% % This file was created by the TYPO3 extension % bib % --- Timezone: CET % Creation date: 2021-03-08 % Creation time: 08-13-08 % --- Number of references % 15 % @Article { 201-3776, title = {Dynamics of bubbles created by plasma in heptane for micro-gap conditions}, journal = {Journal of the Acoustical Society fo America}, year = {2013}, volume = {134}, pages = {991}, abstract = {The determination of the initial pressure at the bubble wall created by a discharge in heptane for micro-gap conditions cannot be determined straightforwardly by modeling the time-oscillations of the bubble. The resolution of the Gilmore equation gives the same solutions beyond 1 mu s typically for various sets of initial parameters, making impossible the determination of the initial pressure at the bubble wall. Furthermore, the very first instant of the bubble formation is not easily accessible at very short time scales because of the plasma emission. Since the pressure waves propagate in the liquid, it is much easier to gain information on the first instants of the bubble formation by studying the pressure field far from the emission source. Then, it is possible to deduce by modeling what happened at the beginning of the emission of the pressure waves. The proposed solution consists in looking at the oscillations affecting another bubble located at least twice farther from the interelectrode gap than the maximum radius reached by the discharge bubble. The initial plasma pressure can be determined by this method. (C) 2013 Acoustical Society of America.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1121/1.4812255}, author = {Hamdan, A. and Noel, C. and Kosior, F. and Henrion, G. and Belmonte., T.} } @Article { ISI:000322738900034, title = {Dynamics of bubbles created by plasma in heptane for micro-gap conditions}, journal = {JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA}, year = {2013}, volume = {134}, number = {2, 1}, pages = {991-1000}, abstract = {The determination of the initial pressure at the bubble wall created by a discharge in heptane for micro-gap conditions cannot be determined straightforwardly by modeling the time-oscillations of the bubble. The resolution of the Gilmore equation gives the same solutions beyond 1 mu s typically for various sets of initial parameters, making impossible the determination of the initial pressure at the bubble wall. Furthermore, the very first instant of the bubble formation is not easily accessible at very short time scales because of the plasma emission. Since the pressure waves propagate in the liquid, it is much easier to gain information on the first instants of the bubble formation by studying the pressure field far from the emission source. Then, it is possible to deduce by modeling what happened at the beginning of the emission of the pressure waves. The proposed solution consists in looking at the oscillations affecting another bubble located at least twice farther from the interelectrode gap than the maximum radius reached by the discharge bubble. The initial plasma pressure can be determined by this method. (C) 2013 Acoustical Society of America.}, affiliation = {Belmonte, T (Reprint Author), Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, Parc Saurupt,CS 14234, F-54042 Nancy, France. Hamdan, A.; Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, F-54042 Nancy, France.}, note = {Centre de Comp{\'e}tences : ERMIONE informatique et calcul}, publisher = {ACOUSTICAL SOC AMER AMER INST PHYSICS}, address = {STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA}, type = {Article}, language = {English}, ISSN = {0001-4966}, DOI = {10.1121/1.4812255}, author = {Hamdan, A. and Noel, C. and Kosior, F. and Henrion, G. and Belmonte, T.} } @Article { 201-3001, title = {Effects of Ar-H2-N2 microwave plasma on chitosan 1 and its nanoliposomes blend thin films designed for tissue engineering applications}, journal = {Carbohydrate Polymers}, year = {2013}, volume = {93}, number = {2}, pages = {401-411}, abstract = {This work addresses the functionalization of chitosan thin films and its nanoliposomes blend films by a microwave-excited Ar/N2/H2 surface-wave plasma treatment which was found an effective tool to modify surface properties. Changes in the film properties (wettability, chemical composition, morphology) induced by the plasma treatment are studied using water contact angle measurements, X-ray photoelectron spectroscopy and scanning probe microscopy. The results suggest that hydrophilicity of the films is improved by plasma treatment in a plasma condition dependency manner. Water contact angle of chitosan films before and after plasma treatment are, respectively, 101{\^A}\(^{\circ}\) and 27{\^A}\(^{\circ}\). Besides chemical changes on the surface, the nanoliposomes incorporation and plasma treatment also induce morphological modifications. Moreover, a correlation is found between the nanoliposomes composition and size, and the effects of plasma treatment. It is shown that the plasma treatment significantly improves the chitosan film functionalization. The effect of N2 content (88\% and 100\%) in the plasma gas mixture on the film etching is also pointed out.