Bending Deformation of C_<60> Nanowhiskers in Solution and Air

概要

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The mechanical properties of C60 nanowhiskers (C60NWs) grown in a solution by a liquid-liquid interfatical precipitation method were investigated by a bending method. C60NWs in the solution exhibited large elastic deformation where they recovered for large bending with a curvature of 290 μm. On the other hand, C60NWs in air were broken even for small bending with only a 650 μm curvature. From the analysis of the bending, the yield stress or breaking stress for C60NWs in air is estimated to be 7.7 MPa, that is larger by one order compared with 0.7 MPa for bulk C60 crystals. In addition, it is shown that the Youngs modulus for C60NWs in the solution is 8.9 GPa, that is below a half of 20 GPa for bulk C60 crystals.
社団法人電気学会の論文
2008-08-01