4.4 Article

Multi-actuator light-controlled biological robots

Journal

APL BIOENGINEERING
Volume 6, Issue 3, Pages -

Publisher

AIP Publishing
DOI: 10.1063/5.0091507

Keywords

-

Funding

  1. NSF EFRI C3 SoRo
  2. Strategic Research Initiatives (SRI) Program of the University of Illinois at Urbana-Champaign
  3. NSF Science and Technology Center Emergent Behavior of Integrated Cellular Systems
  4. [1830881]
  5. [CBET0939511]

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Biohybrid robots, composed of cellular actuators and synthetic scaffolds, have gained attention for their biological advantages. These robots can mimic life-like movements and require complex functionality and robust fabrication processes for walking or crawling. A new fabrication approach has been developed to create multi-actuator biohybrid walkers with multi-directional walking capabilities through noninvasive optical stimulation.
Biohybrid robots, composed of cellular actuators and synthetic scaffolds, have garnered much attention in recent years owing to the advantages provided by their biological components. In recent years, various forms of biohybrid robots have been developed that are capable of life-like movements, such as walking, swimming, and gripping. Specifically, for walking or crawling biorobots, there is a need for complex functionality and versatile and robust fabrication processes. Here, we designed and fabricated multi-actuator biohybrid walkers with multi-directional walking capabilities in response to noninvasive optical stimulation through a scalable modular biofabrication process. Our new fabrication approach provides a constant mechanical strain throughout the cellular differentiation and maturation process. This maximizes the myotube formation and alignment, limits passive bending, and produces higher active forces. These demonstrations of the new fabrication process and bioactuator designs can pave the way for advanced multi-cellular biohybrid robots and enhance our understanding of the emergent behaviors of these multi-cellular engineered living systems. (C) 2022 Author(s).

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