Selected publications Robert Ivkov, Paul D. Butler, Sushil K. Satija, and Lewis J. Fetters, Effect of Solvent Flow on a Polymer Brush: A neutron Reflectivity Study of the Brush Height and Chain Density Profile, Langmuir in press J. C. Schulz, G.G. Warr, P. D. Butler, and W. A. Hamilton, Adsorbed Layer Structure of Cationic Surfactants on Quartz, Phys. Rev. E. in press L.J. Magid, Z. Li, P. D. Butler Flexibility of Elongated Sodium Dodecylsulfate Micelles in Aqueous Sodium Chloride: A Small-Angle Neutron Scattering Study, Langmuir 16, 10028 (2000). Gudrun Schmidt, Alan I. Nakatani, Paul D. Butler, Alamgir Karim, Charles C. Han, Shear Orientation of Viscoelastic Polymer-Clay Solutions Probed by Flow Birefringence and SANS, Macromolecules 33, 7219 (2000). L.J. Magid, Z. Han, Z. Li, P. D. Butler "Tuning Microstructure of Cationic Micelles on Multiple Length Scales: The Role of Electrostatics and Specific Ion Binding", Langmuir.16, 149(2000). P. D. Butler "Shear Induced Structures and Transformations in Complex Fluids", Current Opinion in Colloid and Interface Science 4, 214 (1999). W. A. Hamilton, P. D. Butler, L.J. Magid, Z. Han, and T. M. Slawecki "Fast relaxation of a Hexagonal Poiseuille Shear-Induced Near-Surface Phase in a Threadlike Micellar Solution", Phys. Rev. E 60, R1146 (1999) Carmen C Greenburg, Mark D. Foster, C. Michele Turner, Sergio Corona-Galvan, E. Cloutet, Paul D. Butler, Boualem Hammouda, and Roderick P. Quirk "Effective Interaction Parameter Between Topologically Distinct Polymers", Polymers 40, 4713 (1999). Paul D. Butler "Near Surface Small Angle Scattering as a Means of Probing the Effects of Fluid Flow on Surfactant Aggregates Near a Solid Surface", in Supramolecular Structures in Confined Geometries; G. G. Warr and S. Manne, Eds.; ACS Symposium Series 736; American Chemical Society: Washington, D.C., chapter 5, p73 (1999). D. W. Armstrong, J. Schneiderheinze, U. Nair, L. J. Magid, and P. Butler "Self- Association of Rifamycin B: Possible Effects on Molecular Recognition", J. Phys. Chem.B 103(21), 4338-4341 (1999). J. C. Schulz, G.G. Warr, W. A. Hamilton, and P. D. Butler "A New Model For Neutron Reflectometry of Adsorbed Surfactant Aggregates", J. Phys. Chem. B 103, 11057 (1999). P. D. Butler, W. A. Hamilton, L. J. Magid, J. B. Hayter, T. M. Slawecki and B. Hammouda "Use of Complementary Neutron Techniques in Studying the Effects of a Solid/Liquid Interface on Bulk Solution Structures", Faraday Discussion 104, 65 (1997). P. D. Butler, L. J. Magid, W .A. Hamilton, J. B. Hayter, B. Hammouda, and P. J. Kreke "Kinetics of Alignment and Decay in a Highly entangled Transient Threadlike Micellar Network Studied by Small-Angle Neutron Scattering", J. Phys. Chem. 100, 442-445 (1996). W. A. Hamilton, P. D. Butler, S. M. Baker, G. S. Smith, J. B. Hayter, L. J. Magid, and R. Pynn "Shear Induced Hexagonal Ordering Observed in an Ionic Viscoelastic Fluid in Flow Past a Surface", Phys. Rev. Let. 72, 2219 (1994).