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

Displaying records 11 to 20 of 234 records.
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11. Breakup of a Fluid Thread in a Confined Geometry: Droplet-Plug Transition, Perturbation Sensitivity and Kinetic Stabilization with Confinement
Published: 1/1/2004
Authors: John G Hagedorn, Nicos Martys, Jack F Douglas

12. Bridging the Gap Between Structure and Properties in Nano-Particle Filled Polymers
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6893
Published: 7/1/2002
Authors: Erik K. Hobbie, Francis W. ~undefined~undefined~undefined~undefined~undefined Starr, Jack F Douglas, Charles C. Dr. Han
Abstract: On May 29-30, 2002, a workshop on polymer nanocomposites was held at NIST in Gaithersburg, Maryland. The workshop was entitled Bridging the Gap Between Structure and Properties in Nanoparticle-Filled Polymers and focused primarily on the interrelati ...

13. Capillary Instability in Nanoimprinted Polymer Films
Published: 5/21/2009
Authors: Kyle J. Alvine, Yifu Ding, Hyun Wook Ro, Brian C. Okerberg, Alamgir Karim, Christopher L Soles, Jack F Douglas
Abstract: Capillary forces play an active role in defining the equilibrium structure of nanoscale structures. This effect can be especially pronounced in soft materials such as polymers near or above their glass transition temperatures where material flow is ...

14. Characterization of Atomic Motions Governing Grain Boundary Migration
Published: 9/24/2006
Authors: Hao Zhang, David J Srolovitz, Jack F Douglas, James A Warren
Abstract: Molecular dynamics simulations were employed to study atomic motion within stationary and migrating asymmetric tilt grain boundaries. We employ several measures of the complexity of the atomic trajectories, including the van Hove correlation funct ...

15. 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 ...

16. Characterization of the Potential Energy Landscape in an Antiplasticized Polymer
Published: 7/6/2007
Authors: Robert A Riggleman, Jack F Douglas, J J de Pablo
Abstract: Transition state searches have been performed on model coarse-grained polymer systems, and the results compared to those of an antiplasticized polymer system, which have been previously shown to be fragile and strong glass-forming systems, respective ...

17. Colliding Self-Assembly Waves in Organosilane Monolayers
Published: Date unknown
Authors: K Efimenko, Ali Ozcam, Jan Genzer, Daniel A Fischer, Frederick R Phelan Jr., Jack F Douglas
Abstract: Colliding autocatalytic wave-fronts of organosilane (OS) layer self-assembly are generated through the controlled positioning of sources of the volatile OS material at the edges of a silica wafer and through adjustment of the container dimensions in ...

18. 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 ...

19. Combinatorial Mapping of Surface Energy Effects on Diblock Copolymer Thin Film Ordering
Published: 1/1/2003
Authors: A P Smith, A Sehgal, Jack F Douglas, Alamgir Karim, Eric J. Amis
Abstract: Combinatorial gradient techniques are used to map the thin film morphology dependence of symmetric diblock copolymers as a function of film thickness and substrate surface energy. An inversion from symmetric to asymmetric lamellar morphology is obse ...

20. Combinatorial Measurements of Crystallization Growth Rate and Morphology in Thin Films of Isotactic Polystyrene
Published: 4/1/2003
Authors: Kathryn L Beers, Jack F Douglas, Eric J. Amis, Alamgir Karim
Abstract: Combinatorial methods are utilized to study the influence of film thickness, h, and crystallization temperature, T, on the crystallization of isotactic polystyrene. Films with continuous gradients in film thickness were prepared by flow coating and ...

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