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- W2885609487 endingPage "556" @default.
- W2885609487 startingPage "543" @default.
- W2885609487 abstract "The method for production of atomic chains by heating of graphene nanoribbons (GNRs) is proposed and studied by molecular dynamics simulations. The Brenner potential is revised to adequately describe formation of atomic chains, edges and vacancy migration in graphene. A fundamentally different behavior is observed for zigzag-edge GNRs with 3 and 4 atomic rows (3 and 4-ZGNRs) at 2500 K: formation of triple, double and single carbon chains with the length of hundreds of atoms in 3-ZGNRs and edge reconstruction with only short chains and GNR width reduction in 4-ZGNRs. The chain formation mechanism in 3-ZGNRs is revealed by analysis of bond reorganization reactions and is based on the interplay of two processes. The first one is breaking of bonds between 3 zigzag atomic rows leading to triple chain formation. The second one is bond breaking within the same zigzag atomic row, which occurs predominantly through generation of pentagons with subsequent bond breaking in pentagons and results in single or double chain formation. The DFT calculations of the barriers for relevant reactions are consistent with the mechanism proposed. The possibility of chain-based nanoelectronic devices with a controllable number of chains is discussed." @default.
- W2885609487 created "2018-08-22" @default.
- W2885609487 creator A5002957621 @default.
- W2885609487 creator A5006108298 @default.
- W2885609487 creator A5055604670 @default.
- W2885609487 creator A5076457015 @default.
- W2885609487 date "2018-12-01" @default.
- W2885609487 modified "2023-09-27" @default.
- W2885609487 title "Long triple carbon chains formation by heat treatment of graphene nanoribbon: Molecular dynamics study with revised Brenner potential" @default.
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