Au/Pd-decorated LIG H₂ sensing

Ultra-fast room-temp H₂ detection

Precisely patterned highly conductive LIG onto quartz via laser-induced backward transfer, then decorated with Au/Pd nanoparticles, achieving a durable device architecture and exceptional room-temperature hydrogen sensing capability.

Kumar, Sunil · Yifei, Wu · Tao, Wang · Li, Nian · Deng, Zanhong · Siyuan, Liu · Wang, Shimao · Wang, Zhenyang · Lu, Huadong · Meng, Gang

Sensors and Actuators, A: Physical 2026

Specifications

Detection limit

{'zh': '0.2', 'en': '0.2'} %

Response time

{'zh': '64', 'en': '64'} s

Recovery time

{'zh': '348', 'en': '348'} s

Advantages

Room-temperature operation

The sensor operates at room temperature, eliminating the need for high-temperature heating required by traditional metal oxide gas sensors, thereby reducing power consumption and safety hazards.

Durable and stable

The laser-induced backward transfer technique precisely patterns highly conductive LIG onto ITO interdigitated electrodes, ensuring a durable, well-defined architecture that prevents material delamination, leading to long-term stability.

Rapid response

The sensor exhibits a rapid response time of 64 s, enabling timely early warning of hydrogen leaks.

Applications

• Hydrogen leak detection：Provides early detection of low-level hydrogen leaks to prevent explosion hazards.
• Hydrogen energy safety monitoring：Enables real-time monitoring of hydrogen leaks in production and storage facilities for safety.
• Industrial gas sensing networks：Can be integrated into industrial gas sensing networks for multi-point hydrogen monitoring.
• MEMS gas sensors：Offers a scalable fabrication approach for miniaturized gas sensors.