"Interestingly, fullerenes can be isolated from the black sooty material produced by candles, torches and lamps. The next time you light a candle, hold a glass or a plate just above the flame. Do you see that buildup? You;ve just made some fullerenes! This substance, called lamp black, has been used in inks, cosmetics, and colorants since ancient times."
Graphene: The Superstrong, Superthin, and Superversatile Material That Will Revolutionize the World  - Joseph E. Meany, Les  Johnson

Graphene: The Superstrong, Superthin, and Superversatile Material That Will Revolutionize the World by Les Johnson & Joseph E. Meany.

[Chapter 1]