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Drag reduction using superhydrophobic sanded Teflon surfaces

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Abstract

In this paper, a series of experiments are presented which demonstrate drag reduction for the laminar flow of water through microchannels using superhydrophobic surfaces with random surface microstructure. These superhydrophobic surfaces were fabricated with a simple, inexpensive technique of sanding polytetrafluoroethylene (PTFE) with sandpaper having grit sizes between 120- and 600-grit. A microfluidic device was used to measure the pressure drop as a function of the flow rate to determine the drag reduction and slip length of each surface. A maximum pressure drop reduction of 27 % and a maximum apparent slip length of b = 20 μm were obtained for the superhydrophobic surfaces created by sanding PTFE with a 240-grit sandpaper. The pressure drop reduction and slip length were found to increase with increasing mean particle size of the sandpaper up to 240-grit. Beyond that grit size, increasing the pitch of the surface roughness was found to cause the interface to transition from the Cassie–Baxter state to the Wenzel state. This transition was observed both as an increase in the contact angle hysteresis and simultaneously as a reduction in the pressure drop reduction. For these randomly rough surfaces, a correlation between the slip length and the contact angle hysteresis was found. The surfaces with the smallest contact angle hysteresis were found to also have the largest slip length. Finally, a number of sanding protocols were tested by sanding preferentially along the flow direction, across the flow direction and with a random circular pattern. In all cases, sanding in the flow direction was found to produce the largest pressure drop reduction.

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References

  • Barthlott W, Neinhuis C (1997) Purity of the sacred lotus, or escape from contamination in biological surfaces. Planta 202:1–8

    Article  Google Scholar 

  • Bocquet L, Barrat J-L (2007) Flow boundary conditions from nano- to micro-scales. Soft Matter 3:685–693

    Article  Google Scholar 

  • Bocquet L, Lauga E (2013) A smooth future? Nat Mater 10:334–337

    Google Scholar 

  • Cassie ABD, Baxter S (1944) Wettability of porous surfaces. Trans Faraday Soc 40:0546–0550

    Article  Google Scholar 

  • Choi C-H, Ulmanella U, Kim J, Ho C-M, Kim C-J (2006) Effective slip and friction reduction in nanograted superhydrophobic microchannels. Phys Fluids 18:087105

    Article  Google Scholar 

  • Feuillebois F, Bazant MZ, Vinogradova OI (2009) Effective slip over superhydrophobic surfaces in thin channels. Phys Rev Lett 102:026001

    Article  Google Scholar 

  • Gogte S, Vorobieff P, Truesdell R, Mammoli A, van Swol F, Shah P, Brinker CJ (2005) Effective slip on textured superhydrophobic surfaces. Phys Fluids 17:051701

    Article  Google Scholar 

  • Hammer MU, Anderson TH, Chaimovich A, Shell MS, Israelachvili J (2010) The search for the hydrophobic force law. Faraday Discuss 146:299–308

    Article  Google Scholar 

  • Harting J, Kunert C, Hyvaluoma J (2010) Lattice Boltzmann simulations in microfluidics: probing the no-slip boundary condition in hydrophobic, rough, and surface nanobubble laden microchannels. Microfluid Nanofluid 8:1–10

    Article  Google Scholar 

  • Hebets EA, Chapman RF (2000) Surviving the flood: plastron respiration in the non-tracheate arthropod Phrynus marginemaculatus (amblypygi: Arachnida). J Insect Physiol 46:13–19

    Article  Google Scholar 

  • Hu DL, Chan B, Bush JWM (2003) The hydrodynamics of water strider locomotion. Nature 424:663–666

    Article  Google Scholar 

  • Jin MH, Feng XJ, Feng L, Sun TL, Zhai J, Li TJ, Jiang L (2005) Superhydrophobic aligned polystyrene nanotube films with high adhesive force. Adv Mater 17:1977

    Article  Google Scholar 

  • Lau KKS, Bico J, Teo KBK, Chhowalla M, Amaratunga GAJ, Milne WI, McKinley GH, Gleason KK (2003) Superhydrophobic carbon nanotube forests. Nano Lett 3:1701–1705

