ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Jun Wang,Kai Yan,Xiao Li,Yan Zong,Qunna Xu,Xiaodan Sun
Developing comfortable, protective, and reliable monitoring wearable devices is of great significance for next-generation electronic devices. However, previously reported fabrics have proven inadequate for cross-mechanism sensing integration and electromagnetic wave (EMW) protection. To address these, an electromagnetic wave-absorbing flexible wearable device with multimodal sensing capabilities is fabricated based on cotton fabric through polypyrrole (PPy) in situ growth as well as dip-coating with polyaniline hollow microspheres (PHMs) and amino silane modified polyurethane. It demonstrates excellent electromagnetic wave-absorbing properties (Reflection loss peak: −48.20 dB, Effective absorption bandwidth:4.2 GHz). Remarkably, three sensing units have been all integrated by a multimodal sensing principle (strain, temperature, and triboelectric nanogenerator) in an all-in-one structural configuration. The motion sensing unit shows quick response (225 ms) and recovery (285 ms) times with high sensitivity (Gage factor ≈9.2). The temperature sensing unit has a sensitivity of 0.59% K −1 . The self-powered tactile sensing unit exhibits high output voltage (41 V), maximum instantaneous power density (1.9 W m −2 ), and detects touching incentive within 0.3 s. Smart human–machine interaction is demonstrated in applications like morse code, temperature, and touching detection. This study serves as a proof-of-concept for new smart textiles, showcasing potential for integrated flexible wearable devices, artificial intelligence, and human–machine interactions.
研究领域:
材料科学
·
电子工程
·
智能纺织品
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 9
·2014
·
IF 3.2
Tao Chen,Andeng Liu,Wentao Lei,Guoxu Wu,Jiajun Xiang,Yixin Dong,Yangyang Chen,Bingqi Chen,Meidan Ye,Jizhong Zhao,Wenxi Guo
Flexible wearable electronics face critical challenges in achieving reliable physiological monitoring, particularly due to the trade-off between sensitivity and durability in flexible electrodes, compounded by mechanical modulus mismatch with biological tissues. To address these limitations, we develop an anti-freezing ionic hydrogel through a chitosan/acrylamide/LiCl system engineered via the solution post-treatment strategy. The optimized hydrogel exhibits exceptional ionic conductivity (24.1 mS/cm at 25 °C) and excellent cryogenic tolerance. Leveraging these attributes, we construct a gel-based triboelectric nanogenerator (G-TENG) that demonstrates ultrahigh sensitivity (1.56 V/kPa) under low pressure. The device enables the precise capture of subtle vibrations at a frequency of 1088 Hz with a signal-to-noise ratio of 16.27 dB and demonstrates operational stability (>16,000 cycles), successfully differentiating complex physiological activities including swallowing, coughing, and phonation. Through machine learning-assisted analysis, the system achieves 96.56% recognition accuracy for five words and demonstrates good signal recognition ability in different ambient sound scenarios. This work provides a paradigm for designing environmentally adaptive wearable sensors through interfacial modulus engineering and ion transport optimization.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS
·
2025
·Vol. 25
·期 2
·423
·
IF 3.5
Rui Li,Jiahao Hu,Yalong Li,Yi Huang,Lin Wang,Mohan Huang,Zhikun Wang,Junlang Chen,Yan Fan,Liang Chen
Flexible, wearable, piezoresistive sensors have significant potential for applications in wearable electronics and electronic skin fields due to their simple structure and durability. Highly sensitive, flexible, piezoresistive sensors with the ability to monitor laryngeal articulatory vibration supply a new, more comfortable and versatile way to aid communication for people with speech disorders. Here, we present a piezoresistive sensor with a novel microstructure that combines insulating and conductive properties. The microstructure has insulating polystyrene (PS) microspheres sandwiched between a graphene oxide (GO) film and a metallic nanocopper-graphene oxide (n-Cu/GO) film. The piezoresistive performance of the sensor can be modulated by controlling the size of the PS microspheres and doping degree of the copper nanoparticles. The sensor demonstrates a high sensitivity of 232.5 kPa−1in a low-pressure range of 0 to 0.2 kPa, with a fast response of 45 ms and a recovery time of 36 ms, while also exhibiting excellent stability. The piezoresistive performance converts subtle laryngeal articulatory vibration into a stable, regular electrical signal; in addition, there is excellent real-time monitoring capability of human joint movements. This work provides a new idea for the development of wearable electronic devices, healthcare, and other fields.
