Direct Observation of Morphological Evolution of a Catalyst during Carbon Nanotube Forest Growth: New Insights into Growth and Growth Termination
- Direct Observation of Morphological Evolution of a Catalyst during Carbon Nanotube Forest Growth: New Insights into Growth and Growth Termination
- 정서정; 이재근; 김환철; 황준연; 구본철; Dmitri N. Zakharov; Benji Maruyama; Eric A. Stach; 김승민
- Carbon Nanotube Array; Growth termination; Lifted Catalysts; In-situ TEM
- Issue Date
- VOL 8, 2055-2062
- In this study, we develop a new methodology for transmission electron microscopy (TEM) analysis that enables us to directly investigate the interface between carbon nanotube (CNT) arrays and the catalyst and support layers for CNT forest growth without any damage induced by a post-growth TEM sample preparation. Using this methodology, we perform in situ and ex situ TEM investigations on the evolution of the morphology of the catalyst particles and observe the catalyst particles to climb up through CNT arrays during CNT forest growth. We speculate that the lifted catalysts significantly affect the growth and growth termination of CNT forests along with Ostwald ripening and sub-surface diffusion. Thus, we propose a modified growth termination model which better explains various phenomena related to the growth and growth termination of CNT forests.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.