1. ESF COST P21 – WG2 Report 2007, Marne la Vallée 13/11/2007 COST P21 “Physics of Droplets” WORKING GROUP 2 “Droplet Coating” - 2007 Activity Report - Libero Liggieri (WG Chairman)

2. ESF COST P21 – WG2 Report 2007, Marne la Vallée 13/11/2007 1. Instrumental ● dynamic interfacial tension  (t) ● shear + dilational rheology ● dynamic contact angle  (t) ● droplet coalescence ● short characteristic times 2. Systems ● amphiphiles (+) ● micro/nanoparticles ● equilibrium ● dynamics 3. Models ● coupling of bulk and surfaces ● interactions at interface 4. Applications ● foams ● emulsions ● disperse liquids ● coalescence ● wetting-dewetting ● 2D-3D rheology WG2 - Working programme

3. ESF COST P21 – WG2 Report 2007, Marne la Vallée 13/11/2007 Darmstadt (13/12/2006) ● presentation of the Action and of the research topics on participating groups ● selection of WG’s attendance Granada, WG2 short meeting (29/03/2007) ● definition of the WG guidelines ● presentation of interest on specific researches ● lectures and posters Liege, WG2 meeting (12/06/2007) ● presentations and discussion on specific research activities of the members ● interests on EU 7thFP themes Meetings

4. ESF COST P21 – WG2 Report 2007, Marne la Vallée 13/11/2007 X. Zabulis, M. Papara, A. Chatziargyriou and T. D. Karapantsios, "Detection of densely dispersed spherical bubbles in digital images based on a template matching technique: application to wet foams", Colloids Surfaces A: Physicochem. Eng. Aspects, in press M. Papara, X. Zabulis, E. P. Kalogianni, T. D. Karapantsios, "Studying the drainage of wet foams by combining electrical, optical and volumetric measurements", International Workshop Bubble and Drop Interfaces, Granada, Spain, March 25-28, 2007. T.D. Karapantsios, M. Papara, “On the Design of Electrical Conductance Probes for Foam Drainage Applications. Assessment of Ring Electrodes Performance and Bubble Size Effects on Measurements”, Colloid & Surfaces A: Physicochem. Eng. Aspects, in press M. Krasowska, M. Kolasinska, P. Warszynski, K. Malysa "Influence of polyelectrolyte layers deposited on mica surface on wetting and bubble attachment", J. Phys. Chem. C, 111 (2007) 5743-5749. M. Krasowska, K. Malysa "Kinetics of Bubble Collision and Attachment to Hydrophobic Solids: I. Effect of Surface Roughness", Intern. J. Mineral Process, 81 (2007) 205-216. M. Krasowska, R. Krastev, M. Rogalski, K. Malysa, "Air facilitated three phase contact formation at hydrophobic solid surfaces under dynamic conditions", Langmuir, 23 (2) (2007) 549-557. M. Krzan, J. Zawala, K. Malysa, "Development of steady state adsorption distribution over interface of the bubble rising in solutions of n-alkanols (C5, C8) and n-alkylthrimethylammonium bromides (C8, C12, C16)", Colloids & Surfaces A:, 298 (2007) 42-51. S. Hutzler, M. Saadatfar, A. van der Net, D. Weaire, S.J. Cox,"The dynamics of a topological change in a system of soap films", Colloids and Surfaces A: Physicochem. Eng. Aspects, 2007, submtted. Publications: 15 in Intl. Journals, Conferences

