TechConnect World Innovation Conference and Expo June 14-17, 2015, Washington, DC
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Colocated events, NISS, SBIR, Nanotech
National SBIR Conference National Innovation Summit Nanotech 2015
TechConnect World 2015
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Rapid prototyping bacterial spore hygro-actuators for soft robotics and adaptive materials

A.‐H. Cavusoglu, X. Chen, K. Tatem, O. Sahin
Columbia University, US

Keywords: water, bacteria, soft robotics, actuators, adaptive materials

Summary:

Over the past decade, rapid prototyping has migrated from the research and industrial labs into the homes of consumers. However, these solid models are limited in demonstrating dynamic actuation. A large range of soft materials are readily available for sensing and structural applications, but soft actuators are still relatively weak and inefficient. One method of introducing strong, controllable actuation to devices with gentle stimulation is through hygroscopic actuators. We present a CNC platform and the potential toward developing printable actuators for soft robotic applications. We develop an improved spore suspension (BioInk) that resists sedimentation and improves ink jetting and surface wetting. We demonstrate that ink vectors control the direction, speed, and magnitude of actuation. Extended work by the researchers demonstrate potential for both contractile and expansive actuation. Finally, stimuli-responsive folding architectures are presented as a possible tool for hierarchical design of humidity-responsive soft robots.

 

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TechConnect World 2015
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