Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea.
Department of Mechanical and Aerospace Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea.
Sci Robot. 2020 Jul 15;5(44). doi: 10.1126/scirobotics.aaz5405.
Spiders use adhesive, stretchable, and translucent webs to capture their prey. However, sustaining the capturing capability of these webs can be challenging because the webs inevitably invite contamination, thus reducing its adhesion force. To overcome these challenges, spiders have developed strategies of using webs to sense prey and clean contaminants. Here, we emulate the capturing strategies of a spider with a single pair of ionic threads based on electrostatics. Our ionic spiderwebs completed consecutive missions of cleaning contamination on itself, sensing approaching targets, capturing those targets, and releasing them. The ionic spiderwebs demonstrate the importance of learning from nature and push the boundaries of soft robotics in an attempt to combine mutually complementary functions into a single unit with a simple structure.
蜘蛛利用具有粘性、弹性和半透明性的蛛网来捕获猎物。然而，维持这些蛛网的捕获能力具有挑战性，因为蛛网不可避免地会受到污染，从而降低其粘附力。为了克服这些挑战，蜘蛛已经发展出利用蛛网来感知猎物和清除污染物的策略。在这里，我们基于静电学用一对离子线来模拟蜘蛛的捕获策略。我们的离子蛛网成功地连续完成了自身清洁污染、感知接近目标、捕获目标和释放目标的任务。离子蛛网展示了向大自然学习的重要性，并推动了软机器人技术的发展，试图将相互补充的功能结合到一个具有简单结构的单一单元中。
