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Laser-engineered heavy hydrocarbons: Old materials with new opportunities.

ABSTRACT: Polycyclic heavy hydrocarbons (HHs) such as coal, tar, and pitch are a family of materials with extremely rich and complex chemistry, representing a massive opportunity for their use in a range of potential applications. The present work shows that optimal selection of initial HHs based on molecular constituents is essential in tuning the material for a particular and targeted electronic application. Combining the selection of feedstock chemistry (H:C and aromatic content) and controlling variable laser treatment parameters (laser power, speed, and focus) lead to full control over the H:C ratio, sp2 concentration, and degree of graphitic stacking order of the products. The broad intertunability of these factors results from a wide distribution of carbon material crystallinity from amorphous to highly graphitic and a broad distribution of electrical conductivity up to 103 S/m.

SUBMITTER: Zang X

PROVIDER: S-EPMC7182407 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Laser-engineered heavy hydrocarbons: Old materials with new opportunities.

Zang X X Jian C C Ingersoll S S Li Huashan H Adams J J JJ Lu Z Z Ferralis N N Grossman J C JC

Science advances 20200424 17

Polycyclic heavy hydrocarbons (HHs) such as coal, tar, and pitch are a family of materials with extremely rich and complex chemistry, representing a massive opportunity for their use in a range of potential applications. The present work shows that optimal selection of initial HHs based on molecular constituents is essential in tuning the material for a particular and targeted electronic application. Combining the selection of feedstock chemistry (H:C and aromatic content) and controlling variab ...[more]

PMID: 32494645

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