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 Academia Sinica country nanometer science center grandson Researcher Lian Feng the group and physical institute academicians Jie Sishen the group cooperation, is preparing the high grade carbon nanometer tube membrane (Adv. Mater.18, 1817(2006)) in foundation, also has developed one effective preparation carbon nanometer tube crystal method. They use the diamond wiredrawing mold to cause in the carbon nanometer tube membrane the orientation disorderly antophragm carbon nanometer certainly to, the density increases. The further sample analysis indicated that although in the sample the antophragm carbon nanometer tube's diameter is unable the accuracy control, but chooses the appropriate yield condition, reduces the carbon nanometer tube's diameter distribution, a biggest probability diameter's carbon nanometer tube may form the two-dimensional triangle check through the Vander Var Silag's function (carbon nanometer tube crystal), a other diameter's antophragm carbon nanometer tube may regard as is this kind of crystal lattice flaw. Because between the antophragm tube's distance and the graphite level spacing is similar, they observes incisive, the peak position and the graphite (002) diffraction peak close diffraction peak for the first time in the carbon nanometer tube crystal. At the same time, in the Raman scattering research discovery carbon nanometer tube crystal's breath mold and raw material carbon nanometer tube's breath mold compares has the obvious difference, in the carbon nanometer tube crystal, the great caliber nanotube's breath mold presents the softened phenomenon, had reflected between a carbon nanometer tube the interaction is strong.
　

 (Possibly this research has the vital significance after the development carbon nanometer tube crystalline nature research for example doping presents superconductivity characteristic). This research partial results already "a Nanometer Bulletin" (Nano Letters) on published in March 14.

　 The above research work obtains the national natural sciences foundation, the technical department and the Chinese Academy of Science “hundred people plans” the project support