Determining mechanical properties of carbon microcoils using lateral force Microscopy
Determining mechanical properties of carbon microcoils using lateral force Microscopy
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DOI：
10.1109/tnano.2007.915004
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发表时间：
2008-03-01
影响因子：
2.4
通讯作者：
Chang, Shuo-Hung
中科院分区：
文献类型：
--
作者：
Chang, Neng-Kai;Chang, Shuo-Hung
利用原子力显微镜（AFM）的侧向力模式，研究了热化学气相沉积法制备的非晶碳微线圈（CMC）的压缩和拉伸力学性能。AFM悬臂尖端由压电扫描仪操纵，以接触、拉动和推动单个CMC。由CMC变形施加的横向力导致AFM悬臂的扭曲。在实验过程中，通过AFM的激光器和光电探测器来监测。在25 nm至5 μ m的张力实验范围内观察到CMC的线性响应。结果表明，CMC的弹簧常数与线圈数成合理的比例关系。无定形CMC的剪切模量估计为3 +/-0.2GPa。所提出的方法是有前途的操纵CMC的压缩和拉伸，并测量在周围环境中施加的横向力。
Mechanical properties of amorphous carbon microcoil (CMC) synthesized by thermal chemical vapor deposition method were examined in compression and tension tests, using the lateral force mode of atomic force microscope (AFM). The AFM cantilever tip was manipulated by a piezoelectric scanner to contact, pull, and push an individual CMC. The lateral force that was exerted by the CMC deformation causes the twist of the AFM cantilever. It was monitored by the laser and photodetector of the AFM during the experiments. A linear response of the CMC was observed in the range of 25 nm to 5 mu m of tension experiments. The results show that the spring constant of the CMC is reasonably proportional to the coil number. The shear modulus of the amorphous CMC is estimated to be 3 +/- 0.2 GPa. The proposed method is promising to manipulate the compression and tension of the CMC and to measure the lateral force exerted in an ambient environment.