Extremely-low electrical-hysteresis hydrogels for multifunctional wearable sensors and osmotic power generators

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160971 - 160971

Published: Feb. 1, 2025

Language: Английский

---

Nanocomposite Multi-Cross-Linked Hydrogels with High Strength, High Stretchability and High Conductivity for Multifunctional Wearable Sensors

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Conductive hydrogels have gained significant attention in advanced fields like wearable devices and soft robotics. However, the concurrent fabrication of sensors based on with both optimal mechanical properties high conductivity remains a challenge due to inherent brittleness conventional absence conductive pathways within them. Addressing this challenge, study successfully developed nanocomposite multicross-linked hydrogel strength, stretchability conductivity. The structure comprises chemically cross-linked polyacrylamide (PAM) network entangled gelatin chains induced by Hofmeister effect. Multiple hydrogen bonds between gelatin, PAM, water molecules, carboxylated multiwalled carbon nanotubes (c-MWCNTs), chitosan (CS) enhance hydrogel's crosslink density stability. exhibits remarkable performance, tensile strength 0.83 MPa, over 1558%, toughness 5.04 MJ/m3, alongside excellent fatigue resistance self-healing capabilities. also shows (5.09 S/m), sensitivity (GF = 1.91), durability (over 100 cycles), enabled formed c-MWCNTs inorganic salt electrolytes. prepared strain show wide range applicability reliability field human motion monitoring, where large movements joint bending (including elbow, wrist knee) small such as smiling swallowing can be accurately monitored. Moreover, it transmit information analyzing electrical signal changes, suggesting innovative potential for communication applications. Thus, holds great promise health monitoring remote communication.

Language: Английский

---

Stretchable, Self-Healable, and Durable Conductive Elastomer Derived from a Rationally Designed Covalently Cross-Linked Network

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(2), P. 4165 - 4175

Published: Jan. 7, 2025

Silver nanowire (Ag NW)-based elastic conductors have been considered a promising candidate for key stretchable electrodes in wearable devices. However, the weak interface interaction of Ag NWs and substrates leads to poor durability electronic For everyday usage, an additional self-healing ability is required resist scratching damage. Therefore, robust NW-based possessing stretchability, self-healing, stability are highly desirable challenging. Here, we present universal tailoring strategy that introduces thiols onto dynamically cross-linked substrate surface. The surface thiol groups strongly interact with through Ag–S bonds, forming stable conductive layer on substrate. At elevated temperatures, partially embedded buffer formed release concentrated stress. As result, conductor displays combination good conductivity, high stretchability (>1000%), efficient capability (>95%), remarkable stability. Besides, combining properties mentioned above suitable fabricating sensitive durable strain sensor against cyclic strain. presented can be versatile effective route generating other thiol-rich covalently elastomers dynamic disulfide bonds.

Language: Английский

---

High‐Fidelity, High‐Conductivity and Multifunctional PEDOT:PSS Hydrogel for Efficient Electromagnetic Interference Shielding and Ultrafast Response Electrochromic Applications

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hydrogel are promising for applications in electromagnetic interference (EMI) shielding, energy storage, and electrochromic (EC) devices. However, challenges such as low conductivity at reduced solid content, limited charge poor mechanical properties, structural distortion during solvent treatment limit their high-performance applications. To address these issues, a high-fidelity, high-conductivity multifunctional PEDOT:PSS is developed by an ice crystal-assisted skeleton stacking stepwise strategy, achieving ultrahigh of 87,249 S m-1 5.8 wt% content. The also features storage capacity 35.66 mC cm-2 capacitance density 587.6 mF cm-2. Additionally, demonstrates exceptional EMI shielding effectiveness, 81.2 dB, exhibits specific surface efficiency 30,769.23 dB cm2 g-1. Notably, maintains high stability even after undergoing various harsh conditions. Using femtosecond laser direct writing, the highly stable all-solid-state EC reflective displays with ultrafast response (<0.3 s) superior durability.

Language: Английский

---

Low mechanical-hysteresis soft materials: materials, design, and applications

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Low mechanical hysteresis is the key to dynamic response and stability of soft materials. This review aims provide an overview current research on low mechanical-hysteresis materials, with a focus design applications.

Language: Английский

---

Printed force sensor with printable conductive material and printing technique

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163542 - 163542

Published: May 1, 2025

Language: Английский

---

Supramolecular Luminescent Copper-Nanocluster-Based Dough with Excellent Electrical Conductivity Sensing Properties

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(43), P. 59327 - 59335

Published: Oct. 18, 2024

In recent years, the rapid advancement of flexible conductive materials has significantly increased demand for dough that offer high flexibility and conductivity diverse applications. Here, we developed a flexible, stretchable, self-healing utilizing hydrogen-bonding interactions between glutathione-stabilized copper nanoclusters (GSH-Cu NCs) poly(acrylic acid) (PAA). The can be kneaded, readily reshaped, further processed to create bulk arbitrary form factors. incorporation PAA not only preserved vibrant blue emission GSH-Cu NCs but also enhanced their electrical stretchability. stretched up 25 times its initial length achieves complete in short time. Moreover, automatically repair physical damage return levels after healing. Surprisingly, reach as 2.97 S/m, which is relatively superior compared conventional materials. This study presents serves highly sensitive strain sensor, capable effectively monitoring human movement across broad range strains.

Language: Английский

---

Application of wearable sensors in crop phenotyping and microenvironment monitoring

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 505, P. 159059 - 159059

Published: Dec. 28, 2024

Language: Английский

---