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1016/j.carbpol.2012.12.015}, author = {Zhang, H.Y. and Cleymand, F. and Noel, C. and Kahn, C.J.F. and Linder, M. and Dahoun, A. and Henrion, G. and Arab-Tehrany, E.} } @Article { 201-3781, title = {Effects of Ar-N2-O2 microwave plasma on poly-l-lactic acid thin films designed for tissue engineering}, journal = {Plasma Processes and Polymers}, year = {2013}, volume = {10}, pages = {535-543}, abstract = {Poly-lactic acid (PLA) is the most used biopolymer in both biomedical and food packaging fields to replace petrochemical plastics. The surface properties of PLA thin films were studied before and after plasma treatment to enhance its wettability and its adhesive properties. Based on the experimental design, the most significant parameters of the plasma process were specified. The effect of the cold plasma treatment on the mechanical, topographic composition, thermal and barrier properties of the PLA was carried out using different Ar-N2-O2 gas mixture. Results show that the discharge gas can have a significant influence on the chemical composition and the wettability of the PLA surfaces. As the plasma processing is a surface treatment without affecting the bulk properties, it did not change the PLA properties.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1002/ppap.201200124}, author = {Chichti, E. and Henrion, G. and Cleymand, F. and Jamshidian., M. and Linder, M. and Arab Tehrany, E.} } @Article { 201-3774, title = {Effects of electrical parameters on the plasma electrolytic oxidation of aluminium}, journal = {Surface and Coatings Technology}, year = {2013}, volume = {221}, pages = {70}, abstract = {The plasma electrolytic oxidation (PEO) of aluminium alloys is investigated for different electrical working conditions using a pulsed bipolar current supply. A particular attention is paid to the effect of the anodic current density (from 10 to 90 A dm-2) and current pulse frequency (from 100 to 900 Hz) on the resulting oxide layer. Micro-discharges are characterized during the process by means of fast video imaging with a time and a space resolution of 8 {\^I}¼s and 0.017 mm2, respectively. Correlations are established between themicro-discharge characteristics (surface density, lifetime and size) and the elaborated oxide layers (morphology, growth rate and surface roughness). The highest coating growth rate measured (2.1 {\^I}¼m min-1) is achieved with the combination of the highest current density (75.7 A dm-2) and the highest current pulse frequency (900 Hz). Within these specific current conditions it is concluded that the detrimental effects of numerous micro-discharges are minimized. The results also show that the surface roughness may be largely affected by the presence of long-lived and large micro-discharges which develop over the processed surface. The strongest micro-discharges (live duration up to 0.3 ms and cross-sectional area up to 1 mm2) are mainly observed with the combination of the highest current density (75.7 A dm-2) and the lowest current pulse frequency (100 Hz).}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1016/j.surfcoat.2013.01.029}, author = {Martin, J. and Melhem, A. and Shchedrina, I. and Duchanoy, T. and Nomin{\'e}, A. and Henrion, G. and Czerwiec, T. and Belmonte, T.