AI-Aided Gait Analysis with a Wearable Device Featuring a Hydrogel Sensor DOI Creative Commons
Saima Hasan,

Brent G. D’auria,

M. A. Parvez Mahmud

и другие.

Sensors, Год журнала: 2024, Номер 24(22), С. 7370 - 7370

Опубликована: Ноя. 19, 2024

Wearable devices have revolutionized real-time health monitoring, yet challenges persist in enhancing their flexibility, weight, and accuracy. This paper presents the development of a wearable device employing conductive polyacrylamide-lithium chloride-MXene (PLM) hydrogel sensor, an electronic circuit, artificial intelligence (AI) for gait monitoring. The PLM sensor includes tribo-negative polydimethylsiloxane (PDMS) tribo-positive polyurethane (PU) layers, exhibiting extraordinary stretchability (317% strain) durability (1000 cycles) while consistently delivering stable electrical signals. weighs just 23 g is strategically affixed to knee brace, harnessing mechanical energy generated during motion which converted into These signals are digitized then analyzed using one-dimensional (1D) convolutional neural network (CNN), achieving impressive accuracy 100% classification four distinct patterns: standing, walking, jogging, running. demonstrates potential lightweight energy-efficient sensing combined with AI analysis advanced biomechanical monitoring sports healthcare applications.

Язык: Английский

Batch Reactor Design and Conception at Laboratory Scale for Solid-State Anaerobic Digestion: Practical Comparison Between 3D-Printed Digesters and Conventional Methods DOI Creative Commons
Arnaud Coutu,

Franco Otaola,

L. André

и другие.

Fermentation, Год журнала: 2025, Номер 11(1), С. 41 - 41

Опубликована: Янв. 18, 2025

Solid-state anaerobic digestion (SS-AD) is a promising technology for treating organic waste and producing renewable energy. This study explores the feasibility of using 3D printing to rapidly design cost-effective laboratory-scale digesters optimization experiments. Batch reactors were designed fused deposition modeling (FDM) with polylactic acid (PLA) stereolithography (SLA) High Temp V2 resin. PLA had negligible impact on methane yields, while raw SLA resin positively influenced methanogenic potential, likely due residual isopropanol used in post-processing, causing 19% increase CH4 yield. The performance 3D-printed was compared that conventionally machined PMMA reactor cattle manure as substrate, showing comparable yields process stability. Three-dimensional technologies have demonstrated remarkable efficiency designing digesters, 70% cost reduction an 80% time conventional by plastics processing, maintaining biogas production. FDM shown they are not suitable these uses. demonstrates potential additive manufacturing accelerate SS-AD research development. However, care must be taken material selection post-processing avoid introducing experimental bias.

Язык: Английский

Процитировано

0
Innovative integration of machine learning and colorimetry for precise potential of hydrogen monitoring in printed hydrogel sensors DOI Creative Commons
Abdelrahman Sakr, Ahmed Elshamy, Haider Butt

и другие.

Engineering Applications of Artificial Intelligence, Год журнала: 2025, Номер 146, С. 110293 - 110293

Опубликована: Фев. 18, 2025

Язык: Английский

Процитировано

0
Multifunctional Liquid Metal-Based Nanocomposite Hydrogel with High Conductivity, Antibacterial and Adhesive Properties for Wearable Electronics DOI
Fang Liu, Zehua Chen, Zulin Zhang

и другие.

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

Опубликована: Апрель 7, 2025

Язык: Английский

Процитировано

0
Biomass-derived CMC-reinforced zwitterionic organohydrogel for wearable strain sensors: Achieving superior stretchability, adhesion, and anti-freezing performance DOI
Hien Chi Ngo, Kiok Kwon, Seunghan Shin

и другие.

Carbohydrate Polymers, Год журнала: 2025, Номер unknown, С. 123605 - 123605

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Chitosan-Based Hydrogel Functionalized with Fe(II) Phthalocyanine for Butylated Hydroxyanisole Determination DOI

Guorong Sun,

Wang Sun,

Junyan Liu

и другие.

Inorganic Chemistry, Год журнала: 2024, Номер 63(37), С. 17263 - 17273

Опубликована: Сен. 2, 2024

The synthesis of functional electrode sensing materials is the key to construction electrochemical sensors. A new hydrogel material was developed by incorporating Fe(II) phthalocyanine (FePc) into chitosan-based hydrogels. plays a crucial role in dispersing FePc nanoparticles uniformly and generating stable environment for redox reaction butylated hydroxyanisole (BHA) on surface. Under optimized conditions, prepared sensor exhibited detection range 0.1-30 30-1000 μmol/L, with limit 0.035 μmol/L (S/N = 3). Moreover, this demonstrated exceptional resistance interference maintained its stability. These findings suggest that promising reliable BHA real samples, highlighting potential combining conductive hydrogels functionalized metal phthalocyanines accurate rapid determination.

Язык: Английский

Процитировано

3
A Comparison of the Electrical Properties of Gel Polymer Electrolyte-Based Supercapacitors: A Review of Advances in Electrolyte Materials DOI Creative Commons
Ghobad Behzadi Pour,

Hamed Nazarpour Fard,

Leila Fekri Aval

и другие.

