Materials Today
·
2025
·
IF 22
Xuan Ye,Ruipeng Zhang,Yahui Zhao,Shuai Wen,Tongtong Li,Zhaorui Zhang,Hongyun Qiu,Shaobo Ji
Thermoelectric (TE) materials have been extensively used in self-powered temperature sensing devices, especially flexible sensors that require low energy consumption. One of their important features is the flexibility that allows conformal contact with various subjects and tolerance to mechanical deformation. However, realizing both high TE conversion efficiency and excellent flexibility remains a significant challenge. Here, a general method was developed to produce stretchable high-performance TE composites and achieved asymmetric composite thermoelectric materials (ACTE) with high Seebeck coefficient (215 μV·K −1 for n-type, 175 μV·K −1 for p-type). The fully stretchable temperature sensors (FSTS) fabricated from ACTE exhibited good flexibility which could withstand 50 % uniaxial tensile strain and 30 % biaxial strain with low thicknesses (∼650 μm) that allowed for good contact on curved surfaces. The sensitivity of FSTS reached ∼145 μV·K −1 with 18 n/p ACTE pairs and ∼37 μV·K −1 with 2 pairs and could output stable signals regardless of flexural or tensile deformation. The FSTS was also fabricated into an array that could be worn as sensors or electronic skin with temperature sensing and mapping abilities. This work not only produced fully stretchable TE devices but also provided a general method for the fabrication of other high-performance stretchable composites and devices.
研究领域:
生物医学工程
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柔性电子学
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热电转换技术
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产品关联
DOI
高影响因子
Science Advances
·
2021
·Vol. 7
·期 22
·
IF 14.143
Lijing Zheng,Miaomiao Zhu,Baohu Wu,Zhaoling Li,Shengtong Sun,Peiyi Wu
Highly conductive and stretchy fibers are crucial components for smart fabrics and wearable electronics. However, most of the existing fiber conductors are strain sensitive with deteriorated conductance upon stretching, and thus, a compromised strategy via introducing merely geometric distortion of conductive path is often used for stable conductance. Here, we report a coaxial wet-spinning process for continuously fabricating intrinsically stretchable, highly conductive yet conductance-stable, liquid metal sheath-core microfibers. The microfiber can be stretched up to 1170%, and upon fully activating the conductive path, a very high conductivity of 4.35 × 104 S/m and resistance change of only 4% at 200% strain are realized, arising from both stretch-induced channel opening and stretching out of tortuous serpentine conductive path of the percolating liquid metal network. Moreover, the microfibers can be easily woven into an everyday glove or fabric, acting as excellent joule heaters, electrothermochromic displays, and self-powered wearable sensors to monitor human activities.
研究领域:
材料科学
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柔性电子
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纺织工程
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产品关联
DOI
PubMed
高影响因子
ANALYST
·
2023
·Vol. 148
·期 20
·5060-5069
·
IF 4.2
Jun Sun,Rongquan Zhu,Xiaojiao Du,Bing Zhang,Min Zheng,Xingyu Ji,Long Geng
A photo-driven self-powered aptasensor was constructed based on a matching capacitor and the ZnIn2S4/Ti3C2 heterojunction as the photoanode and Cu2O as the photocathode in a dual-photoelectrode sensing matrix for multiple signal amplification for the ultrasensitive detection of microcystin-RR (MC-RR). The introduction of Ti3C2 MXene nanosheets on the photoanode surface can not only accelerate the transfer and separation of photoinduced electron/hole pairs, thus enhancing the output signal of the photo-driven self-powered system, but also provide a larger specific surface area for the immobilization of the bio-recognition unit aptamer. More importantly, for a portable and miniaturized device, a micro-workstation with the size of a universal serial bus (USB) disk and a novel short-circuit current access was proposed to capture the instantaneous output electrical signal for real-time data tracking. In such a way, a sensitivity of 2.7 mA pM−1 was achieved when the matching capacitor was integrated into the self-powered system, which was 22 times that without a capacitor. After the interaction between MC-RR and the corresponding aptamer, a ‘signal-off’ detection configuration was formed via the steric hindrance effect. Therefore, such a multiple signal amplification system realized the ultrasensitive and selective determination of MC-RR successfully. Under optimal conditions, the linear range of the self-powered aptasensor was 0.1 to 100 pM and the detection limit was 0.033 pM (S/N = 3). The aptasensor was applied to the detection of MC-RR in fish, exhibiting good reproducibility (≈3.88%), paving the way for detecting microcystins in real-life samples.
