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You searched on: Author: jack douglas

Displaying records 161 to 170 of 233 records.
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161. High-Throughput Characterization of Pattern Formation in Symmetric Diblock Copolymer Films
Published: 9/1/2001
Authors: A P Smith, Jack F Douglas, J C Meredith, Eric J. Amis, Alamgir Karim
Abstract: Surface pattern formation in thin block copolymer films is investigated utilizing a high throughput methodology to validate the combinatorial measurement approach and to demonstrate the value of the combinatorial method for scientific investigation. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851825

162. High Throughput Approach to Crystallization in Thin Films of Isotactic Polystyrene
Published: 8/1/2001
Authors: Kathryn L Beers, Jack F Douglas, Eric J. Amis, Alamgir Karim
Abstract: The dependence of the crystallization rate of isotactic polystyrene was measured as a function of film thickness and temperature on films with continuous gradients. The results agreed with literature values obtained on discrete films. This validate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851882

163. Studies of polymer-filler interactions in filled systems
Published: 8/1/2001
Authors: Alamgir Karim, Jack F Douglas, K A Barnes, A Nakatani, D W. Liu, Eric J. Amis
Abstract: We observe that the presence of filler partiocles can have a major impact on the properties of filled polymer blend materials. The filler particles, which are found in many commercial polymer blends, modify the phase boundary (interfacial tension, ra ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851903

164. Combinatoral Study of Surface Pattern Formation in Thin Block Copolymer Films
Published: 7/1/2001
Authors: A P Smith, Jack F Douglas, Alamgir Karim, J C Meredith, Eric J. Amis
Abstract: We investigate surface patterns in thin block copolymer films with a gradient in thickness, h. The usual hole and island morphologies are found when h varies from integral multiples m of the bulk lamellar thickness Lo but spinodal-like hole and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851742

165. 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

166. Influence of Filler Particles and Filler Clusters on Phase Separation in Binary Polymer Blends
Published: 7/1/2001
Authors: Y. L. Jiang, A Saxena, T Lookman, Jack F Douglas
Abstract: Motivated by recent experiments on filled polymer thin films, we study the effect of the presence of filler particles on phase separating mixtures. using a generalized Cahn-Hilliard -Cook model, we show that the preferential wetting of one phase on t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851859

167. Thermodynamic Regulation of Actin Polymerization
Published: 6/1/2001
Authors: P S Niranjan, J G Forbes, S C Greer, J Dudowicz, Karl Freed, Jack F Douglas
Abstract: A Flory-Huggins-type lattice model of actin polymerization under equilibrium conditions is employed to analyze new spectroscopic measurements for the extent of actin polymerization {diameter} as a function of temperature T, salt concentration [KC1], ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851976

168. Characterization of Symmetric Diblock Copolymers With High-Throughput Techniques
Published: 4/1/2001
Authors: Alamgir Karim, A P Smith, Jack F Douglas, Eric J. Amis
Abstract: Surface pattern formation in thin block copolymer films is investigated utilizing a high-throughput methodology by creating films having gradients in film thickness. We observe a succession of surface patterns that repeat cyclically across the film ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851826

169. Critical Properties and Phase Separation in Lattice Boltzmann Fluid Mixtures
Published: 3/1/2001
Authors: Nicos Martys, Jack F Douglas
Abstract: Basic equilibrium properties of Lattice Boltzmann (LB) fluid mixtures (coexistence curve, surface tension, interfacial profile, correlation length) are calculated to characterize the critical phenomena occurring in these model liquids and to establis ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860263

170. Influence of Counterion Valency on the Scattering Properties of Highly Charged Polyelectrolyte Solutions
Published: 2/1/2001
Authors: Y B Zhang, Jack F Douglas, B D Ermi, Eric J. Amis
Abstract: Light and neutron scattering measurements on highly charged polyelectrolyte solutions have recently provided firm evidence for the existence of domain structures containing many chains, even at rather low polymer concentrations. In the present paper, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851758



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