Skin Hydration Sensor for Customizable Electronic Textiles

Yokus, Murat A.; Daniele, Michael A.

doi:10.1557/adv.2016.540

Cited by 10 publications

(12 citation statements)

References 16 publications

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“…Nevertheless, despite the large use of these procedures, the related measurement accuracy is significantly influenced by various effects such as by the variations of some physiological and environmental parameters. Other monitoring systems use a capacitive principle [33,34]: the stratum corneum is essentially a dielectric medium and its capacitance may change with the distribution of water in the skin, which directly affects the electrical field penetration into skin. In all of these types of systems, the measurement depth depends on the geometrical factors of the measurement probe or sensing element (SE).…”

Section: Rationale Of the Work And Review Of State-of-the-art Methodsmentioning

confidence: 99%

Feasibility of a Wearable Reflectometric System for Sensing Skin Hydration

Schiavoni

Monti

Piuzzi

et al. 2020

Sensors

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One of the major goals of Health 4.0 is to offer personalized care to patients, also through real-time, remote monitoring of their biomedical parameters. In this regard, wearable monitoring systems are crucial to deliver continuous appropriate care. For some biomedical parameters, there are a number of well established systems that offer adequate solutions for real-time, continuous patient monitoring. On the other hand, monitoring skin hydration still remains a challenging task. The continuous monitoring of this physiological parameter is extremely important in several contexts, for example for athletes, sick people, workers in hostile environments or for the elderly. State-of-the-art systems, however, exhibit some limitations, especially related with the possibility of continuous, real-time monitoring. Starting from these considerations, in this work, the feasibility of an innovative time-domain reflectometry (TDR)-based wearable, skin hydration sensing system for real-time, continuous monitoring of skin hydration level was investigated. The applicability of the proposed system was demonstrated, first, through experimental tests on reference substances, then, directly on human skin. The obtained results demonstrate the TDR technique and the proposed system holds unexplored potential for the aforementioned purposes.

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Section: Rationale Of the Work And Review Of State-of-the-art Methodsmentioning

confidence: 99%

Feasibility of a Wearable Reflectometric System for Sensing Skin Hydration

Schiavoni

Monti

Piuzzi

et al. 2020

Sensors

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“…[392] It is an important concern for designing the fabric/textile-based wearable devices or soft robotics for human-machine interfaces. To precisely monitoring the skin hydration, Yokus et al proposed a design of a capacitive hydration sensor for integration with textile electronics (Figure 21a), [393] capable of monitoring the moisture microenvironment between robotic fabric/ textile and human body for improving human perception and feeling.…”

Section: Skin Affinity Of Fabric/textilementioning

confidence: 99%

Section: Integration Of Wearable Sensors Networkmentioning

confidence: 99%

Functional Fibers and Fabrics for Soft Robotics, Wearables, and Human–Robot Interface

2020

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Fiber that has been known for thousands of years for textile engineering, is a kind of thin 1D material with large length-diameter ratio and softness. Fiber can be further processed into 1D or 3D yarns and 2D or 3D fabrics and can be subjected to wellestablished textile manufacturing techniques, such as dyeing, twisting, sewing, knitting, weaving, braiding, etc. [1] As commercially available material, fabric has been widely used for clothing, bedding, or furniture. Such wide-adoption demonstrates fabrics/textiles to be important and adaptable as daily useable material due to their merits of protection, breathability, comfort, and durability. [2] In recent years, novel smart responsive functions are desirable to be implemented on fibers and fabrics for seamless integrations of actuators, sensors, power sources, etc., to realize the robotic fibers/fabric-based manipulators and human-robot interfaces. These emerging responsive fibers/ fabrics are desirable to offer programmable functions, actuations, perception and capable of building an intuitive and dynamic collaborative scenarios with human, promising in enabling applications such as remote operation, human motion assistance, human perception, health monitoring and biomedical detection and therapy. [3][4][5] It is an attractive concept that the future human-robot interfaces could be embodied in familiar forms for humans such as textiles or clothes. Compared with the polymeric and elastomeric soft robotics, [6][7][8][9] fibers and fabrics are advantageous in applications of soft robotics and wearables for human. The devices could be programmable to have accurate designs in configuration and high performance by traditional manufacturing processes of textile, applying twist to transform fibers into coils, yarns with hierarchical structures, which could be further fabricated into fabrics or textiles by sewing, weaving, knitting, etc., techniques (Figure 1), guaranteeing good wearability, skin affinity, washability, and durability, which are intriguing and necessary for friendly robotics interactions with human.Soft robotics include three main components of actuators, sensors, and control modules with power sources. [10,11] Of which, actuators, sensors and power sources all could be designed in the form of fibers or fabrics, rendering facile assembly, and integration by interlocking. [12] Common actuations can be Soft robotics inspired by the movement of living organisms, with excellent adaptability and accuracy for accomplishing tasks, are highly desirable for efficient operations and safe interactions with human. With the emerging wearable electronics, higher tactility and skin affinity are pursued for safe and user-friendly human-robot interactions. Fabrics interlocked by fibers perform traditional static functions such as warming, protection, and fashion. Recently, dynamic fibers and fabrics are favorable to deliver active stimulus responses such as sensing and actuating abilities for soft-robots and wearables. First, the responsive mechanisms of fiber/fabric actu...

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“…To measure the hydration level in a quantitative way, several techniques based on optical spectroscopic, electromagnetic or electrochemical measurements have been proposed [ 156 , 157 , 158 , 159 ] (see Table 6 ). Hydration sensors are commonly integrated in stretchable epidermal sensors [ 156 , 157 , 160 ] and wristbands [ 155 , 158 ], but they have also been successfully designed as patches and headbands [ 155 , 158 , 161 ], and even integrated in smart textiles [ 162 ].…”

Section: Sensors: Definition and Taxonomymentioning

confidence: 99%

Sensors for Context-Aware Smart Healthcare: A Security Perspective

Batista

Moncusi

López-Aguilar³

et al. 2021

Sensors

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The advances in the miniaturisation of electronic devices and the deployment of cheaper and faster data networks have propelled environments augmented with contextual and real-time information, such as smart homes and smart cities. These context-aware environments have opened the door to numerous opportunities for providing added-value, accurate and personalised services to citizens. In particular, smart healthcare, regarded as the natural evolution of electronic health and mobile health, contributes to enhance medical services and people’s welfare, while shortening waiting times and decreasing healthcare expenditure. However, the large number, variety and complexity of devices and systems involved in smart health systems involve a number of challenging considerations to be considered, particularly from security and privacy perspectives. To this aim, this article provides a thorough technical review on the deployment of secure smart health services, ranging from the very collection of sensors data (either related to the medical conditions of individuals or to their immediate context), the transmission of these data through wireless communication networks, to the final storage and analysis of such information in the appropriate health information systems. As a result, we provide practitioners with a comprehensive overview of the existing vulnerabilities and solutions in the technical side of smart healthcare.

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Skin Hydration Sensor for Customizable Electronic Textiles

Cited by 10 publications

References 16 publications

Feasibility of a Wearable Reflectometric System for Sensing Skin Hydration

Feasibility of a Wearable Reflectometric System for Sensing Skin Hydration

Functional Fibers and Fabrics for Soft Robotics, Wearables, and Human–Robot Interface

Sensors for Context-Aware Smart Healthcare: A Security Perspective

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