研究领域:
环境科学
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分析化学
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生物传感技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Linghu Meng,Yuli Zhao,Guiwu Liu,Siwei Liu,Xiangzhao Zhang,Shahid Hussain,Mingyuan Wang,Guanjun Qiao
Real-time, room-temperature nitrogen dioxide (NO 2 ) monitoring is crucial for protecting human health and the environment, yet conventional sensors face limitations on high-temperature operation and external power dependence. Here, we report a self-powered zinc-air battery-driven NO 2 gas sensor based on a multiple grain boundary-engineered CeO 2 (MGB-CeO 2 ) air cathode. Abundant grain boundaries in MGB-CeO 2 promote oxygen vacancy formation, providing more active sites that facilitate NO 2 adsorption and charge transfer. Compared to nanorod CeO 2 (NR-CeO 2 ) sensor, the MGB-CeO 2 sensor achieves a 3.5-fold higher response of 21.2 % to 10 ppm NO 2 , along with shorter response and recovery times. Density functional theory (DFT) calculations confirm significantly higher NO 2 adsorption energy for MGB-CeO 2 than that for NR-CeO 2 , which can be attributed to its defect-rich structure. The MGB-CeO 2 sensor presents outstanding selectivity, low practical limit of detection, and excellent long-term stability. This work provides a novel strategy for the development of self-powered gas sensors, offering valuable insights into electrochemical sensing for practical implications.
研究领域:
材料科学
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环境监测
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电化学传感
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纳米材料
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能源器件
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Yufang Liao,Xiaoli Liang,Hongwang Qu,Didi Wen,Yuqi Li,Jian Xu,Yongkang Bai
The multifunctional integration properties of biological tissues provide significant bionic insights for designing intelligent materials, driving the advancement of materials science toward multifunctional coupling. Traditional flexible materials often face challenges in achieving property compatibility and functional synergy, especially under complex environments. To address these challenges, this work developed a novel composite ionogel based on poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and PEDOT:PSS, which exhibits toughness, frost resistance, underwater stability, and shape memory functionality. The incorporation of conductive filler PEDOT:PSS synergistically optimizes the mechanical properties, near-infrared-responsive functionality and conductivity of composite ionogels. The ionogels exhibit superior thermo/light dual-response shape memory behavior, with shape fixation and recovery rates both exceeding 98 %. Based on the light-responsive shape memory performance, the ionogels can lift objects 22 times its own weight and enable real-time monitoring of the actuation process through the resistance variation induced by shape recovery. The ionogel's underwater environmental stability and enhanced conductivity allow its strain sensors to effectively monitor human joint movements, such as finger and wrist bending, in both terrestrial and aquatic environments. Additionally, a self-powered pressure sensor fabricated with this ionogel serving as both the friction and conductive layers exhibits a high sensitivity of 5.890 V kPa −1 , enabling real-time human activity capture and facilitating an innovative braille typing assistance system for the visually impaired. This work offers novel insights into the engineering of material properties and the integration of multifunctionalities, thereby promoting the advancement of multifunctional material systems.
研究领域:
材料科学
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生物医学工程
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柔性电子学
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智能材料
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人机交互
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Yongkang Bai,Chunzi Lv,Yufang Liao,Longzhang Niu,Yuqi Li,Didi Wen,Lina Niu
The rapid progress of soft actuators across various domains has attracted considerable attention due to their diverse applications. However, the increasing demand for real-time feedback and closed-loop control in complex scenarios requires self-sensing capabilities for autonomous intelligent soft actuators. To address this issue, we proposed a self-powered sensing shape memory actuator based on polyvinylidene fluoride/carbon nanotube composites. These composites exhibited outstanding thermal and near-infrared light-responsive shape memory performance, achieving a shape recovery ratio close to 100 %. The reversible shape memory effects were achieved through a bilayer-structured material, thereby expanding its application as soft actuators. Moreover, the composites were used to fabricate a triboelectric nanogenerator (TENG) that exhibited high pressure sensing performance with a sensitivity of 0.127 V kPa −1 . Through careful design, the self-sensing function of the shape memory actuators was accomplished by the self-powered sensing of TENG driven by the reversible shape memory effects. Furthermore, we demonstrated practical applications of the self-powered sensing shape memory actuators by fabricating a light-control switch and a smart gripper. The gripper, in particular, demonstrated material recognition based on the actuating and sensing functions of the actuators. Overall, this work provides a feasible method to fabricate shape memory actuators with a self-powered sensing function, expected to have broad application potential in soft robotics, wearable electronics and other integrated multi-functional devices.
