Beam-induced graphitic carbon cage transformation from sumanene aggregates | Zendy

Jun-ichi Fujita | Zendy; Masashi Tachi | Zendy; K. Murakami | Zendy; Hidehiro Sakurai | Zendy; Yuki Morita | Zendy; Shuhei Higashibayashi | Zendy; Masaki Takeguchi | Zendy

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Beam-induced graphitic carbon cage transformation from sumanene aggregates

Author(s) -

Jun-ichi Fujita,

Masashi Tachi,

K. Murakami,

Hidehiro Sakurai,

Yuki Morita,

Shuhei Higashibayashi,

Masaki Takeguchi

Publication year - 2014

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4863739

Subject(s) - molecule , carbon fibers , transformation (genetics) , irradiation , fullerene , cathode ray , cage effect , electron , materials science , chemistry , cage , chemical physics , electron beam processing , atomic physics , photochemistry , composite material , physics , organic chemistry , quantum mechanics , nuclear physics , biochemistry , mathematics , combinatorics , composite number , gene

We found that electron-beam irradiation of sumanene aggregates strongly enhanced their transformation into a graphitic carbon cage, having a diameter of about 20 nm. The threshold electron dose was about 32 mC/cm2 at 200 keV, but the transformation is still induced at 20 keV. The transformation sequence suggested that the cage was constructed accompanied by the dynamical movement of the transiently linked sumanene molecules in order to pile up inside the shell. Thus, bond excitation in the sumanene molecules rather than a knock-on of carbon atoms seems to be the main cause of the cage transformation

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