} } @Article { 201-3783, title = {Enhancement of Anatase Functionalization and Photocatalytic Self-cleaning Properties of Keratins by Microwave-generated Plasma Afterglow}, journal = {Thin Solid Films}, year = {2013}, volume = {545}, pages = {310-319}, abstract = {A microwave-generated plasma afterglow (MWGPA) treatment was applied to keratin fibers to improve their adhesion to anatase nanocrystals by modifying their surface chemical and physical structure. The induced photocatalytic self-cleaning property has significantly been improved by 70\% as evidenced by complete stain decomposition in 6 h only. The effects of gas mixtures, gas flow, treatment distance, treatment duration and power flow of the MWGPA treatment on keratin's surface were investigated. The MWGPA-induced alteration of keratin's surface structure resulted in an increase in the uptake of anatase crystals and thus enhanced photocatalytic self-cleaning activities. The contact angle, absorption time, deposition behavior, adhesion and stability of anatase coating of keratin fibers are discussed. The anatase uptake and coating uniformity were characterized quantitatively using Time-of-Flight Secondary Ion Mass Spectrometry. This efficient and low energy plasma surface activation approach demonstrated potential toward the practical application of anatase in keratinous materials.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1016/j.tsf.2013.07.063}, author = {Tung, W-S. and A. Daoud, W. and Henrion, G.} } @Article { 201-2769, title = {Impacts created on various materials by micro-discharges in heptane: influence of the dissipated charge}, journal = {Journal of Applied Physics}, year = {2013}, volume = {113}, pages = {043301}, abstract = {Modes of energy dissipation in impacts made on various materials (Al, Cu, Fe, and Si) by discharges in heptane are investigated for micro-gap conditions. Bulk metals and thin films of 300 nm in thickness deposited on silicon wafers are used as samples. Positive high voltage pulses with nanosecond rise times make it possible to isolate a single discharge and to study the way the charge delivered by the power supply is transferred to the larger electrode (the sample) in a pin-to-plate configuration. The diameter of the impacts created by the plasma varies linearly versus the charge raised at a power close to 0.5. However, the exact value of the power depends on the material. We also show how the impact morphologies change with the applied charge. At high charges, the diameters of impacts on thin films behave as those made on silicon. At low charges, they behave as the bulk material. Finally, we show that the energy dissipated in impacts is below a few percent.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1063/1.4780786}, author = {Hamdan, A. and Audinot, J.-N. and Migot-Choux C. No{\~A}«l, S. and Henrion, G. and Belmonte, T.} } @Article { ISI:000314724500014, title = {Impacts created on various materials by micro-discharges in heptane: Influence of the dissipated charge}, journal = {JOURNAL OF APPLIED PHYSICS}, year = {2013}, volume = {113}, number = {4}, abstract = {Modes of energy dissipation in impacts made on various materials (Al, Cu, Fe, and Si) by discharges in heptane are investigated for micro-gap conditions. Bulk metals and thin films of 300 nm in thickness deposited on silicon wafers are used as samples. Positive high voltage pulses with nanosecond rise times make it possible to isolate a single discharge and to study the way the charge delivered by the power supply is transferred to the larger electrode (the sample) in a pin-to-plate configuration. The diameter of the impacts created by the plasma varies linearly versus the charge raised at a power close to 0.5. However, the exact value of the power depends on the material. We also show how the impact morphologies change with the applied charge. At high charges, the diameters of impacts on thin films behave as those made on silicon. At low charges, they behave as the bulk material. Finally, we show that the energy dissipated in impacts is below a few percent. (C) 2013 American Institute of Physics. {[}http://dx.doi.org/10.1063/1.4780786]}, affiliation = {Belmonte, T (Reprint Author), Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198, F-54042 Nancy, France. Hamdan, A.; Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198, F-54042 Nancy, France. Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., Inst Jean Lamour, CNRS, UMR 7198, F-54042 Nancy, France.}, note = {Centre de Comp{\'e}tences : ERMIONE informatique et calcul}, publisher = {AMER INST PHYSICS}, address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA}, type = {Article}, language = {English}, ISSN = {0021-8979}, DOI = {10.1063/1.4780786}, author = {Hamdan, A. and Noel, C. and Kosior, F. and Henrion, G. and Belmonte, T.