented, based on a dual precursor chemistry from hexamet...

Crystal glass alteration in an aqueous medium has been extensively studied following the implementation of strict regulations regarding lead leaching. However, despite the widespread use of lead glasses and crystal glass by artists and artisans ever since antiquity, few works focus on crystal glass corrosion in atmospheric conditions. In this preli...

The structural study of lanthanum sodium aluminoborosilicate (55SiO2-(25-x) Al2O3-xB2O3–15Na2O–5La2O3) glasses were investigated. The structural characterization by solid state Nuclear Magnetic Resonance have outlined the role of aluminum/boron substitution. This study has a particular interest for applications like the nuclear waste glass storage....

An experimental study on MIG-MAG welding in reverse polarity (anode wire) has been implemented to analyse the influence of the active gas type and composition on the welding process. The analysis of the arc column using optical emission spectroscopy and high speed imaging completed by µ-structural study of the electrode wire by EDS/XRD and EPMA met...

[Post-Publication CAE 2019]

Nuclear glass: Searching for solutions to dissolution How a ‘peraluminous’ glass—of interest in nuclear waste storage—changes in solution has been studied. The long term behaviour of borosilicate nuclear glasses, used to store high-level nuclear waste, has important safety ramifications and it is known that dissolution and precipitation processes i...

Study of glasses with a high content of rare earth elements has a particular interest due to their use in nuclear waste storage. New glass matrices are required to immobilize even higher concentrations of high-level waste in comparison to borosilicate glasses already used. We study the effect of aluminum/boron substitution on the structure of peral...

The structural and microstructural properties of both homogeneous and phase separated lanthanum aluminosilicate (La2O3-Al2O3-SiO2 i.e. LaAS system) glasses were investigated. The microstructural observations and the structural characterization by X-ray Diffraction and by Nuclear Magnetic Resonance have highlighted the role of aluminum to favor a ho...

Metal Active Gas (MAG) welding in presence of Argon and CO2 mixture as shielding gas is a largely developed process allowing the transfer of the liquid metal from the consumable wire anode to the workpiece according to various modes (short-arc, globular, spray-arc). The CO2 presence in the shielding gas leads to the formation of an oxide layer, or...

[Post publication HTPP 2018 - Présentation orale]

Treatments with atmospheric pressure non-thermal plasma are easy to implement and inexpensive. Among them gliding arc (GlidArc) remains rarely used in surface treatment of polymers. However, it offers economic and flexible way to treat quickly large areas. In addition the choice of carrier gas makes it possible to bring the active species and other...

Session A :Arcs - Ref A23 [Communication orale par Q.Castillon]

The Zerodur® glass-ceramic chemical durability has been studied by leaching. The nuclear magnetic resonance spectroscopy analysis has allowed highlighting the network changes. A macroscopic evaluation of the surface alteration has been performed by contact angle measurements, this analysis being sensible to the roughness and the hydrophilic charact...

[Communication orale par Q.Castillon]

Soda lime silicate oxide glasses are studied to perform coloration thanks to gold nanoparticles’ crystallization. This precipitation is conducted by chemical reduction of gold ions with stannous or antimony oxides as reducing agents. A control of the rendered coloration between blank to red shades has been obtained using Sb2O3 agent and appropriate...

Unlike the long-range order of ideal crystalline structures, local order is an intrinsic characteristic of real materials and often serves as the key to the tuning of their properties and their final applications. Although researchers can easily assess local ordering using two-dimensional imaging techniques with resolution that approaches the atomi...

Hall Effect Thrusters (HETs) are promising electric propulsion devices for the station-keeping of geostationary satellites (more than 120 in orbit to date). Moreover, they can offer a cost-effective solution for interplanetary journey, as proved by the recent ESA SMART-1 mission to the Moon. The main limiting factor of the HETs lifetime is the eros...

Online UV/visible extinction measurement have been achieved during nanosecond Nd:YAG laser irradiation at 532 nm of a silver-exchanged silicate glass after each shot. We have explained the evolution of the integrated spectral evolution with the help of a few observed spots after the laser/glass interaction and completed them by optical and surface...

The gas metal arc welding (GMAW) process is strongly influenced by the composition of the shielding gas. In particular, addition of CO2 increases the threshold current for the transition from unstable globular to more stable spray transfer mode. We report on the diagnostics—using optical emission spectroscopy—of a GMAW plasma in pure argon and in m...

Communication orale (Q.Castillon)

Silver-exchanged silicate glass has been irradiated by 532-nm pulsed Nd:YAG laser in order to locally form metallic nanoparticles. The particular interest of this process is to locally control the silver nanoparticles (NPs) growth. Silver ions are exchanged with sodium ions near the glass surface after dumping of a silicate glass few minutes in sil...

Hall Effect Thrusters (HETs) are promising electric propulsion devices for the station-keeping of geostationary satellites and for interplanetary missions. The main limiting factor of the HET lifetime is the erosion of the annular channel ceramic walls. Erosion monitoring has been performed in the laboratory using optical emission spectroscopy (OES...

[Conférence invitée par F.Valensi]

[Communication orale (S.Noui)]

Conférence invitée (F.Valensi)

[Session VIII-2 : Hall Thruster Experiment IV, n°230] Communication orale (L.Balika)]

Various transfer modes can occur in gas metal arc welding (GMAW) process, according to the choice of the welding current and shielding gas composition. The spray transfer mode, that users prefer, is obtained for a high enough current under pure argon; for a lower current or when CO 2 is added in the gas in sufficient concentration, the transfer bec...

