ADVANCED FUNCTIONAL MATERIALS
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2024
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IF 18.5
Jianhua Xiao,Jiaao Wu,Fangchen Zhu,Jiehao Ke,Qingxia Liu,Yang Wang,Liu Yuan,Huiling Tai,Yadong Jiang
Bias-switchable dual-mode organic photodiodes (OPDs) that integrate photovoltaic and photomultiplication modes are recently developed and shown prospects in complex light-intensity applications. Yet, the device physics that focuses on carrier dynamics is still a challenge and needs to be further explored. Herein, dual-mode OPDs are developed through interface layer manipulation, that is, introducing cathode interface layers (typically, Zn x O:D149) with deep energy levels and abundant bulk defects and an anode interface layer of thermally-evaporated ZnO (e-ZnO) with a wide bandgap. Under reverse bias, Zn x O:D149 forms a barrier wall to effectively block external holes and maintain the photovoltaic mode of the OPDs. Under forward bias, the capturing effect of Zn x O:D149 and blocking effect of e-ZnO help to reduce the dark current; when under illumination, defect traps capture photo-generated holes, eliminating the barrier traps and promoting unobstructed injection of external carriers to achieve photomultiplication effect. The typical device delivers high specific detectivity (>10 12 Jones) and fast response (<40 µs), and exhibits disparate external quantum efficiency in two operating modes, showing promise for simultaneously detecting faint and strong light. This general strategy for preparing dual-mode OPDs is compatible with CMOS processing technology and meets the miniaturization and integration requirements of next-generation detection systems.
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CERAMICS INTERNATIONAL
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2024
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IF 5.1
Naiqiang Wang,Xiaoqing Si,Baiqi Zhang,Jianwei Gao,Mingsheng Li,Tong Lin,Rui Li,Chun Li,Junlei Qi,Jian Cao
A novel sintered-joining of Al 2 O 3 and AlN is achieved for the first time using micro-Ag particle interlayers in air. In comparison with reactive air brazing , this method addresses the issue of reduced strength caused by air holes in brazed joints . Also, this sintered-joining method can be performed at a lower temperature (920 °C), improving the joint strength by relieving the residual stresses. The sintering effect of micro-Ag particles and their high density of dislocations promote the recovery and recrystallization of the Ag interlayer, as well as the interdiffusion of Ag and ceramic. Ag–O clusters formed at the interface can be embedded into oxygen vacancies on the ceramic surface, playing a key role in interfacial joining. By optimizing joining temperature, assembly pressure and holding time, a maximum joint shear strength of 85.2 MPa is achieved at 920 °C for 30 min with an assembly pressure of 1 MPa. This study successfully prepares Al 2 O 3 /AlN joints with excellent mechanical properties, providing a reliable foundation for the fabrication of power integrated circuits with efficient operation.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
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IF 14.7
Mao Qian,Liao Zijian,Yuan Jinfeng,Zhu Rong
As robots are increasingly participating in our daily lives, the quests to mimic human abilities have driven the advancements of robotic multimodal senses. However, current perceptual technologies still unsatisfied robotic needs for home tasks/environments, particularly facing great challenges in multisensory integration and fusion, rapid response capability, and highly sensitive perception. Here, we report a flexible tactile sensor utilizing thin-film thermistors to implement multimodal perceptions of pressure, temperature, matter thermal property, texture, and slippage. Notably, the tactile sensor is endowed with an ultrasensitive (0.05 mm/s) and ultrafast (4 ms) slip sensing that is indispensable for dexterous and reliable grasping control to avoid crushing fragile objects or dropping slippery objects. We further propose and develop a robotic tactile-visual fusion architecture that seamlessly encompasses multimodal sensations from the bottom level to robotic decision-making at the top level. A series of intelligent grasping strategies with rapid slip feedback control and a tactile-visual fusion recognition strategy ensure dexterous robotic grasping and accurate recognition of daily objects, handling various challenging tasks, for instance grabbing a paper cup containing liquid. Furthermore, we showcase a robotic desktop-cleaning task, the robot autonomously accomplishes multi-item sorting and cleaning desktop, demonstrating its promising potential for smart housekeeping.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2020
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IF 4.872
Bowen Xiao,Xiaolei Wang,Jing Yang,Kunkun Wang,Yinqing Zhang,Binbin Sun,Tong Zhang,Lingyan Zhu
The wide application of silver nanoparticles (AgNPs) has inevitably led to their release into the natural aquatic environment. Natural organic matter (NOM) is ubiquitous and would influence the fate and effects of these nanoparticles in such aquatic environments. Here we demonstrate that NOM plays an important role in the bioaccumulation kinetics and tissue distribution of AgNPs in zebrafish. In the presence of humic acid and fulvic acid , the uptake rates of AgNPs decreased while the depuration rates of AgNPs increased. As a result, the bioconcentration factor (BCF) of AgNPs in the entire body of the zebrafish was reduced. AgNPs were mainly taken up by the zebrafish via oral ingestion and were greatly accumulated in the liver, intestine and gill. In the intestine, NOM effectively inhibited the AgNPs from penetrating the cell membranes into internal tissues and also suppressed the disintegration and dissolution of AgNPs in gastrointestinal fluid, thereby decreasing the absorption of Ag by zebrafish. This research underlines the significance of incorporating the effects of NOM into predictive models for accurately assessing the toxicity and ecological risks of nanoparticles in natural aquatic environments.
