Institut Charles Sadron
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- Patrick Kekicheff
Patrick Kekicheff
plate-forme de haute technologie sur synchrotron SOLEIL
pour l'étude de la structure et du comportement des matériaux
de l'échelle moléculaire et nanométrique à l'échelle mésoscopique et macroscopique
Thématiques de recherche
- Tensioactifs (agrégats, mésophases, membranes).
- Systèmes colloïdaux et nanoparticules.
- Polymères et polyélectrolytes.
- Fluides supramoléculaires.
- Nanomatériaux et Manipulation de structures nanométriques.
- Mousses liquides et solides (polymériques).
- Cristaux liquides.
- Structure. Transitions de phase.
- Interactions moléculaires & Forces entre surfaces :
interactions de double-couche électrique, d'hydratation, de corrélations ion - ion, de volume exclu, dues aux liaisons hydrogène
interactions spécifiques entre entités biologiques
- Adhésion.
- Mouillage.
- Films minces. Recouvrements de substrats.
- Electronique supramoléculaire, cellules solaires.
- Liquides ioniques.
- Défauts dans structures. Physique des craquelures. Vieillissement.
- Conservation du patrimoine et préservation de l'héritage culturel : peintures anciennes sur bois (XVe s.)
Expériences et techniques
- Diffusion et diffraction de rayons X et de neutrons, micro-tomographie X, réflectivité X et neutrons, GISAXS, GIWAXS, fluorescence X, XANES
générateurs conventionnels, anode tournante, source synchrotron, neutrons froids
- Mesure des Forces de surface et des Interactions à des distances moléculaires :
Surface Force Apparatus (SFA)
Microscope à Force Atomique (AFM)
SFA couplé avec rayons X (SFAX)
- Microscopie électronique (T.E.M., S.E.M.)
- Résonance Magnétique Nucléaire (R.M.N. solide)
- Propriétés mécaniques des films minces : déformation, usure, nano-indentation
- Analyse Thermique (A.T.D. et D.S.C.)
Publications
2021
Meklesh, V.; Kékicheff, P. (2021), Bending elastic modulus of a polymer-doped lyotropic lamellar phase, Journal of Colloid and Interface Science 582 : 1158-1178
2022
Janas, A.; Mecklenburg, M.F.; Fuster-Lopez, L.; Kozlowski, R.; Kekicheff, P.; Favier, D.; Andersen, C.K.; Scharff, M.; Bratasz, L. (2022), Shrinkage and mechanical properties of drying oil paints,
Heritage Science,10(1) :
link2021
Steck, K.; Hamann, M.; Andrieux, S.; Muller, P.; Kekicheff, P.; Stubenrauch, C.; Drenckhan, W. (2021), Fluorocarbon Vapors Slow Down Coalescence in Foams,
Advanced Materials Interfaces,8(20) :
linkSchwaller, D.; Zapien-Castillo, S.; Carvalho, A.; Combet, J.; Collin, D.; Jacomine, L.; Kekicheff, P.; Heinrich, B.; Lamps, J.-P.; Diaz-Zavala, N.P.; Mesini, P.J. (2021), Gel-to-gel non-variant transition of an organogel caused by polymorphism from nanotubes to crystallites,
Soft Matter,17(16) : 4386-4394
linkGalerne, M.; Heinrich, B.; Hemmerle, A.; Fontaine, P.; Giuseppone, N.; Kekicheff, P. (2021), Spatially Addressed Supramolecular Nanowires: A Full Structural Characterization by GIWAXS,
Acs Applied Polymer Materials,3(2) : 661-670
linkMeklesh, V.; Kekicheff, P. (2021), Bending elastic modulus of a polymer -doped lyotropic lamellar phase,
Journal Of Colloid And Interface Science,582(B) : 1158-1178
link2020
