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Hamdan, Ahmad

Professeur adjoint

Contact :

  • Téléphone 514-343-2288 Pav. PAVILLON ROGER-GAUDRY \ bur. F412

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Hamdan, Ahmad

Présentation

Au Département de Physique de l'Université de Montréal, je suis professeur adjoint en Physique des plasmas pour la synthèse et fonctionnalisation des nanomatériaux.

Je m'intéresse aux plasmas à la pression atmosphérique et aux interactions plasmas-matière, en particulier celle qui est en phase liquide. Dans ce contexte, mes activités de recherche sont subdivisées en trois axes : plasma en contact avec le liquide, plasma dans le liquide et plasma dans un milieu diphasique (par exemple mélange de deux liquides immiscibles ou mélange air-liquide, c.à.d. bulles). 

En plus de la compréhension fondamentale de la science de cette nouvelle famille des plasmas, je développe des applications originales, innovantes et prometteuses. Bien que le champ d’application soit extrêmement large, je m’intéresse à court terme à appliquer les plasmas en phase liquide dans la stérilisation des eaux, la synthèse des nanomatériaux et la production des carburants propres.

Bien que le champ de recherche '' plasmas en phase liquide '' est relativement nouveau, les premiers résultats ont montré, d'une part, qu'il y a une très belle physique à étudier et à découvrir et, d'autre part, une potentielle énorme pour résoudre des problématiques sérieuses au niveau mondial.

Expertises de recherche

Décharges électriques nanoseconde dans les liquides ;

Décharges électriques dans des milieux diphasiques ;

Diagnostiques électriques et optiques des plasmas ;

Plasmas induits par lasers ;

Plasmas à haute fréquence (RF et microonde) ;

Interaction plasma-matière ;

Synthèse des nanomatériaux ;

Stérillisation des eaux par plasmas ;

Reformage des fiouls par plasmas ;