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ACS Applied Polymer Materials
·
2025
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IF 4.7
Jiahui Li,Zhongmei Xia,Bin Tian,Longlong Tian,Tianyi Zhang,Chengxu Wang,Hao Wu,Jian Ni,Fuhua Hou,Yanlai Wang,Tiantian Li
Conductive hydrogels, widely recognized as flexible sensor materials for health monitoring, pose a research challenge in selecting suitable frameworks and designing multifunctional composites that balance conductivity, transparency, self-healing, and mechanical properties. In this work, a simple and efficient plant-template method (corn husk) is used to generate a multifunctional textured hydrogel (PPA) with PEI and PVA as the transparent framework, without additional cross-linking agents. The resulting hydrogel exhibits high conductivity (8.56 S/m), excellent transparency (94% @ 550 nm for the nontextured variant), and remarkable stretchability (627.1%). Additionally, the PPA hydrogel exhibits remarkable self-healing capabilities, achieving a maximum self-healing efficiency of 94.68%. To enhance conductivity, AgNWs are applied to the PPA surface using a rod coating method, forming PPA@RCA with a conductivity of 12.39 S/m. This improvement is attributed to the interactions between the silver-based nanomaterials (AgNWs, AgNPs), Li+, and the PEI/PVA framework in PPA@RCA. The flexible wearable strain sensor based on PPA@RCA features a high gauge factor of 3.35 and instantaneous response characteristics (response time of 195 ms), exhibiting exceptional sensitivity and repeatability across diverse strain ranges and external stimuli. Therefore, the ultrahigh-conductive textured hydrogel, produced through a plant-template strategy, demonstrates significant potential for applications in tablet capacitive pens, writing devices, smart wearables, and health monitoring.
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MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Linghui Tang,Yue Wang,Wenwen Yu,Yan Dong,Yasushi Hasebe
Heavy metal ions have significant risks to both environment and human health, and their detrimental effects are irreversible. Therefore, a sensor capable of simultaneous detecting heavy metal ions with high accuracy presents a significant challenge. In this work, a conductive hydrogel was synthesized using 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS), methacrylamide (MAM), and hydroxyethyl methacrylate (HEMA) as monomers, N, N’-methylenebis(acrylamide) as the crosslinker, through physically doping with silver nanoparticles. The prepared hydrogel has the characteristics of good conductivity, excellent swelling ability and high adsorption capacity for enrichment of heavy metal ions (HIMs). The three-dimensional network hydrogel was directly used for simultaneous detection of HIMs in multiplex system, with superior separation ability, good linear ranges, excellent reproducibility and good long-time stability. Additionally, this sensor can accurately detect Cu 2+ in river sample, demonstrating high precision and applicability. The fabrication of the hydrogel electrochemical sensor is simple and mild, allowing for the electrochemical capture of various HIMs and holds practical application prospect.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Qiurong Zhang,Huixian Zhou,Ping Jiang,Lijun Wu,Xiang Xiao
The spread of bacteriophage-borne antibiotic resistance genes (ARGs) poses a realistic threat to human health. Nanomaterials, as important emerging pollutants, have potential impacts on ARGs dissemination in aquatic environments. However, little is known about its role in transductive transfer of ARGs mediated by bacteriophage in the presence of microplastics. Therefore, this study comprehensively investigated the influence of silver nanoparticles (AgNPs) on the transfer of bacteriophage-encoded ARGs in planktonic Escherichia coli and microplastic-attached biofilm. AgNPs exposure facilitated the phage transduction in planktonic and microplastic-attached bacteria at ambient concentration of 0.1 mg/L. Biological binding mediated by phage-specific recognition, rather than physical aggregation conducted by hydrophilicity and ζ-potential, dominated the bacterial adhesion of AgNPs. The aggregated AgNPs in turn resulted in elevated oxidative stress and membrane destabilization, which promoted the bacteriophage infection to planktonic bacteria. AgNPs exposure could disrupt colanic acid biosynthesis and then reduce the thickness of biofilm on microplastics, contributing to the transfer of phage-encoded ARGs. Moreover, the roughness of microplastics also affected the performance of AgNPs on the transductive transfer of ARGs in biofilms. This study reveals the compound risks of nanomaterials and microplastics in phage-borne ARGs dissemination and highlights the complexity in various environmental scenarios.
