Technology Roadmap for Flexible Sensors

ACS Nano, Journal Year: 2023, Volume and Issue: 17(6), P. 5211 - 5295

Published: March 9, 2023

Humans rely increasingly on sensors to address grand challenges and improve quality of life in the era digitalization big data. For ubiquitous sensing, flexible are developed overcome limitations conventional rigid counterparts. Despite rapid advancement bench-side research over last decade, market adoption remains limited. To ease expedite their deployment, here, we identify bottlenecks hindering maturation propose promising solutions. We first analyze achieving satisfactory sensing performance for real-world applications then summarize issues compatible sensor-biology interfaces, followed by brief discussions powering connecting sensor networks. Issues en route commercialization sustainable growth sector also analyzed, highlighting environmental concerns emphasizing nontechnical such as business, regulatory, ethical considerations. Additionally, look at future intelligent sensors. In proposing a comprehensive roadmap, hope steer efforts towards common goals guide coordinated development strategies from disparate communities. Through collaborative efforts, scientific breakthroughs can be made sooner capitalized betterment humanity.

Language: Английский

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Skin-Interfaced Wearable Sweat Sensors for Precision Medicine

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(8), P. 5049 - 5138

Published: March 27, 2023

Wearable sensors hold great potential in empowering personalized health monitoring, predictive analytics, and timely intervention toward healthcare. Advances flexible electronics, materials science, electrochemistry have spurred the development of wearable sweat that enable continuous noninvasive screening analytes indicative status. Existing major challenges include: improving extraction sensing capabilities, form factor device for minimal discomfort reliable measurements when worn, understanding clinical value biomarker discovery. This review provides a comprehensive outlines state-of-the-art technologies research strive to bridge these gaps. The physiology sweat, materials, biosensing mechanisms advances, approaches induction sampling are introduced. Additionally, design considerations system-level devices, spanning from strategies prolonged efficient powering wearables, discussed. Furthermore, applications, data commercialization efforts, challenges, prospects precision medicine

Language: Английский

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Design principles for strong and tough hydrogels

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(6), P. 380 - 398

Published: May 7, 2024

Language: Английский

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3D-printed PEDOT:PSS for soft robotics

Nature Reviews Materials, Journal Year: 2023, Volume and Issue: 8(9), P. 604 - 622

Published: Aug. 24, 2023

Language: Английский

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Hydrogels for Flexible Electronics

ACS Nano, Journal Year: 2023, Volume and Issue: 17(11), P. 9681 - 9693

Published: May 18, 2023

Hydrogels have emerged as promising materials for flexible electronics due to their unique properties, such high water content, softness, and biocompatibility. In this perspective, we provide an overview of the development hydrogels electronics, with a focus on three key aspects: mechanical interfacial adhesion, conductivity. We discuss principles designing high-performance present representative examples potential applications in field healthcare. Despite significant progress, several challenges remain, including improving antifatigue capability, enhancing balancing content wet environments. Additionally, highlight importance considering hydrogel-cell interactions dynamic properties future research. Looking ahead, is promising, exciting opportunities horizon, but continued investment research necessary overcome remaining challenges.

Language: Английский

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Deep-Learning Enabled Active Biomimetic Multifunctional Hydrogel Electronic Skin

ACS Nano, Journal Year: 2023, Volume and Issue: 17(16), P. 16160 - 16173

Published: July 31, 2023

There is huge demand for recreating human skin with the functions of epidermis and dermis interactions physical world. Herein, a biomimetic, ultrasensitive, multifunctional hydrogel-based electronic (BHES) was proposed. Its function mimicked using poly(ethylene terephthalate) nanoscale wrinkles, enabling accurate identification materials through capabilities to gain/lose electrons during contact electrification. Internal mechanoreceptor by interdigital silver electrodes stick–slip sensing identify textures/roughness. The patterned microcone hydrogel, achieving pressure sensors high sensitivity (17.32 mV/Pa), large range (20–5000 Pa), low detection limit, fast response (10 ms)/recovery time (17 ms). Assisted deep learning, this BHES achieved accuracy minimized interference in identifying (95.00% 10 materials) textures (97.20% four roughness cases). By integrating signal acquisition/processing circuits, wearable drone control system demonstrated three-degree-of-freedom movement enormous potentials soft robots, self-powered human–machine interaction interfaces digital twins.

