Jean-Christophe Valmalette
IM2NP Site de Toulon
Université Sud Toulon Var, Bâtiment R
BP 132
83957 La Garde Cedex
téléphone : + 33 (0) 4 94 14 24 76
fax : +33 (0) 4 94 14 21 68
mail : jean-christophe.valmalette _AT_
pour plus d'info :

Professeur, Université Sud Toulon-Var

Equipe Nanostructuration

Responsable du Master Recherche Matériaux : Durabilité-Fiabilité

Domaines d'activité :
Nanostructuration - propriétés thermo-optiques modulables - effets de tailles et transition de phase - spectroscopie Raman et infrarouge - capteurs micro-catalytiques - synthèse nanoparticules

Publications récentes :

Hashishin, T., Tan, Z., Yamamoto, K., Qiu, N., Kim, J., Numako, C., . . . Ohara, S. (2014). Quenching ilmenite with a high-temperature and high-pressure phase using super-high-energy ball milling. Scientific Reports, 4. doi: 10.1038/srep04700

Itoh, H., Suzuki, Y., Sekino, T., Valmalette, J.-C., & Tohno, S. (2014). Electrospray deposition and characterization of Cu2O thin films with ring-shaped 2-D network structure. Journal of the Ceramic Society of Japan, 122(1425), 361-366. doi: 10.2109/jcersj2.122.361

Lin, Y.-P., Ksari, Y., Prakash, J., Giovanelli, L., Valmalette, J.-C., & Themlin, J.-M. (2014). Nitrogen-doping processes of graphene by a versatile plasma-based method. Carbon, 73, 216-224. doi: 10.1016/j.carbon.2014.02.05Z

Sato, K., Arai, M., Valmalette, J.-C., & Abe, H. (2014). Surface Capping-Assisted Hydrothermal Growth of Gadolinium-Doped CeO2 Nanocrystals Dispersible in Aqueous Solutions. Langmuir, 30(40), 12049-12056. doi: 10.1021/la502861k

Taoufyq, A., Guinneton, F., Valmalette, J. C., Arab, M., Benlhachemi, A., Bakiz, B., . . . Gavarri, J. R. (2014). Structural, vibrational and luminescence properties of the (1-x) CaWO4-xCdWO(4) system. Journal of Solid State Chemistry, 219, 127-137. doi: 10.1016/j.jssc.2014.07.017

Valmalette, J.-C., Tan, Z., Abe, H., & Ohara, S. (2014). Raman scattering of linear chains of strongly coupled Ag nanoparticles on SWCNTs. Scientific Reports, 4. doi: 10.1038/srep05238

Sato, K., Yokoyama, Y., Valmalette, J.-C., Kuruma, K., Abe, H., & Takarada, T. (2013). Hydrothermal Growth of Tailored SnO2 Nanocrystals. Crystal Growth & Design, 13(4), 1685-1693. doi: 10.1021/cg400013q

Bourja, L., Bakiz, B., Benlhachemi, A., Ezahri, M., Villain, S., Favotto, C., . . . Gavarri, J. R. (2012). Structural modifications of nanostructured ceria CeO(2,)xH(2)O during dehydration process. Powder Technology, 215-16, 66-71. doi: 10.1016/j.powtec.2011.09.008

Porte, L., Abel, M., Amsalem, P., Bocquet, F., Bocquet, F. C., Chevallier, V., . . . Themlin, J. M. (2012). Self-organised growth of molecular arrays at surfaces. International Journal of Nanotechnology, 9(3-7), 325-354. doi: 10.1504/ijnt.2012.045337

Valmalette, J. C., Dombrovsky, A., Brat, P., Mertz, C., Capovilla, M., & Robichon, A. (2012). Light- induced electron transfer and ATP synthesis in a carotene synthesizing insect. Scientific Reports, 2. doi: 10.1038/srep00579

D'Elia, D., Beauger, C., Hochepied, J.-F., Rigacci, A., Berger, M.-H., Keller, N., . . . Achard, P. (2011). Impact of three different TiO2 morphologies on hydrogen evolution by methanol assisted water splitting: Nanoparticles, nanotubes and aerogels. International Journal of Hydrogen Energy, 36(22), 14360-14373. doi: 10.1016/j.ijhydene.2011.08.007

Merlen, A., Chevallier, V., Valmalette, J. C., Patrone, L., Torchio, P., Vedraine, S., . . . Moula, G. (2011). Surface enhanced spectroscopy with gold nanostructures on silicon and glass substrates. Surface Science, 605(13-14), 1214-1218. doi: 10.1016/j.susc.2011.04.004

Gucciardi, P. G., & Valmalette, J.-C. (2010). Different longitudinal optical-transverse optical mode amplification in tip enhanced Raman spectroscopy of GaAs (001). Applied Physics Letters, 97(26). doi: 10.1063/1.3532841

Merlen, A., Chevallier, V., Valmalette, J. C., Lagugne-Labarthet, F., & Harte, E. (2010). Surface Enhanced Spectroscopy of Organic Molecules Deposited on Nanostructured Gold Surfaces. In P. M. Champion & L. D. Ziegler (Eds.), Xxii International Conference on Raman Spectroscopy (Vol. 1267, pp. 920-921).

