Silk fibroin-based hydrogels with low hysteresis, self-adhesion, and tunable ionic conductivity for wearable devices

International Journal of Biological Macromolecules, Год журнала: 2025, Номер 306, С. 141597 - 141597

Опубликована: Фев. 28, 2025

Язык: Английский

---

Rapidly self-healing, highly conductive, stretchable, body-attachable hydrogel sensor for soft electronics

Composites Communications, Год журнала: 2024, Номер 52, С. 102158 - 102158

Опубликована: Ноя. 13, 2024

Язык: Английский

---

Plant Template-Based Ultra-high Conductivity Multifunctional Silver Nanocomposite Transparent Hydrogel for Flexible Wearable Sensors

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Conductive hydrogels, widely recognized as flexible sensor materials for health monitoring, pose a research challenge in selecting suitable frameworks and designing multifunctional composites that balance conductivity, transparency, self-healing, mechanical properties. In this work, simple efficient plant-template method (corn husk) is used to generate textured hydrogel (PPA) with PEI PVA the transparent framework, without additional cross-linking agents. The resulting exhibits high conductivity (8.56 S/m), excellent transparency (94% @ 550 nm nontextured variant), remarkable stretchability (627.1%). Additionally, PPA self-healing capabilities, achieving maximum efficiency of 94.68%. To enhance AgNWs are applied surface using rod coating method, forming PPA@RCA 12.39 S/m. This improvement attributed interactions between silver-based nanomaterials (AgNWs, AgNPs), Li+, PEI/PVA framework PPA@RCA. wearable strain based on features gauge factor 3.35 instantaneous response characteristics (response time 195 ms), exhibiting exceptional sensitivity repeatability across diverse ranges external stimuli. Therefore, ultrahigh-conductive hydrogel, produced through strategy, demonstrates significant potential applications tablet capacitive pens, writing devices, smart wearables, monitoring.

Язык: Английский

---

A stretchable and self-healing poly(vinyl alcohol)/polyacrylamide/polyaniline multi-network hydrogel for flexible strain sensors

Materials Today Communications, Год журнала: 2025, Номер unknown, С. 111976 - 111976

Опубликована: Фев. 1, 2025

Язык: Английский

---

Efficient Fabrication of Highly Elastic, Self-Adhesive MXene-Doped Lignin-Based Conductive Hydrogels for Flexible Strain Sensing Applications

ACS Applied Electronic Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

Язык: Английский

---

Five-Cavity Resonance Inspired, rGO Nano-Sheet Reinforced, Multi-Site Voice Synergetic Detection Hydrogel Sensors with Diverse Self-Adhesion and Robust Wireless Transmissibility

Gels, Год журнала: 2025, Номер 11(4), С. 233 - 233

Опубликована: Март 23, 2025

The practical application of flexible sensors in sound detection is significantly hindered by challenges such as information isolation, fragmentation, and low fidelity. To address these challenges, this work developed a composite hydrogel via one-pot method, employing polyvinyl alcohol (PVA) the first network, polyacrylic acid (PAA) second two-dimensional nanomaterials—reduced graphene oxide (rGO)—generated through redox reaction polydopamine (PDA) (GO) conductive fillers. uniformly distributed rGO within forms an efficient endowing material with high sensitivity (GF = 0.64), excellent conductivity (8.15 S m−1), rapid response time (350 ms), outstanding stability. synergistic interaction between PDA PAA modulates hydrogel’s adhesion (0.89 kPa), enabling conformal attachment to skin surfaces. designed rGO@PVA-PAA hydrogel-based sensor effectively monitors vibrations across diverse frequencies originating from five vocal cavities (head, nasal, oral, laryngeal, thoracic cavities) during singing. Integrated multi-position synchronization Bluetooth wireless sensing technologies, system achieves coordinated monitoring multiple cavities. Furthermore, demonstrates versatility detecting physiological signals, including electrocardiograms, subtle vibrations, multi-scale body movements, highlighting its broad applicability biomedical motion-sensing applications.

Язык: Английский

---

Anti-freezing and long-term stabilized photonic-ionic organogels for high sensitive wearable motion sensors

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162474 - 162474

Опубликована: Апрель 1, 2025

Язык: Английский

---

Self-Adhesive Wearable Strain Sensors Based on Transparent, Tough, Antibacterial, Self-Healing Polymeric Eutectogels

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 20, 2025

Язык: Английский

---

Design of Highly Stretchable, Self‐Adhesive Ionic Conductive Hydrogels for Wearable Strain Sensors

Advanced Sensor Research, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Abstract Conductive hydrogels (CHs) have received numerous attentions for potential applications in flexible electronics. However, the construction of high‐performance CHs with high stretchability, favorable electrical conductivity, and reversible adhesiveness simultaneously still remains a great challenge. Herein, an ionic CH above characteristics is proposed via introducing phytic acid (PA) into semi‐interpenetrating cross‐linked network poly(acrylamide‐co‐N‐(hydroxymethyl) acrylamide) chitosan hydrogels. The synergy hydrogen bonds electrostatic interactions endows obtained hydrogel stretchability (1131%), toughness (88.32 kJ·m −3 ), satisfactory (25.78 kPa to wood). presence PA enables composite exhibit conductivity. Impressively, resultant can be assembled wearable strain sensor present sensitivity 1.32 wide response range (0–1131%), rapid time (340 ms), excellent cyclic stability. More importantly, prepared stain precisely recognize complicated human movements physiological activities realize information encryption, making this promising candidate preparing

Язык: Английский

---

Synergistic Enhancement of Hole–Bridge Structure and Molecular‐Crowding Effect in Multifunctional Eutectic Hydrogel Strain/Pressure Sensor for Personal Rehabilitation Training

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 27, 2025

Abstract Given the electrical signal transduction capability and excellent biocompatibility, conductive hydrogels are regarded as ideal candidates for high‐performance strain/pressure sensors applied in personalized medicine. However, there challenges concurrent attainment of flexible hydrogel‐based with remarkable conductivity, sensitivity, reliable stability. Herein, a synergistic strategy based on hole–bridge structure molecular‐crowding effect is proposed to fabricate multifunctional sensor. As‐prepared eutectic hydrogel displays comprehensive performances impressive conductivity (2.81 S m −1 ), boosted mechanical robustness (a tensile strength 2.95 MPa), environmental tolerance (≈79.8% water retention at 50 °C 20 days; frost resistance = −45.3 °C). Notably, hydrogel‐derived stretchable sensor effective antibacterial ability exhibits enhanced sensitivity (gauge factor 4.49) across wide linear range, supporting monitoring joint movement electrocardiographic signals, along on‐demand photothermal treatment. As demonstration, employment efficiently conveying information high‐fidelity handwriting recognition investigated assistance machine learning. This innovative holds high promise future applications wearable‐smart devices integrated wireless transmission modules, exhibiting great potential personal rehabilitation training healthcare monitoring.

Язык: Английский

---