PVDF-TrFE-Based Stretchable Contact and Non-Contact Temperature Sensor for E-Skin Application

Marchiori, Bastien; Regal, Simon; Arango, Yanid; Delattre, Roger; Blayac, S.; Ramuz, Marc

doi:10.3390/s20030623

Cited by 27 publications

(19 citation statements)

References 35 publications

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“…The sensing layer protects the sensor array and converts tactile information into electrical signals [ 17 , 18 ]. Substrates must have outstanding flexibility and stretchability and be able to withstand conditions of extreme temperature, humidity, deformation, and twisting [ 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Review: Sensors for Biosignal/Health Monitoring in Electronic Skin

Lee

Kim

et al. 2021

Polymers

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Skin is the largest sensory organ and receives information from external stimuli. Human body signals have been monitored using wearable devices, which are gradually being replaced by electronic skin (E-skin). We assessed the basic technologies from two points of view: sensing mechanism and material. Firstly, E-skins were fabricated using a tactile sensor. Secondly, E-skin sensors were composed of an active component performing actual functions and a flexible component that served as a substrate. Based on the above fabrication processes, the technologies that need more development were introduced. All of these techniques, which achieve high performance in different ways, are covered briefly in this paper. We expect that patients’ quality of life can be improved by the application of E-skin devices, which represent an applied advanced technology for real-time bio- and health signal monitoring. The advanced E-skins are convenient and suitable to be applied in the fields of medicine, military and environmental monitoring.

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Section: Introductionmentioning

confidence: 99%

Review: Sensors for Biosignal/Health Monitoring in Electronic Skin

Lee

Kim

et al. 2021

Polymers

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“…Wearable, flexible, miniaturized, and portable electronics such as energy‐harvesting devices (nanogenerators; NGs), [ 1–4 ] biomedical devices, [ 5–8 ] portable/wearable sensors, [ 1,5,9–11 ] artificial skins, [ 12–15 ] electronic textiles, [ 16–20 ] active matrix flat‐panel displays, [ 21–23 ] and flexible memory devices [ 24,25 ] have attracted much attention in recent years due to their stretchability and foldability. Thus, there is a growing interest in the fabrication of flexible and functional materials to develop next‐generation technology.…”

Section: Introductionmentioning

confidence: 99%

3D Printing of Polyvinylidene Fluoride Based Piezoelectric Nanocomposites: An Overview

Köroğlu

Ayas

2021

Macro Materials & Eng

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Recently, polyvinylidene fluoride (PVDF) based nanocomposites have attracted much attention for next‐generation wearable applications such as promising piezoelectric energy harvesters (nanogenerators), energy storage devices, sensing devices, and biomedical devices due to their high flexibility, and high dielectric and piezoelectric properties. 3D printing technology, PVDF based piezoelectric nanocomposites, the studies based on 3D printing of PVDF based piezoelectric nanocomposites by inkjet printing and fused deposition modeling, and enhancements of energy harvesting and storage performance of nanocomposites by structural design are comprehensively overviewed here. An insight is provided into 3D printing techniques, structure and properties of PVDF based polymers, various nanofillers and production methods for nanocomposites, solutions to enhance β phase (crystallinity) of PVDF, and improvements of nanocomposites’ breakdown strength, discharged energy density, and piezoelectric power output by mentoring structural design.

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“…New sensors adaptable to the skin are currently being developed to obtain non-invasive thermal measurements in humans [22][23][24]. When an instrument is placed on the skin, the device alters the skin temperature, making technologies such as infrared thermography highly advantageous for temperature detection.…”

Section: Introductionmentioning

confidence: 99%

Heat flow, heat capacity and thermal resistance of localized surfaces of the human body using a new calorimetric sensor

Rivera

Socorro

Callicó

et al. 2021

J Therm Anal Calorim

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A non-invasive sensor equipped with a programmable thermostat has been developed to assess in vivo the heat flow transmitted by conduction from human skin to the sensor thermostat. This device enables the assessment of the thermal properties of a 2 × 2 cm2 skin surface with a thermal penetration depth of 3–4 mm. In this work, we report the thermal magnitudes recorded with this sensor in 6 different areas (temple, hand, abdomen, thigh, wrist and heel) of 6 healthy subjects of different genders and ages, which were measured under resting conditions. Heat flow and equivalent thermal resistance are proportionally related to each other and are highly variable in magnitude and different for each zone. The heat capacity is also different for each zone. The heat flow values varied from 362 ± 17 mW at the temple to 36 ± 12 mW at the heel for the same subject, when the sensor thermostat was set at 26 °C. The equivalent thermal resistance ranged from 23 ± 2 K W−1 in the volar area of the wrist to 52 ± 4 KW−1 in the inner thigh area. The heat capacity varies from 4.8 ± 0.4 J K−1 in the heel to 6.4 ± 0.2 J K−1 in the abdomen. These magnitudes were also assessed over a 2 × 1 cm2 second-degree burn scar in the volar area of the wrist. The scar area had 27.6 and 11.6% lower heat capacity and equivalent thermal resistance, respectively, allowing an increased heat flow in the injured area. This work is a preliminary study of the measurement capacity of this new instrument.

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PVDF-TrFE-Based Stretchable Contact and Non-Contact Temperature Sensor for E-Skin Application

Cited by 27 publications

References 35 publications

Review: Sensors for Biosignal/Health Monitoring in Electronic Skin

Review: Sensors for Biosignal/Health Monitoring in Electronic Skin

3D Printing of Polyvinylidene Fluoride Based Piezoelectric Nanocomposites: An Overview

Heat flow, heat capacity and thermal resistance of localized surfaces of the human body using a new calorimetric sensor

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