Hubbard Joshua D, Acevedo Ruben, Edwards Kristen M, Alsharhan Abdullah T, Wen Ziteng, Landry Jennifer, Wang Kejin, Schaffer Saul, Sochol Ryan D
Department of Chemical Engineering, University of California, Berkeley, CA 94720, USA.
Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA.
Sci Adv. 2021 Jul 14;7(29). doi: 10.1126/sciadv.abe5257. Print 2021 Jul.
The emergence of soft robots has presented new challenges associated with controlling the underlying fluidics of such systems. Here, we introduce a strategy for additively manufacturing unified soft robots comprising fully integrated fluidic circuitry in a single print run via PolyJet three-dimensional (3D) printing. We explore the efficacy of this approach for soft robots designed to leverage novel 3D fluidic circuit elements-e.g., fluidic diodes, "normally closed" transistors, and "normally open" transistors with geometrically tunable pressure-gain functionalities-to operate in response to fluidic analogs of conventional electronic signals, including constant-flow ["direct current (DC)"], "alternating current (AC)"-inspired, and preprogrammed aperiodic ("variable current") input conditions. By enabling fully integrated soft robotic entities (composed of soft actuators, fluidic circuitry, and body features) to be rapidly disseminated, modified on demand, and 3D-printed in a single run, the presented design and additive manufacturing strategy offers unique promise to catalyze new classes of soft robots.
软机器人的出现带来了与控制此类系统的基础流体ics相关的新挑战。在此,我们介绍一种通过PolyJet三维(3D)打印在单次打印过程中增材制造包含完全集成流体电路的统一软机器人的策略。我们探索这种方法对于设计用于利用新型3D流体电路元件(例如流体二极管、“常闭”晶体管和具有几何可调压力增益功能的“常开”晶体管)的软机器人的功效,以响应传统电子信号的流体类似物进行操作,包括恒定流["直流(DC)"]、“交流(AC)”启发的以及预编程的非周期性(“可变电流”)输入条件。通过使完全集成的软机器人实体(由软致动器、流体电路和身体特征组成)能够快速传播、按需修改并在单次运行中进行3D打印,所提出的设计和增材制造策略为催生新型软机器人提供了独特的前景。