Biohybrid chiral materials for an ultralight reconfigurable flying robot

Area of Science:

• Robotics and Material Science
• Bio-inspired Engineering
• Aerodynamics

Background:

• Structural handedness is crucial for natural systems' motion and aerodynamics.
• Controlling untethered miniature flyers wirelessly using artificial materials remains a challenge.

Purpose of the Study:

• To develop a novel feather-polymer hybrid chiral flyer for light-controlled airborne motion.
• To explore programmable and reversible photomechanical actuation for miniature flyers.

Main Methods:

• Integration of natural afterfeathers with a light-responsive azobenzene-polymer actuator.
• Photopolymerization to synthesize the actuator, enabling light-induced torsion and actuation.
• Computational fluid dynamics (CFD) simulations to analyze aerodynamic forces and airflow patterns.

Main Results:

• Demonstrated light-controlled airborne motion and programmable actuation of the chiral flyer.
• Achieved independent control of multiple flyers and midair collection via vortex-induced aggregation.
• CFD revealed asymmetric pressure gradients driving rotation and low-airflow regions for aerial trapping.

Conclusions:

• Introduced a strategy for programmable, wireless ultralight flyers by combining natural structures and synthetic actuators.
• Bridged natural handedness principles with advanced materials for intelligent airborne systems.
• Opened new avenues for dynamic wireless control in micro-aerial robotics.