FRACTAL CARBON FILAMENTS GROWN ON INSULATORS UNDER IRRADIATION IN AN ELECTRON-MICROSCOPE

被引：24
作者：
BANHART, F
机构：
[1] Max-Planck-Institut für Metallforschung, Institut für Physik, Stuttgart, D-70506
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 1994年 / 69卷 / 01期
关键词：
D O I：
10.1080/09500839408242436
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new phenomenon is reported which appears during the deposition of hydrocarbon molecules on electrically charged insulators in transmission electron microscopes. Micron-sized aggregates of ramified amorphous carbon filaments with fractal, densely branched or compact morphologies are observed. Heavy electron irradiation produces fullerene-like clusters. Under suitable conditions the aggregates show striking similarities to the shapes of many biological systems. The growth occurs in vacuum and is not diffusion limited. A simple Laplacian growth mechanism is considered which leads to the formation of fractal or non-fractal aggregates.
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页码：45 / 51
页数：7
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