Polymorphic display and texture integrated systems controlled by capillarity.-猫眼课题宝

DOI：

10.1126/sciadv.adh1321

发表时间：

2023-06-30

期刊：

SCIENCE ADVANCES

影响因子：

13.6

通讯作者：

中科院分区：

综合性期刊1区

文献类型：

作者：

Ha, Jonghyun;Kim, Yun Seong;Li, Chengzhang;Hwang, Jonghyun;Leung, Sze Chai;Siu, Ryan;Tawfick, Sameh

来源链接：

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10313163/

软机器人为具有挑战性的工程问题提供了不寻常的生物灵感解决方案。彩色的展示和变形的附属物是自然生物用来伪装、吸引配偶或阻止捕食者的重要信号方式。使用传统的发光器件来设计这些显示功能是能源昂贵且体积庞大的，并且需要刚性基板。在这里，我们使用毛细管控制的机器人扑鳍来创建可切换的视觉对比度，并产生状态持久的多像素显示器，其能效分别比发光设备和电子纸高1000倍和10倍。我们揭示了这些鳍的双同态能力，即它们在直线或弯曲稳定平衡之间切换。通过控制液滴在翅片上的温度，多功能电池同时显示出与光信号解耦的红外信号，用于多光谱显示。超低功耗，可扩展性和机械合规性使它们适用于曲线和软机器。机器人的软附肢通过拍打的鳍产生状态持续的纹理和视觉信号。

Soft robotics offer unusual bioinspired solutions to challenging engineering problems. Colorful display and morphing appendages are vital signaling modalities used by natural creatures to camouflage, attract mates, or deter predators. Engineering these display capabilities using traditional light emitting devices is energy expensive and bulky and requires rigid substrates. Here, we use capillary-controlled robotic flapping fins to create switchable visual contrast and produce state-persistent, multipixel displays that are 1000- and 10-fold more energy efficient than light emitting devices and electronic paper, respectively. We reveal the bimorphic ability of these fins, whereby they switch between straight or bent stable equilibria. By controlling the droplets temperature across the fins, the multifunctional cells simultaneously exhibit infrared signals decoupled from the optical signals for multispectral display. The ultralow power, scalability, and mechanical compliance make them suitable for curvilinear and soft machines. Robotic soft appendages operate by the flapping fins produce state-persistent texture and visual signals.