Sodium alginate reinforced polyacrylamide/xanthan gum double network ionic hydrogels for stress sensing and self-powered wearable device applications

Carbohydrate Polymers, Год журнала: 2023, Номер 309, С. 120678 - 120678

Опубликована: Фев. 9, 2023

Язык: Английский

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Ultrastretchable, Self-Healing Conductive Hydrogel-Based Triboelectric Nanogenerators for Human–Computer Interaction

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(4), С. 5128 - 5138

Опубликована: Янв. 19, 2023

The rapid development of wearable electronic devices and virtual reality technology has revived interest in flexible sensing control devices. Here, we report an ionic hydrogel (PTSM) prepared from polypropylene amine (PAM), tannic acid (TA), sodium alginate (SA), MXene. Based on the multiple weak H-bonds, this exhibits excellent stretchability (strain >4600%), adhesion, self-healing. introduction MXene nanosheets endows sensor with a high gauge factor (GF) 6.6. Meanwhile, it also enables triboelectric nanogenerators (PTSM-TENGs) fabricated silicone rubber-encapsulated hydrogels to have energy harvesting efficiency, instantaneous output power density 54.24 mW/m2. We build glove-based human-computer interaction (HMI) system using PTSM-TENGs. multidimensional signal features PTSM-TENG are extracted analyzed by HMI system, functions gesture visualization robot hand realized. In addition, signals can be used for object recognition help machine learning techniques. glove based achieves classification five objects through contact, accuracy rate 98.7%. Therefore, strain sensors broad application prospects man-machine interface, intelligent systems, auxiliary other fields due their stretchable self-healing performance.

Язык: Английский

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Label-free electrochemical aptasensor based on gold nanoparticles/titanium carbide MXene for lead detection with its reduction peak as index signal

Advanced Composites and Hybrid Materials, Год журнала: 2023, Номер 6(2)

Опубликована: Март 18, 2023

Язык: Английский

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Skin-Inspired Ultra-Tough Supramolecular Multifunctional Hydrogel Electronic Skin for Human–Machine Interaction

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Апрель 13, 2023

Abstract Multifunctional supramolecular ultra-tough bionic e-skin with unique durability for human–machine interaction in complex scenarios still remains challenging. Herein, we develop a skin-inspired tunable mechanical properties by physical cross-linking salting-freezing-thawing method. The gelling agent ( β -Glycerophosphate sodium: Gp) induces the aggregation and binding of PVA molecular chains thereby toughens them (stress up to 5.79 MPa, toughness 13.96 MJ m −3 ). Notably, due self-assembly, hydrogels can be fully recycled reprocessed direct heating (100 °C few seconds), tensile strength maintained at about 100% after six recoveries. hydrogel integrates transparency (> 60%), super (up , bearing 1500 times its own weight), good antibacterial E. coli S. aureus ), UV protection (Filtration: 80%–90%), high electrical conductivity (4.72 S −1 anti-swelling recyclability. not only monitor daily physiological activities, but also used activities underwater message encryption/decryption. We it create complete finger joint rehabilitation system an interactive interface that dynamically presents user’s health status. Our multifunctional electronic skin will have profound impact on future new medical, interaction, VR/AR metaverse fields.

Язык: Английский

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Collagen-Based Organohydrogel Strain Sensor with Self-Healing and Adhesive Properties for Detecting Human Motion

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(9), С. 12350 - 12362

Опубликована: Фев. 24, 2023

Conductive hydrogels are ideal for flexible sensors, but it is still a challenge to produce such with combined toughness, self-adhesion, self-healing, anti-freezing, moisturizing, and biocompatibility properties. Herein, inspired by natural skin, highly stretchable, strain-sensitive, multi-environmental stable collagen-based conductive organohydrogel was constructed using collagen (Col), acrylic acid, dialdehyde carboxymethyl cellulose, 1,3-propylene glycol, AlCl3. The resulting exhibited excellent tensile (strain >800%), repeatable adhesion (>10 times), self-healing [self-healing efficiency (SHE) ≈ 100%], anti-freezing (-60 °C), moisturizing (>20 d), biocompatible This also possessed good electrical conductivity (σ = 3.4 S/m) strain-sensitive properties [GF (gauge factor) 13.65 the maximal strain of 400%]. Notably, had considerable low-temperature performance (SHE 88% at -24 °C) rapid underwater property 92%, time <20 min). type sensor could not only accurately continuously monitor large-scale motions human body provide an accurate response tiny motions. work proposes development strategy multifunctional multiple environmental stability provides potential research value construction biomimetic electronic skin.

Язык: Английский

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Strategies in the preparation of conductive polyvinyl alcohol hydrogels for applications in flexible strain sensors, flexible supercapacitors, and triboelectric nanogenerator sensors: an overview

Advanced Composites and Hybrid Materials, Год журнала: 2023, Номер 6(6)

Опубликована: Ноя. 8, 2023

Язык: Английский

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Multifunctional CeO2-coated pulp/cellulose nanofibers (CNFs) membrane for wastewater treatment: Effective oil/water separation, organic contaminants photodegradation, and anti-bioadhesion activity

Industrial Crops and Products, Год журнала: 2023, Номер 197, С. 116672 - 116672

Опубликована: Апрель 5, 2023

Язык: Английский

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Adaptive and Adjustable MXene/Reduced Graphene Oxide Hybrid Aerogel Composites Integrated with Phase-Change Material and Thermochromic Coating for Synchronous Visible/Infrared Camouflages

ACS Nano, Год журнала: 2023, Номер 17(7), С. 6875 - 6885

Опубликована: Март 30, 2023

Although single-function camouflage under infrared/visible bands has made great advances, it is still difficult for materials to cope with the synergy detection spanning both visible and infrared spectra adapt complex variable scenarios. Herein, a trilayer composite integrating thermal insulation, heat absorption, solar/electro-thermal conversions, thermochromism fabricated dual camouflages by combining anisotropic MXene/reduced graphene oxide hybrid aerogel n-octadecane phase change material in its bottom thermochromic coating on upper surface. Benefiting from synergetic heat-transfer suppression derived insulation of porous layer absorption phase-change layer, can serve as cloak hide target signatures images ambient surroundings during day jungle at night all scenes assist escaping visual surveillance virtue green appearance. For desert scenarios, spontaneously increase surface temperature via solar-thermal energy conversion, merging targets into high-temperature surroundings; meanwhile, vary color original yellow, enabling visually disappear sands hills. This work provides promising strategy designing adaptive adjustable integrated counter multiband complicated environments.

Язык: Английский

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Research progress of MXenes and layered double hydroxides for supercapacitors

Inorganic Chemistry Frontiers, Год журнала: 2023, Номер 10(15), С. 4358 - 4392

Опубликована: Янв. 1, 2023

In this study, the preparation methods of MXenes and layered dihydroxides (LDHs) are reviewed. addition, electrochemical performances for supercapacitors MXene/LDHs composites summarized in detail.

Язык: Английский

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Efficient electromagnetic wave absorption performances dominated by exchanged resonance of lightweight PC/Fe3O4@PDA hybrid nanocomposite

Chemical Engineering Journal, Год журнала: 2022, Номер 457, С. 141205 - 141205

Опубликована: Дек. 27, 2022

Язык: Английский

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