研究领域:
材料科学
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软体机器人
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纳米发电机
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智能材料
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产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 56
·35644-35652
·
IF 3.361
Yuting Yan,Qian Li,Qirui Wang,Hanping Mao
Developing a new functional sensitized structure for improving the inherent property of photoactive materials and selecting an efficient electron donor as a photoelectrochemical (PEC) signal amplification strategy are crucial for achieving excellent PEC biosensors. Herein, we present a facile one-pot hydrothermal strategy for fabricating ZnO nanorod-decorated 3D graphene aerogels (ZnO/GAs). In this nanoarchitecture, GAs act as a new generation enhanced carrier, which can effectively improve the photoactivity of ZnO under visible light by enhancing the interfacial charge transfer. In addition, the as-prepared ZnO/GA nanocomposites exhibited two times higher photocurrent intensity than that of ZnO/graphene. Furthermore, we developed a novel self-powered PEC biosensor based on a ZnO/GAs sensitized structure with the amplification of enzymolysis products for the detection of parathion-methyl. Thiocholin, as a sacrificial electron donor, which is produced from the hydrolysis of acetylthiocholine catalyzed by acetylcholinesterase (AChE), can further significantly improve the photocurrent. Then, the inhibition of AChE activity by parathion-methyl prevented the production of thiocholine, resulting in an obvious decrease in photocurrents. Based on the above results, we fabricated an AChE-based self-powered PEC biosensor for the sensitive and selective determination of parathion-methyl with a linear range of 0.1 ng mL−1 to 0.1 μg mL−1 and a detection limit of 0.03 ng mL−1 (S/N = 3). This PEC biosensing strategy not only gives insights into using GAs as a novel sensibilizer to improve the PEC nature of semiconductors but also provides a promising flexible platform for organophosphorus pesticide detection.
研究领域:
材料科学
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环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
InfoMat
·
2023
·
IF 22.7
Wei Lu,Xiaoqiang Wang,Congyu Wang,Ke Gong,Jiawei Li,Xue Li,Peng Wang
Pathogenic and corrosive bacteria pose a significant risk to human health or economic well-being. The specific, sensitive, and on-site detection of these bacteria is thus of paramount significance but remains challenging. Taking inspiration from immunoassays with primary and secondary antibodies, we describe here a rational design of microbial sensor (MS) under a dual-specificity recognition strategy using Pseudomonas aeruginosa ( P. aeruginosa ) as the detection model. In the MS, engineered aptamers are served as the primary recognition element, while polydopamine- N -acetyl-D-galactosamine (PDA-Gal NAc) nanoparticles are employed as the secondary recognition element, which will also generate and amplify changes in the output voltage signal. To achieve self-powering capability, the MS is constructed based on a triboelectric nanogenerator (TENG) with the specific aptamers immobilized on the TENG electrode surface. The as-prepared MS-TENG system exhibits good stability in output performance under external forces, and high specificity toward P. aeruginosa , with no cross-reactivity observed. A linear relationship ( R 2 = 0.995) between the output voltage and P. aeruginosa concentration is established, with a limit of detection estimated at around 8.7 × 10 3 CFU mL −1 . The utilization of PDA-Gal NAc nanoparticles is found to play an important role in enhancing the specific and reliability of detection, and the underlying mechanisms are further clarified by computational simulations. In addition, the MS-TENG integrates a wireless communication module, enabling real-time monitoring of bacterial concentration on mobile devices. This work introduces a pioneering approach to designing self-powered smart microbial sensors with high specificity, using a double recognition strategy applicable to various bacteria beyond P. aeruginosa .
研究领域:
生物传感
·
微生物学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Qiaochu Chen,Yongkang Xiong,Yuzhu Wang,Jiali Wang,Shenhua Zhou,Guohao Sun,Huawei Hu,Yuzhang Du,Jie Kong,Zunfeng Liu,Nan Meng,Yaozu Liao
Integrating electromagnetic wave (EMW) absorption and non-contact sensing into flexible electronic fibers is essential for advancing multifunctional smart textiles. However, their simultaneous realization remains challenging due to the fundamentally opposing requirements for electrical conductivity. Inspired by the regionalized feather structure of an owl's wings, a functionally partitioned core-sheath yarn architecture is designed to spatially decouple EMW absorption and sensing functionalities. The core, composed of polyurethane hybridized with EMW-absorbing nanoparticles that provide magnetic–dielectric synergistic loss mechanisms, exhibits excellent EMW absorption performance (reflection loss peak: –30.1 dB; effective absorption bandwidth: 6.78 GHz). The sheath, made of poly(vinylidene fluoride-trifluoroethylene) nanofibers, offers superior triboelectric charge trapping and hydrophobicity, enabling robust self-powered non-contact sensing. The resulting fabric sensor delivers a high and stable voltage output of 6.3 V at a 2 mm separation, with outstanding durability over 5000 cycles. Integrated with a deep learning model, the sensor array enables real-time gesture recognition, demonstrating its potential in intelligent environmental perception and electromagnetic stealth. This work presents a promising platform for next-generation smart textiles that seamlessly combine energy harvesting, environmental adaptability, and human-machine interaction.