    Article  Google Scholar 

  • Lauga E, Stone HA (2003) Effective slip in pressure-driven stokes flow. J Fluid Mech 489:55–77

    Article  MATH  MathSciNet  Google Scholar 

  • Lee C, Kim C-J (2009) Maximizing the giant liquid slip on superhydrophobic microstructures by nanostructuring their sidewalls. Langmuir 25:12812–12818

    Article  Google Scholar 

  • Lee JS, Ryu J, Park CB (2009) Bio-inspired fabrication of superhydrophobic surfaces through peptide self-assembly. Soft Matter 5:2717–2720

    Article  Google Scholar 

  • Li XH, Chen GM, Ma YM, Feng L, Zhao HZ, Jiang L, Wang FS (2006) Preparation of a super-hydrophobic poly(vinyl chloride) surface via solvent–nonsolvent coating. Polymer 47:506–509

    Article  Google Scholar 

  • Liu H, Feng L, Zhai J, Jiang L, Zhu DB (2004) Reversible wettability of a chemical vapor deposition prepared zno film between superhydrophobicity and superhydrophilicity. Langmuir 20:5659–5661

    Article  Google Scholar 

  • McHale G, Shirtcliffe NJ, Evans CR, Newton MI (2009) Terminal velocity and drag reduction measurements on superhydrophobic spheres. Appl Phys Lett 94:064104

    Article  Google Scholar 

  • Navier CLMH (1823) Memoire sur les lois du mouvement des fluides. Memoires de l'Academie Royal des Sciences de I'Institut de France 6:389–440

  • Nilsson M, Rothstein JP (2011) The effect of contact angle hysteresis on droplet coalescence and mixing. J Colloid Interface Sci 363:646–654

    Article  Google Scholar 

  • Nilsson M, Rothstein JP (2012) Using sharp transition in contact angle hysteresis to move and deflect droplets on a superhydrophobic surface. Phys Fluids 24:062001

    Article  Google Scholar 

  • Nilsson MA, Daniello RJ, Rothstein JP (2010) A novel and inexpensive technique for creating superhydrophobic surfaces using Teflon and sandpaper. J Phys D Appl Phys 43:045301

    Article  Google Scholar 

  • Nørgaard T, Dacke M (2010) Fog-basking behaviour and water collection efficiency in Namib Desert Darkling beetles. Front Zool 7:23

    Article  Google Scholar 

  • Oner D, McCarthy TJ (2000) Ultrahydrophobic surfaces: effects of topography length scales on wettability. Langmuir 16:7777–7782

    Article  Google Scholar 

  • Ou J, Rothstein JP (2005) Direct velocity measurements of the flow past drag-reducing ultrahydrophobic surfaces. Phys Fluids 17:103606

    Article  Google Scholar 

  • Ou J, Perot JB, Rothstein JP (2004) Laminar drag reduction in microchannels using ultrahydrophobic surfaces. Phys Fluids 16:4635–4660

    Article  Google Scholar 

  • Ou J, Moss GR, Rothstein JP (2007) Enhanced mixing in laminar flows using ultrahydrophobic surfaces. Phys Rev E 76:016304

    Article  Google Scholar 

  • Pietsch T, Gindy N, Fahmi A (2009) Nano- and micro-sized honeycomb patterns through hierarchical self-assembly of metal-loaded diblock copolymer vesicles. Soft Matter 5:2188–2197

    Article  Google Scholar 

  • Quere D (2008) Wetting and roughness. Annu Rev Mater Res 38:71–99

    Article  Google Scholar 

  • Reyssat M, Pepin A, Marty F, Chen Y, Quere D (2006) Bouncing transitions on microtextured materials. Europhys Lett 74:306–312

    Article  Google Scholar 

  • Richard D, Quere D (2000) Bouncing water drops. Europhys Lett 50:769–775

    Article  Google Scholar 

  • Rothstein JP (2010) Slip on superhydrophobic surfaces. Annu Rev Fluid Mech 42:89–109

