Nano Research
·
2024
·Vol. 17
·期 7
·6757-6765
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IF 9.5
Hang Tianyi,Zhou Lijie,Xu Chenhui,Chen Yiming,Shen Jiahui,Zheng Jiajia,Yang Pingan,Li Xiping,Luo Heng,Tong Guoxiu
With the accelerated development of modern detection and communication technology, the multifunctional wearable materials with excellent electromagnetic interference (EMI) shielding, infrared stealth, and human monitoring for improving military combat capability have received extensive attention. In this work, the lightweight melamine foam (MF)@silver nanowires (AgNWs)-iron nanowires (FeNWs) (AgFe-MF) was fabricated by a vacuum-assisted dip-coating method. Due to the porous structure and synergistic electrical and magnetic losses, this lightweight (0.115 g/cm 3 ) composite foam with an ultra-low filler content (0.62 vol.%) exhibited an ideal EMI shielding efficiency of 38.4 dB. On the other hand, the AgFe-MF realized a powerful multifunctional integration. The surface saturation temperature of the AgFe-MF reached 94.2 °C under a low applied voltage of 1.8 V and remained extremely fast heating and cooling response and terrific working stability, resulting in excellent infrared stealth and camouflage effects. Furthermore, taking virtues of the elastic porous conductive architecture, the AgFe-MF was utilized as a piezoresistive sensor exhibiting board compressive interval of 0–1.62 kPa (50% strain) with a good sensitivity of 0.57 kPa −1 . This work will provide new ideas and insights for developing multifunctional wearable devices in the fields of EMI shielding, thermal management, and piezoresistive sensing.
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NATURE
·
2024
·Vol. 631
·期 8019
·73-79
·
IF 50.5
Kong Lingmei,Sun Yuqi,Zhao Bin,Ji Kangyu,Feng Jie,Dong Jianchao,Wang Yuanzhi,Liu Zirui,Maqbool Shabnum,Li Yunguo,Yang Yingguo,Dai Linjie,Lee Wanhee,Cho Changsoon,Stranks Samuel D.,Friend Richard H.,Wang Ning,Greenham Neil C.,Yang Xuyong
Light-emitting diodes (LEDs) based on metal halide perovskites (PeLEDs) with high colour quality and facile solution processing are promising candidates for full-colour and high-definition displays 1 , 2 , 3 , 4 . Despite the great success achieved in green PeLEDs with lead bromide perovskites 5 , it is still challenging to realize pure-red (620–650 nm) LEDs using iodine-based counterparts, as they are constrained by the low intrinsic bandgap 6 . Here we report efficient and colour-stable PeLEDs across the entire pure-red region, with a peak external quantum efficiency reaching 28.7% at 638 nm, enabled by incorporating a double-end anchored ligand molecule into pure-iodine perovskites. We demonstrate that a key function of the organic intercalating cation is to stabilize the lead iodine octahedron through coordination with exposed lead ions and enhanced hydrogen bonding with iodine. The molecule synergistically facilitates spectral modulation, promotes charge transfer between perovskite quantum wells and reduces iodine migration under electrical bias. We realize continuously tunable emission wavelengths for iodine-based perovskite films with suppressed energy loss due to the decrease in bond energy of lead iodine in ionic perovskites as the bandgap increases. Importantly, the resultant devices show outstanding spectral stability and a half-lifetime of more than 7,600 min at an initial luminance of 100 cd m −2 .
