TWA 34

Nanoparticle Populations

Activities in this TWA will advance the measurement of nano-particles (NP) populations such as metal nano-wires, single-walled carbon nanotubes, magnetic nano-particles, nanopowders and quantum dots. The focus of the TWA is standardization and cross-comparison of measurement techniques for determining the defining dimensional, electronic, chemical, optical or magnetic characteristics of the nano-particles.

Projects within the TWA may be defined for single classes of dispersed nano-particles. Activities have been initiated with a project on refining the measurement of chirality distribution in polydisperse single-walled carbon nanotube samples. Other characterizations of polydisperse nanoparticle populations, such as the measurement of titanium dioxide nano-powders, magnetic nanoparticles, or general measurements of particle size and dispersion state are also considered to be within the bounds of this TWA.

Completed Projects

  • PROJECT 1: Single-Wall Carbon Nanotube (SWCNT) Chiral Vector Distribution Determination [Complete]
  • PROJECT 2: Titanium Dioxide (TiO2) Nanopowder Surface Area Measurement
  • PROJECT 3: Techniques for Characterizing Morphology of Airborne Nanoparticles
  • PROJECT 4: Raman spectroscopy of fullerene nanofibers
  • PROJECT 5: Method validation for determination of average aspect ratio of gold nanorods (GNRs) using UV-visible-NIR absorption spectrometry
  • PROJECT 6: Primary particle size distribution measurements using transmission electron microscopy

Active Projects

More information

Dr. Jeffrey Fagan  (Chair)   +1 301 975 6740