Impression par jets d’encre de capteurs de température résistifs sur substrat d’aluminium anodisé

Abstract

Electronic sensors are essential devices used in various fields such as healthcare, security, environment, and information technology. They measure, detect, and transmit valuable information that enhances our daily lives. In the healthcare field, electronic sensors like heart rate monitors and glucose sensors enable precise monitoring of vital patient parameters, facilitating diagnosis and treatment of diseases. Additionally, implantable sensors and telemedicine offer new perspectives in remote healthcare. In the security domain, motion sensors, smoke detectors, and surveillance cameras are used to protect people and property, with advancements in artificial intelligence for more accurate detection and rapid response to emergency situations. Electronic sensors are also utilized to monitor the environment, measuring air quality, water pollution, and predicting weather conditions. In information technology, electronic sensors collect real-time accurate data, allowing for automatic adjustment of device parameters and providing a better user experience. However, traditional production of electronic sensors has a significant environmental impact due to resource-intensive operations and waste generation. Additive manufacturing, such as direct engraving printing and inkjet printing, offers advantages in waste reduction, efficient resource utilization, and reduced energy consumption. These methods enable precise sensor production, using only the necessary amount of material. Inkjet printing has a progressive history since the 1950s, with continuous progress in resolution, speed, ink durability, and compatibility with different materials. Today, it is widely used in various fields, providing cost-effective and versatile solutions. Electronic sensors are indispensable in our modern society, and inkjet printing has contributed to their evolution and accessibility. In this paper, a resistive temperature sensor is printed on an anodized aluminum substrate using a polymeric sealant as an electrical insulator. The results obtained from a sample of 14 specimens were similar. The inkjet printing process is optimized by considering droplet deposition uniformity and the final conductivity of the sensor. The thermal annealing method and its repercussions are analyzed to propose an optimal approach. After subjecting the samples to multiple thermal cycles, the sensor's performance under high-temperature conditions can be confirmed and a temperature coefficient of resistance of 0.43 Ω/°C is observed.

Date	7 Sept 2023
Original language	French
Awarding Institution	École de technologie supérieure
Supervisor	Sylvain G. Cloutier (Supervisor)