Zeros Distribution of the Jones Polynomial for Pretzel Links

In this paper, we deal with basic properties of some pretzel links and properties of the Jones polynomials of some pretzel links. By using these properties, the zero distribution of pretzel links is studied. We discuss the properties of the Jones polynomial of non-tame pretzel links and give that zeros of the Jones polynomial of these pretzel links are distributed on the planar curves.

喷射成型法制备石墨烯杂化碳纳米管应变传感器

采用石墨烯片(GnPs)和多壁碳纳米管(MWCNTs)制备了高灵敏度和线性应变传感器。通过优化超声时间和球磨混合过程获得GnPs/MWCNTs混合物的最佳分散比(30%GnPs)。然后将混合物喷涂到通过特定条件处理的PU膜上作为应变传感器。单调拉伸结果表明,与纯MWCNTs传感器相比,具有30%GnPs的传感器表现出相对高的传感范围(0~7.5%),传感系数(181.36)和99.545%的线性度。升/降温(0~200℃)实验结果表明传感器升温过程中电阻温度系数为-6.103%/℃,降温过程中电阻温度系数为-5.993%/℃,传感器具有较好的温敏特性和可逆性。