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2012 | 121 | 2 | 350-354
Article title

Photoinduced sp^3 Nanosize Domain with Frozen Shear Displacement in Graphite

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EN
Abstracts
EN
A novel sp^3-bonded nanosize domain, known as a diaphite which is an intermediate state between a graphite and a diamond, is generated by the irradiation of visible laser pulse onto a graphite crystal. The sp^3 structure is well stabilized by shear displacement between neighboring graphite layers. We theoretically study the interlayer sp^3 bond formation with frozen shear displacement in a graphite crystal, using a classical molecular dynamics and a semi-empirical Brenner potential. We show that a pulse excitation under the fluctuation of shearing motion of carbons in an initial state can generate interlayer sp^3 bonds which freeze the shear, though no frozen shear appears if there is no fluctuation initially. Moreover, we investigate a pulse excitation under the coherent shearing motion and consequently obtain that the sp^3-bonded domain with frozen shear is efficiently formed. We conclude that the initial shear is important for the photoinduced sp^3 nanosize domain formation.
Keywords
Year
Volume
121
Issue
2
Pages
350-354
Physical description
Dates
published
2012-02
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n214kz
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