Language: Английский

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Bioadhesive polymer semiconductors and transistors for intimate biointerfaces

Science, Journal Year: 2023, Volume and Issue: 381(6658), P. 686 - 693

Published: Aug. 10, 2023

The use of bioelectronic devices relies on direct contact with soft biotissues. For transistor-type devices, the semiconductors that need to have interfacing biotissues for effective signal transduction do not adhere well wet tissues, thereby limiting stability and conformability at interface. We report a bioadhesive polymer semiconductor through double-network structure formed by brush redox-active semiconducting polymer. resulting film can form rapid strong adhesion tissue surfaces together high charge-carrier mobility ~1 square centimeter per volt second, stretchability, good biocompatibility. Further fabrication fully transistor sensor enabled us produce high-quality stable electrophysiological recordings an isolated rat heart in vivo muscles.

Language: Английский

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An Integrally Formed Janus Hydrogel for Robust Wet‐Tissue Adhesive and Anti‐Postoperative Adhesion

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(23)

Published: March 16, 2023

Facile fabrication of asymmetrically adhesive hydrogel with robust wet tissue adhesion simultaneously effective anti-postoperative still remains a great challenge. In this work, an integrally formed Janus is facilely fabricated in one step by controlling the interfacial distribution free carboxyl groups on two sides hydrogels. At lower stirring speed, generated bigger sized emulsion droplets mainly occupy top surface hydrogel, which effectively hinders exposition surface, driving them to be more distributed bottom ultimately resulting poor but various even underwater. The difference strength achieves as high 20 times between surfaces. vivo rabbit experiment outcomes clearly validate that firmly adheres stomach defect, and other opposite can efficiently address postoperative problem. Besides, exhibits superior mechanical toughness conductivity has been used highly strain sensor real-time monitor beating heart vivo. This simple yet strategy provides much feasible approach for creating hydrogels bioadhesives.

Language: Английский

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Incorporating Wireless Strategies to Wearable Devices Enabled by a Photocurable Hydrogel for Monitoring Pressure Information

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(29)

Published: March 31, 2023

Advances in emerging technologies for wireless collection and the timely analysis of various information captured by wearable devices are growing interest. Herein, a crosslinked ionic hydrogel prepared facile photocuring process is proposed, which allows to be further incorporated into two integrated systems pressure monitoring applications. The device exhibits simplified structure effectively sharing functional layers, rather than conventional separate combinations, offering salient performance iontronic sensing electrochromic properties simultaneously quantify visualize pressure. developed smart patch system demonstrated monitor physiological signals real-time utilizing user interface remote portable equipment with Bluetooth protocol on-site displays. Moreover, passive based on magnetic coupling effect designed, can operate free from battery acquire multiple information. It envisioned that strategies would hold enormous potential flexible electronics, versatile platforms, on-body networks.

Language: Английский

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Water‐Resistant Conductive Gels toward Underwater Wearable Sensing

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(42)

Published: March 1, 2023

Abstract Conductive gels are developing vigorously as superior wearable sensing materials due to their intrinsic conductivity, softness, stretchability, and biocompatibility, showing a great potential in many aspects of lives. However, compared wide application on land, it is significant yet rather challenging for traditional conductive realize under water. The swelling the loss components aqueous environment, resulted from diffusion across interface, lead structural instability performance decline. Fortunately, efforts devoted improving water resistance employing them field underwater recent years, some exciting achievements obtained, which significance promoting safety efficiency activities. there no review thoroughly summarize gels. This presents brief overview representative design strategies water‐resistant diversified applications sensors. Finally, ongoing challenges further also discussed along with recommendations future.

Language: Английский

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