Multi-network hydrogel-based stretchable, self-adhesive, and self-healing self-powered flexible sensors for multi-scale, dynamic and static strain/pressure sensing

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: unknown, P. 136035 - 136035

Published: Dec. 1, 2024

Language: Английский

---

Continuous Wet-Spinning Of Tpu Composite Fibers with Cnts Nanocomposites for Wearable Knitted Sensors

Published: Jan. 1, 2024

The integration of conductive materials into elastomeric fibers as the wearable and knittable sensor have attained extensive attention recently. However, intrinsic hydrophobicity various nanocomposites leads to formation aggregates in fibers, which profoundly affects their mechanical deformation, not enabling large-scale production. Herein, gallic acid@hexamethylene diamine (GAHD)-decorated carbon nanotubes-2,2-dihydroxymethylpropionic acid (CNTs-DMPA) @thermoplastic polyurethane (TPU)@MXene@poly (3, 4-ethylenedioxythiophene) (PEDOT)@AgNPs (GCTMP-Ag) composite are fabricated via a scalable wet-spinning technique. reasonable design CNTs enables GCTMP-Ag exhibit superior electrical properties with an excellent sensing performance (gauge factor =15257.25), rapid response (240 ms) within large deformation range (1-900%) outstanding transport. Moreover, they successfully knitted on knitting machine monitor comprehensive human-body movements. More significantly, these fabrics present remarkable stability under deformations, exceptional electromagnetic interference shielding, wonderful durability over 6000 cycles (at 160 % strain).

Language: Английский

---

Biobased, Degradable and Directional Porous Carboxymethyl Chitosan/Lignosulfonate Sodium Aerogel-Based Piezoresistive Pressure Sensor with Dual-Conductive Network for Human Motion Detection

Published: Jan. 1, 2024

The rapid growth of wearable electronics, healthcare monitoring, and human-computer interaction has sparked growing interest in flexible piezoresistive pressure sensors, which turn raised considerable concerns about the increasingly serious environmental pollution caused by electronic waste. Herein, a radial inward directional freezing-drying method was proposed to prepare biobased, degradable porous carboxymethyl chitosan/lignosulfonate sodium aerogel with dual-conductive network constructed carboxylated multiwalled carbon nanotubes (C-CNTs) MXene for sensor. Owing synergistic conductive C-CNTs as well structure, sensor exhibited high sensitivity (2.33 kPa-1 0-10 kPa, 1.04 10-31 0.53 31-53 kPa), fast response (response/recovery time 140/60 ms), excellent repeatability (2,000 loading-unloading cycles). Moreover, successfully applied human motion detection, healthy micro-expression identification, speech recognition. In addition, able be completely degraded within 70 h 1 M hydrochloric acid solution, beneficial not only environment protection but also recycling substances. Our findings conceivably stand out new strategy environmentally friendly high-performance will promote further development application electronics.

Language: Английский

---

Underwater Vibration Sensor to Enable Automated and Contactless Voice Recognition

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 16, 2024

Abstract Individuals suffering from voice disabilities have limited access to currently available automation technologies that operate through commands. To address this issue, an alternative recognition approach is essential without directly monitoring the audio signals generated vocal cord. In work, design of a chemically reactive and conductive sponge reported create underwater vibration sensor with fast response time high sensitivity, orthogonal modulation conductivity (40–2150 kΩ), water repellence (0°–154°) mechanical properties (0.32–2.63 MPa). This class porous sensors enables identification subtle waves at air–water interface extends its utility detecting variety locomotion (squatting, jumping, walking, etc.), as well automated using deep learning model direct contact human body. Overall, provides novel basis for remote interaction technologies, which finds use in medical diagnostics, human‐machine interfaces, communication systems.

Language: Английский

---

Compressible CNT Ink-Wrapped Thermoplastic Polyurethane Sponge for Piezoresistive Sensing and Solar Steam Generation

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Language: Английский

---