Gels, Год журнала: 2024, Номер 10(12), С. 803 - 803

Опубликована: Дек. 6, 2024

Flexible solid-state-based supercapacitors are in demand for the soft components used electronics. The increased attention paid toward solid-state electrolytes could be due to their advantages, including no leakage, special separators, and improved safety. Gel polymer (GPEs) preferred energy storage field, likely owing safety, lack of compatibility with various separators as well higher ionic conductivity (IC) than traditional solid electrolytes. This review covers classification, properties, configurations different GPE-based recent advancements that have occurred this area storage. Ionic liquid (IL)-based materials popular GPEs electrochemical can prepare unprecedented flexible great IC wide potential range. A comparative assessment GPEs-based reveals a majority them, value specific capacitance is generally under 1000 F g−1, density reaches around 125 Wh kg−1, power seen less 1500 W kg−1. results research serve an essential reference upcoming scholars, significantly improve our comprehension efficacy GPE-containing supercapacitors.

Язык: Английский

Процитировано

2
Piezoelectric Behaviour in Biodegradable Carrageenan and Iron (III) Oxide Based Sensor DOI Creative Commons
Vytautas Bučinskas, Dainius Udris, Andrius Dzedzickis

и другие.

Sensors, Год журнала: 2024, Номер 24(14), С. 4622 - 4622

Опубликована: Июль 17, 2024

This paper is dedicated to the research of phenomena noticed during tests biodegradable carrageenan-based force and pressure sensors. Peculiar voltage characteristics were impact tests. Therefore, sensors' responses researched more thoroughly, defining time-dependent sensor output signals from calibrated energy impact. The was performed using experimental methods when a free-falling steel ball impacted material create relatively definable energy. sensor's signal, which analogue voltage, registered an oscilloscope transmitted PC for further analysis. obtained results showed very interesting outcome, where sensor, intended be piezoresistive, demonstrated combination behaviour typical galvanic cells piezoelectric material. It provides stable DC that sensitive applied statical pressure, in case sudden impact, like hit, it demonstrates with some particular effects, are described as proton transfer sensor-sensitive Such design matter development research.

Язык: Английский

Процитировано

1
A robust and adhesive anti-swelling hydrophobic ionogel with prolonged stability for strain and temperature sensors DOI
Yu Zhang, Yuanna Sun,

Jiahang Yang

и другие.

Journal of Materials Chemistry A, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

With the growing attention given to wearable electronic devices, flexible sensors, as a fundamental component, are emerging focal point.

Язык: Английский

Процитировано

1
Silicon-Enhanced PVA Hydrogels in Flexible Sensors: Mechanism, Applications, and Recycling DOI Creative Commons

Xiaolei Guo,

Hao Zhang,

Manman Wu

и другие.

Gels, Год журнала: 2024, Номер 10(12), С. 788 - 788

Опубликована: Дек. 2, 2024

Hydrogels, known for their outstanding water absorption, flexibility, and biocompatibility, have been widely utilized in various fields. Nevertheless, application is still limited by relatively low mechanical performance. This study has successfully developed a dual-network hydrogel with exceptional properties embedding amino-functionalized polysiloxane (APSi) networks into polyvinyl alcohol (PVA) matrix. effectively dissipates energy through dense sacrificial bonds between the networks, allowing precise control over its tensile strength (ranging from 0.07 to 1.46 MPa) toughness (from 0.06 2.17 MJ/m3) adjusting degree of crosslinking network. Additionally, exhibits excellent conductivity (10.97 S/cm) strain sensitivity (GF = 1.43), indicating potential use wearable sensors. Moreover, at end life (EOL), sensor waste can be repurposed as an adsorbent material metal ions treatment, achieving recycling materials maximizing resource utilization.

Язык: Английский

Процитировано

1
The Impact of Temperature and the Duration of Freezing on a Hydrogel Used for a 3D-Bioprinted In Vitro Skin Model DOI Creative Commons

Maja Sever,

Dominik Škrinjar, Tina Maver

и другие.

Biomedicines, Год журнала: 2024, Номер 12(9), С. 2028 - 2028

Опубликована: Сен. 5, 2024

Skin bioprinting has the potential to revolutionize treatment approaches for injuries and surgical procedures, while also providing a valuable platform assessing screening cosmetic pharmaceutical products. This technology offers key advantages, including flexibility reproducibility, which enable creation of complex, multilayered scaffolds that closely mimic intricate microenvironment native skin tissue. The development an ideal hydrogel is critical successful these with incorporated cells. In this study, we used formulation developed in our laboratory fabricate 3D-bioprinted model. composition was carefully selected based on its high compatibility human cells, incorporating alginate, methyl cellulose, nanofibrillated cellulose. One challenges process, particularly commercialization large-scale production, ensuring consistency minimal batch-to-batch variations. To address this, explored methods preserve physicochemical properties hydrogels, focus freezing techniques. We validated pre-frozen hydrogels' printability, rheology, mechanical surface properties. Our results revealed extended times significantly reduced viscosity formulations due ice crystal formation, leading redistribution polymer chains. reduction resulted more challenging extrusion increased macro- microporosity as confirmed by nanoCT imaging. porosity led greater water uptake, swelling, compromised scaffold integrity, altered degradation kinetics. insights gained from study lay solid foundation advancing vitro model promising applications preclinical clinical research.

Язык: Английский

Процитировано

0