磷烯
偏压
纳米压痕
电压
热的
联轴节(管道)
材料科学
复合材料
工作(物理)
纳米技术
光电子学
物理
石墨烯
电气工程
热力学
工程类
作者
Bo Zhang,Zhenyu Wang,Chengxiang Chen,Mengyue Gu,Junhe Zhou,Jinying Zhang
摘要
Violet phosphorene (vP), a two-dimensional structure with various unique properties, has attracted much attention recently. The electromechanical behaviour, a mechanical-electrical-thermal coupling failure behaviour, of supported and suspended vP nanoflakes has been investigated by the c-AFM nanoindentation method under different loads and bias voltages in this work. A bump due to the oxidation caused by electric current-induced local heating was observed for the supported vP on substrates under mild load and bias voltage. A concave morphology was observed when a load of 1500 nN and a bias voltage of 10 V were applied. No bump was observed for the suspended vP due to the larger contact area between the probe and the sample, resulting in a lower temperature. Fatigue damage was observed for the vP nanoflakes under constant load and a cycled bias voltage from 10 V to -10 V. The electromechanical behaviour of vP was also analyzed through its specific heat capacity and conductivity by density functional theory.
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