Electronic skins for soft, compact, reversible assembly of wirelessly activated fully soft robots

Area of Science:

• Robotics
• Materials Science
• Electronic Engineering

Background:

• Soft robots offer significant advantages in compliance for dynamic environments.
• Existing soft robot designs often incorporate rigid components, creating a compliance gap.
• This inherent hardness limits motion and necessitates complex, rigid assembly.

Purpose of the Study:

• To introduce a skin-like electronic system for wirelessly activated, fully soft robots.
• To enable soft, compact, and reversible assembly of robotic driving mechanisms.
• To bridge the compliance gap in soft robotic design.

Main Methods:

• Development of a two-part electronic skin (e-skin) system for wireless inter-skin communication.
• Design of e-skins with minimized thickness (<1mm) and weight (~0.8g) and fragmented circuits.
• Integration of e-skins into soft robot frames for wireless control and actuation.

Main Results:

• Demonstrated wirelessly activated, fully soft robots with reversible assembly.
• E-skins enabled soft integration and shared fine motions with the robot frame.
• Wireless inter-skin communication proved effective for universal robotic actuation.

Conclusions:

• The proposed e-skin system successfully enables untethered, fully soft robotic actuation.
• This approach overcomes traditional limitations of rigid components in soft robotics.
• The technology offers a pathway to more adaptable, universally actuated soft robots.