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New Investigations of Liquid Marbles

This research explores the physical properties and potential applications of liquid marbles, non-stick droplets coated with macro- or nano-scaled powder. Topics covered include surface tension, actuation, composite marbles, and Janus marbles.

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New Investigations of Liquid Marbles

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  1. New Investigations of Liquid Marbles Ed. Bormashenko, The Ariel University, Ariel, Israel Харьковский национальный университет имени В. Н. Каразина, Октябрь, 2013

  2. What is a Liquid Marble? A liquid Marbles Are Non-Stick Droplets Coated with Macro- or Nano-Scaled Powder P. Aussillous, D. Quéré, Nature, 411 (2001) 924-927

  3. Deformation of water marbles by gravity V=10 μl V=50 μl

  4. Hydrophobic particles liquid Solid substrate Marbles Sit on Air!

  5. E. Bormashenko, Ye. Bormashenko, A. Musin, Z. Barkay, ChemPhysChem 2009, 10, 654

  6. E. Bormashenko, Ye. Bormashenko, A. Musin, Z. Barkay, ChemPhysChem 2009, 10, 654

  7. Floating Marbles Journal of Colloid and Interface Science, 333, 2009, 419. Ed. Bormashenko, Ye. Bormashenko, Al. Musin

  8. Revealing Water Surface Pollution with Liquid Marbles E. Bormashenko, A. Musin Applied Surface Science, 255, 12, 2009, 6429-6431

  9. Superhydrophobic Behavior of Liquid Marbles

  10. Motivation • Liquid marbles – an alternative approach to manufacturing non-stick surfaces • Study of physical properties of liquid marbles • Study of the possibility of remote actuation of liquid marbles

  11. Materials: • Polyvinylidene fluoride (PVDF) • Polytetrafluoroethylene (PTFE) • Polyethylene (PE) • Lycopodium • Carbon black (hydrophilic!)

  12. Lycopodium Particles

  13. ESEM Image of the Marble Surface (Coated with Lycopodium)

  14. ESEM Image of Marble Surface (Coated with PVDF) Ed. Bormashenko, R. Pogreb, G. Whyman, Al. Musin, Ye. Bormashenko, Z. Barkay, Langmuir, 2009, 25 , 1893–1896

  15. Hydrophilic particles Air pockets 15 mm Liquid Marble Coated With Carbon Black ρ ~170 Ω∙m 15 mm

  16. Properties of Liquid Marbles • What is the effective surface tension of liquid marbles? • Aussillous and D. Quéré Proceedings Royal Soc. A, 2006, 462, 973. • G. McHale, S. J. Elliott, M. I. Newton, D. L. Herbertson, K. Esmer, Langmuir, 2009, 25, 529. • T. Arbatan, W. Shen Langmuir, 2011, 27, 12923 • C. Planchette, E. Lorenceau, A.-L. Biance, Soft Matter, 2012, 8, 2444.

  17. Surface Tension of Marbles Established with Vibrations R θ-δθ θ+δθ θ Ed. Bormashenko, R. Pogreb, G. Whyman, Al. Musin, Ye. Bormashenko, Z., Langmuir, 2009, 25 (4), 1893–1896.

  18. Values of surface tension measured with different methods. Marbles γ, mJ/m2

  19. Effective Surface Tension of Marbles A B Pendant marbles: (A) lycopodium and (B) carbon black

  20. Establishment of the effective surface tension with the pendant marble method E. Bormashenko, Al. Musin, G. Whyman, Z. Barkay, A. Starostin, V. Valtsifer, Vl. Strelnikov Colloids and Surfaces A: 425 (2013) 15-23

  21. Dependence of the effective surface tension on the volume during inflation (open circles) and evaporation (solid circles) for the lycopodium coated marbles.

  22. Dependence of the effective surface tension on the volume during inflation (open circles) and evaporation (solid circles) for the PVDF coated marbles.

