Soft and Stretchable Humidity‐Insensitive Thermoresistive Temperature Sensor with A Tensile Strain Modulated Sensitivity
Albeltagi, Ahmed; Tolvanen, Jarkko; Bhalerao, Sagar R.; Hannu, Jari (2024-01-02)
John Wiley & Sons
02.01.2024
A. Albeltagi, J. Tolvanen, S. R. Bhalerao, J. Hannu, Soft and Stretchable Humidity-Insensitive Thermoresistive Temperature Sensor with A Tensile Strain Modulated Sensitivity. Macromol. Mater. Eng. 2024, 309, 2300379. https://doi.org/10.1002/mame.202300379
https://creativecommons.org/licenses/by/4.0/
© 2024 The Authors. Macromolecular Materials and Engineering published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
© 2024 The Authors. Macromolecular Materials and Engineering published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202401161263
https://urn.fi/URN:NBN:fi:oulu-202401161263
Tiivistelmä
Abstract
Soft and stretchable electronics represents a high potential paradigm shift in field of electronics, for example, in applications related to solar cells, organic displays, electronic skin, and wearable sensors. In this work, a soft and stretchable humidity-insensitive thermoresistive sensor is developed using interdigitated electrodes made of silver-plated nylon fabric coated with silver-ink and a layer of poly(3,4-ethylenedioxythiophene)–poly(styrene sulfonate) (PEDOT: PSS) embedded into elastomer. The mechanical and thermoelectrical properties of the soft sensor are characterized and analyzed. The fabricated soft sensor provides a combination of linear temperature sensitivity of 0.46% °C−1 with an R2 of 0.986 from 30 to 55 °C at 0% uniaxial tensile strain. It also exhibits excellent stability in environmental humidity ranging from ≈30% RH to ≈80% RH. The linear sensitivity is improved to 1.49% °C−1 by applying a 40% pre-measurement stretch to the sensor. Due to its good temperature sensitivity (0.46 to 1.49% °C−1), excellent linearity (0.986), and high stretchability (≈125%), the soft and stretchable temperature sensor proves to be a very promising solution for wearable temperature sensing.
Soft and stretchable electronics represents a high potential paradigm shift in field of electronics, for example, in applications related to solar cells, organic displays, electronic skin, and wearable sensors. In this work, a soft and stretchable humidity-insensitive thermoresistive sensor is developed using interdigitated electrodes made of silver-plated nylon fabric coated with silver-ink and a layer of poly(3,4-ethylenedioxythiophene)–poly(styrene sulfonate) (PEDOT: PSS) embedded into elastomer. The mechanical and thermoelectrical properties of the soft sensor are characterized and analyzed. The fabricated soft sensor provides a combination of linear temperature sensitivity of 0.46% °C−1 with an R2 of 0.986 from 30 to 55 °C at 0% uniaxial tensile strain. It also exhibits excellent stability in environmental humidity ranging from ≈30% RH to ≈80% RH. The linear sensitivity is improved to 1.49% °C−1 by applying a 40% pre-measurement stretch to the sensor. Due to its good temperature sensitivity (0.46 to 1.49% °C−1), excellent linearity (0.986), and high stretchability (≈125%), the soft and stretchable temperature sensor proves to be a very promising solution for wearable temperature sensing.
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