    Article  Google Scholar 

  • Sbragaglia M, Prosperetti A (2007) Effective velocity boundary condition at a mixed slip surface. J Fluid Mech 578:435–451

    Article  MATH  MathSciNet  Google Scholar 

  • Shirtcliffe NJ, McHale G, Newton MI, Perry CC, Pyatt FB (2006a) Plastron properties of a superhydrophobic surface. Appl Phys Lett 89:104106

    Article  Google Scholar 

  • Shirtcliffe NJ, Pyatt FB, Newton MI, McHale G (2006b) A lichen protected by a super-hydrophobic and breathable structure. J Plant Physiol 163:1193–1197

    Article  Google Scholar 

  • Singh A, Steely L, Allcock HR (2005) Poly[bis(2,2,2-trifluoroethoxy)phosphazene] superhydrophobic nanofibers. Langmuir 21:11604–11607

    Article  Google Scholar 

  • Srinivasan S, Choi W, Park K-C, Chhatre SS, Cohen RE, McKinley GH (2013) Drag reduction for viscous laminar flow on spray-coated non-wetting surfaces. Soft Matter 9:5691–5702

    Article  Google Scholar 

  • Tretheway DC, Meinhart CD (2002) Apparent fluid slip at hydrophobic microchannel walls. Phys Fluids 14:L9–L12

    Article  Google Scholar 

  • Tretheway DC, Meinhart CD (2004) A generating mechanism for apparent fluid slip in hydrophobic microchannels. Phys Fluids 16:1509–1515

    Article  Google Scholar 

  • Truesdell R, Mammoli A, Vorobieff P, van Swol P, Brinker CJ (2006) Drag reduction on a patterened superhydrophobic surface. Phys Rev Lett 97:044504

    Article  Google Scholar 

  • Voronov RS, Papavassiliou DV, Lee LL (2008) Review of fluid slip over superhydrophobic surfaces and its dependence on the contact angle. Ind Eng Chem Res 47:2455–2477

    Article  Google Scholar 

  • White FM (1991) Viscous fluid flow. McGraw-Hill, New York

    Google Scholar 

  • Xu W, Choi C-H (2012) From sticky to slippery droplets: dynamics of contact line depinning on superhydrophobic surfaces. Phys Rev Lett 109:024504

    Article  Google Scholar 

  • Yamanaka M, Sada K, Miyata M, Hanabusa K, Nakano K (2006) Construction of superhydrophobic surfaces by fibrous aggregation of perfluoroalkyl chain-containing organogelators. Chem Commun (21):2248–2250

  • Yao LJ, Zheng MJ, He SG, Ma L, Li M, Shen WZ (2011) Preparation and properties of Zns superhydrophobic surface with hierarchical structure. Appl Surf Sci 257:2955–2959

    Google Scholar 

  • Ybert C, Barentin C, Cottin-Bizonne C, Joseph P, Bocquet L (2007) Achieving large slip with superhydrophobic surfaces: scaling laws for generic geometries. Phys Fluids 19:123601

    Article  Google Scholar 

  • Zheng Y, Gao X, Jiang L (2007) Directional adhesion of superhydrophobic butterfly wings. Soft Matter 3:178–182

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. School of Marine Engineering, Northwestern Polytechnical University, 127 Youyi Xilu, Xi’an, 710072, Shaanxi, People’s Republic of China

    Dong Song

  2. Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, 160 Governors Drive, Amherst, MA, 01003-2210, USA

    Dong Song, Robert J. Daniello & Jonathan P. Rothstein

Authors
  1. Dong Song
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  2. Robert J. Daniello
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  3. Jonathan P. Rothstein
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Correspondence to Jonathan P. Rothstein.

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Song, D., Daniello, R.J. & Rothstein, J.P. Drag reduction using superhydrophobic sanded Teflon surfaces. Exp Fluids 55, 1783 (2014). https://doi.org/10.1007/s00348-014-1783-8

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  • DOI: https://doi.org/10.1007/s00348-014-1783-8

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