} } @Article { ISI:000325367100003, title = {Interaction of Discharges in Heptane with Silicon Covered by a Carpet of Carbon Nanotubes}, journal = {ADVANCED ENGINEERING MATERIALS}, year = {2013}, volume = {15}, number = {10}, pages = {885-892}, abstract = {Discharges in heptane in pin-to-plate configuration are produced between a platinum wire and a (100)-oriented silicon wafer coated by a carbon nanotube (CNT) carpet. This carpet is used to simulate the behavior of a nanostructured surface in electro-discharge machining (EDM) where small protrusions on the surface could play a similar role. CNTs behave like simple electrical conductors between the discharge and the silicon wafer. They act as if they would focus the current on smaller areas. The average diameter of impacts is about five times smaller if the silicon wafer is coated by a CNT carpet. The underlying silicon surface is heated by the plasma and melts, forming a central spot surrounded by a serrated trailing edge. The current density being about one order of magnitude larger when a CNT carpet is present, the induced magnetic field stirs the molten silicon, creating serrations all around the impact. Hot nanoparticles of carbon coming from the plasma fall and roll randomly on the silicon surface where they create wavy micro-channels. Nanowires that are detached from the surface are covered by nanoparticles of platinum in the plasma and embedded within an amorphous carbon layer deposited on the nanotube. However, these effects can only be observed if the current density is high enough (>approximate to 10A mu m(-2) depending on the material) like in micro-EDM but not in nano-EDM.}, affiliation = {Hamdan, A (Reprint Author), Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198, F-54042 Nancy, France. Hamdan, Ahmad; Migot-Choux, Sylvie; Noel, Cedric; Kosior, Francis; Henrion, Gerard; Belmonte, Thierry, Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198, F-54042 Nancy, France. Audinot, Jean-Nicolas, Ctr Rech Publ Gabriel Lippmann, SAM Dept, L-4422 Belvaux, Luxembourg.}, note = {Centre de Comp{\'e}tences : ERMIONE informatique et calcul}, publisher = {WILEY-V C H VERLAG GMBH}, address = {BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY}, type = {Article}, language = {English}, ISSN = {1438-1656}, DOI = {10.1002/adem.201300106}, author = {Hamdan, Ahmad and Audinot, Jean-Nicolas and Migot-Choux, Sylvie and Noel, Cedric and Kosior, Francis and Henrion, Gerard and Belmonte, Thierry} } @Article { 201-3777, title = {Interaction of Discharges in Heptane with Silicon Covered by a Carpet of Carbon Nanotubes,}, journal = {Advanced Engineering Materials}, year = {2013}, volume = {15}, pages = {885-892}, abstract = {Discharges in heptane in pin-to-plate configuration are produced between a platinum wire and a (100)-oriented silicon wafer coated by a carbon nanotube (CNT) carpet. This carpet is used to simulate the behavior of a nanostructured surface in electro-discharge machining (EDM) where small protrusions on the surface could play a similar role. CNTs behave like simple electrical conductors between the discharge and the silicon wafer. They act as if they would focus the current on smaller areas. The average diameter of impacts is about five times smaller if the silicon wafer is coated by a CNT carpet. The underlying silicon surface is heated by the plasma and melts, forming a central spot surrounded by a serrated trailing edge. The current density being about one order of magnitude larger when a CNT carpet is present, the induced magnetic field stirs the molten silicon, creating serrations all around the impact. Hot nanoparticles of carbon coming from the plasma fall and roll randomly on the silicon surface where they create wavy micro-channels. Nanowires that are detached from the surface are covered by nanoparticles of platinum in the plasma and embedded within an amorphous carbon layer deposited on the nanotube. However, these effects can only be observed if the current density is high enough (>approximate to 10A mu m(-2) depending on the material) like in micro-EDM but not in nano-EDM.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1002/adem.201300106}, author = {Hamdan, A. and Audinot, J.-N. and Migot-Choux, S. and Noel, C. and Kosior, F. and Henrion, G. and Belmonte, T.