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npj Flexible Electronics
·
2024
·Vol. 8
·期 1
·1-16
·
IF 12.3
Deng Mengkang,Du Chentao,Fang Jiayuan,Xu Changshun,Guo Chenhui,Huang Jiantao,Li Kang,Chen Lei,Zhang Yuan-Ting,Chang Yu,Pan Tingrui
Continuous hemodynamic monitoring in a wearable means can play a crucial role in managing hypertension and preventing catastrophic cardiovascular events. In this study, we have described the fully wearable tonometric device, referred to as flexible adaptive sensing tonometry (FAST), which is capable of continuous and accurate monitoring of hemodynamic parameters within the medical-grade precision. In particular, the FAST system integrates a 1 × 8 unit array of highly sensitive and highly flexible iontronic sensing (FITS) with 1 mm spatial resolution and a closed-loop motion system. The flexible tonometric architecture has been used to determine the radial arterial position with high sensitivity and high conformability, which simplifies the biaxial searching process of the traditional applanation tonometry into a highly efficient uniaxial applanation while keeping the medical-precision assessments. Importantly, a self-calibration algorithm can be automatically implemented during the applanation process, from which the intra-arterial blood pressure wave can be continuously predicted within the medical-grade precision, and subsequently, multi-parametric hemodynamic analysis can be performed in real-time. Experimental validations on health volunteers have demonstrated that the FAST measurements are all within the required accuracy of the clinical standards for continuous pulse wave assessments, blood pressure monitoring as well as other key hemodynamic parameter evaluations. Therefore, the FAST system, by integrating the flexible iontronic sensing array, provides a real-time, medical-grade hemodynamic monitoring solution in a continuously wearable manner, from which remote patient-centered monitoring can be delivered with both medical precision and convenience.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2024
·
IF 2.6
Hui Yuchen,Fei Cheng,Zhang Zhongguo,Fan Shuang,Wang Huixin,Fan Wei,Chang Wei
This study fabricated a flexible and washable self-powered biosensor—based on cellulose textiles—for sensing glucose in sweat. The sensor is integrated with T-shirts for practical use. The cellulose fiber was modified with carbon nanotubes and reduced oxide graphene to decrease its electron transfer resistance and ohmic resistance. Due to their low resistance, the bioelectrodes display high electrocatalytic efficiency of glucose oxidation and oxygen reduction. The biosensors are assembled by packaging the bioanodes and gel electrolytes together. The assembled biosensors have a low limit of detection (6.7 µM) and a wide linear range (0.02–0.5 mM). The great sensing performances are strongly associated with the location of bioanodes and biocathodes. The outer biocathode protects the central bioanode that comes from oxygen and ensures the structural integrity of the device during bending cycles. It also reduces the damage caused by the washing. The biosensor also exhibited selectivity, repeatability, and great stability in different pHs and during long-term storage. Finally, the average recoveries in real sweat are 104.9 to 106.0%. Thus, the flexible and washable self-powered biosensors have great potential for diabetes diagnosis at an early stage by sensing glucose in sweat. Graphical abstract
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 29
·1-11
·
IF 2.8
Wang Junru,Xia Guoxiang,Xia Longquan,Chen Yunfeng,Li Qinyuan,Zeng Hong,Yang Weiguo,Du Yongjie,He Wei,Chen Yuanming
Flexible wearable devices for health monitoring require continuous wear throughout the day, making flexible pressure sensors a critical component that has attracted significant attention. Polyacrylamide (PAM) and polyvinyl alcohol (PVA) were used as hydrogel substrate materials to fabricate wearable devices with on-the-go wearability. Helical carbon nanotubes (HCNTs) were employed as conductive fillers, with silver nanoparticles (AgNPs) deposited on their surface to enhance conductivity. The conductive HCNT/AgNPs fillers bonded with the PVA/PAM substrate via metal–hydrogen bonds, metal complexes, and Ag–O bonds. This bonding enhanced the binding strength of the gel and accelerated polymerization. Pressure sensors packaged within the hydrogel exhibited high sensitivity of 0.118 kPa –1 to minor deformations and high sensitivity of 0.0141 kPa –1 to regular deformations, providing a flexible pressure sensor with high sensitivity and fast response. This innovation delivers a highly sensitive and fast-responding flexible pressure sensor, paving the way for advanced flexible wearable electronic devices.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-17
·
IF 14.7
Li Jinxin,Wu Honghui,Yu Zebin,Wang Qiwei,Zeng Xin,Qian Wenchang,Lu Siqi,Jiang Lingli,Li Jingyi,Zhu Meng,Han Yingli,Gao Jianqing,Qian Pengxu
