Internal Electron Tunneling Enabled Ultrasensitive Position/Force Peapod Sensors

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• 作者：Xinyong Tao ; Zheng Fan ; Bradley J. Nelson ; Gautham Dharuman ; Wenkui Zhang ; Lixin Dong ; Xiaodong Li
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：November 11, 2015
• 年：2015
• 卷：15
• 期：11
• 页码：7281-7287
• 全文大小：520K
• ISSN：1530-6992

文摘

The electron quantum tunneling effect guarantees the ultrahigh spatial resolution of the scanning tunneling microscope (STM), but there have been no other significant applications of this effect after the invention of STM. Here we report the implementation of electron-tunneling-based high sensitivity transducers using a peapod B₄C nanowire, where discrete Ni₆Si₂B nanorods are embedded in the nanowire in a peapod form. The deformation of the nanowire provides a higher order scaling effect between conductivity and deformation strain, thus allowing the potentials of position and force sensing at the picoscale.