V<sub>2</sub>O<sub>5</sub> Nanowires-Based Flexible Temperature Sensor

Neto, João; Dahiya, Abhishek Singh; Kumaresan, Yogeenth; Shakthivel, Dhayalan; Dahiya, Ravinder

doi:10.1109/fleps51544.2021.9469760

Cited by 4 publications

(4 citation statements)

References 34 publications

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“…The metallic materials are expensive while composite materials showed poor response time and large hysteresis and also have an issue with the formation of stable dispersion. Alternatively, 1dimensional (1D) metal-oxide materials like V2O5 nanowires are excellent candidates for temperature sensor due to high crystallinity, ease of synthesis, offers high surface area to volume ratio and has smaller activation energy [28][29][30]. The V2O5 nanowires can also form a stable dispersion in water thus avoiding the use of toxic solvents.…”

Section: Introductionmentioning

confidence: 99%

V₂O₅ nanowires coated yarn based temperature sensor for smart textiles

Khandelwal

Dahiya

2022

2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)

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Smart textiles can sense different stimuli such as pressure, temperature etc., to allow users to react and adapt. Such features are accomplished through integration of various fiber-based sensors and electronic components in textile structures. Yarn is 1-dimensional structure which can be modified to behave as a sensor and can further be integrated with other sensors or electronics to form smart textile by techniques like weaving, knitting, and braiding. In this work, a flexible temperature sensor is reported by modifying a stainlesssteel yarn with V2O5 nanowires. The current profile and temperature sensing performance is measured from 5 to 50 °C. The device exhibits sensitivity of 3.7 %/°C and response time of ∼9s. The present work demonstrates the potential of using yarn as a flexible temperature sensor that can be used to realize smart textile for wearable and healthcare applications.

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Section: Introductionmentioning

confidence: 99%

V₂O₅ nanowires coated yarn based temperature sensor for smart textiles

Khandelwal

Dahiya

2022

2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)

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“…Another popular material is metal oxide semiconductors because of their high sensitivities and excellent stable temperature sensing characteristics. However, it is challenging to assemble NWs based on these materials at well-defined locations with good reproducibility and uniformity [136]. Taking this problem into account, Neto et al reported an e-skin system composed of V 2 O 5 NW-based artificial thermoreceptors (ATRs) [134] (Figure 5c).…”

Section: Thermoresistive Temperature Sensorsmentioning

confidence: 99%

Recent Advances in Nanowire-Based Wearable Physical Sensors

Gu,

Shen,

Tian

et al. 2023

Biosensors

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Wearable electronics is a technology that closely integrates electronic devices with the human body or clothing, which can realize human–computer interaction, health monitoring, smart medical, and other functions. Wearable physical sensors are an important part of wearable electronics. They can sense various physical signals from the human body or the surrounding environment and convert them into electrical signals for processing and analysis. Nanowires (NW) have unique properties such as a high surface-to-volume ratio, high flexibility, high carrier mobility, a tunable bandgap, a large piezoresistive coefficient, and a strong light–matter interaction. They are one of the ideal candidates for the fabrication of wearable physical sensors with high sensitivity, fast response, and low power consumption. In this review, we summarize recent advances in various types of NW-based wearable physical sensors, specifically including mechanical, photoelectric, temperature, and multifunctional sensors. The discussion revolves around the structural design, sensing mechanisms, manufacture, and practical applications of these sensors, highlighting the positive role that NWs play in the sensing process. Finally, we present the conclusions with perspectives on current challenges and future opportunities in this field.

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“…Another type of thermosensetive material is metal oxide such as Vanadium Oxides (VOx). In [28], a flexible temperature sensor based on vanadium pentoxide (V2O5) nanowires (NWs) was demonstrated. However, [28] uses photolithography for fabrication, which is expensive for mass production.…”

Section: Introductionmentioning

confidence: 99%

“…In [28], a flexible temperature sensor based on vanadium pentoxide (V2O5) nanowires (NWs) was demonstrated. However, [28] uses photolithography for fabrication, which is expensive for mass production. In [16], F. Liao et al have demonstrated a Vanadium Dioxide (VO2)based temperature sensor with good sensitivity but has highmechanical instability.…”

Section: Introductionmentioning

confidence: 99%

Remote Monitoring of Skin Temperature Through a Wristband Employing a Printed VO Sensor

et al. 2023

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The need for highly sensitive, environmentally stable, mechanically flexible, and low-cost temperature sensors for on-body measurements has been increasing with the wide adoption of personal Healthcare-Internet-of-Things (H-IoT) devices. Printed electronics (PE) is a good platform for such sensors because it enables the realization of flexible devices through simple and rapid methods at a relatively low cost. However, previously reported printed temperature sensors suffer from poor sensitivity and/or environmental instability. In this paper, we report a custom Tungsten (W)-doped Vanadium Dioxide (VO2) ink-based screen-printed temperature sensor having the highest Temperature-Coefficient-of-Resistance (TCR) of 2.78%•°C -1 with a resolution of 0.1°C between 30°C and 40°C. To protect it from environmental effects, a fluoropolymer-based passivation layer is added for accurate temperature readings even in 90% relative humidity. The sensor is printed on a flexible substrate and shows minimal deterioration in performance over 1000 bending cycles. For wearability and remote monitoring, the sensor is integrated with a custom Bluetooth Low Energy (BLE) wireless readout in the form of a wristband. The BLE readout comprises an ultrathin and flexible patch antenna optimized for both BLE bandwidth and human wearability. It demonstrates a minimal SAR value of only 0.068W/kg, making it safe to wear. Despite the antenna's thin structure (0.004λ), it has a gain of 1.65dBi, enabling an excellent communication range. The proposed wristband is tested on ten volunteers and under daily activities, which shows promising results with a maximum error of 0.16°C with reference to those of a commercial thermometer.

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V₂O₅ Nanowires-Based Flexible Temperature Sensor

Cited by 4 publications

References 34 publications

V₂O₅ nanowires coated yarn based temperature sensor for smart textiles

V₂O₅ nanowires coated yarn based temperature sensor for smart textiles

Recent Advances in Nanowire-Based Wearable Physical Sensors

Remote Monitoring of Skin Temperature Through a Wristband Employing a Printed VO Sensor

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V2O5 Nanowires-Based Flexible Temperature Sensor

Cited by 4 publications

References 34 publications

V2O5 nanowires coated yarn based temperature sensor for smart textiles

V2O5 nanowires coated yarn based temperature sensor for smart textiles

Recent Advances in Nanowire-Based Wearable Physical Sensors

Remote Monitoring of Skin Temperature Through a Wristband Employing a Printed VO Sensor

Contact Info

Product

Resources

About

V₂O₅ Nanowires-Based Flexible Temperature Sensor

V₂O₅ nanowires coated yarn based temperature sensor for smart textiles

V₂O₅ nanowires coated yarn based temperature sensor for smart textiles