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

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2 Author(s)
Xie, Jining ; 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 ; Varadan, V.K.

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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.

Published in:

Journal of Applied Physics  (Volume:101 ,  Issue: 11 )