Charge-programmed three-dimensional printing for multi-material electronic devices
Charge-programmed three-dimensional printing for multi-material electronic devices
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DOI：
10.1038/s41928-020-0391-2
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发表时间：
2020-04-06
影响因子：
34.3
通讯作者：
Zheng, Xiaoyu
中科院分区：
文献类型：
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作者：
Hensleigh, Ryan;Cui, Huachen;Zheng, Xiaoyu
三维 (3D) 打印可以创建可用于电子产品开发的复杂几何形状。然而，该方法主要限于非功能性结构材料，电子设备的3D打印通常需要嵌入、喷涂和写入等多个工艺阶段。在此，我们报告了一种 3D 打印方法，该方法可以在任意 3D 布局中批量沉积多种功能材料，从而一步创建电子设备。我们的方法使用不同表面电荷区域的可编程镶嵌来打印 3D 结构，创建一个平台，基于局部静电吸引力将功能材料沉积到复杂的结构中。该技术允许将单一金属以及多种活性材料组合（包括陶瓷、半导体、磁性和胶体材料）选择性体积沉积到特定位置的 3D 拓扑中。为了说明我们方法的功能，我们用它来制造具有 3D 电子接口的设备，可用于触觉传感、内部波映射和形状自感知。3D 打印技术可生成具有可编程带电表面图案的结构，允许将不同的功能材料沉积在预定义的区域中，可用于通过单个打印步骤创建电子设备。
Three-dimensional (3D) printing can create complex geometries that could be of use in the development of electronics. However, the approach is mainly limited to non-functional structural materials, and the 3D printing of electronic devices typically requires multiple process stages of embedding, spraying and writing. Here, we report a 3D printing approach that can volumetrically deposit multiple functional materials within arbitrary 3D layouts to create electronic devices in a single step. Our approach prints 3D structures with a programmable mosaic of distinct surface charge regions, creating a platform to deposit functional materials into complex architectures based on localized electrostatic attraction. The technique allows selective volumetric depositions of single metals and also diverse active material combinations, including ceramic, semiconducting, magnetic and colloidal materials, into site-specific 3D topologies. To illustrate the capabilities of our approach, we use it to fabricate devices with 3D electronic interfaces that can be used for tactile sensing, internal wave mapping and shape self-sensing.A 3D printing technique that produces structures with programmable patterns of charged surface, allowing different functional materials to be deposited in pre-defined regions, can be used to create electronic devices with a single printing step.