NIST logo

Publications Portal

You searched on: Author: jack douglas

Displaying records 41 to 50 of 225 records.
Resort by: Date / Title


41. Tuning Polymer Melt Fragility With Antiplasticizer Additives
Published: 6/19/2007
Authors: Robert A Riggleman, Jack F Douglas, J J de Pablo
Abstract: A polymer-diluent model exhibiting antiplasticization has beendeveloped and characterized by molecular dynamics simulations. Antiplasticizer molecules are shown to decrease the glass transition temperature Tg, but to increase the elastic moduli o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852717

42. Relationship between dispersion metric and properties of PMMA/SWNT nanocomposites
Published: 6/13/2007
Authors: Takashi Kashiwagi, Jeffrey A Fagan, Jack F Douglas, Kazuya Yamamoto, Nathanael A Heckert, Stefan D Leigh, Jan Obrzut, Fangming Du, Minfang Mu, Sheng Lin-Gibson, K Winey, R Haggenmueller
Abstract: Particle spatial dispersion is a crucial characteristic of polymer composite materials and this property is recognized as especially important innanocomposite materials due to the general tendency of nanoparticles to aggregate under processing condit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854038

43. Polymer Viscoelasticity and Residual Stress Effects on Nanoimprint Lithography
Published: 5/24/2007
Authors: Yifu Ding, Hyun Wook Ro, Jack F Douglas, Ronald Leland Jones, Daniel R. Hines, Alamgir Karim, Christopher L Soles
Abstract: We examine the influence of viscoelastic effects on the stability of nanoimprinted polymer films. The decay of features for polymers below the critical entanglement molecular mass at elevated temperatures is determined by simple surface tension and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852665

44. 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

45. Self-Assembly of Patchy Particles Into Polymer Chains: A Parameter-Free Comparison Between Wertheim Theory and Monte Carlo Simulation
Published: 5/17/2007
Authors: F Sciortino, Emanuela Bianchi, Jack F Douglas, Piero Tartaglia
Abstract: We numerically study a simple fluid composed of particles having a hard-core repulsion, complemented by two short-ranged attractive (sticky) spots at the particle poles, which provides a simple model for equilibrium polymerization of linear chains. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852718

46. Using Pattern Homogenization of Binary Masks to Fabricate Microfluidic Structures With 3D Topography
Published: 5/2/2007
Authors: Francisco Javier Atencia, Susan E. Barnes, Jack F Douglas, John Meacham, Laurie E Locascio
Abstract: Because fluids at the microscale form three dimensional interfaces and are subject to three dimensional forces, the ability to create microstructures with modulated topography over large areas could greatly improve control over microfluidic phenomena ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830553

47. Crystallization of Polyethylene Oxide Patterend by Nanoimprint Lithography
Published: 3/28/2007
Authors: Brian C. Okerberg, Christopher L Soles, Jack F Douglas, Hyun Wook Ro, Alamgir Karim
Abstract: The crystallization behavior of poly(ethylene oxide) (PEO) films patterned by nanoimprint lithography is studied. The imprinted PEO film consists of parallel lines, approximately 240 nm wide and 320 nm tall, on a 400 nm pitch with a residual laye ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852701

48. Numerical Path-Integration Technique for the Calculation of Transport Properties
Published: 3/13/2007
Authors: E Kang, M Mansfield, Jack F Douglas
Abstract: We present a new technique for the computation of both the translational diffusivity and the intrinsic viscosity of macromolecules, and apply it here to approximately 1000 different protein structures. The computed translational diffusivities and i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852177

49. The Effect of Nanoparticle Shape on Polymer-Nanocomposite Rheology and Tensile Strength
Published: 2/23/2007
Authors: Scott Knauert, Jack F Douglas, Francis W. ~undefined~undefined~undefined~undefined~undefined Starr
Abstract: Nanoparticles can influence the properties of polymer materials by a variety of mechanisms. The molecular dynamics simulations in the present work focus on the case where the modification of the melt structure by glass-formation and entanglement inte ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852679

50. Crystallization-Induced Fluid Flow in Polymer Melts Undergoing Solidification
Published: 2/19/2007
Authors: Donghua Xu, Z G Wang, Jack F Douglas
Abstract: The formation of semi-crystalline plastic polymer materials often occurs under confinement conditions where high pressure imprinting or casting in a mold are involved. To gain insight into this highly non-equilibrium process, we examine the nature ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852674



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