Multi-Layer Polyurethane-Fiber-Prepared Entangled Strain Sensor with Tunable Sensitivity and Working Range for Human Motion Detection DOI Open Access
Weibing Zhong,

Daiqing Wang,

Yiming Ke

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(8), P. 1023 - 1023

Published: April 9, 2024

The entanglement of fibers can form physical and topological structures, with the resulting bending stretching strains causing localized changes in pressure. In this study, a multi-layer polyurethane-fiber-prepared (MPF) sensor was developed by coating CNT/PU sensing layer on outside an elastic electrode through wet-film method. entangled topology two MPFs utilized to convert strain into pressure at contact area, enabling perception strain. influence mechanical properties surface structure performance investigated. A force regulator introduced regulate MPF. By modifying thickness length proportion regulator, sensitivity factor range could be controlled, achieving high up 127.74 58%. Eight sensors were integrated array dance costume, successfully monitoring multi-axis motion dancer’s lumbar spine. This provides new approach for wearable biomechanical sensors.

Language: Английский

Fishbone and nettle fiber inspired stretchable strain sensor with high sensitivity and wide sensing range for wearable electronics DOI
Weiqiang Hong, Xiaohui Guo, Xianghui Li

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 492, P. 152281 - 152281

Published: May 15, 2024

Language: Английский

Citations

29
MXene-Based Chemo-Sensors and Other Sensing Devices DOI Creative Commons
Ilya Navitski,

Agne Ramanaviciute,

Simonas Ramanavičius

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(5), P. 447 - 447

Published: Feb. 28, 2024

MXenes have received worldwide attention across various scientific and technological fields since the first report of synthesis Ti3C2 nanostructures in 2011. The unique characteristics MXenes, such as superior mechanical strength flexibility, liquid-phase processability, tunable surface functionality, high electrical conductivity, ability to customize their properties, led widespread development exploration applications energy storage, electronics, biomedicine, catalysis, environmental technologies. significant growth publications related over past decade highlights extensive research interest this material. One area that has a great potential for improvement through integration is sensor design. Strain sensors, temperature pressure biosensors (both optical electrochemical), gas pollution sensors targeted at volatile organic compounds (VOCs) could all gain numerous improvements from inclusion MXenes. This delves into current landscape, exploring advancements MXene-based chemo-sensor technologies examining future diverse types.

Language: Английский

Citations

17
Bioinspired Tunable Helical Fiber-Shaped Strain Sensor with Sensing Controllability for the Rehabilitation of Hemiplegic Patients DOI
Fei Tong, Ting Ting Wang, Ming Li

et al.

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

Published: Jan. 11, 2025

Fiber-based strain sensors, as wearable integrated devices, have shown substantial promise in health monitoring. However, current sensors suffer from limited tunability sensing performance, constraining their adaptability to diverse human motions. Drawing inspiration the structure of spiranthes sinensis, this study introduces a unique textile wrapping technique coil flexible silver (Ag) yarn around surface multifilament elastic polyurethane (PU), thereby constructing helical fiber-based sensor. The synergistic interaction between PU core and outer Ag enhances mechanical strength stretchability sensor, while external offers high conductivity. By adjusting spacing coils on we achieve precise control over both sensitivity range. Specifically, experimental results show that with pitch 1.25 mm, range reaches up 150%, gauge factor (GF) is 2.6; when adjusted 5 within 60% range, GF value significantly increases 9.3. Based these excellent performance metrics, further apply sensor conductor ECG monitoring garments, successfully verifying its practicality cardiac Additionally, developed smart glove for hand function rehabilitation training, utilizing wireless signal transmission promote recovery hemiplegic patients. also capable effectively respiratory rate pulse, showing broad prospects fields medicine healthcare.

Language: Английский

Citations

2
Combinatorial Bionic Hierarchical Flexible Strain Sensor for Sign Language Recognition with Machine Learning DOI

Xuanjie Zong,

Nianqiang Zhang, Jilai Wang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(29), P. 38780 - 38791

Published: July 16, 2024

Flexible strain sensors have been widely researched in fields such as smart wearables, human health monitoring, and biomedical applications. However, achieving a wide sensing range high sensitivity of flexible simultaneously remains challenge, limiting their further To address these issues, cross-scale combinatorial bionic hierarchical design featuring microscale morphology combined with macroscale base to balance the is presented. Inspired by combination serpentine butterfly wing structures, this study employs three-dimensional printing, prestretching, mold transfer processes construct sensor (CBH-sensor) serpentine-shaped inverted-V-groove/wrinkling-cracking structures. The CBH-sensor has 150% gauge factor up 2416.67. In addition, it demonstrates application array sign language gesture recognition, successfully identifying nine different gestures an impressive accuracy 100% assistance machine learning. exhibits considerable promise for use enabling unobstructed communication between individuals who those do not. Furthermore, wide-ranging possibilities field gesture-driven interactions human-computer interfaces.

