| CPC A61M 37/0015 (2013.01) [B81B 1/008 (2013.01); B81C 1/00531 (2013.01); A61M 2037/0023 (2013.01); A61M 2037/0053 (2013.01); B81B 2201/055 (2013.01)] | 19 Claims |

|
1. A product, comprising:
an elongated carbon-containing pillar having a bottom and a tip opposite the bottom,
wherein the width of the pillar measured 1 nm below the tip is less than 700 nm,
wherein the pillar, when formed, has no oxidation on an outer surface thereof.
|