Surfaces and Interfaces
·
2025
·
IF 6.3
Jie Chen,Zhen-Zhen Lu,Jing Jin,Dong-Yang Zhang,Tao Chen,Wei-Guo Zhao,Xiao-Hui Yao
Flexible pressure sensors are known for their excellent comprehensive performance, making them suitable for a wide range of applications, including in human–machine interfaces, health monitoring, motion detection, wearable electronics, medical devices, and soft robotics. However, the preparation of silk nanofibers (SNFs)-based aerogel sensors with optimal resilience remains challenging. Herein, the SNF/ polyvinyl alcohol (PVA)/MXene composite aerogel was prepared via freeze-drying using SNF, MXene and PVA as raw materials. In this study, PVA was innovatively used as a binder to connect dispersed SNFs, which improved the resilience and mechanical properties of aerogel. The resulting composite aerogel can function as a pressure sensor that exhibits excellent efficacy owing to the synergies among its various components, achieving an impressive gauge factor of 24.61 at a compression strain of 40 %–50 %. The composite aerogel–based sensors also exhibited a rapid response time (load 100 ms, recovery 200 ms), and good stability (1000 cycles). They demonstrated a quick response to pressure and strain signals, enabling them to accurately monitor various human activities such as sound detection, wrist and finger movements, and knee bending.
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高影响因子
Matter
·
2022
·
IF 19.967
Xianghong Zhang,Shengyuan Wu,Rengjian Yu,Enlong Li,Di Liu,Changsong Gao,Yuanyuan Hu,Tailiang Guo,Huipeng Chen
Developing a high-efficiency neuromorphic hardware network is essential to achieve complex artificial intelligence. Here, for the first time, we propose a multi-neuromorphic functional device based on the 2D material Mxene—a switchable neuronal-synaptic transistor (SNST) that can be programmed to realize synaptic or neuronal function—and break the boundaries between neuronal and synaptic modules for a high-efficiency neuromorphic network, including fabrication efficiency, resource utilization efficiency, and operational efficiency. A neural network composed of multiple SNSTs is designed for authenticity data recognition that can equitably redistribute the neuromorphic hardware sources and adjust the topological structure of the hardware network, improving operational speed and reducing the number of devices in the network. Finally, an SNST-based hardware system is developed for facial recognition with a recognition accuracy of about 80%. This work demonstrates that programmable SNST-based neuromorphic chips with a simple fabrication process, equitable resource utilization, and high operational speed have great potential for highly efficient and accurate neuromorphic networks.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 43
·2304456
·
IF 19
Xu Cai,Yu Xiao,Bingwen Zhang,Yanhui Yang,Jun Wang,Huamin Chen,Guozhen Shen
MXene materials emerge as promising candidates for energy harvesting and storage application. In this study, the effect of the surface chemistry on the work function of MXenes, which determines the performance of MXene-based triboelectric nanogenerator (TENG), is elucidated. First-principles calculations reveal that the surface functional group greatly influences MXene work function: OH termination reduces the work function with respect to that of bare surface, while F and Cl increase it. Then, work functions are experimentally determined by Kelvin probe force microscopy. The MXene prepared by gentle etching at 40 °C for 48 h (GE 40/48 ) has the largest work function. Furthermore, an electron-cloud potential-well model is established to explain the mechanism of electron emission-dominated charge transfer and assemble a triboelectric device to verify experimentally its conclusions. It is found that GE 40/48 has the best performance with a 281 V open-circuit voltage, 9.7 µ A short-current current, and storing 1.019 µ C of charge, which is consistent with the model. Last, a patterned TENG is demonstrated for self-powered human–machine interaction application. This finding enhances the understanding of the inherent mechanism between the surface structure and the output performance of MXene-based TENG, which can be applied to other TENG based on 2D materials.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jiabei Li,Shuo Li,Lijuan Xie,Ziyao Wang,Xi Yang,Donghang Li,Xiaohong Li
Continuous and reliable monitoring of ammonia (NH 3 ) biomarkers in exhaled breath holds critical significance for the diagnosis of kidney diseases. However, existing NH 3 sensors often suffer from interference by ambient water molecules, limiting their applications in monitoring exhaled breath with high humidity. In this work, a water-vapor-assisted sensing mechanism is proposed, and a humidity-enhanced flexible NH 3 sensor capable of detecting NH 3 at concentrations as low as 250 ppb in exhaled breath is developed. By integrating hydrothermally synthesized indium oxide (In 2 O 3 ) nanoparticles with delaminated monolayer MXene (Ti 3 C 2 ) nanosheets, a stable heterojunction structure is constructed, which underpins the sensor's performance. Through a streamlined integration strategy, the MXene/In 2 O 3 composite is combined with cotton fibers to fabricate a flexible and wearable NH 3 sensor. This device demonstrates superior gas-sensing characteristics under ambient temperature and high-humidity conditions, yielding a response of 70.64% and a response time of 178 s. Furthermore, the flexible sensor is embedded into a KN95 mask to develop an intelligent breath analysis system. By applying machine learning algorithms to model and classify breath samples, a detection accuracy of 94% in real-world clinical testing is achieved. These results underscore the sensor's substantial potential for non-invasive early screening and home-based diagnosis of kidney diseases.