Champs d'expertise

Publications principales

  1. A Hamdan, H Kabbara, C Noel, J Ghanbaja, A Redjaimia, T Belmonte (2018). Synthesis of two-dimensional lead sheets by spark discharge in liquid nitrogen. Particuology (In Press). (www.sciencedirect.com/science/article/pii/S1674200118300300)
  2. J-L Liu, H W Park, A Hamdan, M S Cha (2018). In-liquid arc plasma jet and its application to phenol degradation. Journal of Physics D: Applied Physics 51 114005 (9pp) (iopscience.iop.org/article/10.1088/1361-6463/aaada2/meta)
  3. R.K. Gangwar, A. Hamdan, L. Stafford (2017). Nanoparticle synthesis by high-density plasma sustained in liquid organosilicon precursors. Journal of Applied Physics 122, 243301 (aip.scitation.org/doi/10.1063/1.5006479)
  4. A Hamdan, M S Cha, R Abdul Halim, D Anjum (2017). Synthesis of SiOC:H nanoparticles by electrical discharge in hexamethyldisilazane and water. Plasma Processes and Polymers 14 (12) (onlinelibrary.wiley.com/doi/10.1002/ppap.201700089/full)
  5. A Hamdan, H Kabbara, M-A Courty, M S Cha, T Belmonte (2017). Multi-Strands synthesis of carbon-metal nanocomposites by discharges in heptane between two metallic electrodes. Plasma Chem Plasma Process 1-22. (link.springer.com/article/10.1007/s11090-017-9816-8)
  6. A Hamdan, K Čerņevičs, M S Cha (2017). The effect of electrical conductivity on nanosecond discharges in distilled water and in methanol with argon bubbles. Journal of Physics D: Applied Physics 50 185207 (8pp) (iopscience.iop.org/article/10.1088/1361-6463/aa6969)
  7. A Hamdan, F Valade, J Margot, F Vidal, J-P Matte (2017). Space and time structure of helium pulsed surface-wave discharges at intermediate pressures (5 - 50 Torr). Plasma Sources Sci. Technol. 26 015001 (10pp). (iopscience.iop.org/article/10.1088/0963-0252/26/1/015001)
  8. G Al Makdessi, A Hamdan, J Margot, Richard Clergereaux (2017). Measurement of negatively-charged species by laser-induced photodetachment in a magnetically confined low-pressure argon-acetylene plasma. Journal Plasma Sources Science and Technology, 26(8), 085001 (9pp). (iopscience.iop.org/article/10.1088/1361-6595/aa7806/meta)
  9.  A Hamdan, M S Cha (2016). Low-dielectric layer increases nanosecond electric discharges in distilled water. AIP Advances 6, 105112. (scitation.aip.org/content/aip/journal/adva/6/10/10.1063/1.4966589)
  10. A Hamdan, M S Cha (2016). Nanosecond Discharge in Bubbled Liquid n-Heptane: Effects of Gas Composition and Water Addition. IEEE Trans. Plas. Sci. 4(12), 2988-2994. (ieeexplore.ieee.org/document/7556309/)
  11. A Hamdan, M Cha (2016). The effects of gaseous bubble composition and gap distance on the characteristics of nanosecond discharges in distilled water. Journal of Physics D: Applied Physics 49, 245203. (iopscience.iop.org/article/10.1088/0022-3727/49/24/245203/pdf)
  12.  A Hamdan, G Makdessi, J Margot (2016). Deposition of a-C:H films by RF magnetized plasma in Ar/C2H2 mixture at very low pressure. Thin Solid Films, 599, 84-97. (www.sciencedirect.com/science/article/pii/S0040609015013073)
  13. A Hamdan, M Cha (2015). Ignition modes of nanosecond discharge with bubbles in distilled water. Journal of Physics D: Applied Physics 48 (40), 405206. (iopscience.iop.org/article/10.1088/0022-3727/48/40/405206)
  14. A Hamdan, J Margot, F Vidal, J-P Matte (2015). Characterization of helium surface-wave plasmas at intermediate pressures (5–50 Torr): temperatures and density of metastable atoms in the 23S level. Journal of Physics D: Applied Physics, 48(3), 035202. (iopscience.iop.org/0022-3727/48/3/035202)
  15. M S Daoud, A Hamdan, J Margot (2015). Influence of surrounding gas, composition and pressure on plasma plume dynamics of nanosecond pulsed laser-induced aluminum plasmas. AIP Advances 5, 107143. (scitation.aip.org/content/aip/journal/adva/5/10/10.1063/1.4935100)
  16. M S Daoud, A Hamdan, J Margot (2015). Axial- and radial-resolved electron density and excitation temperature of aluminum plasma induced by nanosecond laser: Effect of the ambient gas composition and pressure. AIP Advances 5, 117136. (scitation.aip.org/content/aip/journal/adva/5/11/10.1063/1.4936251)
  17. A Hamdan, C Noël, J Ghanbaja, T Belmonte (2014). Comparison of aluminium nanostructures created by discharges in various dielectric liquids. Plasma Chemistry and Plasma Processing, 1 – 14. (link.springer.com/article/10.1007/s11090-014-9564-y)
  18. A Hamdan, I Marinov, A Rousseau, T Belmonte (2014). Microdischarge ignition in liquid heptane. IEEE Transactions on Plasma Science, 42 2616–2617. (ieeexplore.ieee.org/xpls/abs_all.jsp)
  19. A Hamdan, C Noël, T Belmonte (2014). Synthesis of carbon fibres by electrical discharges in heptane. Materials Letters 135 115–118. (www.sciencedirect.com/science/article/pii/S0167577X14014268)
  20. A Hamdan, I Marinov, A Rousseau, T Belmonte (2014). Time-resolved imaging of nanosecond-pulsed micro-discharges in heptane, J. Phys. D: Appl. Phys. 47 055203 (8pp). (iopscience.iop.org/0022-3727/47/5/055203)
  21. T Belmonte, A Hamdan, F Kosior, C Noel, G Henrion (2014). Interaction of discharges with electrode surfaces in dielectric liquids: application to nanoparticles synthesis. J. Phys. D: Appl. Phys. 47 224016. (iopscience.iop.org/0022-3727/47/22/224016)
  22. J-N Audinot, A Hamdan, P Grysan, Y Fleming, C Noel, F Kosior, G Henrion, T Belmonte (2014). Combined SIMS and AFM study of complex structures of streamers on metallic multi-layers. Surface and Interface Analysis, 46 397–400. (onlinelibrary.wiley.com/doi/10.1002/sia.5635/abstract)
  23. A Hamdan, C Noël, F Kosior, G Henrion, T Belmonte (2013). Impacts created on various materials by micro-discharges in heptane: influence of the dissipated charge. Journal of Applied Physics 113, 043301. (scitation.aip.org/content/aip/journal/jap/113/4/10.1063/1.4780786)
  24. A Hamdan, C Noël, F Kosior, G Henrion, T Belmonte (2013). Dynamics of bubbles created by plasma in heptane for micro-gap conditions. J. Acoust. Soc. Am. 134 (2) 991–1000. (scitation.aip.org/content/asa/journal/jasa/134/2/10.1121/1.4812255)
  25. A Hamdan, C Noël, J Ghanbaja, S Migot-Choux, T Belmonte (2013). Synthesis of platinum embedded in amorphous carbon by micro-gap discharge in heptane. Materials Chemistry and Physics 142 199-206.(www.sciencedirect.com/science/article/pii/S0254058413005294)
  26. A Hamdan, F Kosior, C Noel, G Henrion, J-N Audinot, T Belmonte (2013). Plasma-surface interaction in heptane. Journal of Applied Physics, 113, 213303. (scitation.aip.org/content/aip/journal/jap/113/21/10.1063/1.4809766)
  27. A Hamdan, J-N Audinot, C Noël, F Kosior, G Henrion, T Belmonte (2013). Interaction of streamer in heptane with metallic multi-layers. Journal of Appl. Surf. Sci. 274 378 – 391. (www.sciencedirect.com/science/article/pii/S0169433213005424)
  28. A Hamdan, J-N Audinot, S Migot-Choux, C Noel, F Kosior, G Henrion, T Belmonte (2013). Interaction of discharges in heptane with carpets of carbon nanotubes. Advanced Engineering Materials, 15 885 – 892.(onlinelibrary.wiley.com/doi/10.1002/adem.201300106/full)

Cours donnés au département ce trimestre