[Session "Plasma Sources Designs and Characterizations" N°11/20, Paper 66] Communication orale (N.Pellerin)

In this work, we investigated the effect of nanosecond laser irradiation at 532 nm on precipitation of Ag nanoparticles (NPs) in soda lime glasses doped with silver in the Ag + –Na + ion-exchange process. Formation and subsequent modification of Ag NPs during laser irradiation were studied by on-line extinction measurements making use of the locali...

[Symposium R : Laser processing and diagnostics for micro and nano applications] Poster

During gas metal arc welding (GMAW), the plasma obtained has a rich composition and some hypothesis are often made for modelling, in particular the local thermodynamical equilibrium (LTE) state of the plasma. It is then important to study its validity domain, as it is also needed for plasma parameters determination. The plasma was investigated usin...

Melt-texturing of YBaCuO is generally processed on substrates. Due to its high chemical activity, the non-stoichiometric liquid, mainly due to the barium element, generally reacts with the substrate which is therefore subjected to play a role in the crystallization of YBaCuO and in the development of the texture. The particular case of Y2O3, which...

The plasma column in a metal inert gas welding process is investigated by optical emission spectroscopy and high-speed imaging. The concentration and repartition of iron vapours are measured and correlated with the plasma and electrode geometric configuration. Plasma temperatures and electron densities are also measured for each studied position in...

["TOM 3 : Nanophotonics and Metamaterials"] Poster

[Colloque 13 : " Nanochimie, Nanomatériaux, Nanostructures " ] Poster

[Colloque 8 : "Thermodynamique et matériaux pour les hautes températures "] Communication orale (A.Doret)

[Colloque 14 : " Le soudage au service des énergies du futur " + 8e Journées Nationales du Soudage] Communication orale (N.Pellerin)

Communication orale (M.Dudeck)

[Session Terahertz radiation interaction with a matter, Poster PS141; p121] Poster

[Thème 6 : Plasmas in fusion, physics and technology ] Poster

[Thème 4 : Plasma and laser processing] Communication orale (L.Balika)

[Thème 6 : Plasmas in fusion, physics and technology] Poster

[Symposium R : Laser processing and diagnostics for micro and nano applications] Communication orale (O.Véron)

Communication orale (C.Focsa)

Communication orale (C.Focsa)

Over the years, solid-state nuclear magnetic resonance (NMR) spectroscopy has become an important tool for materials science, with its local point of view that is highly complementary to the structural information provided by diffraction techniques, electron microscopy, and molecular modeling for example. As compared to other interactions that dete...

Communication orale (M.Dudeck)

Communication orale (M.Dudeck)

The shielding gas used in the welding process has a strong influence on the metal transfer characteristics. When the gas is chemically active the physicochemical properties of the electrodes can be strongly altered which can increase or decrease arc stability. In order to get a better control over the process it is essential to understand how the e...

Air Liquide - Brevet International n°PCT/FR2009/050863 Pub. No.: WO/2009/150340 / Publication Date: 17.12.2009 - International Filing Date: 12.05.2009

[C22 : Technology and Characterisation, Session 1] Poster

Poster 0216, avec présentation orale courte (A.Doret)

Chemical disorder can be characterized in silicate glasses using spectral editing in (29)Si solid-state NMR. Resonances of the Q(n)(mX) (i.e. Si(OX)(m)(OSi)(n-m)) molecular motifs, which strongly overlap in the (29)Si solid-state NMR spectra of silicate glasses, can be separated and quantified using 2 to n-quantum filters in INADEQUATE-like experim...

GMAW (Gas Metal Arc Welding) process in direct polarity (wire as cathode) is mainly much more instable that reverse polarity. A comparison of the electrode microstructure, of plasma parameters, of electrics characteristics, of the shape of the arc and of the metallic transfer in the arc between direct and reverse polarity will allow us to better un...

Poster et Communication Orale (M.Dudeck)

Communication orale (A.Doret) + Poster

Communication orale (A.Boutaghane)

Rapport intermédiaire, Contrat GREMI-SAGEM

The nature of the applied shielding gas has a strong influence on arc stability and transfer metal mode of the welding process. In particular, increase of the percentage of carbon dioxide in argon induces the increase of the transition current value from the globular to spray metal transfer mode. This work shows that these effects are linked to the...

Communication orale (F.Valensi)

Rapport intermédiaire, Contrat GREMI-Air Liquide

[Symposium E : Plasmonic nanostructures for application in the life sciences, Poster / EP9] Poster

The dielectric wall surfaces of the annular chamber which are used in Hall Effect Thrusters (HET) to limit the plasma discharge play an important role but yet completely not understood and controlled. In order to investigate the effect of an energy flux on the wall we performed tests with a nanosecond pulsed laser to simulate the energy deposition...

Communication orale (F.Valensi)

The effect of a high power Nd:YAG laser radiation on silver ion-exchanged glasses is investigated. Exposure time, spot size and energy have been varied in order to modify the size and the distribution of the metallic nanoaggregates which are formed under the laser irradiation. Optical absorption spectroscopy has been used to confirm the formation o...

Scalar couplings, recoupled or full dipolar interactions can be used to characterize multinuclear structural molecular motifs in solids, by counting the neighbouring spins in solid-state NMR, opening new ways for the differentiation of overlapping spectral responses which is a limiting factor in many high resolution experiments carried out on disor...