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高影响因子
Science Bulletin
·
2025
·
IF 21.1
Hailin Lu,Mengjie Wang,Zhiwei Chen,Gengchen Yu,Yanan Ma,Li Wen,Yang Yue,Siliang Wang
Human-machine intelligent interaction (HMII) technology, which is an advanced iteration of human-machine interaction technology, has garnered widespread attention owing to its significant achievements in healthcare and virtual reality research. Nonetheless, these fields often depend on elaborate multi-sensor integrations and face challenges in achieving precise control over robotic manipulation. Herein, a novel transistor-like iontronics pressure sensor based on an MXene/Bi 2D heterojunction is proposed. This transistor-like, flexible, all-solid-state, self-powered iontronics device exhibited a fast response time (66.59 ms), long lifetime (up to 50,000 cycles), and static/dynamic response with linear sensitivity. A deep-learning-assisted single-device HMII system was further constructed. Crucially, the system is adept at monitoring subtle skin deformations triggered by the median and ulnar nerves, efficient real-time decoding of sophisticated hand gestures (recognition accuracy of 95.83%), and precise control of robotic hands using tactile perception feedback. This approach addresses the inherent redundancy in multi-sensor devices used to decode motion across multiple finger joints, marking a significant step forward for iontronics in enhancing the perceptual interaction between humans and machines.
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高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Changlong Jiang,Yitong Yue,Yiming Wang,Bing Zhou,Gaojie Han,Ming Huang,Yuezhan Feng,Chuntai Liu
Low-reflection electromagnetic interference (EMI) shielding materials have attracted increasing attention due to their capability to prevent secondary electromagnetic pollution, yet simultaneously achieving high EMI shielding effectiveness (SE) and low reflection remains a major challenge. In this study, heterostructure MXene@Ni hybrids were first synthesized, followed by the fabrication of a multilayered MXene@Ni/ANF film with an electro-magnetic dual-gradient structure via a layer-by-layer vacuum-assisted filtration process. The electro-magnetic dual-gradient structure was achieved by precisely controlling the MXene-to-Ni loading ratio and implementing a specific filtration sequence. The engineered gradient layered structure regulate the electromagnetic properties by modulating the mass ratio of MXene to Ni in each MXene@Ni/ANF layers. As a result, the composite film with precise control of the electro-magnetic gradient transition layers and reflection layer achieved excellent impedance matching and electromagnetic wave dissipation, ultimately resulting in remarkably efficient EMI shielding performance (37.6 dB) with low reflection characteristic (a low reflection coefficient of 0.72). This optimized structure ensures efficient electromagnetic wave absorption with minimal reflection, making it highly suitable for advanced EMI shielding applications.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Langjin Zhang,Yingwen Wang,Yubing Jiao,Min Mao,Weiliang Xiong,Yingjie Zhang,Youning Wang,Songbai Zhang,Wei Zhang,Jinguang Yang
Pathogenic bacteria represent a considerable threat to public health and food safety, necessitating the development of advanced detection methodologies. In this study, a novel fluorescence sensing platform based on fluorescence resonance energy transfer (FRET) was established to detect Pathogenic bacteria with rapid response, exceptional sensitivity, and stable selectivity. Using carboxyl-modified Ti 3 C 2 T x MXene (Ti 3 C 2 T x -COOH) as nanocarriers, double-stranded DNA (dsDNA) were assembled to functionalize the MXene for rapidly efficient quenching of fluorescence dye-labeled aptamers and specific recognition of target bacteria. Upon the incorporation of target bacteria, the aptamer preferentially bound to bacteria, dissociating from the MXene and resulting in a significant and rapid increase in fluorescence intensity. Using E. coli O157:H7 and S. aureus as exemplar biotargets, the sensor demonstrated ultra-sensitive detection of E. coli O157:H7 and S. aureus with limits of detection (LOD, S/N = 3) as low as 0.61 CFU/mL and 1.62 CFU/mL, respectively, within a rapid response time of 15 min, thereby demonstrating superior performance in comparison to the majority of existing FRET-based biosensors. Moreover, this method demonstrates excellent reproducibility and stability, having been successfully applied to spiked milk samples. The recovery rates for S. aureus ranged from 90.2 % to 114.3 %, with acceptable RSDs of 1.4 % to 7.4 %, while those for E. coli O157:H7 ranged from 91.7 % to 93.6 %, with acceptable RSDs of 5.2 % to 8.7 %, confirming its strong potential for practical sample analysis. The present study establishes a foundational framework for subsequent research into biosensors for detecting targets and provides a new pathway for the analysis of other biological factors.
