Monolithically integrated neuromorphic electronic skin for biomimetic radiation shielding

Area of Science:

• Optoelectronics
• Biomimetic systems
• Materials science

Background:

• Melanogenesis is a natural skin defense against harmful radiation.
• Adaptive radiation shielding is crucial for medical and wearable applications.
• A biomimetic neuromorphic optoelectronic system is needed for advanced radiation protection.

Purpose of the Study:

• To develop a transparent and flexible neuromorphic system for adaptive UV radiation shielding.
• To integrate ultraflexible optoelectronic circuitry and electrochromic devices for seamless neural processing.
• To achieve history-based sensing, memorizing, risk recognition, and blocking of UV radiation.

Main Methods:

• Fabrication of a transparent and flexible metal oxide-based photovoltaic neuromorphic system.
• Monolithic integration of ultraflexible optoelectronic circuitry and an electrochromic device.
• Evaluation of UV shielding capability under varying radiation intensities and applied bias.

Main Results:

• The system demonstrated autonomous UV radiation shielding, blocking up to 97% of UV radiation.
• Shielding occurred within 16.9 seconds for UV intensities ranging from 5 to 90 W/m².
• The system exhibited autonomously modulated sensitivity and response time based on UV conditions and bias.

Conclusions:

• The developed system offers a novel approach to adaptive UV radiation shielding.
• This biomimetic neuromorphic system integrates sensing, processing, and blocking functionalities in a flexible device.
• The technology holds potential for advanced radiation protection in medical and wearable applications.