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Contactless reversible 4D-printing for 3D-to-3D shape morphing
Virtual and Physical Prototyping ( IF 10.6 ) Pub Date : 2020-09-23 , DOI: 10.1080/17452759.2020.1822189
Amelia Yilin Lee 1 , Aiwu Zhou 1 , Jia An 1 , Chee Kai Chua 2 , Yi Zhang 1
Affiliation  

ABSTRACT

4D printing provides a means to create dynamic structures for self-actuating devices fabricated by additive manufacturing techniques. Most existing 4D printing processes are only capable of one-way shape morphing using a single mechanism for stimulation. In the limited successful reversible 4D-printing studies, most only demonstrate 2D-to-3D shape morphing. This study introduces a contactless shape setting mechanism to empower reversible 4D printing using a combination of stimuli. The forward shape programming is realised by asymmetric swelling with heated ethanol, and the shape recovery is accomplished by dry heating. The shape morphing can be predicted using a simulation model. Several designs are 4D-printed to achieve different forms of morphing to obtain 3D-to-3D shape morphing. The entire shape morphing cycle could be completed within as short as 3 min. The capability of 3D-to-3D shape morphing and reversibility of our 4D-printing process promise great potential for different applications such as biomimetics and soft robotics.



中文翻译:

非接触式可逆4D打印,实现3D到3D形状变形

摘要

4D打印为通过增材制造技术制造的自驱动设备创建动态结构提供了一种方法。大多数现有的4D打印过程只能使用单一刺激机制进行单向变形。在有限的成功的可逆4D打印研究中,大多数只显示了2D到3D的形状变形。这项研究介绍了一种非接触形状设置机制,可通过组合刺激来实现可逆4D打印。通过加热乙醇的不对称溶胀来实现正向形状编程,并通过干加热来实现形状恢复。可以使用模拟模型预测形状变形。4D打印了几种设计以实现不同形式的变形以获得3D到3D形状变形。整个形状变形周期可以在短短3分钟内完成。3D到3D形状变形的能力以及我们4D打印过程的可逆性,有望为仿生和软机器人等不同应用带来巨大潜力。

更新日期:2020-10-05
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