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Nanoscale
·
2025
·
IF 5.1
Ying Cao,Shihao Deng,Shuang Xia,Ju Bai,Yuan Shen,Ting Zhang,Tie Li
Humanoid robots, except the sensing requirement of force and temperature, will get high risk of prolonged exposure to complex light conditions, especially the UV radiation in automotive baking workshop, outer space, et. al, which will make the circuits and electronic components extremely prone to aging, needing timely assessment as well. Here, a multimodal flexible tactile sensor is assembled by utilizing a novel melamine sponge-MXene@CsPbBr3 hybrid aerogel as the sensing unit, which the melamine sponge provides the deformable support skeleton, the MXene realizes the functions of piezoresistive pressure sensing and thermoelectric temperature detecting, and the CsPbBr3 realizes not only the light sensing behavior, especially the visual capacity of ultraviolet excited photoluminescence, but also the synergetic enhancement of thermoelectric ability. Via these different kinds of sensing mechanisms, the derived flexible tactile sensor realizes the multimodal response to pressure, temperature and ultraviolet without cross-coupling. Furthermore, via using a machine learning algorithm, it can distinguish hardness and material of six automotive parts with high recognition accuracy of 98.2 % and 98.6 %, respectively. Moreover, based on the visual photoluminescence capability, a sensory array is assembled to successfully recognize different shapes. These provides a feasible way to protect the robots when using in complex operating environments.
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高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-17
·
IF 36.3
Guo Jinglun,Zhang Tianyi,Hao Xiaoyu,Liu Shuaijie,Zou Yuxin,Li Jinjin,Wu Wei,Chen Liming,Liu Xuqing
Conductive hydrogels have garnered widespread attention as a versatile class of flexible electronics. Despite considerable advancements, current methodologies struggle to reconcile the fundamental trade-off between high conductivity and effective absorption-dominated electromagnetic interference (EMI) shielding, as dictated by classical impedance matching theory. This study addresses these limitations by introducing a novel synthesis of aramid nanofiber/MXene-reinforced polyelectrolyte hydrogels. Leveraging the unique properties of polyelectrolytes, this innovative approach enhances ionic conductivity and exploits the hydration effect of hydrophilic polar groups to induce the formation of intermediate water. This critical innovation facilitates polarization relaxation and rearrangement in response to electromagnetic fields, thereby significantly enhancing the EMI shielding effectiveness of hydrogels. The electromagnetic wave attenuation capacity of these hydrogels was thoroughly evaluated across both X-band and terahertz band frequencies, with further investigation into the impact of varying water content states—hydrated, dried, and frozen—on their electromagnetic properties. Moreover, the hydrogels exhibited promising capabilities beyond mere EMI shielding; they also served effectively as strain sensors for monitoring human motions, indicating their potential applicability in wearable electronics. This work provides a new approach to designing multifunctional hydrogels, advancing the integration of flexible, multifunctional materials in modern electronics, with potential applications in both EMI shielding and wearable technology.
