4D printing of a self-morphing polymer driven by a swellable guest medium†,Soft Matter

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4D printing of a self-morphing polymer driven by a swellable guest medium†
Soft Matter ( IF 2.9 ) Pub Date : 2017-12-15 00:00:00 , DOI: 10.1039/c7sm01796k
Jheng-Wun Su _{1,

2,

3,

4} , Xiang Tao _{1,

2,

3,

4} , Heng Deng _{1,

2,

3,

4} , Cheng Zhang _{1,

2,

3,

4} , Shan Jiang _{4,

5,

6,

7} , Yuyi Lin _{1,

2,

3,

4} , Jian Lin _{1,

2,

3,

4}

Affiliation

There is a significant need of advanced materials that can be fabricated into functional devices with defined three-dimensional (3D) structures for application in tissue engineering, flexible electronics, and soft robotics. This need motivates an emerging four-dimensional (4D) printing technology, by which printed 3D structures consisting of active materials can transform their configurations over time in response to stimuli. Despite the ubiquity of active materials in performing self-morphing processes, their potential for 4D printing has not been fully explored to date. In this study, we demonstrate 4D printing of a commercial polymer, SU-8, which has not been reported to date in this field. The working principle is based on a self-morphing process of the printed SU-8 structures through spatial control of the swelling medium inside the polymer matrix by a modified process. To understand the self-morphing behavior, fundamental studies on the effect of the geometries including contours and filling patterns were carried out. A soft electronic device as an actuator was demonstrated to realize an application of this programmable polymer using the 3D printing technology. These studies provide a new paradigm for application of SU-8 in 4D printing, paving a new route to the exploration of more potential candidates by this demonstrated strategy.

中文翻译：

由可溶客体介质驱动的自变形聚合物的4D打印†

迫切需要将先进的材料制成具有定义的三维（3D）结构的功能设备，以用于组织工程，柔性电子学和软机器人中。这种需求激发了新兴的四维（4D）打印技术，通过该技术，由活性材料组成的3D打印结构可以响应刺激而随时间改变其配置。尽管活性材料在执行自变形过程中无处不在，但迄今为止，其在4D打印中的潜力尚未得到充分的挖掘。在这项研究中，我们演示了商用聚合物SU-8的4D打印，该领域迄今尚未报道。该工作原理基于印刷的SU-8结构的自变形过程，该过程是通过修改过程对聚合物基体内部溶胀介质的空间控制而实现的。为了了解自变形行为，对包括轮廓和填充图案在内的几何形状的影响进行了基础研究。演示了一种软电子设备作为执行器，以利用3D打印技术实现这种可编程聚合物的应用。这些研究为SU-8在4D打印中的应用提供了新的范例，从而为通过这种已证明的策略探索更多潜在候选人提供了一条新途径。演示了一种软电子设备作为执行器，以利用3D打印技术实现这种可编程聚合物的应用。这些研究为SU-8在4D打印中的应用提供了新的范例，从而为通过这种已证明的策略探索更多潜在候选人提供了一条新途径。演示了一种软电子设备作为执行器，以利用3D打印技术实现这种可编程聚合物的应用。这些研究为SU-8在4D打印中的应用提供了新的范例，从而为通过这种已证明的策略探索更多潜在候选人提供了一条新途径。

更新日期：2017-12-15

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