Derek L. Ho

Derek Ho is now a member of the NIST Polymers team. His primary responsibility is the commission and maintenance of a SAXS instrument.

Career History/Education:

• Ph.D., Materials and Nuclear Engineering, December 1998
  University of Maryland, College Park, Maryland, USA
• M.Sc., Physics, March 1992
  University of Oregon, Eugene, Oregon, USA
• B.Sc., Physics, June 1988
  Fu-Jen Catholic University, Taipei, Taiwan, Republic of China

Research Interests:

• Structure-property relatioship of photo-luminescent semi-conducting polymers for organic light-emitting diodes (OLEDs) in solution and thin film.
• Mechanical and rheological properties, thermodynamics and morphology of polymer/clay nanocomposites.
• Molecular conformation and inter-molecule interactions of proteins.
• Properties and behaviors of poly(ethylene oxide) in solution.

Selected Publications:

• Ho, D. L.; Glinka, C. J. J. Poly. Sci. Part B: Polymer Phys. (in press - 2004) "New Insights inot Hansen's Solubility Parameters"
• Hammouda, B.; Ho, D. L.; Kline, S. R. Macromolecules 37, 6932 (2004) "Insights into Clustering in Poly(ethylene oxide) Solutions"
• Mackay, M. E.; Dao, T. T.; Tuteja, A.; Ho, D. L.; van Horn, B.; Kim, H.-C.; Hawker, C. J. Nature Materials 2, 762 (2003) "Nanoscales Effects Leading to Non-Einstein-like Reduction in Viscosity"
• Ho, D. L.; Glinka, C. J. Chemistry of Materials 15, 1309 (2003) "Effects of Solvent Solubility Parameters on Organoclay Dispersions"
• Ho, D. L.; Hammouda, B.; Kline, S. R. J. Poly. Sci. Part B: Polymer Phys. 41, 135 (2003) "Clustering of Poly(ethylene oxide) in Water Revisited"
• Hammouda, B.; Ho, D. L.; Kline, S. R. Macromolecules 35, 6578 (2002) "SANS from Poly(ethylene oxide)/Water Gels"
• Nieh, M.-P.; Kumar, S. K.; Ho, D. L.; Briber, R. M. Macromolecules 35, 6384 (2002) "Neutron Scattering Study of Chain Conformations in the Energetically Neutral Pores of Vycor Glass"
• Ho, D. L.; Briber, R. M.; Glinka, C. J. ACS Symposium for Polymer Nanocomposites No. 804, Chapter 11 (2001) "Studies of Organically Modified Clays by Scattering Techniques"
• Ho, D. L.; Briber, R. M.; Glinka, C. J. Chemistry of Materials 13, 1923 (2001) "Characterization of Organically Modified Clays using Scattering and Microscopy Techniques"
• Jones, R. L.; Kumar, S. K.; Ho, D. L.; Briber, R. M.; Russell, T. P. Macromolecules 34, 559 (2001)"Chain Conformation in Ultrathin Polymer Films Using Small-Angle Neutron Scattering"
• Jones, R. L.; Kumar, S. K.; Ho, D. L.; Briber, R. M.; Russell, T. P. Nature 400, 146 (1999)"Chain Conformation in Ultrathin Polymer Films"
• Ho, D. L; Briber, R. M.; Jones, R. L.; Kumar, S. K.; Russell, T. P. Macromolecules 31, 9247 (1998) "Small-Angle Neutron Scattering Studies on Thin Films of Isotopic Polystyrene Blends"

Other Interests:

• His new baby boy!

Contact Information:

• Derek L. Ho
  National Institute of Standards and Technology
  100 Bureau Drive, Bldg. 235, STOP 8562
  Gaithersburg, MD 20899-8562
• (301) 975-6422 (office), (301) 921-9847 (fax)
• derek.ho@nist.gov

Last modified 04-January-2006