Orientation control of poly(vinylidenefluoride-trifluoroethylene) crystals and molecules using atomic force microscopy

Kimura, Kuniko; Kobayashi, Kei; Yamada, Hirofumi; Horiuchi, Toshihisa; Ishida, Kenji; Matsushige, Kazumi
June 2003
Applied Physics Letters;6/9/2003, Vol. 82 Issue 23, p4050
Academic Journal
We have developed an aligning technique for polymer crystals and molecular chains utilizing contact-mode atomic force microscopy (AFM). We have aligned lamellar crystals and molecular chains of poly(vinylidenefluoride-trifluoroethylene) thin films. By scanning the film surface using an AFM cantilever tip at the temperature range of 70-100 °, we aligned the crystals to the scan direction. Moreover, we successfully aligned the molecular chains to the scan direction by scanning at a higher temperature (135 °). The aligned chains subsequently formed large lamellar crystals, which were still ferroelectric.


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