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You searched on: Author: jack douglas Sorted by: title

Displaying records 21 to 30 of 234 records.
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21. Combinatorial Study of Surface Pattern Formation in Thin Block Copolymer Films
Published: 7/1/2001
Authors: A P Smith, Jack F Douglas, J C Meredith, Eric J. Amis, Alamgir Karim
Abstract: Surface pattern formation in thin diblock copolymer films is investigated utilizing a high-throughput methodology to validate the combinatorial measurement approach for polymer science. Measurement libraries of block copolymer films having gradients ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851842

22. Comparative Specular X-Ray Reflectivity, Positron Annihilation Lifetime Spectroscopy, and Incoherent Neutron Scattering Measurements of the Dynamics in Thin Polycarbonate Films
Published: 4/1/2004
Authors: Christopher L Soles, Jack F Douglas, Wen-Li Wu, H G Peng, D W Gidley
Abstract: The manner in which the dynamics of a polymer are affected by thin film confinement is one of technological significance, impacting thin film applications such as lubricants, adhesives, and chemically amplified photoresists. In this manuscript we us ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852096

23. Comparison of Methods for Calculating the Friction Coefficient and Intrinsic Viscosity of Nanoparticles and Macromolecules
Published: Date unknown
Authors: M Mansfield, Jack F Douglas, Saba Irfan, E Kang
Abstract: Various methods have been proposed to estimate the translational friction coefficient f and the intrinsic viscosity [?] of polymers and other particles of complex shape. These methods range from first-principles calculations based on a precise desc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852612

24. Competition Between Self-Assembly and Surface Adsorption
Published: 2/25/2009
Authors: Jacek Dudowicz, Jack F Douglas, Karl Freed
Abstract: We investigate a minimal equilibrium polymerization model of the general competition between self-assembly on a boundary and in solution that arises when an assembling system is near a boundary. Adsorption generally occurs upon cooling, but assembly ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854465

25. Computer Simulations of Ionomer Self-Assembly and Dynamics
Published: 5/17/2007
Authors: Moonjoy Goswami, S K Kumar, Aniket Bhattacharya, Jack F Douglas
Abstract: Computer simulations of a model telechelic ionomer, i.e. a melt with a charge at each chain end along with neutralizing counterions, indicate a form of self-assembly that is hybrid between the packing driven interactions in block copolymers and the d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852673

26. Confronting the Complexity of Commercial Carbon Nanotube Materials
Published: 5/13/2015
Authors: Luis Fernando Vargas Lara, Jack F Douglas
Abstract: The morphology of commercially available carbon nanotube materials is often much more complex than the term ,carbon nanotubeŠ (CNT) would imply. Commercial CNT materials are typically composed of roughly spherical CNT domains having a highly rami ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916178

27. Coping With Complex Surfaces: An Interface Between Mathematics and Condensed Matter Physics
Published: Date unknown
Author: Jack F Douglas
Abstract: A transcript of a talk on the application of mathematics to materials science is presented. The talk considers the application of random walk methods to solving boundary value problems with complex boundaries, as found in applications to polymer and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851513

28. Counter-ion distribution around flexible polyelectrolytes having different molecular architecture
Published: 1/30/2016
Authors: Alexandros Chremos, Jack F Douglas
Abstract: We explore the coupling between configurational shape of flexible highly-charged polyelectrolytes of variable topology (linear chain, star, unknotted and trefoil ring) and the counter-ion distribution by molecular dy-namics simulations th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918922

29. Coupling Between Phase Separation and Surface Deformation Modes in Self-Organizing Polymer Blend Films
Published: Date unknown
Authors: B D Ermi, G Nisato, Jack F Douglas, J Rogers, Alamgir Karim
Abstract: Phase separation of ultrathin polymer blend films spun cast onto patterned self-assembled monolayers is examined by atomic force microscopy. Fourier transform analysis of the time evolution of the film topography reveals a coupling between the phase ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851478

30. Coupling of isotropic and directional interactions and its effect on phase separation and self-assembly
Published: 2/16/2016
Authors: Debra Jean Audus, Francis W Starr, Jack F Douglas
Abstract: The interactions of molecules and particles in solution often involve an interplay between isotropic and highly directional interactions that lead to a mutual coupling of phase separation and self-assembly. This situation arises, for example, in prot ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919595



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