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A comment on Launch HN: Saratoga Energy (YC W19), Better Carbon Nanotubes from Carbon Dioxide.

Re:Launch HN: Saratoga Energy (YC W19), Better Carbon Nanotu... by nthompson on Monday March 04, 2019 @08:25PM (#19307357)
Can you selectively grow semiconducting tubes, or metallic tubes, or do you only get a mixture of semiconducting and metallic?
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Re:Launch HN: Saratoga Energy (YC W19), Better Carbon Nanotu... by SaratogaEnergy on Monday March 04, 2019 @10:36PM (#19307901)
We grow conductive multi-walled carbon nanotubes. Some of the layers may be semi-conductive. But in bulk they are a conductive material. We haven't refined the process to the point where we can select for conductivity type yet.
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