研究领域:
材料科学
·
生物医学工程
·
电子皮肤技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2021
·Vol. 6
·期 11
·2100394
·
IF 7.848
Fengxiao Niu,Zhen Qin,Lizhen Min,Biao Zhao,Yuhuan Lv,Xiaohui Fang,Kai Pan
3D aerogel-based piezoresistive sensors have attracted tremendous attention due to their high sensitivity and excellent mechanical properties. Here, a novel piezoresistive sensor with ultrahigh linear sensitivity is tactfully designed and prepared based on nanofiber-reinforced MXene–reduced graphene oxide aerogel. The presence of MXene endows the piezoresistive sensor with high conductivity. Besides, the nanofibers can act as a scaffold to improve the compression resilience of the aerogel significantly by penetrating the entire aerogel network. Furthermore, due to the synergy effect among the multiple components, the prepared piezoresistive sensor exhibits outstanding performance, including high linear sensitivity (331 kPa −1 from 0 to 500 Pa, 126 kPa −1 from 500 Pa to 7.5 kPa), fast response time (load 71 ms, recovery 15 ms), and low detection limit (1.25 Pa). More importantly, it can maintain stable signal output even after 17 000 compression cycles. Furthermore, the prepared sensor can efficiently detect breathing, heartbeat, and vocalization of the human body in real time. Based on these advantages, the prepared sensor is expected to show significant potentials in future flexible wearable electronic devices.
研究领域:
材料科学
·
传感器技术
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Lin Wang,Meiyun Zhang,Bin Yang,Jiaojun Tan
Developing one-dimensional fiber-based sensors to meet the requirement of spinnability, portability, flexibility, and easeful conformability in smart wearable devices has attracted increasing interest. Here, we report highly conductive MXene@aramid nanofibers (ANFs) with a distinct skin-core structure by the wet spinning method. MXene, an emerging 2D conductive material, is applied to build internal conductive paths. ANF frameworks function as protective and skeleton structures to reduce the fiber oxidation probability and achieve superior strength. The obtained MXene@ANF fiber with superior conductivity (2515 S m–1) and tensile strength (130 MPa) works as a promising sensor for smart fabrics to detect different human movements with abundant detection motions, fast response time (100 ms), and long service life (up to 1000 cycles). Benefiting from its high flexibility, it can be sewn into textile and gloves as a smart wearable device. Besides superior thermal stability, it shows promising electrothermal properties with wide heating temperature (25–123 °C) and fast heating temperature (10 s). Therefore, the MXene@ANF fiber with the skin-core structure shows great potential as a promising sensor to be applied in electric heating and smart wearable fabrics.
研究领域:
材料科学
·
纺织工程
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Quan-Fu Li,Xu Chen,Hai Wang,Ming Liu,Hui-Ling Peng
Wearable non-invasive sensors facilitate the continuous measurement of glucose in sweat for the treatment and management of diabetes. However, the catalysis of glucose and sweat sampling are challenges in the development of efficient wearable glucose sensors. Herein, we report a flexible wearable non-enzymatic electrochemical sensor for continuous glucose detection in sweat. We synthesized a catalyst (Pt/MXene) by the hybridization of Pt nanoparticles onto MXene (Ti3C2Tx) nanosheets with a broad linear range of glucose detection (0–8 mmol/L) under neutral conditions. Furthermore, we optimized the structure of the sensor by immobilizing Pt/MXene with a conductive hydrogel to enhance the stability of the sensor. Based on Pt/MXene and the optimized structure, we fabricated a flexible wearable glucose sensor by integrating a microfluidic patch for sweat collection onto a flexible sensor. We evaluated the utility of the sensor for the detection of glucose in sweat, and the sensor could detect the glucose change with the replenishment and consumption of energy by the body, and a similar trend was observed in the blood. An in vivo glucose test in sweat indicated that the fabricated sensor is promising for the continuous measurement of glucose, which is essential for the treatment and management of diabetes.
