CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Tao Yan,Xiaole Tao,Hong Lei,Yang Qiu,Zirui Han,Kaitai Wei,Bin He,Yuting Wu,Zhijuan Pan
Flexible heating/strain sensing fiber devices have wide potential application in the fields of the real-time monitoring performance of human movement and physiological information and thermal management. However, there are still shortcomings in multi-functional integration and information visualization. In this work, the hollow thermoplastic polyurethane(TPU) nanofiber yarn was constructed by conjugate electrospinning technology, and Joule heating/strain sensing yarn was developed by continuous conductive treatment and twisting technology. Finally, the thermochromic sheath layer was constructed on the surface of the composite yarn to prepare the Joule heating/strain sensing yarn with the visible temperature(VHSY). The results showed that VHSY can detect both tensile and bending deformation. The excellent dynamic/static stability and durability were obtained as a flexible strain sensor. The GF values reached 23.08 in the strain range of 30 % and 170.02 in the strain range of 30 % to 50 %, respectively. In addition, VHSY exhibited a reversible color change of yellow-gray-blue-purple in the range of 25–60 °C, and the stable static and dynamic electric heating performance was obtained. The response times of heating and cooling temperature were 9.95 s and 10.62 s, respectively. VHSY held the excellent visualization function and strain sensing performance after 20 washes. This sensor has great potential applications for physical exercise and health monitoring. The work offers a novel strategy for the design of multifunctional yarn-based wearable devices and smart textiles.
研究领域:
材料科学
·
可穿戴电子学
·
柔性传感器
·
智能纺织品
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Liuzi Du,Xiaodong Zhai,Xinyang Han,Ke Zhang,Junjun Zhang,Xiaobo Zou,Zhihua Li,Zhikun Yang,Quancai Sun,Ye Peng,Xiaowei Huang
A bilayer TPU film integrating volatile-amine-responsive colorimetric sensing and sustained antibacterial release. • Bromocresol purple/fluorescein enabled dual colorimetric and fluorescent responses over a broad pH range. • Carvacrol/tea tree oil-loaded L/HKUST-1 inhibited both Gram-positive and Gram-negative bacteria. • The film showed reversible responses to NH 3 , DMA, and TMA, while ΔE correlated well with beef TVB-N ( R 2 = 0.9417). • The bilayer film delayed refrigerated beef deterioration by about 4 days and enabled freshness monitoring. A bilayer TPU-based intelligent packaging film integrating colorimetric sensing and antibacterial preservation was developed. The film consisted of a dense cast TPU indicator layer containing a bromocresol purple/fluorescein indicator and an electrospun TPU antibacterial layer loaded with lignin-modified HKUST-1 loaded with carvacrol and tea tree oil. The indicator showed reversible responses to ammonia, dimethylamine, and trimethylamine, with detection limits of 0.37, 0.15, and 0.18 μ M, respectively. Lignin modification improved the aqueous structural retention of HKUST-1, and the electrospun layer exhibited sustained, pH-dependent release of the antibacterial components. Water vapor permeability was further evaluated under both 25 and 4 °C conditions. The film showed antibacterial activity against the four tested bacterial strains ( Escherichia coli , Staphylococcus aureus , Pseudomonas aeruginosa , and Bacillus subtilis ), while its extracts caused no detectable cytotoxicity under the tested conditions. In refrigerated beef, the selected TBF3-T-LH@CT formulation delayed quality deterioration by approximately 4 days and provided visible freshness indication from yellow to orange-red. The color variation correlated well with beef spoilage indicators, supporting visual freshness monitoring. These results demonstrate the potential of the bilayer film for intelligent active food packaging. Download: Download high-res image (212KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yapeng Shi,Xuelian Wei,Kaimeng Wang,Dongdong He,Zhihao Yuan,Jiahui Xu,Zhiyi Wu,Zhong Lin Wang
The development of wearable electronic skins (E-skins) requires devices with high flexibility, breathability, and antibacterial activity, as in sports sensing technology. Here, we report a flexible, breathable, and antibacterial triboelectric nanogenerator (TENG)-based E-skin for self-powered sensing in volleyball reception statistics and analytics, which is fabricated by sandwiching a silver nanowire (Ag NW) electrode between a thermoplastic polyurethane (TPU) sensing layer and a poly(vinyl alcohol)/chitosan (PVA/CS) substrate. Benefiting from an outstanding breathability of 10.32 kg m–2 day–1 and biocidal properties of CS and Ag NW, the E-skin offers excellent thermal-moisture comfort and a remarkable antibacterial effect on Escherichia coli and Staphylococcus aureus. A pressure sensitivity of 0.3086 V kPa–1 is demonstrated in the sensing range of 6.65–19.21 kPa. Besides, a volleyball reception statistical and analytical system is further developed based on a 2 × 3 E-skin array. According to this work, the integration of wearable electronic devices with self-powered sensors may expand practical applications in sports.
