Internet-of-Things-Based Multiple-Sensor Monitoring System for Soil Information Diagnosis Using a Smartphone DOI Creative Commons
Yin Wu, Zenan Yang, Wenbo Liu

et al.

Micromachines, Journal Year: 2023, Volume and Issue: 14(7), P. 1395 - 1395

Published: July 8, 2023

The rise of Internet Things (IoT) technology has moved the digital world in a new direction and is considered third wave information industry. To meet current growing demand for food, agricultural industry should adopt updated technologies smart agriculture based on IoT which will strongly enable farmers to reduce waste increase productivity. This research presents novel system application soil measurements, consists multiple sensors (temperature moisture), micro-processor, microcomputer, cloud platform, mobile phone application. wireless can collect transmit real time with high speed, while app uses platform as monitoring center. A low power consumption specified hardware software, modular supply time-saving algorithm are adopted improve energy effectiveness nodes. Meanwhile, prediction strategy was explored deep Q network (DQN) reinforcement learning algorithm. Following weighted combination bidirectional long short-term memory, online sequential extreme machine, parallel machine learning, DQN Bi-OS-P model obtained. proposed data acquisition achieved long-term stable reliable collection time-series equal intervals provided an accurate dataset precise diagnosis information. RMSE, MAE, MAPE were all reduced, R2 improved by 0.1% when compared other methods. successfully implemented experimentally showed that error between value displayed its exact moment no more than 3 s, proving applications be effectively used real-time quality conditions multi-sensing Things.

Language: Английский

Ionogels: Preparation, Properties and Applications DOI
Chang‐Cun Yan, Weizheng Li, Ziyang Liu

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 31, 2023

Abstract Ionogels, composed of ionic liquids and supporting networks, possess a plethora exceptional properties, including nonvolatility, remarkable thermal electrochemical stability, elevated mechanical strength, as well outstanding conductivity. Based on these extraordinary characteristics, ionogels have found extensive applications in diverse fields encompassing functional materials, sensors, soft electronics, solid electrolytes, biomedicine. In recent years, witnessed significant advancements emerged highly popular subject matter. Consequently, this review provides comprehensive overview the latest progress made realm ionogels. The preparation methods are initially introduced following concise introduction. Subsequently, properties ionogels, high low temperature resistance, conductivity, stimuli‐response self‐healing recyclability their structure‐property relationships, comprehensively discussed. Moreover, utilization skins, adhesions other domains also elaborated upon extensively. Finally, after succinct summary, challenges prospects regarding future development thoroughly deliberated.

Language: Английский

Citations

101
Photoswitchable and Reversible Fluorescent Eutectogels for Conformal Information Encryption DOI
Changchun Li, Jize Liu, Xiaoyan Qiu

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(46)

Published: Oct. 4, 2023

Smart fluorescent materials that can respond to environmental stimuli are of great importance in the fields information encryption and anti-counterfeiting. However, traditional usually face problems such as lack tunable fluorescence insufficient surface-adaptive adhesion, hindering their practical applications. Herein, inspired by glowing sucker octopus, we present a novel strategy fabricate reversible eutectogel with high transparency, adhesive self-healing performance for conformal Using anthracene luminescent unit, exhibits photoswitchable therefore be reversibly written/erased patterns non-contact stimulation. Additionally, different from mechanically irreversible adhesion via glue, adhere various irregular substrates over wide temperature range (-20 65 °C) conformally deform more than 1000 times without peeling off. Furthermore, exploiting transparency good stretchability eutectogel, dual achieved under UV stretching conditions further improve security level. This study should provide promising future development advanced intelligent anti-counterfeiting materials.

