论文标题
3D的定向声组件
Directed Acoustic Assembly in 3D
论文作者
论文摘要
一个镜头中创建整个3D对象是快速原型制作的最终目标，最著名的是生物制造，在这种原型中，常规方法通常会缓慢，并且对生物细胞应用机械或化学应力。在这里，我们演示了一步的物质组装，以使用声学力形成紧凑的3D形状，这是通过多个全息磁场的叠加来实现的。该技术是无接触式的，并且可以与标准实验室内的固体微粒，水凝胶珠和生物细胞一起使用。结构可以通过周围介质的凝胶固定。与以前的工作相反，这种方法以积极的声对比处理重要，并且不需要相对的波，支撑表面或脚手架。我们设想在组织工程和添加剂制造中有希望的应用。
The creation of whole 3D objects in one shot is an ultimate goal for rapid prototyping, most notably biofabrication, where conventional methods are typically slow and apply mechanical or chemical stress on biological cells. Here, we demonstrate one-step assembly of matter to form compact 3D shapes using acoustic forces, which is enabled by the superposition of multiple holographic fields. The technique is contactless and shown to work with solid microparticles, hydrogel beads and biological cells inside standard labware. The structures can be fixed via gelation of the surrounding medium. In contrast to previous work, this approach handles matter with positive acoustic contrast and does not require opposing waves, supporting surfaces or scaffolds. We envision promising applications in tissue engineering and additive manufacturing.
