Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).

View the beta site
NIST logo

Publications Portal

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

Displaying records 191 to 200 of 234 records.
Resort by: Date / Title

191. Shift in Polymer Blend Phase-Separation Temperature in Shear Flow
Published: 5/1/2002
Author: Jack F Douglas
Abstract: Recent experimentalstudiesof polymer blendsin simple shear flow have indicated large *Shih of the apparent phase-separation temperature. These shifts are examined within the context of a nonequilibrium hydrodynamic theory of phase separation develop ...

192. Solvent Retention In Thin Spin-Coated Polystyrene And Poly(Methyl Methacrylate) Homopolymer Films Studied By Neutron Reflectometry
Published: 1/19/2010
Authors: Xiaohua Zhang, Kevin G. Yager, Shuhui Kang, Nathaniel J Fredin, Bulent Akgun, Sushil K Satija, Jack F Douglas, Alamgir Karim, Ronald Leland Jones
Abstract: We utilize neutron reflectometry (NR) to probe the amount of residual solvent inside thin polystyrene (PS) and poly(methyl methacrylate) (PMMA) films spin-coated from deuterated toluene polymer solutions onto silicon substrates . The effect of therma ...

193. Spinodal Dewetting of Thin Polymer Films
Published: 8/1/1998
Authors: R H Xie, Alamgir Karim, Jack F Douglas, Charles C. Dr. Han, Robert A Weiss
Abstract: Dewetting of polystyrene (PS) films on a silicon substrate is investigated as a function of film thickness, h. We observe the nucleation of holes in the early stage of dewetting for relatively thick films (h > 100 {Angstrom}), as observed previously, ...

194. Spinodal Dewetting on Chemically Patterned Substrates
Published: Date unknown
Authors: A Sehgal, V Ferreiro, Jack F Douglas, Eric J. Amis, Alamgir Karim
Abstract: We utilize chemically patterned substrates with arrays of progressively narrower stripes (1-15 mm) to investigate the influence of pattern size on the morphology of dewetting polystyrene films. The early-stage dewetting patterns align with the substr ...

195. Structural Signatures of Varification in Hard Core Fluids
Published: 9/1/2003
Authors: S K Kumar, Jack F Douglas, Francis W. ~undefined~undefined~undefined~undefined~undefined Starr, S Garde
Abstract: We investigate the capacities of local measures of free volume in liquids to predict basic aspects of the fluids state- the formation of a liquid from a gas, complex 'caged' fluid dynamics and vitrification. Specifically, we investigate the capacity ...

196. Structural and Dynamic Heterogeneity in a Telechelic Polymer Solution
Published: 5/1/2004
Authors: D Bedrov, G D Smith, Jack F Douglas
Abstract: We utilize molecular dynamics simulations to investigate the implications of micelle formation on structural relaxation and polymer bead displacement dynamics in a model telechelic polymer solution. The transient structural heterogeneity associated w ...

197. Structured Polymeric Templates: Combinatorial Probes for Cellular Response
Published: 1/1/2001
Authors: A Sehgal, Jack F Douglas, Francis W Wang, Carl George Simon Jr., Alamgir Karim, Eric J. Amis
Abstract: Novel high-throughput gradient methods have been developed to generate a range of surface structures by dewetting and phase separation on chemically patterned substrates. The research is motivated by an increasing awareness in the biomedical industry ...

198. 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 ...

199. Suppression of Dewetting in Nanoparticle-Filled Polymer Films
Published: 1/1/2000
Authors: K A Barnes, Alamgir Karim, Jack F Douglas, A Nakatani, H Gruell, Eric J. Amis

200. Suppression of Phase Separation Pattern Formation in Blend Films With Block Copolymer Compatibilizer
Published: 7/1/2003
Authors: Li Piin Sung, Jack F Douglas, Charles C. Dr. Han, Alamgir Karim
Abstract: We show that the addition of a small concentration of a block copolymer surfactant to a thin phase separating blend film can suppress the pattern formation that occurs in the blend films without block copolymer. This effect is observed even at very ...

Search NIST-wide:

(Search abstract and keywords)

Last Name:
First Name:

Special Publications:

Looking for a NIST Special Publication (NIST SP Series)? Place the series number and dash in the report number field (Example: 800-) and begin your search.

  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series