Halide Perovskites-Based Diffusive Memristors for Artificial Mechano-Nociceptive System

Area of Science:

• Materials Science
• Neuroscience
• Electronics

Background:

• Advancements in bio-realistic electronics aim to emulate biological systems.
• Diffusive memristors exhibit resistance changes similar to neuronal potential changes.

Purpose of the Study:

• To utilize the diffusive threshold switching phenomenon in Ag-incorporated organometallic halide perovskites.
• To demonstrate the functions of afferent neurons and build an artificial mechano-nociceptive system.

Main Methods:

• Demonstrated threshold firing, relaxation, and sensitization using halide perovskites-based diffusive memristors.
• Integrated a diffusive memristor with a force-sensing resistor to create an artificial mechano-nociceptive system.
• Developed a 5x5 array of nociceptive systems for artificial skin applications.

Main Results:

• Halide perovskites-based diffusive memristors exhibited a low threshold voltage (≈0.2 V) with reliable volatile threshold switching.
• The artificial system successfully detected and discerned detrimental impacts, showing sensitization.
• The artificial skin system achieved stereoscopic nociception through array-scale sensitization.

Conclusions:

• Diffusive memristors based on halide perovskites can effectively emulate nociceptive functions.
• The artificial mechano-nociceptive system demonstrates potential for advanced bio-inspired sensory applications.
• This work represents significant progress in bio-inspired electronics and systems.