Synthesis of high yield single helical carbon microsprings by catalytic chemical vapor deposition and an experimental investigation of their growth mechanism

Journal Article · Fri Jun 01 00:00:00 EDT 2007 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2737381· OSTI ID:20979424

Jining, Xie; Varadan, V K ^[1]

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1. Nanomaterials and nanotubes Research Laboratory, Center of Excellence for Nano-, Micro-, and Neuro-Electronics, Sensors and Systems, College of Engineering, University of Arkansas, 700 Research Center Boulevard, Fayetteville, Arkansas 72701 (United States)

A type of single helical carbon microsprings (SHCMSs) was synthesized by catalytic chemical vapor deposition. The as-prepared SHCMSs were characterized by a number of techniques such as scanning and transmission electron microscopy, x-ray powder diffraction, and x-ray photoelectron spectroscopy. Experimental results indicate that during the synthesis both morphology change and crystalline phase transformation occur for cobalt catalytic particles and certain chemical bonding form between cobalt and sulfur atoms. Based on the data from this study, a possible growth mechanism of SHCMSs was discussed.

• OSTI ID: 20979424
• Journal Information: Journal of Applied Physics, Vol. 101, Issue 11; Other Information: DOI: 10.1063/1.2737381; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON
CATALYSTS
CHEMICAL BONDS
CHEMICAL VAPOR DEPOSITION
COBALT
CRYSTAL GROWTH
MORPHOLOGY
NANOSTRUCTURES
PARTICLES
PHASE TRANSFORMATIONS
SCANNING ELECTRON MICROSCOPY
SULFUR
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY