Proving the robustness of a PEDOT:PSS-based thermistor<i>via</i>functionalized graphene oxide–poly(vinylidene fluoride) composite encapsulation for food logistics

Maskey, Bijendra Bishow; Shrestha, Kiran; Sun, Junfeng; Park, Hyejin; Park, Jinhwa; Parajuli, Sajjan; Shrestha, Sagar; Jung, Younsu; Ramasundaram, Subramaniyan; Koirala, Gyan Raj; Cho, Gyoujin

doi:10.1039/d0ra00554a

Cited by 25 publications

(17 citation statements)

References 32 publications

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“…Further, their conductivity is tuneable, and this makes them attractive for sensing antenna. A few PEDOT:PSS composite based temperature sensors [47][48][49][50][51] have been reported recently, but these either do not have a suitable range of operation for biomedical or smart packaging applications or are not suitable to be used as sensing antennas due to poor electrical behavior. There is hardly any flexible and chipless printed temperature sensing antenna reported so far.…”

Section: State Of the Artmentioning

confidence: 99%

Printed Chipless Antenna as Flexible Temperature Sensor

Bhattacharjee

Nikbakhtnasrabadi

Dahiya

2021

IEEE Internet Things J.

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The ever-increasing number of devices on wearable and portable systems comes with challenges such as integration complexity, higher power requirements, and less user comfort. In this regard, the development of multifunctional devices could help immensely as they will provide the same functionalities with lesser number of devices. Herein, we present a dual-function flexible loop antenna printed on Polyvinyl Chloride (PVC) substrate. With a PEDOT:PSS section as part of the printed structure, the presented antenna can also serve as a temperature sensor by means of change in resistance. The antenna resonates at 1.2 GHz and 5.8 GHz frequencies. The ohmic resistance of the temperature sensing part decreases by ~70% when the temperature increases from 25⁰C to 90⁰C. The developed antenna was characterised using VNA in the same temperature range and the S11 magnitude was found to change by ~3.5 dB. The induced current was also measured in the GSM frequency range and sensitivity of ~1.2%/⁰C was observed for the sensing antenna. The flexible antenna was also evaluated in lateral and cross bending conditions and the response was found to be stable for the cross bending. Due to these unique features, the presented antenna sensor could play a vital role in the drive toward ubiquitous sensing through wearables, smart labels, and the internet of things (IoT).

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Section: State Of the Artmentioning

confidence: 99%

Printed Chipless Antenna as Flexible Temperature Sensor

Bhattacharjee

Nikbakhtnasrabadi

Dahiya

2021

IEEE Internet Things J.

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“…The performance of those thermistors followed the Steinhart-Hart equation and showed a good long-term stability. Recent literature also suggests the fabrication of polymer-based flexible NTC-thermistors [25], which can be cured at low temperatures; there is no need of high sintering temperatures (i.e., 1200-1300ºC) as occurs in thermistors based on metal oxides. Such thermistors offered a satisfactory response under high-humidity conditions, which was one of the main limitations of the previous similar flexible designs.…”

Section: E New Trendsmentioning

confidence: 99%

A Tutorial on Thermal Sensors in the 200th Anniversary of the Seebeck Effect

Reverter

2021

IEEE Sensors J.

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Two noteworthy events associated to the physics of thermal sensors were demonstrated and announced in 1821, exactly two hundred years ago. The first event was the Seebeck effect, which led to the development of thermocouples. The second was the study of the thermal dependence of the resistivity of pure metals, which led to the design of resistance temperature detectors (RTD). Sensors' science and technology has experienced remarkable advances in the last decades, but these two types of thermal sensors, whose physics were announced 200 years ago, are still nowadays the main sensor technology in many industrial applications that require the measurement of extreme temperatures. In such a 200 th anniversary, this tutorial aims to explain the operating principle, subtypes, input-output characteristic, limitations, and new trends under research of the four main types of thermal sensor: RTDs, thermistors, silicon sensors, and thermocouples. These are also compared with each other, highlighting the main advantages and disadvantages of each sensor technology.

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“…In the face of the constantly increasing special environments and special signals, flexible sensors have become an important pillar unit of the flexible electronics sector, and flexible temperature sensors are considered an indispensable link. [ 1–3 ] Over the past decades, a quick rise of flexible temperature sensors has participated in the fabrication of next‐generation smart electronics, such as food logistics for cold chain systems, [ 4,5 ] robotics for teleoperated systems, [ 6 ] battery management systems, and healthcare for body temperature measurements. [ 7,8 ] As the temperature monitoring process is extremely important for these application systems, the employed flexible temperature sensors must with high sensitivity and reliability detect the target signals…”

Section: Introductionmentioning

confidence: 99%

“…

electronics, such as food logistics for cold chain systems, [4,5] robotics for teleoperated systems, [6] battery management systems, and healthcare for body temperature measurements. [7,8] As the temperature monitoring process is extremely important for these application systems, the employed flexible temperature sensors must with high sensitivity and reliability detect the target signals.The sensitivity of the temperature sensors strongly depends on the temperature coefficient of resistance (TCR), which is defined as a critical parameter to analyze the temperature sensitivity of the materials.

…”

mentioning

confidence: 99%

“…electronics, such as food logistics for cold chain systems, [4,5] robotics for teleoperated systems, [6] battery management systems, and healthcare for body temperature measurements. [7,8] As the temperature monitoring process is extremely important for these application systems, the employed flexible temperature sensors must with high sensitivity and reliability detect the target signals.…”

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confidence: 99%

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Development of a Highly Sensitive and Stable Flexible Temperature Sensor Based on All‐Inorganic Mn–Co–Ni–O Thin Films

Song

Wang

Gao

et al. 2023

Adv Materials Inter

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Despite the fact that flexible temperature sensors, which can be mechanically deformed, are used for the fabrication of next‐generation smart electronics over the past few years, the improvement in their sensitivity and stability remains a major challenge. Along these lines, in this work, an all‐inorganic flexible temperature sensor consisting of MnCoNiO (MCNO) spinel structural ceramics film and a flexible 40 µm‐thick mica substrate is fabricated. By precisely controlling the production process, the pure spinel phase MCNO/mica films with low defect density can be obtained. In addition, the activation energy of the proposed flexible ceramic temperature sensor film remains stable in the natural bending state and at radii of curvature of 10, 15, and 20 mm, respectively, accordingly, B25/50 is relatively stable around the range of 3450–3550 K. Meanwhile, its sensitivity temperature coefficient of resistance value reaches −3.9% °C−1. More specifically, ΔB25/50 is less than 1.83%, 1.57%, and 1.32% after thermal shock, application of the bending cycle, and vibration, respectively. The superior performance of this all‐inorganic ceramic film is due to the excellent bonding between the film and the substrate. This work provides an alternative approach to exploit the development of the next‐generation high‐sensitivity flexible electronic devices.

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Proving the robustness of a PEDOT:PSS-based thermistorviafunctionalized graphene oxide–poly(vinylidene fluoride) composite encapsulation for food logistics

Abstract: We introduced a FGO–PVDF composite as an encapsulation layer to prove the reliability of PEDOT:PSS thermistors under high-humidity conditions to realize an NFC-enabled smart label for monitoring time-temperature history of a food item along the cold chain.

Cited by 25 publications

References 32 publications

Printed Chipless Antenna as Flexible Temperature Sensor

Printed Chipless Antenna as Flexible Temperature Sensor

A Tutorial on Thermal Sensors in the 200th Anniversary of the Seebeck Effect

Development of a Highly Sensitive and Stable Flexible Temperature Sensor Based on All‐Inorganic Mn–Co–Ni–O Thin Films

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