Published in the journal ofAdvanced Materialson 7 February 2017, researchers from Singapore and Israel demonstrate a range of stretchy materials suitable for vat polymerisation 3D printing.
这种材料通常是通过3D打印和传统方法组合而创建的。没有传统输入的3D打印可以为完成的对象提供更多的设计自由。可以创建复杂的几何形状，以允许物体机械强度和柔韧性，即它们可以挤入小地方并变成新的形状。
将该概念应用于灵活的电子设备，该团队还创建了一个柔性开关，可以进行电力，证明了材料在柔性电子领域的潜在用途Nano Dimension’s 3D printed PCBs， 或者灵活的LED screen research。
生产方法
The stretchable and UV curable (SUV) elastomers are created by mixing Allnex EBECRYL resin strains 8413 (AUD) and 113 (EAA). This compound resin is then 3D printed using a Pico Plus39 LED DLP 3D printer from the Australia based company Asiga. To retain elasticity, the resin bath is modified to keep a consistent temperature of 70 degrees Celsius.
Though DLP is the primary method explored in the study, the authors also stipulate that the technique is transferable to other modes of vat polymerisation such as SLA and CDLP.
As proof of concept, several different flexible structures are explored in the study, including a soft actuator, responsible for controlling a mechanism; a flexible gripper, for gently grabbing objects; and a squashy Bucky ball.
3D printed flexible switches
Bucky Ball是地球和太空中自然存在的碳形成。它是1983年在得克萨斯州赖斯大学（Dexas's Rice University）的一代，为该结构的碳强度开辟了材料研究领域。
在这种情况下，使用Bucky Ball构建体来演示SUV DLP 3D打印的一种可能的复杂几何形状。该结构也可以挤压，并作为导电性开关进行探索。
After pressing the Bucky switch 1000 times, it still retains its elasticity and is capable of turning on a light bulb.
研究人员还测试了SUV材料作为有机蠕虫形的执行器。
The actuator is monitored for its affects in pressurized air. In the test, it bends into an arc showing how it could be used for pneumatic control in a machine.
SUV 3D打印的执行器加压拉伸。通过D. K. Patel等人的照片。
And, in a flexible claw shape, the researchers demonstrate how the materials can be used for softly grabbing sensitive objects,similar to the fish-catching robot from MIT。
Speaking to Phys.org新加坡技术与设计大学的助理教授Qi Ge，他合着Highly Stretchable and UV Curable Elastomers for Digital Light Processing Based 3D Printing，，，，summarizes the team’s findings as follows:
我们开发了世界上最可拉伸的3D可打印弹性体。我们的新弹性体可以伸展高达1100％，这是任何可用于基于紫外线基于紫外线的3D打印技术的市售弹性体时伸长率的五倍以上。
新加坡技术与设计大学的Biao Zhang和Amir Hosein Sakhaei也与新加坡的Nanyang Technology University的Michael Layani以及以色列耶路撒冷希伯来大学的Shlomo Magdassi＆Dinesh K. Patel合作。
3 d打印技术研究可以被提名的3 d公关inting Industry Awards here.
F吃的图像显示了通过udel.edu的Bucky Ball的3D图像