Bratasz, L.; Akoglu, K.G.; Kekicheff, P. (2020), Fracture saturation in paintings makes them less vulnerable to environmental variations in museums,
Heritage Science,8(1) :
link2019
Kekicheff, P. (2019), The long-range attraction between hydrophobic macroscopic surfaces,
Advances In Colloid And Interface Science,270() : 191-215
linkDabo, M.; Roland, T.; Dalongeville, G.; Gauthier, C.; Kekicheff, P. (2019), Ad-hoc modeling of closed-cell foam microstructures for structure-properties relationships,
European Journal Of Mechanics A-Solids,75() : 128-141
linkKekicheff, P.; Contal, C. (2019), Cationic-Surfactant-Coated Mica Surfaces below the Critical Micellar Concentration: 1. Patchy Structures As Revealed by Peak Force Tapping AFM Mode,
Langmuir,35(8) : 3087-3107
link2018
Kekicheff, P.; Iss, J.; Fontaine, P.; Johner, A. (2018), Direct Measurement of Lateral Correlations under Controlled Nanoconfinement,
Physical Review Letters,120(11) :
link2016
Kekicheff, P.; Dabo, M.; Dalongeville, G.; Gauthier, C.; Roland, T. (2016), Polymeric Solid Foams: Microstructure, Topology and Defects Determined by High Resolution X-Ray Microtomography,
Macromolecular Symposia,369(1) : 56-66
linkSheiko, N.; Kekicheff, P.; Marie, P.; Schmutz, M.; Jacomine, L.; Perrin-Schmitt, F. (2016), PEEK (polyether-ether-ketone)-coated nitinol wire: Film stability for biocompatibility applications,
Applied Surface Science,389() : 651-665
linkHerrmann, L.; Kekicheff, P. (2016), Effect of Dissolved Polymer on the Elasticity and Plasticity of a Lyotropic Lamellar Mesophase,
Macromolecular Symposia,359(1, Si) : 88-103
link2015
Bauer, M.; Kekicheff, P.; Iss, J.; Fajolles, C.; Charitat, T.; Daillant, J.; Marques, C.M. (2015), Sliding tethered ligands add topological interactions to the toolbox of ligand-receptor design,
Nature Communications,6() :
link2014
Kekicheff, P. (2014), From Heterocoagulation to Biorecognition: Preparation of Surfaces for Direct Measurement of Their Interactions in a Surface Force Apparatus,
Macromolecular Symposia,335(1) : 24-42
linkHerrmann, L.; Johner, A.; Kekicheff, P. (2014), Interactions between Charged Lamellae in Aqueous Solution,
Physical Review Letters,113(26) :
link2013
Kekicheff, P.; Schneider, G.F.; Decher, G. (2013), Size-Controlled Polyelectrolyte Complexes: Direct Measurement of the Balance of Forces Involved in the Triggered Collapse of Layer-by-Layer Assembled Nanocapsules,
Langmuir,29(34) : 10713-10726
linkBauer, M.; Bernhardt, M.; Charitat, T.; Kekicheff, P.; Fajolles, C.; Fragneto, G.; Marques, C.M.; Daillant, J. (2013), Membrane insertion of sliding anchored polymers,
Soft Matter,9(5) : 1700-1710
link2005
Kulcsar, A.; Voegel, J.C.; Schaaf, P.; Kekicheff, P. (2005), Glassy state of polystyrene sulfonate/polyallylamine polyelectrolyte multilayers revealed by the surface force apparatus,
Langmuir,21(4) : 1166-1170
link2004
Kulcsar, A.; Lavalle, P.; Voegel, J.C.; Schaaf, P.; Kekicheff, P. (2004), Interactions between two polyelectrolyte multilayers investigated by the surface force apparatus,
Langmuir,20(2) : 282-286
link2001
Kekicheff, P.; Laughlin, R.G.; Munyon, R.L. (2001), Diffusive interfacial transport: A new approach to concentrated protein solution studies,
Langmuir,17(16) : 4693-4696
link