Ferrite-based room temperature negative temperature coefficient printed thermistors

Two screen printing inks were developed for the low-temperature fabrication of printed and flexible thick film negative temperature coefficient (NTC) thermistors able to operate at room temperature. The first of the two screen printing inks developed utilised cobalt ferrite (CoFe2O4) as the temperat...

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Main Authors:	Jack McGhee, Jagdeep Sagu, Darren Southee, Peter SA Evans, Upul Wijayantha-Kahagala-Gamage
Format:	Default Article
Published:	2020
Subjects:	Artificial intelligence not elsewhere classified Electrical & Electronic Engineering Electrical and Electronic Engineering Communications Technologies Artificial Intelligence and Image Processing
Online Access:	https://hdl.handle.net/2134/13013807.v1
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id	rr-article-13013807
record_format	Figshare
spelling	rr-article-130138072020-10-29T00:00:00Z Ferrite-based room temperature negative temperature coefficient printed thermistors Jack McGhee (6618125) Jagdeep Sagu (1260576) Darren Southee (1251114) Peter SA Evans (9426470) Upul Wijayantha-Kahagala-Gamage (1248345) Artificial intelligence not elsewhere classified Electrical & Electronic Engineering Electrical and Electronic Engineering Communications Technologies Artificial Intelligence and Image Processing Two screen printing inks were developed for the low-temperature fabrication of printed and flexible thick film negative temperature coefficient (NTC) thermistors able to operate at room temperature. The first of the two screen printing inks developed utilised cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub>) as the temperature sensing material with the second ink incorporating manganese ferrite (MnFe<sub>2</sub>O<sub>4</sub>). These were then screen printed onto lithographically printed silver interdigitated electrodes with a 200-micron track and gap using a synthetic paper (Teslin) as the substrate. The inks required a 10-minute curing step at 80<sup>o</sup>C. Preannealing of the ferrite powders before ink formulation enabled the avoidance of high-temperature processing post-fabrication typically required in industrial thermistor production. The printed thermistors were tested at a controlled constant humidity between 15 and 50<sup>o</sup>C. Both materials demonstrated typical natural logarithmic responses with high linearity and sensitivity.<br> 2020-10-29T00:00:00Z Text Journal contribution 2134/13013807.v1 https://figshare.com/articles/journal_contribution/Ferrite-based_room_temperature_negative_temperature_coefficient_printed_thermistors/13013807 CC BY-NC-ND 4.0
institution	Loughborough University
collection	Figshare
topic	Artificial intelligence not elsewhere classified Electrical & Electronic Engineering Electrical and Electronic Engineering Communications Technologies Artificial Intelligence and Image Processing
spellingShingle	Artificial intelligence not elsewhere classified Electrical & Electronic Engineering Electrical and Electronic Engineering Communications Technologies Artificial Intelligence and Image Processing Jack McGhee Jagdeep Sagu Darren Southee Peter SA Evans Upul Wijayantha-Kahagala-Gamage Ferrite-based room temperature negative temperature coefficient printed thermistors
description	Two screen printing inks were developed for the low-temperature fabrication of printed and flexible thick film negative temperature coefficient (NTC) thermistors able to operate at room temperature. The first of the two screen printing inks developed utilised cobalt ferrite (CoFe2O4) as the temperature sensing material with the second ink incorporating manganese ferrite (MnFe2O4). These were then screen printed onto lithographically printed silver interdigitated electrodes with a 200-micron track and gap using a synthetic paper (Teslin) as the substrate. The inks required a 10-minute curing step at 80oC. Preannealing of the ferrite powders before ink formulation enabled the avoidance of high-temperature processing post-fabrication typically required in industrial thermistor production. The printed thermistors were tested at a controlled constant humidity between 15 and 50oC. Both materials demonstrated typical natural logarithmic responses with high linearity and sensitivity.
format	Default Article
author	Jack McGhee Jagdeep Sagu Darren Southee Peter SA Evans Upul Wijayantha-Kahagala-Gamage
author_facet	Jack McGhee Jagdeep Sagu Darren Southee Peter SA Evans Upul Wijayantha-Kahagala-Gamage
author_sort	Jack McGhee (6618125)
title	Ferrite-based room temperature negative temperature coefficient printed thermistors
title_short	Ferrite-based room temperature negative temperature coefficient printed thermistors
title_full	Ferrite-based room temperature negative temperature coefficient printed thermistors
title_fullStr	Ferrite-based room temperature negative temperature coefficient printed thermistors
title_full_unstemmed	Ferrite-based room temperature negative temperature coefficient printed thermistors
title_sort	ferrite-based room temperature negative temperature coefficient printed thermistors
publishDate	2020
url	https://hdl.handle.net/2134/13013807.v1
_version_	1796734051536601088

Ferrite-based room temperature negative temperature coefficient printed thermistors

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