カーボンナノチューブの一方向形状記憶効果における回復時の力計測

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  • Measurement of Recovery Force in One-Way Shape Memory Effect of Carbon Nanotube

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Using a conductive soft Si probe for atomic force microscopy as an electrode of nanomanipulater installed in a transmission electron microscope, we successfully measured forces generated by one-way shape memory effect of a carbon nanotube (CNT). We revealed from the measured forces that the recovery moment is about several tens aNm for a 3.5 nm-diameter CNT consisting of four walls. The measured recovery forces are around thousand times stronger than the output of nano-sized bio-molecular actuators. This finding indicates that a CNT has an advantage as high-power actuators.

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