  23. Surface Tension of Liquid Marbles is of a Pronounced Hysteretic Nature E. Bormashenko, Al. Musin, G. Whyman, Z. Barkay, A. Starostin, V. Valtsifer, Vl. Strelnikov Colloids and Surfaces A: 425 (2013) 15-23

  24. Actuation of Liquid Marbles

  25. magnetic powder PVDF Ferrofluidic Marbles V=25 cm/s Ed. Bormashenko, R. Pogreb, Ye. Bormashenko, Al. Musin, T. Stein, Langmuir, 2008, 24 , 12119–12122

  26. Ferrofluidic marble g magnet superhydrophobic surface Ferrofluidics with Liquid Marbles Ed. Bormashenko, R. Pogreb, Ye. Bormashenko, Al. Musin, T. Stein, Langmuir, 2008, 24 , 12119–12122

  27. Jetting Liquid Marbles (Taylor Instability)water marbles immersed in PDMSColloid Polymer Sci. (2013) 291:1535–1539 T=1.63-1.65

  28. Squared critical electric field versus inverse radius, of the spherical marble of an equivalent volume. Different slopes resemble different surface energies at the marble/oil interfaces.

  29. Micro-Pump Based on Liquid Marbles Bormashenko, E. et al, Applied Physics Letters, 97 (2010) 091908

  30. Parameters of the Micro-Pump

  31. Marbles Swallowing One Another

  32. Composite Liquid Marbles and Their Actuation

  33. PTFE (white) and carbon black coated (black) 20 µl liquid marbles

  34. Preparing Janus Marbles vibration Ed Bormashenko, Ye. Bormashenko, R. Pogreb, O. Gendelman, Janus Droplets: Liquid Marbles Coated with Dielectric/Semiconductor Particles Langmuir 2011, 27(1), 7–10

  35. Composite 40 µl Janus liquid marble

  36. Watermelon-like marble obtained by merging of two Janus marbles

  37. The sequence of images demonstrating the rotation of the Janus marble by the growing electric field Ed Bormashenko, Ye. Bormashenko, R. Pogreb, O. Gendelman, Janus Droplets: Liquid Marbles Coated with Dielectric/Semiconductor Particles Langmuir 2011, 27(1), 7–10

  38. The sequence of images illustrating the behavior of composed marble exposed to electric field. A. Initial state, the composite marble built of the water (red) andCH2I2 (white) of the same volume of 10 µl. B. Water marble climbed on the MI one. A B

  39. 10 µl MI (white) and 10 µl water (red) marbles exposed to the electric field. The initial state E=0, B. The marbles exposed to E=7 ×105V/mC. 10 µl MI (white) and 40 µl water (red) marbles exposed to the electric field. The initial state E=0, D. The marbles exposed to E=7 ×105V/m

  40. Sensitivity of water and diiodomethane(CH2I2) marbles to electric field

  41. Sensitivity of water and diiodomethane(CH2I2) marbles to electric field same radii

  42. powder Manufacturing “sandwich marbles” containing solid particles foamed PS ball liquid

  43. Sandwich water marbles containing spherical particle of foamed PS

  44. Manufacturing “sandwich marbles” FD-POSS powder DMSO Liquids: Hexadecane or Toluene

  45. Sandwich Marbles: Hexadecane Marble Comprising DMSO (Red)

  46. Micro-Reactors Based on Marbles The shell enwrapping the marble is permeable for gases Marbles containing a solution of ammonia acetate, acetic acid and acetylacetone exposed to the formaldehyde vapor Bormashenko E, et al International Journal of Chemical Reactor Engineering, 9 (2011) S10.

  47. Pickering-like emulsions obtained via liquid marbles (water marbles immersed in PDMS) Bormashenko E., Pogreb R., Musin Al., Stable water and glycerol marbles immersed in organic liquids: From liquid marbles to Pickering-like emulsions, Journal of Colloid and Interface Science 366 (2012) 196–199.

  48. Lycopodium-coated shaped marbles

  49. Conclusions Liquid marbles are non-stick droplets coated with hydrophobic or hydrophilic powder Marbles are separated from a substrate by air pockets Janus and composite marbles could be manufactured

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