研究领域:
生物医学工程
·
材料科学
·
糖尿病监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2023
·
IF 17.1
Yuan-Ming Cao,Yang Su,Mi Zheng,Peng Luo,Yang-Biao Xue,Bin-Bin Han,Min Zheng,Zuoshan Wang,Liang-Sheng Liao,Ming-Peng Zhuo
Flexible moisture–electric generators (MEGs) capture chemical energy from atmospheric moisture for sustainable electricity, gaining attention in wearable electronics. However, challenges persist in the large-scale integration and miniaturization of MEGs for long-term, high-power output. Herein, a vertical heterogeneous phase-engineering MoS2 nanosheet structure based silk and cotton were rationally designed and successfully applied to construct wearable MEGs for moisture–energy conversion. The prepared METs exhibit ∼0.8 V open-circuit voltage, ∼0.27 mA/cm2 current density for >10 h, and >36.12 μW/cm2 peak output power density, 3 orders higher than current standards. And the large-scale device realizes a current output of 0.145 A. An internal phase gradient between the 2H semiconductor MoS2 in carbonized silks and 1T metallic MoS2 in cotton fibers enables a phase-engineering-based heterogeneous electric double layer functioning as an equivalent parallel circuit, leading to enhanced high-power output. Owing to their facile customization for seamless adaptation to the human body, we envision exciting possibilities for these wearable METs as integrated self-power sources, enabling real-time monitoring of physiological parameters in wearable electronics.
研究领域:
材料科学
·
能源技术
·
纺织科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Zhuang Zhao,Youjie Rong,Pengdi Cui,Guoqing Qin,Huijie Wang,Xiaobo Huang
With the arrival of the era of the Internet of Everything and the popularization of flexible wearable devices, energy supply devices serving flexible wearable devices have also become a research hotspot. Hydrogels are gaining ground in the field of flexible energy supply devices, especially supercapacitors, which have attracted wide attention due to the advantages of fast charging/discharging, high power density, and stability. However, flexible supercapacitor inevitably undergoes varying degrees of deformation during use, and their service life decreases dramatically with the prolongation of use. Therefore, the fabrication of a flexible supercapacitor that can be assembled from hydrogel electrolyte and is fatigue-resistant and stable has become a promising research direction. In this study, we constructed a gel electrolyte with high stretchability, low hysteresis, high stability, and fatigue resistance by designing a dual network structure, and assembled it into a supercapacitor. The device has many excellent features, providing a surface capacitance of 100 mF/cm 2 , a power density of 0.19 mW/cm 2 , and an energy density of 425 μWh/cm 2 at a frequency of 1 mA/cm 2 . More importantly, it also exhibits superb stability when subjected to varying degrees of bending and compression. In addition, the gel electrolyte can detect small changes of the human body and quickly and sensitively convert motion signals into electrical signals, showing great potential as a flexible wearable device. This study provides an effective strategy for designing gel electrolytes with low hysteresis and high stability for wider application in flexible electronic devices.
研究领域:
材料科学
·
能源技术
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Yihan Wu,Yongqi Deng,Kefu Zhang,Jun Qiu,Juan Wu,Lifeng Yan
The aqueous zinc-ion hybrid supercapacitor (ZHSC) is a prospective energy storage device for next-generation wearable electronics due to its high safety, low cost, and high energy density. However, the preparation of gel electrolytes reported in the literature is complex and time-consuming, which limits their application in practice. Herein, we developed a robust and stretchable eutectogel electrolyte through a one-step gelation process in situ without introducing additional initiators and cross-linkers. The eutectogel electrolyte consists of ternary deep eutectic solvent (DES) based on Zn(ClO4)2, AM(acrylamide), and H2O, among which ClO4– triggers the free-radical polymerization of AM monomer and Zn2+ cross-links the polymer chains. The prepared Zn-PAM-1 gel exhibits a high ionic conductivity of 51.7 mS cm–1. Due to the inhibition of the free water activity in DES, the voltage window of the constructed flexible ZHSC was extended to 0–2.2 V. Moreover, the ZHSC in situ formed manifests a maximum energy density of 117.5 W h kg–1 at a power density of 833.8 W kg–1 and shows admirable cycling stability, retaining 87.6% of its capacitance after 4000 cycles. In addition, the supercapacitor possesses remarkable temperature stability within a range of −20 to 70 °C. Furthermore, the assembled flexible device illustrates favorable bendability from 0° to 180° without scarifying capacitance, displaying great promise as flexible wearable electronic devices. In summary, such a feasible approach provides further insight into the exploration of innovative eutectogel electrolyte systems for assembling quasi-solid-state pliable high energy storing devices.
