52 citations · 71 across the 4 of their papers we have counts for
3 papers · 1 filter
Computer Simulation of Carbonization and Graphitization of Coal
C. Ugwumadu, R. Olson, N. L. Smith +4
This study describes computer simulations of carbonization and graphite formation, including the effects of hydrogen, nitrogen, oxygen, and sulfur. We introduce a novel technique t…
Formation of amorphous carbon multi-walled nanotubes from random initial configurations
C. Ugwumadu, R. Thapa, Y. Al-Majali +2
Amorphous carbon nanotubes (a-CNT) with up to four walls and sizes ranging from 200 to 3200 atoms have been simulated, starting from initial random configurations and using the Gau…
Ab initio simulation of amorphous graphite
Rajendra Thapa, Chinonso Ugwumadu, Kishor Nepal +2
A disorder-order transition from amorphous carbon (aC) to layered amorphous graphene (LAG) has been predicted using ab-initio methods. Amorphous carbon at densities close to the gr…