Language: Английский

Citations

87
Evolutionary Reinforcement of Polymer Networks: A Stepwise‐Enhanced Strategy for Ultrarobust Eutectogels DOI
Ning Tang, Yujia Jiang,

Kailun Wei

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(6)

Published: Nov. 8, 2023

Abstract Gel materials are appealing due to their diverse applications in biomedicine, soft electronics, sensors, and actuators. Nevertheless, the existing synthetic gels often plagued by feeble network structures inherent defects associated with solvents, which compromise mechanical load‐bearing capacity cast persistent doubts about reliability. Herein, combined attractive deep eutectic solvent (DES), a stepwise‐enhanced strategy is presented fabricate ultrarobust eutectogels. It focuses on continuous modulation optimization of polymer networks through complementary annealing exchange processes, drives progressive increase both quantity mass interconnected chains at microscopic scale, hence contributing evolutionary enhancement structure. The resultant eutectogel exhibits superb properties, including record‐breaking strength (31.8 MPa), toughness (76.0 MJ m −3 ), Young's modulus (25.6 together exceptional resistance ability tear crack propagation. Moreover, this able be further programmed photolithography situ create patterned for imparting specific functionalities. Enhanced its broad applicability various DES combinations, poised serve as crucial template methodology future development robust gels.

Language: Английский

Citations

60
A Coenzyme‐Based Deep Eutectic Supramolecular Polymer Bioadhesive DOI Open Access
Chunyan Cui, Yage Sun,

Xiongfeng Nie

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(49)

Published: July 19, 2023

Abstract α‐lipoic acid (LA), a coenzyme, has proved to have excellent antioxidant and antibacterial activities; however, its intrinsic hydrophobicity metastability of polyLA remains major challenge for the application LA‐based bulk materials in biomedical field. Herein, self‐stabilized deep eutectic supramolecular polymer ( LA‐DESP) adhesive is created by one‐step heating mixture LA sodium α‐lipoate (LA‐Na) (S‐, R‐isomer, racemate) without introducing any exogenous stabilizing molecules. The underlying effect LA/LA‐Na unveiled be originated from multiple hydrogen bonds between polyLA‐Na, which not only prevent depolymerization but also lower melting point LA‐DESP near body pathological temperature. Copolymerization LA‐Na slows down dissociation thus affording sustainable release bioactive small molecules satisfactory functions. Also, exhibits fast tough adhesion diverse substrates, including wet tissues, relying on situ curing property rich carboxyl groups. explored as tissue sealant, can well replace surgical suture enhance wound healing skin incision rat model. unprecedented will provide new strategy development bioadhesives.

Language: Английский

Citations

52
A Mechanically Robust, Self‐Healing, and Adhesive Biomimetic Camouflage Ionic Conductor for Aquatic Environments DOI
Yue Gong, Yu Li, Xiaolin Lyu

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(47)

Published: July 14, 2023

Abstract Flexible conductive materials capable of simulating transparent ocean organisms have garnered interest in underwater motion monitoring and covert communication applications. However, the creation flexible conductors that possess mechanical robustness, adhesion, self‐healing properties remains a challenge. Herein, hydrophobic interaction is combined with electrostatic to obtain solvent‐free poly(ionic liquid) elastomer (PILE) fabricated using soft acrylate monomers ionic liquids. The synergy interactions can eliminate hydration water molecules underwater, giving PILE adjustable fracture strength, good elasticity, high stretchability, toughness, fatigue resistance, ability, conductivity. As result, iontronic sensor generated from achieve multifunctional sensing human detection sensitivity stability. In particular, also transmit information through stretching, pressing, non‐contact modes, demonstrating its huge potential devices.

Language: Английский

Citations

49
Multifunctional conductive hydrogels for wearable sensors and supercapacitors DOI Creative Commons
Quancai Li, Bin Tian, Guilin Tang

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(6), P. 3589 - 3600

Published: Jan. 1, 2024

Conductive hydrogels, which combine the adhesive properties of polydopamine with conductivity and low melting point features deep eutectic solvents, are ideal green materials for bioelectrodes, flexible sensors, supercapacitors.

