Beam-induced graphitic carbon cage transformation from sumanene aggregates

Jun Ichi Fujita; Masashi Tachi; Katsuhisa Murakami; Hidehiro Sakurai; Yuki Morita; Shuhei Higashibayashi; Masaki Takeguchi

doi:10.1063/1.4863739

Beam-induced graphitic carbon cage transformation from sumanene aggregates

Jun Ichi Fujita, Masashi Tachi, Katsuhisa Murakami, Hidehiro Sakurai, Yuki Morita, Shuhei Higashibayashi, Masaki Takeguchi

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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.

Original language	English
Article number	043107
Journal	Applied Physics Letters
Volume	104
Issue number	4
DOIs	https://doi.org/10.1063/1.4863739
Publication status	Published - 2014 Jan 29
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4863739

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title = "Beam-induced graphitic carbon cage transformation from sumanene aggregates",

abstract = "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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AU - Fujita, Jun Ichi

AU - Tachi, Masashi

AU - Murakami, Katsuhisa

AU - Sakurai, Hidehiro

AU - Morita, Yuki

AU - Higashibayashi, Shuhei

AU - Takeguchi, Masaki

PY - 2014/1/29

Y1 - 2014/1/29

N2 - 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.

AB - 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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Beam-induced graphitic carbon cage transformation from sumanene aggregates

Abstract

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