Temperature Sensors Manufactured from Edible Materials Intended for Oral Cavity Operation
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Published:2023-07-17
Issue:1
Volume:11
Page:221-231
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ISSN:2288-6206
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Container-title:International Journal of Precision Engineering and Manufacturing-Green Technology
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language:en
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Short-container-title:Int. J. of Precis. Eng. and Manuf.-Green Tech.
Author:
Stojanović Goran M.ORCID, Radovanović MilanORCID, Kojić SanjaORCID, Milić LazarORCID, Simić MitarORCID, Kojić TijanaORCID, Duval Raphael GeorgesORCID, Vukmirović JelenaORCID, Petrović BojanORCID
Abstract
AbstractFollowing the circular economy concept, all areas of science, including electronics, require individual approach. The green electronics approach implies processing natural based materials for development of electronic components even for single use, so that waste does not exist. This paper describes the production of thermistors from 3 different types of edible materials, their testing in laboratory conditions, as well as the application for measuring the temperature in the human oral cavity. To make the thermistor, three types of natural materials were used (carrageenan, polyvinyl alcohol and apple pomace-based). After fabrication, materials were poured into molds. Aluminium foil contacts were placed so that the electrical characterization of the materials could be performed. Several parameters were measured: resistance (R), impedance (Z) and the phase angle (θ) as a function of frequency. In order to determine whether the thermistors have a positive or negative temperature coefficient and to determine their sensitivity, measurements were conducted at three different temperatures: 25 ℃ (room temperature), 37 ℃ (human body temperature), and 50 ℃. The thermistors demonstrated negative temperature coefficient behaviour. Additionally, it was demonstrated that the apple pomace-based thermistor can successfully measure healthy volunteer's temperature.
Graphical Abstract
Funder
European Union’s Horizon 2020 research and innovation programme
Publisher
Springer Science and Business Media LLC
Subject
Management of Technology and Innovation,Industrial and Manufacturing Engineering,Mechanical Engineering,General Materials Science,Renewable Energy, Sustainability and the Environment
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