研究领域:
材料科学
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纳米技术
·
柔性电子学
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智能纺织品
·
人机交互
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yanqing Wang,Picheng Chen,Yu Ding,Penghao Zhu,Yuetao Liu,Chuanxing Wang,Chuanhui Gao
High mechanical strength, toughness, and fatigue resistance are essential to improve the reliability of conductive hydrogels for self-powered sensing. However, achieving mutually exclusive properties simultaneously remains challenging. Hence, a novel directed interlocking strategy based on topological network structure and mechanical training is proposed to construct tough hydrogels by optimizing the network structure and modulating the orientation of molecular chains. Combining Zn 2+ crosslinked cellulose nanofibers (CNFs) and a polyacrylamide-poly(vinyl alcohol) double-network, the unique interlocked-network structure exhibits an enhanced toughening effect due to hydrogen bonding and metal-ligand interactions. The aligned nanocrystalline domains achieved by training further contribute to an increase in the toughness and fatigue thresholds. This innovative approach synergistically enhances the mechanical properties of the nano-conductive hydrogel, achieving a maximum tensile strength of 4.98 MPa and a toughness of 48 MJ m −3 . Notably, the CNFs template with anchored polyaniline, when oriented through mechanical training, forms a unique directional conductive pathway, which significantly enhances the power output performance. Besides, a motion recognition system based on a self-powered sensing device is designed with the assistance of deep learning techniques to accurately identify human motion behaviors. This work showcases a potentially transformative flexible electronic material for self-powered sensing systems and intelligent recognition systems.
研究领域:
材料科学
·
生物医学工程
·
智能系统
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2018
·
IF 13.12
Xuan Zhao,Zhuo Kang,Qingliang Liao,Zheng Zhang,Mingyuan Ma,Qian Zhang,Yue Zhang
In the Internet of things (IoT), motion sensor in the perceptual layer is at the forefront of the information collection, which plays a crucial role in the IoT. However, with a large number of commercial applications, several problems of motion sensor limit the development of IOT such as poor portability, poor environmental adaptability, and high energy consumption, etc. In this work, an ultralight, self-powered and self-adaptive motion sensor (UMS) is reported. Total mass of the UMS is less than 20 mg. Self-powered characteristic of the UMS is achieved based on the principle of triboelectric nanogenerator by using the coupling of triboelectrification and electrostatic induction as governed by the Maxwell's displacement current. Moreover, the UMS shows satisfactory self-adaptive performance of both temperature and humidity, less-sensitive to temperature in surroundings, from 15 ℃ to 60 ℃, and ambient humidity under 90% RH. Furthermore, sensing signals triggered by different motion behaviors, such as grasping, walking, stooping and so on, can be distinguished by the processor clearly, which can be applied to motion recognition and machine control. This work presents a novel UMS with characteristics of portability, energy conservation and environmental friendliness. The UMS shows broad prospect in perceptual layer application in IoT.
研究领域:
纳米能源
·
传感器技术
·
物联网
·
微纳系统
·
智能感知
·
生物医学工程
·
可穿戴设备
✓ 已验证
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Fujun Han,Tianyu Wang,Ying Chen,Xiuyan Ren,Zhihao Peng,Xulong Zheng,Kairui Wang,Yiyan Gao,Ya Cheng,Guanghui Gao
As a self-powered device, triboelectric fiber-generators (TEFGs) have garnered considerable attention over the past decade, overcoming the limitations of conventional power sources. Significantly, while both structures function, the aligned nanofiber film demonstrably outperforms the random nanofiber film in triboelectric output performance. Hence, a triboelectric all-nanofiber generator with an aligned structure is investigated, consisting of the co-electrospun polyacrylonitrile (PAN)/thermoplastic polyurethane (TPU) nanofiber positive triboelectric layer and polyvinylidene fluoride (PVDF)/polydimethylsiloxane (PDMS) nanofiber negative triboelectric layer. After the optimization of structure, triboelectric fiber-generators with aligned (A-TEFG) exhibited peak-to-peak voltage, current output, and transient power density values of 55 V, 0.8 μA, and 33.6 mW/m 2 , respectively, which could efficiently harvest mechanical energy to power light-emitting diodes (LEDs). Furthermore, A-TEFG was used as self-powered sensors for human movement monitoring and transmitting encrypted information followed Morse code principles. Based on the simple and scalable fabrication methods, A-TEFG makes a promising candidate to developing practical, flexible, and self-powered wearable electronic devices.
研究领域:
纳米技术
·
能量收集
·
柔性电子学
·
可穿戴设备
·
传感器技术
·
材料科学
✓ 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）