Manufacturing Industry
NIST Researchers Begin to Quantify Nanotube Recipes.
Advanced Materials & Composites News, February, 2004
January 30, 2004 - National Institute of Standards and Technology (NIST) researchers continue to pursue potential recipes for successful use of carbon nanotubes. In a set of experiments reported in the January 30 issue of Physical Review Letters, NIST researchers have started to quantify both the problem and the solution.
The scientists used a microscope and an "optical flow cell" to measure the force needed to mix different concentrations of nanotubes. Their findings suggest that flow conditions often encountered in the processing of carbon nanotube suspensions can actually have the opposite effect, leading to demixing. The effect is related directly to the long fiber-like structure of the nanotubes. Although this work only sets the stage for resolving...
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