Intrinsically stretchable all-polymer neuromorphic visual adaptive transistors based on...

Area of Science:

• Materials Science
• Neuroscience
• Optoelectronics

Background:

• Wearable intelligent vision systems require stretchable neuromorphic optoelectronics for real-time perception and adaptive processing.
• Existing bionic vision devices lack deformable photosensitive materials and have complex manufacturing, limiting ductility and multifunctionality.

Purpose of the Study:

• To develop intrinsically stretchable neuromorphic visual adaptive transistors with both ductility and multifunctionality.
• To address the limitations of current bionic vision devices.

Main Methods:

• Fabrication of a defect-tunable viscoelastic photosensitive bulk-heterojunction using multidimensional-phase-separation-induced micromesh.
• Integration into all-organic intrinsically stretchable neuromorphic visual adaptive transistors.

Main Results:

• Maintained high photosensitivity and multimodal broad-wavelength photoadaptation under 100% biaxial strain.
• Achieved a record-ultrafast adaptive time of 0.4s with an 88.4% energy-saving ratio.
• Demonstrated a low paired-pulse depression index (44.37%) for reduced abnormal discharges and restored neural network function.

Conclusions:

• The developed all-organic intrinsically stretchable visual adaptive transistors offer superior performance for bionic visual adaptive systems.
• Potential applications include encrypted wireless optical communications, advanced driving assistance systems, visual cryptography, bioinspired robots, and unmanned intelligence.