Language: Английский

Citations

5
Recent advances in MXene/elastomer nanocomposites: Synthesis, properties and applications DOI Creative Commons
Ishara Wijesinghe,

Sajani Wimalachandra,

Hiran Chathuranga

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: 214, P. 113180 - 113180

Published: May 31, 2024

MXene is a novel 2D nanomaterial with excellent mechanical properties, thermal and electrical conductivities, flame retardancy, electromagnetic interference shielding, etc. Owing to these inherent extensively used as reinforcing functional material in elastomer nanocomposites while identifying its capabilities potential applications. Due the above reasons, systematic rationally well-detailed up-to-date review focused on an overall understanding of MXene/elastomer needed. Hence, critical provided herein, reporting status research nanocomposites, knowledge gaps, future potential. A bibliometric analysis shows steady growth interest nanocomposites. Also, metadata reported synthesis processes pre-surface modifications indicate parameters fine-tuned functionalities The characterization critically reviewed, focusing photothermal electrothermal conversion, resistance. Finally, applications composites, e.g., sensing, energy applications, have also been emphasizing existing technical challenges possible directions field.

Language: Английский

Citations

4
Ultrasensitive Flexible Strain Sensor Made with Carboxymethyl-Cellulose-Anchored Carbon Nanotubes/MXene for Machine-Learning-Assisted Handwriting Recognition DOI

Junming Cao,

Xueguang Yuan,

Yangan Zhang

et al.

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

Published: Sept. 14, 2024

The combination of wearable sensors with machine learning enables intelligent perception in human-machine interaction and healthcare, but achieving high sensitivity a wide working range flexible strain for signal acquisition accurate recognition remains challenging. Herein, we introduced carboxymethyl cellulose (CMC) into carbon nanotubes (CNTs)/MXene hybrid network, forming tight anchoring among the conductive materials and, thus, bringing enhanced interaction. silicone-rubber-encapsulated CMC-anchored CNTs/MXene (CCM) sensor exhibits an excellent (maximum gauge factor up to 71 294), (200%), ultralow detection limit (0.05%), outstanding durability (over 10 000 cycles), which is superior most recently reported counterparts also based on composite film. Moreover, achieves seamless integration human skin help poly(acrylic acid) adhesive layer, successfully obtaining stable clear waveforms meaningful profiles from body. On this basis, proposed realized novel in-air handwriting method via extracting multiple features high-quality signals assisted by deep neural networks, classification accuracy 98.00 94.85% Arabic numerals letters, respectively. Our work provides effective approach significantly improving sensing performance, thereby facilitating innovative applications sensors.

Language: Английский

Citations

4
Polyurethane Materials for Fire Retardancy: Synthesis, Structure, Properties, and Applications DOI Creative Commons
Jiemin Zhang, Guan Heng Yeoh, Imrana I. Kabir

et al.

Fire, Journal Year: 2025, Volume and Issue: 8(2), P. 64 - 64

Published: Feb. 5, 2025

As the demand for high-performance polymers broadens, polyurethane (PU) with various chemical modifications have attracted attention. This review explores structure and functional variations of PUs. PUs are used in a variety fields, ranging from aerospace engineering to daily necessities, show remarkable safety adaptability through designable synthesis processes. study is divided into four main parts: (1) structure, covering PU base modification additive compounds; (2) performance, studying physical properties thermal degradation processes; (3) application, evaluating commercial potential polymers; (4) flame retardancy, analyzing five established flame-retardant mechanisms. The last part discusses how can meet sustainable development goals by replacing petroleum-based materials green materials. By emphasizing non-petroleum resources novel, strategies, this conducts guidance safe environmentally friendly application future.

Language: Английский

Citations

0
Flexible, Stretchable MXene/Polydopamine@Natural Rubber-based Strain Sensor with Core-shell Structures for Human Activity Monitoring DOI
Xin Gu, Jinyu Sun, Yizhong Yuan

et al.

Sensors and Actuators A Physical, Journal Year: 2025, Volume and Issue: unknown, P. 116350 - 116350

Published: Feb. 1, 2025

Language: Английский

Citations

0
An Overview of Two-Dimensional Nanomaterial—MXene in Energy Storage and Sensing Application DOI

Shuaib Abrar Jalaludeen,

Kishore Kumar Venkatesan,

S. Rafi Ahamed

et al.

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

Published: April 22, 2025

Language: Английский

Citations

0
Multi-Layer Polyurethane-Fiber-Prepared Entangled Strain Sensor with Tunable Sensitivity and Working Range for Human Motion Detection DOI Open Access
Weibing Zhong,

Daiqing Wang,

Yiming Ke

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(8), P. 1023 - 1023

Published: April 9, 2024

The entanglement of fibers can form physical and topological structures, with the resulting bending stretching strains causing localized changes in pressure. In this study, a multi-layer polyurethane-fiber-prepared (MPF) sensor was developed by coating CNT/PU sensing layer on outside an elastic electrode through wet-film method. entangled topology two MPFs utilized to convert strain into pressure at contact area, enabling perception strain. influence mechanical properties surface structure performance investigated. A force regulator introduced regulate MPF. By modifying thickness length proportion regulator, sensitivity factor range could be controlled, achieving high up 127.74 58%. Eight sensors were integrated array dance costume, successfully monitoring multi-axis motion dancer’s lumbar spine. This provides new approach for wearable biomechanical sensors.

Language: Английский

Citations

3