Romann, J., Valmalette, J.-C., Chevallier, V., & Merlen, A. (2010). Surface Interactions between Molecules and Nanocrystals in Copper Oxalate Nanostructures. Journal of Physical Chemistry C, 114(24), 10677-10682. doi: 10.1021/jp9082344

Bourja, L., Bakiz, B., Benlhachemi, A., Ezahri, M., Valmalette, J. C., Villain, S., & Gavarri, J. R. (2009). Structural and Raman Vibrational Studies of CeO2-Bi2O3 Oxide System. Advances in Materials Science and Engineering. doi: 10.1155/2009/502437

Merlen, A., Gadenne, V., Romann, J., Chevallier, V., Patrone, L., & Valmalette, J. C. (2009). Surface enhanced Raman spectroscopy of organic molecules deposited on gold sputtered substrates. Nanotechnology, 20(21). doi: 10.1088/0957-4484/20/21/215705

Merlen, A., Valmalette, J. C., Gucciardi, P. G., de la Chapelle, M. L., Frigoute, A., & Ossikovskie, R. (2009). Depolarization effects in tip-enhanced Raman spectroscopy. Journal of Raman Spectroscopy, 40(10), 1361-1370. doi: 10.1002/jrs.2424

Romann, J., Chevallier, V., Merlen, A., & Valmalette, J.-C. (2009). Self-Organized Assembly of Copper Oxalate Nanocrystals. Journal of Physical Chemistry C, 113(13), 5068-5074. doi: 10.1021/jp805335f

Guinneton, F., Sauques, L., Valmalette, J. C., Cros, F., & Gavarri, J. R. (2005). Role of surface defects and microstructure in infrared optical properties of thermochromic VO2 materials. Journal of Physics and Chemistry of Solids, 66(1), 63-73. doi: 10.1016/j.jpcs.2004.08.032

Isa, M., Valmalette, J. C., Muller, C., & Leroux, C. (2005). Evolution in time of a gold-zirconia nanopowder at room temperature: Nucleation growth of gold nanoparticles. Chemistry of Materials, 17(24), 5920-5927. doi: 10.1021/cm040187j

Isa, M., Valmalette, J. C., Muller, C., Lomello-Tafin, M., Gas, P., & Elkaim, E. (2004). Study of the nano structuration of ZrAu alloy near the ambient temperature by X-ray diffraction and thermal analyses. Journal of Alloys and Compounds, 373(1-2), 96-103. doi: 10.1016/j.jallcom.2003.10.037

Guinneton, F., Sauques, L., Valmalette, J. C., Cros, F., & Gavarri, J. R. (2004). Optimized infrared switching properties in thermochromic vanadium dioxide thin films: role of deposition process and microstructure. Thin Solid Films, 446(2), 287-295. doi: 10.1016/j.tsf.2003.09.062

Moreau, J. M., Isa, M., Chaou, A. A., Lomello-Tafin, M., Jourdan, J., Galez, P., . . . Soubeyroux, J. L. (2004). Neutron powder diffraction study of the crystal structures of ZrAu. Journal of Alloys and Compounds, 373(1-2), 16-27. doi: 10.1016/j.jallcom.2003.10.056

Thommerel, E., Madigou, W., Villain, S., Musso, J., Valmalette, J. C., & Gavarri, J. R. (2003). Microstructure modifications and modulated piezoelectric responses in PLZT/Al2O3 composites. Materials Science and Engineering B-Solid State Materials for Advanced Technology, 97(1), 74-82. doi: 10.1016/s0921-5107(02)00407-5

Sanz, N., Lomello-Tafin, M., Valmalette, J. C., Isa, M., & Galez, P. (2002). Preparation and characterization of Au/ZrO2 nanoparticles obtained by oxidation of ZrXAuY alloy. Materials Science & Engineering C-Biomimetic and Supramolecular Systems, 19(1-2), 79-83. doi: 10.1016/s0928-4931(01)00446-5

Thommerel, E., Valmalette, J. C., Musso, J., Villain, S., Gavarri, J. R., & Spada, D. (2002). Relations between microstructure, electrical percolation and corrosion in metal-insulator composites. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 328(1-2), 67-79. doi: 10.1016/s0921-5093(01)01680-x

Valmalette, J. C., & Isa, M. (2002). Size effects on the stabilization of ultrafine zirconia nanoparticles. Chemistry of Materials, 14(12), 5098-5102. doi: 10.1021/cm021233n

