A Highly Sensitive NiO Flexible Temperature Sensor Prepared by Low-Temperature Sintering Electrohydrodynamic Direct...

Area of Science:

• Materials Science
• Sensor Technology
• Nanotechnology

Background:

• Flexible temperature sensors are crucial for applications in healthcare, smart homes, and automotive industries.
• Current preparation methods for flexible temperature sensors are often complex, hindering widespread adoption.
• There is a need for simplified, high-performance flexible temperature sensor fabrication.

Purpose of the Study:

• To introduce a novel nickel oxide (NiO) flexible temperature sensor.
• To demonstrate the effectiveness of low-temperature sintering technology in sensor preparation.
• To evaluate the performance and stability of the NiO flexible temperature sensor.

Main Methods:

• Fabrication of a nickel oxide (NiO) flexible temperature sensor using electrohydrodynamic direct writing.
• Implementation of a low-temperature sintering process for sensor preparation.
• Characterization of sensor performance, including temperature range, sensitivity, response time, stability, and flexibility.

Main Results:

• The NiO flexible temperature sensor exhibits high-resolution temperature measurement and good stability.
• It operates effectively over a wide temperature range (25–70 °C) with high sensitivity (max TCR of -5.194%°C^-1).
• The sensor demonstrates a rapid response time of 2 s and maintains stable performance and flexibility in complex environments.

Conclusions:

• The developed NiO flexible temperature sensor, prepared via low-temperature sintering and electrohydrodynamic direct writing, offers a simplified and effective solution.
• Its high performance, stability, and flexibility make it suitable for critical temperature monitoring applications.
• This technology has the potential to prevent equipment failure by monitoring temperature status and preventing overheating.