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首页> 外文会议>ASME international manufacturing science and engineering conference 2011 >LASER SHOCK BASED CONTROLLED FORMING OF SILVER NANOWIRES
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LASER SHOCK BASED CONTROLLED FORMING OF SILVER NANOWIRES

机译：基于激光冲击的银纳米线控制成形

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One-dimensional nanomaterials have attracted a great deal of research interest in the past few decades due to their unique mechanical, electrical and optical properties. Changing the shape of nanowires is a big challenge, but remains key for realistic applications of nanowires. Here we report a general technique to flexibly form nanowires into different shapes by making use of laser shock pressure. Controllable deformation is induced into nanowires in a similar manner as traditional metal forming. Shaping of silver nanowires is demonstrated, during which the Ag nanowires exhibit very good ductility (strain to failure is larger than 1). The microstructure observation indicates that the main deformation mechanism in Ag nanowires under dynamic loading is controlled by twinning and stacking fault formation. Dislocation motion and pile-up is still operative but less important. Our method provides a simple, unique, and one-step approach in massive forming and machining nanowires.
机译：一维纳米材料由于其独特的机械，电和光学特性，在过去的几十年中引起了广泛的研究兴趣。改变纳米线的形状是一个巨大的挑战，但仍然是纳米线实际应用的关键。在这里，我们报告了一种利用激光冲击压力将纳米线灵活地制成不同形状的通用技术。以与传统金属成形类似的方式将可控变形引入纳米线。证实了银纳米线的成形，在此期间，银纳米线表现出非常好的延展性（断裂应变大于1）。显微组织观察表明，在动态载荷下银纳米线的主要变形机制是由孪生和堆叠断层形成控制的。脱位运动和堆积仍然有效，但重要性较低。我们的方法为大规模成形和加工纳米线提供了一种简单，独特且一步一步的方法。

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