Valmalette, J. C., Isa, M., Passard, M., & Lomello-Tafin, M. (2002). Ultrafast nanostructuring oxidation of crystallized intermetallic ZrAu at 25 degrees C. Chemistry of Materials, 14(5), 2048-2054. doi: 10.1021/cm011184z

Guinneton, F., Sauques, L., Valmalette, J. C., Cros, F., & Gavarri, J. R. (2001). Comparative study between nanocrystalline powder and thin film of vanadium dioxide VO2: electrical and infrared properties. Journal of Physics and Chemistry of Solids, 62(7), 1229-1238. doi: 10.1016/s0022-3697(01)00013-0

Muller, C., Valmalette, J. C., Soubeyroux, J. L., Bouree, F., & Gavarri, J. R. (2001). Structural disorder and ionic conductivity in LiVO3: A neutron powder diffraction study from 340 to 890 K. Journal of Solid State Chemistry, 156(2), 379-389. doi: 10.1006/jssc.2000.9009

Guinneton, F., Valmalette, J. C., & Gavarri, J. R. (2000). Nanocrystalline vanadium dioxide: synthesis and mid-infrared properties. Optical Materials, 15(2), 111-114. doi: 10.1016/s0925-3467(00)00023-9

Jongen, N., Bowen, P., Lemaitre, J., Valmalette, J. C., & Hofmann, H. (2000). Precipitation of self-organized copper oxalate polycrystalline particles in the presence of hydroxypropylmethylcellulose (HPMC): Control of morphology. Journal of Colloid and Interface Science, 226(2), 189-198. doi: 10.1006/jcis.2000.6747

Carrot, G., Valmalette, J. C., Plummer, C. J. G., Scholz, S. M., Dutta, J., Hofmann, H., & Hilborn, J. G. (1998). Gold nanoparticle synthesis in graft copolymer micelles. Colloid and Polymer Science, 276(10), 853-859. doi: 10.1007/s003960050321

Vacassy, R., Lemaire, L., Valmalette, J. C., Dutta, J., & Hofmann, H. (1998). Synthesis of zirconia-coated gold nanoparticles. Journal of Materials Science Letters, 17(19), 1665-1667. doi: 10.1023/a:1006658415927

Valmalette, J. C., & Gavarri, J. R. (1998). High efficiency thermochromic VO2(R) resulting from the irreversible transformation of VO2(B). Materials Science and Engineering B-Solid State Materials for Advanced Technology, 54(3), 168-173. doi: 10.1016/s0921-5107(98)00148-2

Dutta, J., Hofmann, H., Houriet, R., Valmalette, J. C., & Hofmeister, H. (1997). Crystallization of nanosized silicon powder prepared by plasma-induced clustering reactions. Aiche Journal, 43(11), 2610-2615. doi: 10.1002/aic.690431303

Hornyak, G. L., Patrissi, C. J., Martin, C. R., Valmalette, J. C., Dutta, J., & Hofmann, H. (1997). Dynamical Maxwell-Garnett optical modeling of nanogold porous alumina composites: Mie and kappa influence on absorption maxima. Nanostructured Materials, 9(1-8), 575-578. doi: 10.1016/s0965-9773(97)00128-1

Hornyak, G. L., Patrissi, C. J., Oberhauser, E. B., Martin, C. R., Valmalette, J. C., Lemaire, L., . . . Hofmann, H. (1997). Effective medium theory characterization of Au/Ag nanoalloy porous alumina composites. Nanostructured Materials, 9(1-8), 571-574. doi: 10.1016/s0965-9773(97)00127-x

Valmalette, J. C., Houriet, R., Hofmann, H., & Gavarri, J. R. (1997). Formation of N2O during the thermal decomposition of ammonium salts (NH4)(a)MxOy (M=V, Cr, Mo and W). European Journal of Solid State and Inorganic Chemistry, 34(4), 317-329.

Valmalette, J. C., Lemaire, L., Hornyak, G. L., Dutta, J., & Hofmann, H. (1996). Optical properties of metal cluster based nanocomposites. Analusis, 24(6), M23-M25.

Valmalette, J. C., Gavarri, J. R., & Satre, P. (1995). A NEW MECHANISM FOR THE THERMAL-DECOMPOSITION OF AMMONIUM HEXAVANADATE - FORMATION OF N2O. European Journal of Solid State and Inorganic Chemistry, 32(1), 71-77.

Valmalette, J. C., & Gavarri, J. R. (1994). VANADIUM DIOXIDE POLYMER COMPOSITES - THERMOCHROMIC BEHAVIOR AND MODELING OF OPTICAL TRANSMITTANCE. Solar Energy Materials and Solar Cells, 33(2), 135-144. doi: 10.1016/0927-0248(94)90202-x




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