Flexible and bio-compatible temperature sensors based on carbon nanotube composites

Ben-Shimon, Yahav; Ya’akobovitz, Assaf

doi:10.1016/j.measurement.2020.108889

Cited by 23 publications

(11 citation statements)

References 55 publications

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“…We used these formulae to propose an analytical and experimental methodology that yielded the interfacial characteristics via back-calculations, from a feasible, far-field DMA analysis of the biocomposite itself and demonstrated it on zigzag-shaped sutural interfaces. From a broader perspective, our approach can also be used to analyze the interfacial characteristics of advanced engineering materials, such as bioinspired composites, nanocomposites, and electromechanical devices [ 63 , 64 , 65 , 66 ].…”

Section: Discussionmentioning

confidence: 99%

Assessing the Interfacial Dynamic Modulus of Biological Composites

et al. 2021

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Biological composites (biocomposites) possess ultra-thin, irregular-shaped, energy dissipating interfacial regions that grant them crucial mechanical capabilities. Identifying the dynamic (viscoelastic) modulus of these interfacial regions is considered to be the key toward understanding the underlying structure–function relationships in various load-bearing biological materials including mollusk shells, arthropod cuticles, and plant parts. However, due to the submicron dimensions and the confined locations of these interfacial regions within the biocomposite, assessing their mechanical characteristics directly with experiments is nearly impossible. Here, we employ composite-mechanics modeling, analytical formulations, and numerical simulations to establish a theoretical framework that links the interfacial dynamic modulus of a biocomposite to the extrinsic characteristics of a larger-scale biocomposite segment. Accordingly, we introduce a methodology that enables back-calculating (via simple linear scaling) of the interfacial dynamic modulus of biocomposites from their far-field dynamic mechanical analysis. We demonstrate its usage on zigzag-shaped interfaces that are abundant in biocomposites. Our theoretical framework and methodological approach are applicable to the vast range of biocomposites in natural materials; its essence can be directly employed or generally adapted into analogous composite systems, such as architected nanocomposites, biomedical composites, and bioinspired materials.

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Section: Discussionmentioning

confidence: 99%

Assessing the Interfacial Dynamic Modulus of Biological Composites

et al. 2021

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“…The temperature coefficient of resistance (TCR) is a key measure of resistive T sensing device sensitivity. It is defined as the change in resistance when the temperature changes by 1 • C. Pure metal elements (Pt, Au, Cu) [76][77][78], metal oxide particles [79], carbon nanotube (CNT) polymer composites [80], and graphene [81] have all been used as sensitive materials in resistive T sensing apparatuses. Due to their temperature sensitivity, metals have been employed for T sensing for a long time.…”

Section: Developments In Wearable T Sensing Apparatusesmentioning

confidence: 99%

Revolution in Flexible Wearable Electronics for Temperature and Pressure Monitoring—A Review

2022

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In the last few decades, technology innovation has had a huge influence on our lives and well-being. Various factors of observing our physiological characteristics are taken into account. Wearable sensing tools are one of the most imperative sectors that are now trending and are expected to grow significantly in the coming days. Externally utilized tools connected to any human to assess physiological characteristics of interest are known as wearable sensors. Wearable sensors range in size from tiny to large tools that are physically affixed to the user and operate on wired or wireless terms. With increasing technological capabilities and a greater grasp of current research procedures, the usage of wearable sensors has a brighter future. In this review paper, the recent developments of two important types of wearable electronics apparatuses have been discussed for temperature and pressure sensing (Psensing) applications. Temperature sensing (Tsensing) is one of the most important physiological factors for determining human body temperature, with a focus on patients with long-term chronic conditions, normally healthy, unconscious, and injured patients receiving surgical treatment, as well as the health of medical personnel. Flexile Psensing devices are classified into three categories established on their transduction mechanisms: piezoresistive, capacitive, and piezoelectric. Many efforts have been made to enhance the characteristics of the flexible Psensing devices established on these mechanisms.

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“…Recently, the needs for monitoring various sensing parameters, including blood pressure, compositions within body fluids, wound temperature, and limb movement, etc., propose many sensing requirements for the bioelectronics. [68][69][70][71][72] For these demands, sensors of BISS need to possess multiple sensing modalities, combining strain sensors, [73][74][75][76] temperature sensors,, [77][78][79] optical elements, [80][81][82][83][84] and other electrochemical types. [85][86][87] The integration of those functions is based on the fact that the ideal sensitive unit in one channel can precisely reflect one specific change of its surrounding environment (sensitivity) without the interference of other modalities (specificity).…”

Section: Materials Requirements For Bissmentioning

confidence: 99%

Recent Progress in Bio‐Integrated Intelligent Sensing System

Liu

Zhang

Tao

2022

Advanced Intelligent Systems

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It is incontrovertible that the bioelectronic enabled bio‐integrated system is one of the most promising technologies in the upcoming decades. Driven by the great versatility of the emerging artificial intelligence, machine‐learning‐supported bio‐integrated intelligent sensing system (BISS) is capable of achieving data processing and intelligent recognition while conducting multimodal human‐centered sensing; such facilitated systems capitalize the benefits of both bioelectronics and supporting algorithm, enabling accurate physiological/somatosensory recognition at the cost of certain computing resources. Herein, an overview of recent progress in BISS is presented, with an emphasis on high‐tech applications enabled by innovations in combining flexible bioelectronic sensors with supporting algorithmic systems. The main applications can be divided into three categories, including implantable, skin‐mounted, and wearable BISS, which have different requirements for materials, fabrication methods, and algorithms, respectively. Advances in these areas open new avenues for employing BISS as future human–machine interfaces for personalized healthcare, human enhancement, as well as other broad applications.

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Flexible and bio-compatible temperature sensors based on carbon nanotube composites

Cited by 23 publications

References 55 publications

Assessing the Interfacial Dynamic Modulus of Biological Composites

Assessing the Interfacial Dynamic Modulus of Biological Composites

Revolution in Flexible Wearable Electronics for Temperature and Pressure Monitoring—A Review

Recent Progress in Bio‐Integrated Intelligent Sensing System

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