Uncategorized
- Earth
Sulfur Studies: Early Earth’s air was oxygen-poor
Analyses of ancient sulfide minerals and the modern organisms that create sulfides are giving scientists a better idea of what Earth's atmosphere and oceans may have been like billions of years ago.
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19194
Your article reports that adding single-wall carbon nanotubes to a ceramic can “nearly triple its resistance to fracturing.” The similar technology of adding tubes (straw) to bricks has been around for thousands of years and is of comparable effectiveness. Lee W. CaspersonPortland, Ore.
- Materials Science
Fracture Protection: Nanotubes toughen up ceramics
The addition of carbon nanotubes to a ceramic material dramatically improves its fracture resistance.