研究领域:
材料科学
·
能源存储
·
化学工程
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Yanwen Liu,Lin Zhong,Shubo Zhang,Juan Wang,Zhihong Liu
Wearable electrochemical sensors have been extensively used for the non-invasive and quantitative on-body detection of biomarkers in sweat. However, the photoelectrochemical (PEC) sensor, which is an evolutionary generation of the electrochemical method and holds higher sensitivity and the ability to unbiased analysis, is rarely applied to construct flexible wearable sweat devices. Herein, we demonstrated a flexible PEC patch comprised of an ultrasensitive PEC sensor and a hydrophilic poly-(dimethylsiloxane) sweat collector for unbiased and high-performance sweat glucose detection. The proposed PEC sensor offered excellent durability against mechanical deformations , low detection limit (22.2 pM), desirable selectivity, and high storage stability. Moreover, the feasibility and accuracy of this wearable glucose sensor patch were validated through human subjects studies, and the obtained sweat glucose test results closely matched with the commercial kit and correlated well with the blood glucose level. Taken together, we could confirm the considerable promise of the unbiased wearable PEC sensor for patient-friendly diabetic diagnosis.
研究领域:
生物医学工程
·
传感技术
·
糖尿病诊断
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiuxiu Zou,Mengke Zhao,Kuizhong Shen,Chen Huang,Yiqiang Wu,Guigan Fang
Flexible, transparent and conductive materials applied to the electromagnetic interference (EMI) shielding of foldable and wearable devices is urgently demanded in fifth-generation internet era. However, it is still a great challenge to realize excellent EMI shielding effectiveness (EMI SE) while maintaining high light transmittance. Herein, a double-layered structure strategy was proposed to prepare transparent and conductive silver nanowires (AgNWs) film with outstanding EMI SE. Specifically, the AgNWs network was partially embedded to hydroxy propyl methyl cellulose (HPMC) coating to enhance greatly its connectivity and integrity. As a result, the AgNWs/HPMC film showed a high transmittance of 90.55% at 550 nm and a sheet resistance of 11.62 Ω/sq, much better than other reported AgNW composite films so far. Meanwhile, the structural design also contributed to a high EMI SE of 45.79 dB. Meanwhile, it exhibited an enhanced conductive stability during bending test and harsh environment, such as full-oxygen, thermal and cold environment. Moreover, the multifunctional AgNWs/HPMC film presented remarkable thermal management performances including safe heating temperature (~ 71.3 °C) at high supplied voltages (7 V), ultra-rapid response time (~ 11 s), long-term heating stability and reliability. This work presented a facile and scalable approach to obtain the flexible AgNWs/HPMC film with high light transmittance and high EMI SE, promising for the EMI shielding foldable and homoiothermy wearable system for human.
研究领域:
材料科学
·
纳米技术
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
eScience
·
2024
·
IF 42.9
Yan Gao,Xiao Chen,Xu Jin,Chenjun Zhang,Xi Zhang,Xiaodan Liu,Yinhui Li,Yang Li,Jinjie Lin,Hongyi Gao,Ge Wang
Developing advanced nanocomposite phase change materials (PCMs) integrating zero-energy thermal management, microwave absorption, photothermal therapy and electrical signal detection can promote the leapfrog development of flexible wearable electronic devices. For this goal, we propose a multidimensional collaborative strategy combining two-dimensional (2D) MXene nanosheets with metal-organic framework-derived one-dimensional (1D) carbon nanotubes (CNTs) and zero-dimensional (0D) metal nanoparticles. After encapsulating paraffin wax (PW) in three-dimensional (3D) networked multidimensional MXene/CoNi–C, the resulting composite PCMs exhibit excellent thermal energy storage capacity and long-term thermally reliable stability. Benefiting from the synergistically enhanced photothermal effects of CNTs, Co/Ni nanoparticles and MXene, PW@MXene/CoNi–C can capture photons efficiently and transfer phonons quickly, yielding an ultrahigh photothermal conversion and storage efficiency of 97.5%. Additionally, PW@MXene/CoNi–C composite PCMs exhibit high microwave absorption with a minimum reflection loss of −49.3 dB at 8.03 GHz in heat-related electronic application scenarios. More attractively, the corresponding flexible phase change film can simultaneously achieve thermal management and electromagnetic shielding of electronic devices, as well as photothermal therapy and electrical signal detection for individuals. This functional integration design provides an important reference for developing advanced flexible multifunctional wearable materials and devices.
研究领域:
材料科学
·
纳米技术
·
能源存储
·
电子工程
·
生物医学工程
✓ 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）