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City Providence / Austin / New York / / Company Oxford Univ Press / Sigma Aldrich / Corning / / / Facility Brown University / University of Texas / / IndustryTerm dilute polymer solution / polymer solution / high-molecular weight silicone oil / wet granular media / high molecular weight silicone oil / nonviscoelastic solutions / viscoelastic media / increased computing time / polymeric solutions / singular solutions / silicone oil / viscoelastic solution / viscous solution / polymer solutions / polymer network / dilute solution / thin zinc-galvanized steel wire / / MedicalCondition DF / stroke / Lyme disease / prescribed stroke / / Organization School of Engineering / University of Texas at Austin / National Science Foundation / Brown University / MIT / steady-state force / / Person Thomas R. Powersa / Prog Phys / Roman Stocker / Gareth McKinley / Harry L. Swinney / Bin Liua / Kenneth S. Breuera / Brit J Appl Phys / Hepeng Zhang / Eric Keaveny / / Position Author / free swimmer / large-amplitude finite-length swimmer / model helical swimmer / large-amplitude swimmer / model bacterial swimmer / swimmer / / Product DV / / ProgrammingLanguage L / / ProvinceOrState Texas / Rhode Island / New York / / RadioStation Leshansky AM / / SportsEvent EPL 91 / / TVStation CBET / / Technology simulation / Microfluidics / / URL www.pnas.org/cgi/doi/10.1073/pnas.1113082108 / / SocialTag 
Force-free swimming of a model helical flagellum in viscoelastic fluids Bin Liua,1, Thomas R. Powersa,b, and Kenneth S. Breuera a School of Engineering, Box D, Brown University, Providence, RI 02912; and bDepartment of