高灵敏度石墨烯应变传感器的拉剪耦合
Coupling Tension and Shear for Highly Sensitive Graphene-Based Strain Sensors
摘要：
我们报告，基于其变化的电子传输耦合的张力和剪切变形，高灵敏度的石墨烯为基础的应变传感器组成的扶手椅石墨烯纳米取向（AGNR）之间的金属接触。当任何方向的名义应变从2.5%增加到10%时，电导降低，特别是当系统从电中性区域改变时。在有限的偏压下，原始电导和电导的相对比例都平滑地依赖于栅极电压，波动可以忽略不计，这与原始石墨烯相反。具体地，当标称应变为10%并且角度从0度变化到90度时，电导的相对比例从60%变化到90%。
英文摘要：
We report, based on its variation in electronic transport to coupled tension and shear deformation, a highly sensitive graphene-based strain sensor consisting of an armchair graphene nanoribbon (AGNR) between metallic contacts. As the nominal strain at any direction increases from 2.5 to 10%, the conductance decreases, particularly when the system changes from the electrically neutral region. At finite bias voltage, both the raw conductance and the relative proportion of the conductance depends smoothly on the gate voltage with negligible fluctuations, which is in contrast to that of pristine graphene. Specifically, when the nominal strain is 10% and the angle varies from 0 degree to 90 degree, the relative proportion of the conductance changes from 60 to 90%.
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