Laser-engineered heavy hydrocarbons: Old materials with new opportunities
Author(s)Zang, Xuan; Jian, Caiqing; Ingersoll, S.; Lu, Z.; Ferralis, Nicola; Grossman, Jeffrey C.; ... Show more Show less
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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.
DepartmentMassachusetts Institute of Technology. Research Laboratory of Electronics; Massachusetts Institute of Technology. Department of Materials Science and Engineering
American Association for the Advancement of Science (AAAS)
Zang, X. et al. “Laser-engineered heavy hydrocarbons: Old materials with new opportunities.” Science Advances, 6, 17 (April 2020): eaaz5231 © 2020 The Author(s)
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