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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Recent Progress in Smart Polymeric Gel‐Based Information Storage for Anti‐Counterfeiting

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(41)

Published: June 10, 2022

Abstract Information security protection has a tremendous impact on human life, social stability and national security, leading to the rapid development of anti‐counterfeiting materials related techniques. However, traditional stored information hard or dry media is often static lacks functions, which makes it challenging deal with increasing powerful counterfeiting technologies. Modified intelligent polymeric gels exhibit color changes shape morphing under external stimuli, give them great potential for applications in storage. This paper provides an overview latest progress gel‐based storage relation counterfeiting. Following brief introduction materials, preparation methods adjustable colors (e.g., chemical physical colors) various encryption/decryption modes involving dimensions diverse are outlined. Finally, challenges prospects based smart discussed.

Language: Английский

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A Urease‐Containing Fluorescent Hydrogel for Transient Information Storage

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 60(7), P. 3640 - 3646

Published: Nov. 1, 2020

The improper handling of decrypted information can lead to the leakage confidential data. Thus, there is increasing interest in development self-erasing Herein, we report a urease-containing fluorescent hydrogel for multistage security protection. Information be input into hydrogel, which based on protonated 4-(N,N-dimethylaminoethylene) amino-N-allyl-1,8-naphthalimide (DEAN-H+ ) and doped with urease, using metal ions, such as Zn2+ that coordinate DEAN. Upon exposure urea, urease produces NH3 , reduces fluorescence hydrogel. In presence metal-coordinated decreases more slowly than alone, revealing information. displayed then automatically erased within few minutes. This work opens up new insights designing fabricating storage materials.

Language: Английский

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Multiple-Stimuli-Responsive and Cellulose Conductive Ionic Hydrogel for Smart Wearable Devices and Thermal Actuators

ACS Applied Materials & Interfaces, Journal Year: 2020, Volume and Issue: 13(1), P. 1353 - 1366

Published: Dec. 22, 2020

Stimulus-responsive hydrogels, such as conductive hydrogels and thermoresponsive have been explored extensively are considered promising candidates for smart materials wearable devices artificial muscles. However, most of the existing studies on stimulus-responsive mainly focused their single property not multistimulus-responsive or multifunction properties. Although some works involved multifunctionality, prepared were incompatible. In this work, a multifunctional hydrogel system (carboxymethyl cellulose/poly acrylic-acrylamide) with good elasticity, superior flexibility, stable conductivity was prepared. The only showed excellent human motion detection physiological signal response but also possessed ability to respond environmental temperature changes. By integrating poly(N-isopropylacrylamide) (PNIPAM) form bilayer hydrogel, functioned two kinds actuators owing different degrees swelling shrinking under thermal stimuli. Furthermore, thermochromic properties each layer in endowed "smart" feature, display conceal information. Therefore, has prospects material applications, ionic skin, info-window, soft robotics.

Language: Английский

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Ionic Conductive Organohydrogels with Dynamic Pattern Behavior and Multi‐Environmental Stability

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(24)

Published: April 2, 2021

Abstract Multi‐environmental tolerant hydrogels have received significant attention and are promising for application as smart materials in multiple environments (e.g., water, oil, freezing, dry). However, the macroscopic change anti‐swelling mechanisms of organohydrogels different solvents their corresponding applications not been adequately harnessed. Herein, an ionic organohydrogel with excellent mechanical properties unique behaviors (information identification encryption) sensing is prepared. The prepared shows obvious transparent owing to microphase separation poor swelling suitable solvents, can be treated a dynamic information memory device recording encrypting information. Furthermore, interaction between water dimethylsulfoxide (DMSO), demonstrates prominent freezing resistance (−90 20 °C) moisturizing retention (76% after 15 days). In addition, conductive hydrogel exhibits outstanding human motion detection physiological signal response displays stable performance dry conditions, oil or environments. It envisioned that design strategies mechanistic investigation may bio‐sensors information‐recognition platforms harsh

Language: Английский

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Mimicking Color-Changing Organisms to Enable the Multicolors and Multifunctions of Smart Fluorescent Polymeric Hydrogels

Accounts of Chemical Research, Journal Year: 2022, Volume and Issue: 55(16), P. 2291 - 2303

