Abstract
In this research, a flexible inkjet-printed temperature sensor with in-house silver nanoparticles ink is presented and compared with the sensor printed with commercial silver nanoparticles ink. These sensors have an average width of 0.5 ± 0.04 mm in the latter and 0.5 ± 0.03 mm in the former. These serpentine-structure sensors were printed on polyethylene terephthalate (PET) substrate by using a Fujifilm Dimatix 2850 printer. The corresponding results indicating resistance have been recorded in the range of 30–100 °C to evaluate the sensor performance. The result of the studies showed that there was a linear relationship between the resistance and temperature for both ink types. The printed sensors developed using the in-house ink presented higher sensitivity, 0.1086 Ω/°C, compared to the commercial ink, which was 0.0543 Ω/°C. Therefore, the flexible inkjet-printed temperature sensor with the in-house silver nanoparticles ink is recommended for the large-scale productions and implementations.
Highlights
The emerging of IoT has radically caused the printed electronics and fabrication technologies to advance since the printing techniques have been industrialized
The low-cost in-house and flexible inkjet-printed temperature sensor with inhouse silver nanoparticles ink is studied and compared to the sensor printed with commercial silver nanoparticles ink
Based on the microscope result, the percentage errors for all the printed sensors are less than 10% which is considered as the acceptable results
Summary
The emerging of IoT has radically caused the printed electronics and fabrication technologies to advance since the printing techniques have been industrialized. Paper-based electronics in the fields of flexible devices and wearables has gained great interests to be utilized in wide area electronic systems because of its low-cost in setup and methodology, as well as its eco-friendly fabrication technologies. In order to fabricate high performance temperature sensor, the type and quality of the ink is one of the challenge of the printed electronics industry. The low-cost in-house and flexible inkjet-printed temperature sensor with inhouse silver nanoparticles ink is studied and compared to the sensor printed with commercial silver nanoparticles ink. The outcome of the research has shown that the performance of the temperature sensing from the in-house sensor is very comparable to the commercial sensor
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