论文标题
利用飞秒激光暴露用于功能材料的累加和减法制造：设计器3D磁性纳米结构的途径
Exploiting femtosecond laser exposure for additive and subtractive fabrication of functional materials: A Route to designer 3D Magnetic Nanostructures
论文作者
论文摘要
三维纳米结构功能材料是重要的系统，允许新的手段精巧地控制电磁特性。一个关键问题是在纳米级上实现3D打印方法，可以产生一系列功能材料。在这封信中，结果表明，当与牺牲层的飞秒加工结合使用时，可以使用两光刻，可用于实现这种视觉并产生复杂几何形状的3D功能性纳米材料。通过制造3D磁性纳米线，表现出受控域壁注入和传播，这证明了这一点。其次，我们制造了大型3D人造自旋结构，可以使用光学磁力测定法探测其复杂的开关。我们表明，通过仔细分析磁光kerr效应信号并与微磁模拟相比，可以从3DASI晶格中获得深度依赖性切换信息。这项工作为新材料铺平了道路，该材料利用了非平凡的3D几何形状提供的其他物理学。
Three-dimensional nanostructured functional materials are important systems, allowing new means to intricately control electromagnetic properties. A key problem is realising a 3D printing methodology upon the nanoscale that can yield a range of functional materials. In this letter, it is shown that two-photon lithography when combined with femtosecond machining of sacrificial layers, can be used to realise such a vision and produce 3D functional nanomaterials of complex geometry. This is demonstrated by fabricating 3D magnetic nanowires that exhibit controlled domain wall injection and propagation. Secondly, we fabricate large scale 3D artificial spin-ice structures whose complex switching can be probed using optical magnetometry. We show that by careful analysis of the magneto-optical Kerr effect signal and by comparison with micro-magnetic simulations, depth dependent switching information can be obtained from the 3DASI lattice. The work paves the way to new materials, which exploit additional physics provided by non-trivial 3D geometries.