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CRYSTENGCOMM
·
2024
·Vol. 26
·期 10
·1418-1429
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IF 2.6
Jun Liao,Sihao Ye,Xupeng Zhu,Wenfeng Fu,Shuwen Xue,Jing Qi,Jun Zhang
Kesterite Cu2ZnSnS4 (CZTS) is considered as one of the most promising thin-film solar cell and photocatalytic materials; however, its efficiency in practical photoelectric applications is often seriously limited by the presence of large numbers of Cu–Zn antisite defects. Alloying with Ag to fabricate Ag-alloyed CZTS ((AgxCu1−x)2ZnSnS4, ACZTS) can reduce the Cu–Zn antisite defects in CZTS, but few research studies have been able to separately clarify the effect of Ag content and growth temperature on large-sized (AgxCu1−x)2ZnSnS4 single crystals. In this study, centimeter-scale high-quality ACZTS single crystals were synthesized via an Ag-alloying strategy by a molten salt method for the first time. The results showed that the synthesized ACZTS have a high-quality single-crystal structure. A series of experiments was performed using various characterization techniques and it was found that Ag content and growth temperature were crucial in determining the size of ACZTS single crystals obtained through a molten salt method and that the associated CZTS base generated at high temperature was beneficial for further ACZTS single-crystal growth in this high-temperature environment. The experimental results showed that the growth mechanism of ACZTS crystals prepared using a molten salt method could be attributed to a type of epitaxial growth process. Our study provides a promising approach for growing large-sized ACZTS single crystals with high quality that can provide a potential single-crystal platform for the study of light-emitting diodes, photocatalytic hydrogen production, etc.
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ACS Applied Electronic Materials
·
2025
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IF 4.7
Zhixian Wu,Xueyong Zheng,Chunli Jiang,Junhan Xie,Weimin Liu,Bo Li,Hechun Lin,Hui Peng,Chunhua Luo
Tin (Sn)-based perovskite light-emitting diodes (PeLEDs) have garnered significant attention owing to their superior optoelectronic properties, affordable solution processing, and environmental friendliness. However, the properties of Sn-PeLEDs trail those of their lead (Pb) counterparts. The main obstacle is the easy oxidation of Sn2+ to Sn4+ as well as fast crystallization, leading to poor film quality with many defects. Herein, a convenient and effective interface engineering strategy is reported to fabricate (2-thiopheneethylamine)2SnI4 (TEA2SnI4) PeLEDs by introducing different peptides into the PEDOT:PSS hole-transport layer (HTL). Benefiting from the interaction between the peptide molecules and the Sn-perovskite nuclei, the crystallization dynamics are effectively adjusted, leading to an improved film morphology. At the same time, the multiple functional groups of peptides can suppress Sn2+ oxidation and passivate interface defects. Therefore, perovskite films with improved luminescence efficiency are obtained. The perovskite films are further used for the fabrication of pure red PeLEDs with enhanced performance. In particular, the optimized devices based on Leu-Gly-Gly (LGG) achieve a peak external quantum efficiency of 0.5% and a brightness of 136 cd m–2, which are about 2 and 3 times larger, respectively, than those of the reference device. This research offers a general strategy to improve the performance of Sn-PeLEDs via peptide interface engineering.