Published: July 28, 2022

ConspectusFluorescent polymer hydrogels (FPHs) are of significant interest for diverse emerging applications such as visualized sensing, smart display, camouflaging skins, soft actuators/robots, because they can synergize the features classic fluorescent polymers and hydrogels. With great efforts in past decades, major challenge this field has been believed to be not whether a given FPH prepared but how fabricate robust FPHs with multicolor tunability multifunctional synergy. Such materials will conceptually minimize contribution passive mass size final system, holding potential facilitate multiple applications. To end, one promising way is learn from Nature that superb capability forge delicate or sometimes beyond-imagination materials. Chameleons cephalopods serve typical examples, which famous only skin color adaptability under changing environmental demands, also synergistic body gesture changes communicate, warn, camouflage, etc. Biological studies revealed their structural color-changing capacity derives different types chromatophores rational multilayer arrangement under-skin tissues. Besides, ability heterogeneously integrate tissues disparate functions into topology-optimized architectures led various performances. natural strategies, if replicated implemented artificial systems, would significantly benefit advance development applications.In Account, we summarizes key advances mainly achieved by our groups. We start introducing unique hierarchical structures reptiles, followed an in-depth discussion on integration bioinspiration man-made design makes it possible largely expand fluorescence range almost cover whole visible spectrum. Then, closely mimic behaviors chameleons cephalopods, further develop efficient strategies introduce supramolecular interactions integrating other functions, producing number polymeric hydrogel systems. These find many frontier applications, including bioinspired color/shape switchable systems on-demand patterning capacities displaying information encryption, well chemosensors important food analytes. expect presented Account promote better understanding discoloration nature,

Language: Английский

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Double Lock Label Based on Thermosensitive Polymer Hydrogels for Information Camouflage and Multilevel Encryption

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(16)

Published: Feb. 1, 2022

Developing extra safety encryption technologies to prevent information leakage and combat fakes is in high demand but challenging. Herein, we propose a "double lock" strategy based on both lower critical solution temperature (LCST) upper (UCST) polymer hydrogels for camouflage multilevel encryption. Two types of were synthesized by the method random copolymerization. The number -CO-NH2 groups network structure changed enthalpic or entropic thermo-responsive hydrogels, ultimately precisely controlled their phase transition temperature. crosslink density governs diffusion kinetics, resulting difference time color change. combination multiple LCST UCST one label realized dynamic identification dimensions This work highly interesting fields encryption, anti-counterfeiting, smart responsive materials.

Language: Английский

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Bio‐inspired Structure‐editing Fluorescent Hydrogel Actuators for Environment‐interactive Information Encryption

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(23)

Published: March 16, 2023

Abstract Many living organisms have the superb structure‐editing capacity for better adaptation in dynamic environments over course of their life cycle. However, it's still challenging to replicate such natural into artificial hydrogel actuating systems enhancing environment‐interactive functions. Herein, we learn from metamorphosis development glowing octopus construct proof‐of‐concept fluorescent actuators with life‐like by developing a universal stepwise inside‐out growth strategy. These could perform origami‐like 3D shape deformation and also enable postnatal new structures adapt additional states different visual information delivery using environment keys (e.g., temperature, pH). This study opens previously unidentified‐avenues bio‐inspired actuators/robotics extends potential uses encryption.

Language: Английский

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Thermally trainable dual network hydrogels

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 22, 2023

Abstract Inspired by biological systems, trainable responsive materials have received burgeoning research interests for future adaptive and intelligent material systems. However, the to date typically cannot perform active work, training allows only one direction of functionality change. Here, we demonstrate thermally hydrogel systems consisting two thermoresponsive polymers, where volumetric response system upon phase transitions enhances or decreases through a process above certain threshold temperature. Positive negative induced deformations can be achieved, depending on network design. Importantly, softening, stiffening, toughening achieved process. We actuators capable performing increased work implementing an initially impossible task. The reported dual hydrogels provide new strategy that leveraged bio-inspired soft such as artificial muscles robotics.

Language: Английский

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Transparent, self-adhesive, highly environmental stable, and water-resistant ionogel enabled reliable strain/temperature sensors and underwater communicators

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 471, P. 144674 - 144674

Published: July 12, 2023

Language: Английский

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