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Structural properties of mirrored carbon spirals as revealed by scanning electron microscopy and micro‐Raman spectroscopy
Author(s) -
Shiozawa Hidetsugu,
Puchegger Stephan,
Silva S. Ravi P.,
Pichler Thomas
Publication year - 2013
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201300097
Subject(s) - raman spectroscopy , scanning electron microscope , materials science , spectroscopy , carbon fibers , nanotechnology , transmission electron microscopy , morphology (biology) , crystallography , composite number , optics , chemistry , composite material , physics , biology , genetics , quantum mechanics
A novel type of iron–carbon composite nano‐structures has been synthesised from a pressurized ferrocene vapor. Scanning electron microscopy shows that the nano‐structures are produced in large yield and high purity. Their unique morphology is manifested by high reflectional symmetry, composed of two conical arms spiralling out of an almost spherical core. The size extends to 40 μ m in length with the arm's tips as thin as 100 nm. In the micrograph, the core area shows brighter contrasts than the arms, indicating its iron richness. Micro‐Raman spectroscopy across the sample surface unravels that the graphitic arms encapsulate the iron core entirely. Such unique encapsulated nano‐composites with defined shapes could be useful in many applications.