Language: Английский

Citations

38
Compliant Iontronic Triboelectric Gels with Phase-Locked Structure Enabled by Competitive Hydrogen Bonding DOI Creative Commons
Guoli Du, Yuzheng Shao, Bin Luo

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: April 9, 2024

Rapid advancements in flexible electronics technology propel soft tactile sensing devices toward high-level biointegration, even attaining perception capabilities surpassing human skin. However, the inherent mechanical mismatch resulting from deficient biomimetic properties of materials poses a challenge to application wearable human-machine interaction. Inspired by innate biphasic structure subcutaneous tissue, this study discloses skin-compliant iontronic triboelectric gel via phase separation induced competitive hydrogen bonding. Solvent-nonsolvent interactions are used construct bonding systems trigger separation, and soft-hard alternating phase-locked confers with Young's modulus (6.8-281.9 kPa) high tensile (880%) compatible The abundance reactive hydroxyl groups gives excellent tribopositive self-adhesive (peel strength > 70 N m

Language: Английский

Citations

32
High tensile properties, wide temperature tolerance, and DLP-printable eutectogels for microarrays wearable strain sensors DOI
Xiaomin Zhang,

Youjie Rong,

Huijie Li

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 149004 - 149004

Published: Jan. 23, 2024

Language: Английский

Citations

24
Janus Hydrophobic Structural Gel with Asymmetric Adhesion in Air/Underwater for Reliable Mechanosensing DOI
Rong Zhou, Yong Jin,

Wenhua Zeng

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(33)

Published: March 29, 2024

Abstract Reliable interfacial bonding is an essential guarantee that flexible electronics can output realistic signals, especially for underwater scenes. However, conventional self‐adhesive materials usually suffer from adhesion failure, conflict between and cohesion, as well adverse effects of isotropous residue, greatly limiting their applications in electronics. Herein, a Janus hydrophobic structural gel (HSG) with asymmetric fabricated by “grafting one twig on another” approach (in situ constructing anti‐adhesive the top gel). The layer long C18 aliphatic chains achieves reliable (interfacial toughness exceeds 80 J m −2 ) assistance high mobility polymer chains, multiple interactions, effective removal liquid. anti‐adhesion containing poly(ionic liquid) more robust due to electrostatic ion‐dipole ensuring mechanical strength integral HSG. Such heterostructure avoids common nonessential facilitating operation. intrinsic hydrophobicity HSG also prevents water erosion, achieving sensing. As result, assembled sensor based stably monitor human motions wirelessly transmit information, exhibiting enormous potential wearable

Language: Английский

Citations

23
Conductive Hyaluronic Acid/Deep Eutectic Solvent Composite Hydrogel as a Wound Dressing for Promoting Skin Burn Healing Under Electrical Stimulation DOI
Yu Tian, Fei Jiang, Haijiao Xie

et al.

Advanced Healthcare Materials, Journal Year: 2024, Volume and Issue: 13(17)

Published: April 3, 2024

Abstract Burns can cause severe damage to the skin due bacterial infection and inflammation. Although conductive hydrogels as electroactive burn‐wound dressings achieve remarkable effects on accelerating wound healing, issues such imbalance between their high conductivity mechanical properties, easy dehydration, low transparency must be addressed. Herein, a double‐network eutectogel is fabricated by integrating polymerizable deep eutectic solvents (PDESs)including acrylamide/choline chloride/glycerol (acrylamide‐polymerization crosslink) thiolated hyaluronic acid (disulfide‐bonding crosslink). The introduction of PDESs provides with (up 0.25 S·m −1 ) strength (tensile strain 59–77%) simulating those natural human skin, well satisfactory tissue adhesiveness, self‐healing ability, antibacterial properties. When combined exogenous electrical stimulation, exhibits ability reduce inflammation, stimulate cell proliferation migration, promote collagen deposition angiogenesis, facilitate remodeling. This shows great potential dressing for healing major burn wounds.

Language: Английский

Citations

22