5. ESF COST P21 – WG2 Report 2007, Marne la Vallée 13/11/2007 T. Gilet, K. Mulleners, JP Lecomte, N. Vandewalle, S. Dorbolo, “Critical parameters for the droplet cascade of coalescence, Physical Review E 75 (2007), 036303 (14 pages) T. Gilet, N. Vandewalle, S. Dorbolo, “Controlling the partial coalescence of a droplet onto a vertically vibrated bath”, Physical Review E, Rapid Communication, 2007,in press S. Caserta, S. Reynaud, M. Simeone and S. Guido. “Drop deformation in sheared polymer blends”. J. Rheol., 2007, 51, 585-774 E. Santini, L. Liggieri, L. Sacca, D. Clausse, F. Ravera, “Interfacial Rheology of Span 80 Adsorbed Layers at Paraffin Oil – Water Interface and Correlation with the Corresponding Emulsion Properties”, Colloid and Surfaces A – Physicochem and Eng. Aspects, 2007, in press E. Santini, F. Ravera, M. Ferrarii, C. Stubenrauch, A. Makievski, J. Kragel, “A surface rheological study of non-ionic surfactants at the water-air interface and the stability of the corresponding thin foam films”, Colloid and Surfaces A – Physicochem and Eng. Aspects, 2007, 298, 12-21i F. Ravera, M. Ferrari, L. Liggieri, G. Loglio, E. Santini, A. Zanobini, “ Liquid-Liquid Interfacial Properties of mixed Nanoparticle-Surfactant systems”, Colloid and Surfaces A – Physicochem. Eng. Aspects, 2007, in press V.B. Fainerman, S.A. Zholob, J.T. Petkov and R. Miller, C14EO8 adsorption characteristics studied by drop and bubble profile tensiometry, Physicochem. Eng. Aspects, 2007, in press Cs. Kotsmár, D.O. Grigoriev, A.V. Makievski, J.K. Ferri, J. Krägel, R. Miller and H. Möhwald, Comparison of the equilibrium and dynamic surface tensions of mixed b-casein/C12DMPO layers as studied by sequential and simultaneous adsorption, Colloids & Surfaces A, 2007, submitted

6. ESF COST P21 – WG2 Report 2007, Marne la Vallée 13/11/2007 ApplicantFromHostPeriodTopic Marta Krasowska Institute of Catalysis & Surface Chemistry Krakow (PL) Michele Ferrari, CNR- Istituto per l’Energetica e le Interfasi, Genova (IT) 20/11/06 -> 08/12/06 Interdependences between wetting and bubble attachment to superhydrophobic surfaces Eleni Kalogianni Aristotle University Thessaloniki (GR) Francesca Ravera, CNR- Istituto per l’Energetica e le Interfasi, Genova (IT) 23/11/06 -> 29/11/06 Dynamic interfacial tension of soybean protein water solution at the sub-second time range Michele Ferrari CNR- Istituto per l’Energetica e le Interfasi, Genova (IT) Omar Bonaccurso, MPI – Polymerforsch. Mainz (DE), 13/12/06 -> 22/12/06 AFM techniques for studying surfactant-particles interactions in liquid environment Jan Zawala,Institute of Catalysis & Surface Chemistry Krakow (PL) Reinhard Miller, MPI Kolloid- Grenzflachenforsh,G olm(DE) 19/11/07 -> 10/12/07 Adsorption kinetics of n-octyl- trimethylammonium and n- dodecyl-trimethylammonium bromides Dimitrinka Arabadzhieva Inst. Physical Chemistry – BAS, Sofia (BG) Libero Liggieri CNR- Istituto per l’Energetica e le Interfasi, Genova (IT) 02/12/07 -> 20/12/07 Dilational viscoelasticity of non ionic surfactants in the presence of electrolytes STSM’s: 5 (on 11 granted by the action)

7. ESF COST P21 – WG2 Report 2007, Marne la Vallée 13/11/2007 Conclusions & Perspectives:  Positive start-up activity  Increase links with other WG’s  Increase utilisation of STSM  Develop and exploit collaborations with other networks/projects: - COST D43: “Colloid and Interface Chemistry for Nanotecnology” (WG 6) - ESA Topical Teams - ESA Research Projects on Emulsions and Foams  Evaluate and build opportunities for applications into EU 7° FP initiatives