研究领域:
可穿戴技术
·
纳米技术
·
体育科学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zeyu Wang,Fengkai Zhou,Yimeng Li,Shasha Wang,Wei Li,Haizhi Liu,Meiqi Hu,Fujun Wang,Lu Wang,Jifu Mao
Flexible sensors are an important component of wearable medical electronics and hold considerable promise for research. Presently, stretchable strain sensors face two primary challenges: balancing the sensing range with sensitivity, and ensuring compatibility between conductivity and mechanical properties. Here, flexible sensing fibers with high gauge factor (GF) and wide monitoring range are reported based on a hierarchical structure composed of electrostatic adsorption principle and hydrogen bonding interactions. The hierarchical structure material consists of thermoplastic polyurethane (TPU), MXene, polypyrrole (PPy) and waterborne polyurethane (WPU). Among them, MXene (2D) and PPy (3D) are uniformly distributed on the surface of the MXene/TPU fiber (1D) to form a conductive and sensing pathway. This multi-dimensional combination approach enables the fiber sensor to have a high sensing range (0 ∼ 106 %) and high sensitivity (60 ∼ 3.23 × 10 6 ). In addition, the WPU acts as a protective layer, which not only reduces the damage to the sensing layer, but also improves the stretchability (>750 %) and modulus (∼12 MPa) of the sensor. Therefore, it can function as fiber sensor for monitoring not only human movement but also swelling in the legs of patients with varicose veins. The sensor also has a joule heating effect, as well as the potential to be integrated into fabrics, providing an important case for the construction of multifunctional flexible wearable medical electronics with practical applications.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
可穿戴技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Fiber Materials
·
2024
·
IF 17.2
Wang Peng,Liu Gengsheng,Sun Guifen,Meng Chuizhou,Shen Guozhen,Li Yang
Bulky external power supplies largely limit the continuous long-term application and miniaturization development of smart sensing devices. Here, we fabricate a flexible and wearable integrated sensing system on an electrospun all-nanofiber platform. The three parts of the sensing system are all obtained by a facile ink-based direct writing method. The resistive pressure sensor is realized by decorating MXene sheets on TPU nanofiber. And, the resistive temperature sensor is prepared by compositing MXene sheets into poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). The thin-film zinc–air battery (ZAB) includes an interdigital zinc–air electrode that is bonded with a gel polymer electrolyte. It can supply a high open-circuit voltage of 1.39 V and a large areal capacity of 18.2 mAh cm −2 for stable and reliable power-supplying sensing parts operation. Thanks to the hydrophobic nature of TPU and open-ended micropores in the TPU nanofiber, the sensing system is waterproof, self-cleaning, and air and moisture permeable. For application, the above-mentioned functional components are seamlessly integrated into an intelligent electronic wristband, which is comfortably worn on a human wrist to monitor pulse and body temperature in real time with continuous operation of up to 4 h. By the novel design and remarkable performance, the proposed integrated all-nanofiber sensing system presents a promising solution for developing advanced multifunctional wearable electronics. Graphical Abstract We developed an integrated sensing system on a flexible and breathable thermoplastic polyurethane nanofiber platform. The sensing system is realized by a direct write technology and includes a pressure sensor, temperature sensor, and rechargeable zinc–air battery. The integrated sensing system was designed for wristbands and demonstrated to accurately detect pulse beating and skin temperature under different states for up to 4 hours of wearing.
研究领域:
材料科学
·
纳米技术
·
可穿戴技术
·
医疗监测
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Additive Manufacturing
·
2021
·
IF 10.998
Hongjie Bi,Gaoyuan Ye,Hao Sun,Zechun Ren,Tongfei Gu,Min Xu
The current work demonstrates excellent thermal, mechanical, shape memory, and self-healing properties of 3D printable, thermoreversible, cross-linked network composites. The thermoreversible cross-linked networks are composed of Diels-Alder (DA) reversible covalent and transient cross-links, which are formed by thermoplastic polyurethane (TPU) and poly(ε-caprolactone) (PCL). Also, cellulose nanocrystalline (CNC) is utilized as a cross-linking agent. The incorporated CNC, modified with furan (CNC-FA) and maleic anhydride groups (CNC-MAH), exhibits excellent compatibility with TPU/PCL matrix, forming physical and chemical cross-linking structures in the composites. Also, the mechanical properties , thermal stability, and self-healing properties are significantly improved after the addition of modified CNC. In addition, the mechanism of performance enhancement is further analyzed by molecular dynamics simulations. One should note that the mechanically robust and 3D printable self-healing composites enable the fabrication of durable conductive devices and biomimetic skin devices with high mechanical integrity, excellent electrical healing and superior strain-induced fluorescence properties, showing promise in next-generation flexible electronics, encryption devices and electronic skins, and may broaden the variety and applications of 3D-printable materials.
研究领域:
材料科学
·
聚合物科学
·
纳米技术
·
柔性电子
·
生物材料
·
3D打印
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Jingwen Wang,Shun Liu,Zhaoyang Chen,Taoyu Shen,Yalong Wang,Rui Yin,Hu Liu,Chuntai Liu,Changyu Shen
With the rapid development of wearable electronic skin technology, flexible strain sensors have shown great application prospects in the fields of human motion and physiological signal detection, medical diagnostics, and human-computer interaction owing to their outstanding sensing performance. This paper reports a strain sensor with synergistic conductive network, consisting of stable carbon nanotube dispersion (CNT) layer and brittle MXene layer by dip-coating and electrostatic self-assembly method, and breathable three-dimensional (3D) flexible substrate of thermoplastic polyurethane (TPU) fibrous membrane prepared through electrospinning technology. The MXene/CNT@PDA-TPU (MC@p-TPU) flexible strain sensor had excellent air permeability, wide operating range (0–450%), high sensitivity (Gauge Factor, GF max = 8089.7), ultra-low detection limit (0.05%), rapid response and recovery times (40 ms/60 ms), and excellent cycle stability and durability (10000 cycles). Given its superior strain sensing capabilities, this sensor can be applied in physiological signals detection, human motion pattern recognition, and driving exoskeleton robots. In addition, MC@p-TPU fibrous membrane also exhibited excellent photothermal conversion performance and can be used as a wearable photo-heater, which has far-reaching application potential in the photothermal therapy of human joint diseases.
研究领域:
可穿戴电子
·
柔性传感器
·
人体运动监测
·
人机交互
·
光热治疗
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）