Insect-inspired micro-optical antenna enables ultrasensitive multisensory perception.

Area of Science:

• Robotics and Bio-inspired Engineering
• Materials Science and Nanotechnology
• Sensor Technology

Background:

• Insect antennae possess highly optimized ultrasensitive tactile, auditory, and olfactory senses.
• Developing micro-sized artificial antennae with multisensory perception for robotic integration is challenging.
• Current artificial sensing systems often lack the sensitivity, miniaturization, and multi-modal capabilities of biological antennae.

Purpose of the Study:

• To design and fabricate a bioinspired micro-optical antenna (MOA) that replicates the architecture and functionality of insect antennae.
• To achieve ultrasensitive, fast-response, and low-power multisensory perception (tactile, auditory, olfactory) using a micro-scale device.
• To demonstrate the integration of the MOA with robotic systems for enhanced perception and autonomous operation.

Main Methods:

• Leveraging optical micro/nanofibers (MNFs) encapsulated within a functionalized polymer film to create the MOA.
• Utilizing the radiation or absorption of MNF-guided light, modulated by external stimuli, for sensing.
• Developing a lightweight MOA module (~0.1 grams) for seamless mounting on aerial and ground robots.

Main Results:

• The MOA demonstrated ultrasensitive, fast-response, and low-power tactile, auditory, and olfactory sensing capabilities.
• The device successfully mimicked the sensing performance of biological antennae at a micro-scale.
• The MOA module enabled multisensory perception and autonomous navigation when integrated into flapping-wing and insect-like ground robots.

Conclusions:

• The developed MOA offers a promising bioinspired solution for advanced robotic sensing.
• This technology paves the way for miniaturized, versatile sensing systems applicable across various technological domains.
• The MOA's integration with robots highlights its potential for enabling sophisticated autonomous operations.