Leukemia is a kind of hematological malignancy originating from bone marrow, which provides essential signals for initiation, progression, and recurrence of leukemia. However, how to specifically deliver drugs to the bone marrow remains elusive. Here, we develop biomimetic vesicles by infusing hematopoietic stem and progenitor cell (HSPC) membrane with liposomes (HSPC liposomes), which migrate to the bone marrow of leukemic mice via hyaluronic acid-CD44 axis. Moreover, the biomimetic vesicles exhibit superior binding affinity to leukemia cells through intercellular cell adhesion molecule-1 (ICAM-1)/integrin β2 (ITGB2) interaction. Further experiments validate that the vesicles carrying chemotherapy drug cytarabine (Ara-C@HSPC-Lipo) markedly inhibit proliferation, induce apoptosis and differentiation of leukemia cells, and decrease number of leukemia stem cells. Mechanically, RNA-seq reveals that Ara-C@HSPC-Lipo treatment induces apoptosis and differentiation and inhibits the oncogenic pathways. Finally, we verify that HSPC liposomes are safe in mice. This study provides a method for targeting bone marrow and treating leukemia.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
·
IF 15.7
Liu Lu,Li Xiurong,Chen Yongxian,Gao Junbin,Jiang Yuejun,Ye Yicheng,Wang Peng,Peng Fei,Tu Yingfeng
Uricase (UOx)-based gout treatments are generally limited due in part to the accumulation of H 2 O 2 in an arthrosis environment characterized by a sluggish metabolism. Here we develop a self-cascade nanomotor with high efficiency toward simultaneous uric acid (UA) degradation and H 2 O 2 elimination on the basis of UOx and sodium citrate loading in amine functionalized hollow mesoporous silica nanoparticles (AHMSNs). Due to the inherent asymmetry of AHMSNs, the developed nanomotors can be actuated by ionic diffusiophoresis induced by the enzymatic UA degradation, thus enlarging the diffusion range within the joint cavity. H 2 O 2 generated during UA decomposition can be simultaneously eliminated by the loaded sodium citrate, resulting in a considerable improvement in mammalian cell viability. In vivo studies display powerful therapeutic effect in gouty models using this self-cascade nanomotor system. These results present the potential of nanomotors as active therapeutic agents for gout, providing a perspective on the application of enzyme-driven micro/nanomotors.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 14
·1-9
·
IF 2.8
Wang Xiaoyu,Ali Nasir,Bi Gang,He Lenian
Bismuth-based lead-free perovskite is one of the most popular research fields in halide perovskites. However, due to the valence of Bi 3+ , Bi-based perovskite has non-cubic crystal structure, causing the film quality poor and hindering further applications. In this work, taking advantage of long-chain organic cation, i.e., phenylethylamine cation, (PEA + ), we have fabricated high-quality bismuth halide perovskite (PEA) 3 Bi 2 I 9 film, assisted by vacuum treatment, and investigated the characteristic differences between Cs 3 Bi 2 I 9 and (PEA) 3 Bi 2 I 9 . First-principle calculation has been employed next, which distinguishes the discrepancies theoretically and confirms the experimental results. Furthermore, resistive switching memory devices based on high-quality (PEA) 3 Bi 2 I 9 film have been fabricated, and clear resistive switching behaviors are observed, showing ON/OFF ratio about 100 and retention time above 10 3 s.
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INFLAMMOPHARMACOLOGY
·
2024
·
IF 4.6
Miao Lurong,Yuan Ziqi,Zhang Shijia,Zhang Guangqin
Objective To investigate whether honokiol (HNK) acted as an analgesic in connection with inhibiting the voltage-gated proton channel (Hv1). Methods The model of gouty arthritis was induced by injecting monosodium urate (MSU) crystals into the hind ankle joint of mice. HNK was given by intragastric administration. Ankle swelling degree and mechanical allodynia were evaluated using ankle joint circumference measurement and von Frey filaments, respectively. Hv1 current, tail current, and action potential in dorsal root ganglion (DRG) neurons were recorded with patch-clamp techniques. Results HNK (10, 20, 40 mg/kg) alleviated inflammatory response and mechanical allodynia in a dose-dependent manner. In normal DRG neurons, 50 µM Zn 2+ or 2-GBI significantly inhibited the Hv1 current and the current density of Hv1 increased with increasing pH gradient. The amplitude of Hv1 current significantly increased on the 3rd after MSU treatment, and HNK dose-dependently reversed the upregulation of Hv1 current. Compared with MSU group, 40 mg/kg HNK shifted the activation curve to the direction of more positive voltage and increased reversal potential to the normal level. In addition, 40 mg/kg HNK reversed the down-regulation of tail current deactivation time constant ( τ tail ) but did not alter the neuronal excitability of DRG neurons in gouty mice. Conclusion HNK may be a potential analgesic by inhibiting Hv1 current.