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高影响因子
Advanced Healthcare Materials
·
2025
·
IF 9.6
Liqin Wu,Xi Luo,Pengpeng Yue,Kalibinuer Yasen,Zibiao Zhong,Shuangquan Wu,Qifa Ye
The accumulation of uremic toxins, which ultimately leads to renal failure, results in systemic complications and necessitates efficient and biocompatible removal strategies. This paper presents the preparation of a biomimetic anisotropic aerogel composed of polyvinyl alcohol (PVA), sodium alginate (SA), and MXenes (Ti 3 C 2 T X ) via directional freezing. Inspired by plant vascular bundles, the resulting vertically aligned porous structure enhances the mechanical stability of and mass transfer in the material. The aerogel with its high MXene loading and high surface utilization offers remarkable adsorption capacities for urea (221.77 mg g −1 ) and creatinine (138.07 mg g −1 ). In vitro assays confirm the excellent hemo- and cytocompatibility of the aerogel. In a rabbit model of acute ischemic kidney injury, two-hour hemoperfusion with the aerogel significantly lowers the urea (38.67 to 16.17 mmol L −1 ) and creatinine levels (744.62 to 307.46 µmol L −1 ) without observable toxicity. The multidimensional biomimetic multipore anisotropic MXene aerogel presented here is a structurally optimized and biologically safe adsorbent for efficient uremic toxin clearance and a promising alternative to conventional hemodialysis.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Tianrui Cui,Yancong Qiao,Ding Li,Xiaorui Huang,Le Yang,Anzhi Yan,Zhikang Chen,Jiandong Xu,Xichao Tan,Jinming Jian,Zhen Li,Shourui Ji,Houfang Liu,Yi Yang,Xuegong Zhang,Tian-Ling Ren
With the advent of an aging society and increasing concern for cardiovascular health, comfortable long-term electrocardiographic (ECG) monitoring systems in daily life are much in demand. If the system can give real-time feedback on cardiovascular status and offer timely personalized advice like doctors, it will be beneficial to promote cardiovascular health and alleviate the imbalance of medical resources. Herein, we report a multifunctional, conformal, and air-permeable electronic skin (e-skin) based on MXene-Polyurethane mesh (MPM). When used as ECG electrodes, the e-skin shows ultra-low electrode–skin contact impedance (4.68 kΩ at 1 kHz), high signal-to-noise ratio (16.5 dB), and high breathability (2.1838 kg/m 2 /day), and can be continuously worn for at least 7 days. As a strain sensor, the e-skin exhibits a large measurement range (>40 %) and unique segmental sensitivity (GF = 172.54 in 0 ∼ 18.64 % and 79.38 in 18.64 ∼ 50 %), which is suitable for detecting both subtle and large physiological signals. More significantly, by combining the MPM e-skin with a flexible printed circuit board (FPCB) and a merged convolutional neural network & long-short-term memory (CNN & LSTM) intelligent algorithm, the acquired wearable intelligent e-skin system can realize daily 12-hour 12-lead ECG monitoring with diagnostic accuracy over 99 % for four arrhythmias. These results show that the MPM e-skin has huge potential in multifunctional intelligent healthcare systems. In particular, an intelligent ECG system similar to a “daily doctor” is proposed for daily long-term cardiovascular health monitoring.
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Batteries & Supercaps
·
2020
·Vol. 3
·期 9
·892-899
·
IF 0
Wantang Li,Yifang Zhang,Huan Li,Zijin Chen,Tongxin Shang,Zhitan Wu,Chen Zhang,Jia Li,Wei Lv,Ying Tao,Quan-Hong Yang
The shuttle effect of lithium polysulfides (LiPSs) from sulfur cathode to lithium (Li) anode is one of the main obstacles for lithium-sulfur (Li−S) batteries. The severe corrosion of Li metal anode by the dissolved LiPSs bottlenecks the efficient operation of Li−S batteries, however, the anode part has not been received much attention compared to those extensive efforts related to the cathode designs. Herein, we show that the interface between Ti 3 C 2 T x (T=−OH, −F)-based MXene and reduced graphene oxide (rGO) is able to guide uniform Li nucleation, promoting highly reversible and dendrite-free Li plating/stripping. Such the Li anode demonstrates excellent cycling stability for more than 1000 hours even under ultra-high rate (10 mA cm −2 ) and high areal capacity (3 mAh cm −2 ). More importantly, the well-designed 2D layered structure by coupling the Ti 3 C 2 T x with a graphene scaffold, is highly efficient to block the shuttled polysulfides and inhibit the corrosion of the lithium metal anode. As a result, the Li−S full battery exhibits a stable cycling stability with a high Coulombic efficiency of 99.8 % over 300 cycles. This work suggests the design strategy of Li metal anode especially targeting at the sulfur cathode, and we hope it can provide valuable inspirations for the future design of Li metal anodes for more practical Li−S batteries. Graphical MXene shield : The rGO/Ti 3 C 2 T x interfaces favor Li nucleation and deposition, contributing to dendrite-free Li plating/stripping behaviors inside the scaffold. The membrane also mitigates the side reactions of Li by blocking the shuttled lithium polysulfides, which promotes the efficient cycling of Li−S batteries.
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