Formation of Shell-Shaped Carbon Nanoparticles Above a Critical Laser Power in Irradiated Acetylene


  • This work was supported by the Creative Research Initiatives Program of the Ministry of Science and Technology, Korea. We thank Dr. J. M. Kim at Samsung Advanced Institute of Technology for field-emission measurements. Dr. I. S. Altman, Y.-S. Kim, Dr. P. V. Pikhitsa, and S. Lee contributed equally to this work.


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A one-step synthesis of onion-like, shell-shaped carbon nanoparticles (SCNPs) is reported. Exposure of an acetylene flow to a continuous-wave infrared CO2 laser produces SCNPs with continuous bent-graphene layers in bulk quantity, but only above a threshold laser power.