NIST logo

Publications Portal

You searched on:
Author: jack douglas

Displaying records 11 to 20 of 224 records.
Resort by: Date / Title


11. Relaxation and antiplasticization measurements in trehalose-glycerol mixtures; a model formulation for protein preservation
Published: 1/28/2010
Authors: Jan Obrzut, A Anopchenko, Jack F Douglas, Bert W Rust
Abstract: We utilize dielectric relaxation process for the quantitative characterization of antiplasticization of trehalose by glycerol. The high frequency Johari-Goldstein relaxation time was obtained by analyzing the complex permittivity data in terms of the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901278

12. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903220

13. Capillary Instability in Nanoimprinted Polymer Films
Published: 5/21/2009
Authors: Kyle J. Alvine, Yifu Ding, Hyun W. Ro, Brian C. Okerberg, Alamgir Karim, Christopher 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852751

14. Grain boundaries exhibit the dynamics of glass-forming liquids
Published: 5/12/2009
Authors: James A Warren, Jack F Douglas, Hao Zhang, David J Srolovitz
Abstract: Polycrystalline materials are composites of crystalline particles or grains separated by thin amorphous grain boundaries (GBs). Although GBs have been exhaustively investigated at low temperatures, at which these regions are relatively ord ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901918

15. Equilibrium Polymerization Models of Reentrant Self-Assembly
Published: 4/24/2009
Authors: Jacek Dudowicz, Jack F Douglas, Karl Freed
Abstract: As is well known, liquid-liquid phase separation can occur either upon heating or cooling, corresponding to lower and upper critical solution phase boundaries, respectively. Likewise, self-assembly transitions from a monomeric state to an organized ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901053

16. Dielectric Spectroscopy Investigation of Relaxation in C60-Polyisoprene Nanocomposites
Published: 3/23/2009
Authors: Yifu Ding, Sebastian Pawlus, Alexei Sokolov, Jack F Douglas, Alamgir Karim, Christopher Soles
Abstract: We investigate the influence of adding C60 nanoparticles on the dielectric relaxation spectra of both unentangled and entangled polyisoprene (PIP). Relaxation modes corresponding to both segmental and chain relaxation were analyzed over a broad tempe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900194

17. 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

18. Particle Motion During the Compaction of Granular Matter
Published: 12/19/2008
Authors: Steven Slotterback, Masahiro Toiya, Leonard Goff, Jack F Douglas, Wolfgang Losert
Abstract: We track particle motions in a granular material subjected to compaction using a laser scattering based imaging method where compaction is achieved through thermal cycling. Particle displacements in this jammed fluid correlate strongly with rearrangm ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853585

19. Nanoscale thermal mechanical probe determination of softening transitions in thin polymer films
Published: 11/19/2008
Authors: Jing N. Zhou, Jack F Douglas, Alamgir Karim, Chad R Snyder, Christopher Soles, Brian Berry
Abstract: We report a quantitative study of softening behavior of glassy polystyrene (PS) films at the 100 nm length scales using nano-thermomechanometry (nano-TM), an emerging scanning probe technique where a highly-doped silicon AFM tip is resistively heated ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854052

20. MEASUREMENT OF COMPLEX CONDUCTIVITY IN CARBON NANOTUBE POLYMER COMPOSITES UNDER MECHANICAL SHEAR
Published: 11/14/2008
Authors: Jan Obrzut, Jack F Douglas
Abstract: We measured the complex conductivity of carbon nanotube-polypropylene composites under mechanical shear conditions. In order to determine how flow alters the properties of these complex fluids we constructed a rheo-dielectric test fixture, which allo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854127



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