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High-resolution electron microscopy observation and energetic analysis have been performed on ropes formed from single-walled carbon nanotubes. When individual nanotubes are twisted, the nanotube ropes become energetically stable—a configuration that also offers better structural stability. Electron microscopic image simulations of an energetically-stable rope composed of seven single-walled carbon...
The processing-structure-properties relationship of two-dimensional carbon/carbon (C/C) during the chemical vapor infiltration (CVI) process was investigated. The weight gain, density, porosity, flexural strength and flexural modulus of C/C composites were measured as a function of CVI processing time up to 72 hours. Three regions corresponding to different microstructures were observed in the CVI...
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