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CHEMOSPHERE
·
2024
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IF 8.1
Ying Ding,Jin-Ting Zheng,Ya-Ning Wang,Di Wu,Dong Zhu
There is growing interest in interactions of microplastics (MPs) with other pollutants. However, there is limited understanding of the combined effects of MPs and silver nanoparticles (AgNPs) on nontarget soil organisms. This work aimed to examine the effects of exposure to various AgNPs' concentrations alone (0, 0.1, 1, 10, 100, 1000 mg kg −1 , 50 nm) and in combination with polyvinyl chloride microplastics (PVC MPs, 80−250 μm) at 0.1% concentration for 28 days on reproduction, Ag accumulation, C/N ratio, and isotopic fractionation of the standard soil fauna collembolan Folsomia candida . Results showed that compared to the AgNPs exposure alone, the presence of MPs significantly reduced reproduction by 51.4% and markedly increased Ag content in collembolans by 87.7% at 1000 mg kg −1 AgNPs, which evidenced a synergistic effect. Co-exposure to MPs and AgNPs resulted in a noticeable reduction in the C/N ratio in F. candida body tissues by 9.90% and 5.27% at 1 and 10 mg kg −1 AgNPs, respectively, showing additive and synergistic effects. Additionally, this co-exposure altered stable isotope fractionation, with the highest increments of δ 15 N by 32.3% and inhibition of δ 13 C by 2.62%, demonstrating the turnover of nutrients shift in the collembolan tissues. Collectively, this study demonstrates that con-current exposure to environmentally relevant concentration of MPs and relatively high doses of AgNPs synergistically induces toxic effects on F. candida , leading to Ag accumulation and reproduction decline. These findings imply that MPs could alter collembolans' responses to AgNPs exposure, potentially enhancing the metal ions’ bioavailability in soil environments and posing ecotoxicological threats to soil-dwelling organisms.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Zhaohui Fei,Chi Jiang,Qunwei Tang,Yingfei Hou
To solve the scarcity of fresh water, reverse osmosis (RO) technology for seawater desalination and wastewater reuse has been developed rapidly. However, the performance of RO is limited by poor selectivity towards certain harmful small molecule constituents (e.g., boron in seawater and N-nitrosodimethylamine in wastewater) and the permeability-selectivity trade-off. Herein, a metal polyphenol network interlayer including both hydrophobic zone and monomer adsorption zone is proposed to optimize interfacial polymerization (IP) process for fabrication of RO membrane . This heterogeneous characteristic is endowed by well-chosen phenol (i.e. TTSBI) and metal (Ni). The physicochemical properties of the substrate are also optimized. An ultra-selective RO membrane with thinner separation layer, higher crosslinking degree and larger surface area is obtained. The RO membranes exhibit separation performance beyond the upper selectivity limit for NaCl and hazardous small molecules. The membrane water permeance is 3.50 L m −2 h −1 bar −1 while the NaCl rejection is 99.5 %. Meanwhile, the mechanism of the interlayer influencing IP process is investigated by combining molecular simulation and experimental methods. Our work provides a novel design direction of substrate used for fabricating RO membrane with outstanding performance.
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INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Yuhe Wei,Xiaoping Sun,Yanfen Sun,Juan Yuan,Haoqiu Chen,Lianxin Luo
Self-powered flexible electronic devices are being rapidly developed rapidly for the field of sensing and motion monitoring, posing greater challenges to friction electrical materials. Triboelectric hydrogels must be enhanced in terms of their electrical conductivity and mechanical strength to address the poor stability, low sensitivity, and susceptibility to unpredictable physical damage of conventional hydrogels. In this study, multinetwork polyacrylamide (PAM)-agar (AG)/nanofibrillar cellulose (CNF)-MXene triboelectric hydrogels with homogeneous structures were prepared. By adopting AG and CNF as "sacrificial bonding" modes and utilizing the high conductivity of MXene , triboelectric hydrogels were found to have good electrical conductivity, high tensile properties , high tensile strength , and high sensitivity. Single-electrode triboelectric nanogenerators made of triboelectric hydrogels were used as self-powered wearable sensors for accurately detecting the amplitude of movement in different parts of the human body during exercise. The results obtained in this study have positive implications for promoting the design of high-performance hydrogel materials and their application in flexible wearable sensors.
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