NDLI: Fabrication of Low-Cost Resistance Temperature Detectors and Micro-Heaters by Electrohydrodynamic Printing

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Fabrication of Low-Cost Resistance Temperature Detectors and Micro-Heaters by Electrohydrodynamic Printing

Content Provider	MDPI
Author	Ahmad, Salman Rahman, Khalid Cheema, Taqi Ahmad Shakeel, Muhammad Khan, Arshad Bermak, Amine
Copyright Year	2022
Abstract	EHD printing is an advanced deposition technology that is commonly utilized for the direct manufacture of electrical devices. In this study, meander-type resistive electrodes consisting of silver nanoparticles were printed directly on rigid glass and flexible polyethylene terephthalate (PET) substrates. High-resolution patterns of ≈50 µm linewidth were successfully printed on untreated surfaces utilizing a bigger nozzle of 100 µm inner diameter after improving the experimental settings. The manufactured electrodes were evaluated and used as Resistance Temperature Detectors (RTDs) and micro-heaters in a systematic manner. The temperature sensors performed well, with a Temperature Coefficient of Resistivity (TCRs) of 11.5 $\times 10^{- 3} / ° C$ and 13.3 $\times 10^{- 3} / ° C$ , for glass and PET substrates, respectively, throughout a wide temperature range of 100 °C and 90 °C. Furthermore, the RTDs had a quick response and recovery time, as well as minimal hysteresis. The electrodes’ measured sensitivities as micro-heaters were 3.3 °C/V for glass and 6.8 °C/V for PET substrates, respectively. The RTDs were utilized for signal conditioning in a Wheatstone bridge circuit with a self-heating temperature of less than 1 °C as a practical demonstration. The micro-heaters have a lot of potential in the field of soft wearable electronics for biomedical applications, while the extremely sensitive RTDs have a lot of potential in industrial situations for temperature monitoring.
Starting Page	1419
e-ISSN	2072666X
DOI	10.3390/mi13091419
Journal	Micromachines
Issue Number	9
Volume Number	13
Language	English
Publisher	MDPI
Publisher Date	2022-08-28
Access Restriction	Open
Subject Keyword	Micromachines Industrial Engineering Manufacturing Engineering Electrohydrodynamic Printing Inkjet Additive Manufacturing Micro-fabrication Printed Sensors Resistance Temperature Detectors (rtds) Micro-heaters
Content Type	Text
Resource Type	Article

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