} } @Article { 201-3778, title = {Interaction of micro-discharges in heptane with metallic multi-layers}, journal = {Applied Surface Science}, year = {2013}, volume = {274}, pages = {378-391}, abstract = {Interaction of discharges in heptane with magnetron-sputtered thin films made of aluminum, copper or iron is studied in a pin-to-plate configuration. The behavior of discharges on thin films can be used to better understand the interaction of discharges with given surfaces and it might also improve the reproducibility of the impacts in order to better control their shape. Single layers and bilayers of metals are characterized after impact by SEM, AFM, micro-EDX and nano-SIMS analyses. Discharges last typically for a few hundreds of nanoseconds and dissipated energies range between 1 and 100 mJ. We show that at low impact energy, copper and aluminum are heated and stretched by surface stress. At intermediate energy, melting occurs, leading to the synthesis of external beads by Marangoni's convection. At high energy, the shape of the impact is defined by the pressure release when the discharge stops. When iron is deposited onto silicon, dewetting is an important mechanism. The columnar structure of the deposit may have two distinct roles. On the one hand, gases trapped in intercolumnar boundaries can produce tiny holes. On the other hand, the shock wave can abrade the outermost and less cohesive part of the film if it is made of columns separated by large porosities. (C) 2013 Elsevier B.V. All rights reserved.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1016/j.apsusc.2013.03.074}, author = {Hamdan, A. and Audinot, J.-N. and Noel, C. and Kosior, F. and Henrion, G. and Belmonte, T.} } @Article { ISI:000318598600058, title = {Interaction of micro-discharges in heptane with metallic multi-layers}, journal = {APPLIED SURFACE SCIENCE}, year = {2013}, volume = {274}, pages = {378-391}, abstract = {Interaction of discharges in heptane with magnetron-sputtered thin films made of aluminum, copper or iron is studied in a pin-to-plate configuration. The behavior of discharges on thin films can be used to better understand the interaction of discharges with given surfaces and it might also improve the reproducibility of the impacts in order to better control their shape. Single layers and bilayers of metals are characterized after impact by SEM, AFM, micro-EDX and nano-SIMS analyses. Discharges last typically for a few hundreds of nanoseconds and dissipated energies range between 1 and 100 mJ. We show that at low impact energy, copper and aluminum are heated and stretched by surface stress. At intermediate energy, melting occurs, leading to the synthesis of external beads by Marangoni's convection. At high energy, the shape of the impact is defined by the pressure release when the discharge stops. When iron is deposited onto silicon, dewetting is an important mechanism. The columnar structure of the deposit may have two distinct roles. On the one hand, gases trapped in intercolumnar boundaries can produce tiny holes. On the other hand, the shock wave can abrade the outermost and less cohesive part of the film if it is made of columns separated by large porosities. (C) 2013 Elsevier B.V. All rights reserved.}, affiliation = {Belmonte, T (Reprint Author), Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, F-54011 Nancy, France. Hamdan, A.; Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, F-54011 Nancy, France. Audinot, J. -N., Ctr Rech Publ Gabriel Lippmann, SAM Dept, L-4422 Belvaux, Luxembourg. Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., CNRS, Inst Jean Lamour, UMR CNRS 7198, F-54011 Nancy, France.}, note = {Centre de Comp{\'e}tences : ERMIONE informatique et calcul}, keywords = {Microplasma; Plasma in liquids; Plasma-surface interaction; Thin films}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, type = {Article}, language = {English}, ISSN = {0169-4332}, DOI = {10.1016/j.apsusc.2013.03.074}, author = {Hamdan, A. and Audinot, J. -N. and Noel, C. and Kosior, F. and Henrion, G. and Belmonte, T.} } @Article { 201-3852, title = {Interaction of streamer in heptane with metallic multi-layers}, journal = {Applied Surface Science}, year = {2013}, volume = {274}, pages = {378-391}, abstract = {Interaction of discharges in heptane with magnetron-sputtered thin films made of aluminum, copper or iron is studied in a pin-to-plate configuration. The behavior of discharges on thin films can be used to better understand the interaction of discharges with given surfaces and it might also improve the reproducibility of the impacts in order to better control their shape. Single layers and bilayers of metals are characterized after impact by SEM, AFM, micro-EDX and nano-SIMS analyses. Discharges last typically for a few hundreds of nanoseconds and dissipated energies range between 1 and 100 mJ. We show that at low impact energy, copper and aluminum are heated and stretched by surface stress. At intermediate energy, melting occurs, leading to the synthesis of external beads by Marangoni{\^a}??s convection. At high energy, the shape of the impact is defined by the pressure release when the discharge stops. When iron is deposited onto silicon, dewetting is an important mechanism. The columnar structure of the deposit may have two distinct roles. On the one hand, gases trapped in intercolumnar boundaries can produce tiny holes. On the other hand, the shock wave can abrade the outermost and less cohesive part of the film if it is made of columns separated by large porosities.