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Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 2
·1-20
·
IF 21.8
Yan Feihong,Li Ruiyuan,Liu Jiaxin,Yang Lulu,Liu Helin,Zhu Shengcang,Zhang Yuhui,Wang Lijun,Huang Lu,Wang Yu,Qin Yaqiang,Zhang Yuhang,Wang Xin,Wang Yuan,Zhang Jianping,Sha Yinlin,Fu Limin,Liu Zhiyong,Han Rongcheng,Jiang Yuqiang
The development of a multifunctional therapy nanoplatform is of crucial importance to tackle the complex challenges associated with cancer. Despite significant advancements in tumor treatment, the efficacy of these traditional approaches remains insufficient. Recurrence and metastasis following tumor treatment continue to represent a significant contributor to tumor-related mortality. This paper presents an improved, facile, and relatively green fabrication of (5-mercapto-1,3,4-thiadiazol-2-ylthio) acetic acid (TMT)-coated luminescent gold nanoparticles (L-AuNP@TMT), which exhibit highly membrane-targeting capacity and superior photodynamic properties. Furthermore, in vivo tumor-bearing mouse model experiments indicated that the L-AuNP@TMT could be used as a two-photon excited nanomedicine via pyroptosis-mediated anti-tumor immunity for effectively eliminating colorectal cancer (CRC), the third most common malignancy and the second deadliest cancer, without evident toxic side effects or tumor metastasis/recurrence. According to its facile and green fabrication approach, near-infrared light-activatable highly efficient photodynamic cancer therapy, and noninvasive imaging mode, this multifunctional nanoplatform offers significant advantages over traditional monotherapy techniques, providing an alternative for the precise clinical treatment of cancer.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-7
·
IF 15.7
Yao Aiping,Xu Hongliang,Shao Kuizhan,Sun Chunyi,Qin Chao,Wang Xinlong,Su Zhongmin
Soft porous crystals, recognized as the third generation of smart porous materials, can undergo structural deformations in response to external stimuli, such as temperature, pressure, and guest molecules. Currently, the dynamic phase transformations of soft porous crystals are predominantly determined through quantitative modeling based on gas adsorption and powder X-ray diffraction. Herein, we investigate the single-crystal-to-single-crystal structural transformation of covalent organic soft porous crystal modeled on COF-300 and identified nine distinct conformational isomers induced by different guest molecules at room and high temperatures. Notably, COF-300 can maintain its single-crystal structure even at 280 °C and efficiently absorbs polycyclic aromatic hydrocarbons in their molten state. The kinetics of structural transformations among conformational isomers are investigated by combining PXRD and theoretical calculations. The structural transformation from a high-energy state to a low-energy state is a rapid, energetically favorable process, while the reverse transformation is a slow process driven by concentration gradients.
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Nano Research
·
2024
·
IF 9.5
Su Jihao,Yang Ling,Yu Dengbin,Dong Shaojun
A significant challenge in developing high-performance hybrid supercapacitors (HSCs) is the need to reasonably construct advanced architectures that consist of various components and exhibit superior electrochemical capacitance performance. The FeCoNi-layered double hydroxide (FeCoNi-LDH) porous material has a specific capacitance of 1960 F·g −1 when used as the anode material at 1 A·g −1 . The FeCoNi-LDH material exhibits nanoplates with a distinct spindle morphology on their surface. Due to the combined action of the three metals and abundant oxygen vacancies, they exhibit unique rate performance and cycle stability. The electronic structure of LDH and the regulation of oxygen vacancy were confirmed by density functional theory (DFT) calculations. This suggests that the strength of hydroxide can reduce the energy required for oxygen vacancy formation in FeCoNi-LDH nanosheets and enhance ion and charge transfer, as well as electrolyte adsorption on the electrode surface. The FeCoNi-LDH//activated carbon (AC) HSC has an energy density of 53.2 Wh·kg −1 at a power density of 800 W·kg −1 , surpassing other devices composed of comparable materials during the same timeframe. This study made significant advances in the design and synthesis of a ternary LDH porous structure with distinct oxygen vacancies, as well as its potential application in electrochemical energy storage.
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