Work

In situObservation of Carbon-Nanopillar Tubulization Caused by Liquidlike Iron Particles

Year: 2004

Type: article

Abstract: The tubulization process of amorphous carbon nanopillars was observed in situ by transmis-sion electron microscopy. Amorphous carbon nanopillars were transformed into graphitic tubules by annealing at 650-900 degrees C in the presence of iron nanoparticles. A molten catalyst nanoparticle penetrated an amorphous carbon nanopillar, dissolving it, and leaving a graphite track behind. An iron nanoparticle moved with its shape changing like an earthworm. We concluded that the tubulization mechanism is a solid-(quasiliquid)-solid mechanism where the carbon phase transformation is a kind of liquid phase graphitization of amorphous carbon catalyzed by liquefied metal-carbon alloy nanoparticles.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.92.215702

Authors: Toshinari Ichihashi, Jun-ichi Fujita, Masahiko Ishida, Yukinori Ochiai

Institutions: NEC (Japan), Japan Science and Technology Agency, University of Tsukuba

Language: English

Topic: Carbon Nanotubes in Composites

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1968700433

FWCI: 5.488

Cites: 17

Cited by: 81

Related to: 10