Flexible, Highly Sensitive, and Wearable Pressure and Strain Sensors with Graphene Porous Network Structure

Pang, Yu; Tian, He; Tao, Lu‐Qi; Li, Yuxing; Wang, Xue-Feng; Deng, Ning-Qin; Yang, Yi; Ren, Tian‐Ling

doi:10.1021/acsami.6b08172

Cited by 400 publications

(287 citation statements)

References 23 publications

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“…So, these types of sensors have been developed with techniques like screenprinting [59], spin-coating [60], where a separate membrane of enzymes like cholesterol esterase [59], cholesterol oxidase [61] had been immobilized on the sensing surface. Pressure [62,63] and strain [64,65] sensors are one of the most standardized applications of flexible sensors. Different kinds of piezoresistive and piezoelectric sensors have been developed till date to monitor various physiological parameters by using them as bandages, gloves, etc.…”

Section: Types Of Sensing Using Wearable Flexible Sensorsmentioning

confidence: 99%

Wearable Flexible Sensors: A Review

2017

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Abstract-The paper provides a review on some of the significant research work done on wearable flexible sensors (WFS). Sensors fabricated with flexible materials have been attached to a person along with the embedded system to monitor a parameter and transfer the significant data to the monitoring unit for further analyses. The use of wearable sensors has played a quite important role to monitor physiological parameters of a person to minimize any malfunctioning happening in the body. The paper categorizes the work according to the materials used for designing the system, the network protocols and different types of activities that were being monitored. The challenges faced by the current sensing systems and future opportunities for the wearable flexible sensors regarding its market values are also briefly explained in the paper.

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Section: Types Of Sensing Using Wearable Flexible Sensorsmentioning

confidence: 99%

Wearable Flexible Sensors: A Review

2017

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“…[25] Porous structures such as sponge and foam were also employed to improve the stretchability. [26][27][28] Figure 1d presents a printed pattern based on CNT-filled elastomer with porous structure. [26] The porous structure was induced by evaporating the added reverse micelles.…”

Section: Introductionmentioning

confidence: 99%

Nanomaterial‐Enabled Wearable Sensors for Healthcare

Yao

Swetha

Zhu

2017

Adv Healthcare Materials

435

296

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humidity level, and concentration of harmful gases, and airborne particulates can provide valuable information for the prediction, management, and treatment of chronic diseases. [4,5] In addition to the applications in wearable health monitoring, continuous tracking of daily and sports activities can offer an efficient way to assess the well-being and athletic performances. [6] In order to ensure a robust and conformal contact with the curvilinear, coarse, and dynamic surface of skin without impeding daily activities, the wearable sensor should have low modulus and high stretchability. The epidermis has a modulus of 140-600 kPa while the dermis has an even lower modulus of 2-80 kPa. [7] Skin itself can be stretched elastically up to 15% and with the help of wrinkles and creases, the overall stretchability can reach as high as 100% during daily motions. [8] In addition to good wearability, wearable sensors should be highly sensitive, lightweight, low-cost, and with low power consumption. To achieve these features, nanomaterials that are compliant, possessing larger surface area and exceptional material properties, and compatible with low-cost fabrication processes are widely employed as building blocks for developing wearable sensors.In this review, we start from a brief overview of nanomaterials, their related structural designs and fabrication processes (Section 2). Following that, recent advances of nanomaterialenabled wearable sensors including temperature, electrophysiological, strain, tactile, electrochemical, and other sensors will be summarized (Section 3). A survey on the integration of multiple sensors and other components into wearable systems will be given in Section 4. The application of nanomaterialenabled wearable sensors for healthcare including health monitoring, activity tracking, and electronic skin will be presented in Section 5. The challenges and opportunities will be discussed at the end. Nanomaterials, Structural Designs, and Fabrication ProcessesNanomaterials can be classified into two categories-top-down fabricated ones and bottom-up synthesized ones. [9] The focus of this review is on the wearable sensors based on bottom-up synthesized nanomaterials. Nanomaterials can be synthesized into various dimensions, from 0D such as metallic nanoparticles (NPs), to 1D such as carbon nanotubes (CNTs), and metallic nanowires (NWs), to 2D such as graphene and transition metal Highly sensitive wearable sensors that can be conformably attached to human skin or integrated with textiles to monitor the physiological parameters of human body or the surrounding environment have garnered tremendous interest. Owing to the large surface area and outstanding material properties, nanomaterials are promising building blocks for wearable sensors. Recent advances in the nanomaterial-enabled wearable sensors including temperature, electrophysiological, strain, tactile, electrochemical, and environmental sensors are presented in this review. Integration of multiple sensors for multimodal sensing and integration with...

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“…Recent progress on biomonitoring sensors for biophysical monitoring are reported, which include detecting a user's movement, strain, torsion, pressure, and additional biophysical outputs related to changes in movement—including speech detection, pulse detection, and blood pressure tracking . These sensors are often implemented to monitor mobility for physical recovery or overall fitness/wellness tracking .…”

Section: Introductionmentioning

confidence: 99%

Interfacial Phenomena of Advanced Composite Materials toward Wearable Platforms for Biological and Environmental Monitoring Sensors, Armor, and Soft Robotics

Horne

McLoughlin

Bury

et al. 2020

Adv Materials Inter

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With haptic and pressure sensor manufacturing in the US totaling $US 1.6 billion in annual revenue—with 2% annual projected growth from 2018 to 2023—and tactical and service clothing manufacturing in the US totaling $US 242.9 million in annual revenue, the potential of advanced wearables continues to grow. As many fields tend toward miniaturized technologies in the modern age, many recent developments have been made for wearable platforms. Within the broad area of wearable platforms, there are many specific applications to consider, such as motion sensing, biomarker detection, monitoring of environmental pollutants, haptic sensors, enhanced soft robotics, and improving the safeguarding capabilities of armor. For these applications, the interfacial phenomena occurring between the continuous and discrete phases within the composite material are responsible for the device's response and bulk properties. Understanding these phenomena at the composite interfaces of the system allows for finer tuning of morphological, electromechanical, and other bulk properties, as well as the optimization of the wearable's output—in terms of the applications targeted. Control over these advanced composite materials is paramount in personalized health‐care systems, advanced defense technologies, commercial wearables. Recent advances on composite interfaces for wearable platforms are discussed, along with trends and an outlook of the field.

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Flexible, Highly Sensitive, and Wearable Pressure and Strain Sensors with Graphene Porous Network Structure

Cited by 400 publications

References 23 publications

Wearable Flexible Sensors: A Review

Wearable Flexible Sensors: A Review

Nanomaterial‐Enabled Wearable Sensors for Healthcare

Interfacial Phenomena of Advanced Composite Materials toward Wearable Platforms for Biological and Environmental Monitoring Sensors, Armor, and Soft Robotics

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