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1016/j.apsusc.2013.03.074}, author = {Hamdan, A. and Audinot, J.-N. and Noel, C. and Kosior, F. and Henrion, G. and Belmonte, T.} } @Article { 201-3779, title = {Plasma-surface interaction in heptane}, journal = {Journal of Applied Physics}, year = {2013}, volume = {113}, pages = {213303}, abstract = {The main processes related to discharges between pin and plate electrodes in hydrocarbon liquid (heptane) are modelled for micro-gap (from 10 to 100 mu m) conditions. When a plasma channel hits the surface, a micro-crater is created. The different phenomena controlling the geometry (shape and dimension) of a single crater are described and included in a theoretical model developed for the specific case of pure aluminium. The influence of the most important parameters affecting the geometry of the crater is discussed. Among them, one finds the pressure exerted by the plasma on the liquid metal. It is found that the distribution of the pressure applied on the liquid pool changes significantly the way the plasma shapes the pool. It is assumed that at high charges, the pressure profile is tilted from the channel axis, leading to the formation of a central protrusion. On the other hand, we demonstrate that Thomson-Marangoni forces play an important role for crater diameters smaller than 5 mu m. Then, the choice of the first derivative of the surface tension with respect to the temperature is a key factor. This effect is strongly related to the way convection displaces matter in the liquid pool. Finally, the quenching step is sufficiently fast to freeze the liquid shape as soon as the plasma vanishes. (C) 2013 AIP Publishing LLC.}, note = {D{\'e}partement CP2S : Exp{\'e}riences et Simulations des Plasmas R{\'e}actifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS}, DOI = {http://dx.doi.org/10.1063/1.4809766}, author = {Hamdan, A. and Kosior, F. and Noel, C. and Henrion, G. and Audinot, J.-N. and Gries, T. and Belmonte, T.} } @Article { ISI:000320674500016, title = {Plasma-surface interaction in heptane}, journal = {JOURNAL OF APPLIED PHYSICS}, year = {2013}, volume = {113}, number = {21}, abstract = {The main processes related to discharges between pin and plate electrodes in hydrocarbon liquid (heptane) are modelled for micro-gap (from 10 to 100 mu m) conditions. When a plasma channel hits the surface, a micro-crater is created. The different phenomena controlling the geometry (shape and dimension) of a single crater are described and included in a theoretical model developed for the specific case of pure aluminium. The influence of the most important parameters affecting the geometry of the crater is discussed. Among them, one finds the pressure exerted by the plasma on the liquid metal. It is found that the distribution of the pressure applied on the liquid pool changes significantly the way the plasma shapes the pool. It is assumed that at high charges, the pressure profile is tilted from the channel axis, leading to the formation of a central protrusion. On the other hand, we demonstrate that Thomson-Marangoni forces play an important role for crater diameters smaller than 5 mu m. Then, the choice of the first derivative of the surface tension with respect to the temperature is a key factor. This effect is strongly related to the way convection displaces matter in the liquid pool. Finally, the quenching step is sufficiently fast to freeze the liquid shape as soon as the plasma vanishes. (C) 2013 AIP Publishing LLC.}, affiliation = {Belmonte, T (Reprint Author), Univ Lorraine, CNRS, Dept CP2S, Inst Jean Lamour, Parc Saurupt,CS 50840, F-54011 Nancy, France. Hamdan, A.; Kosior, F.; Noel, C.; Henrion, G.; Gries, T.; Belmonte, T., Univ Lorraine, CNRS, Dept CP2S, Inst Jean Lamour, F-54011 Nancy, France. Audinot, J-N, Ctr Rech Publ Gabriel Lippmann, SAM Dept, L-4422 Belvaux, Luxembourg.}, note = {Centre de Comp{\'e}tences : ERMIONE informatique et calcul}, publisher = {AMER INST PHYSICS}, address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA}, type = {Article}, language = {English}, DOI = {10.1063/1.4809766}, author = {Hamdan, A. and Kosior, F. and Noel, C. and Henrion, G. and Audinot, J-N and Gries, T. and Belmonte, T.} }