Nanomaterials
·
2024
·Vol. 14
·期 12
·1028
·
IF 4.4
Haowei Lin,Shibo Xing,Ao Jiang,Mingxuan Li,Qing Chen,Zhenling Wang,Lei Jiang,Huiying Li,Jie Wang,Chenchen Zhou
Large-area oriented ZnO nanoarrays (including nanowire, nanorod, and nanotube) on ITO glass substrates are synthesized via the simple hydrothermal, electrodeposition, and electrochemical etching approach. The morphology of ZnO nanoarrays is controlled by adjusting the reaction temperature, reaction time, and current density. The scanning and transmission electron microscopy (SEM and TEM) results indicate the successful preparation of large-area oriented ZnO nanoarrays with different types, and the energy-dispersive X-microanalysis spectrum (EDS) and X-ray diffraction (XRD) results confirm that the composition of the obtained nanoarrays is ZnO. More importantly, the as-prepared ZnO nanotube arrays are observed with about a 40% increase in ultraviolet absorption intensity compared to the ZnO nanowire/nanorod arrays, due to having larger specific surface areas. The as-prepared different types of ZnO nanoarrays have great potential for applications in low-cost and high-performance optoelectronic devices.
研究领域:
材料科学
·
纳米技术
·
光电材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2016
·Vol. 141
·期 7
·2303-2307
·
IF 4.033
Lina Yao,Fei Yan,Bin Su
Halonitrobenzenes (HNBs) are a class of molecules that are highly toxic to human health and the ecological environment. Thus, effective and efficient approaches capable of monitoring and detecting HNBs are greatly desired. We report herein a simple and sensitive method for the detection of HNBs. The detection was based on the indium tin oxide (ITO) electrodes modified with a binary assembly of highly ordered surfactant micelles (OSMs) and silica mesochannels (SMs). The SMs have a diameter of 2–3 nm and a vertical orientation, which provide a hard support to stabilize soft OSMs. Moreover, each OSM consists of a hydrophobic core due to the organized assembly of surfactant hydrocarbon chains, which can selectively extract and concentrate lipophilic HNBs from aqueous media, allow their transport to the underlying ITO electrode surface and therein their detection by voltammetry. As a proof-of-concept experiment, 1-chloro-3-nitrobenzene, 1-chloro-4-nitrobenzene, 1-bromo-4-nitrobenzene and 2,4-dinitrobromobenzene were analyzed in aqueous solutions. A simple and fast detection was achieved in all cases, with a wide linear dynamic range, a high sensitivity and a low limit of detection at the ppb level. Apart from the extraction ability, the OSMs also prohibited the access of and surface contamination by unwanted substances, showing excellent anti-fouling and anti-interference power. Indeed, as we demonstrated, the sensor could be employed for direct electrochemical detection of HNBs in complex samples, such as lake water and soil dispersion, without any pre-treatment, indicating its potential usefulness in practical analysis.
研究领域:
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
Nanomaterials
·
2019
·Vol. 9
·期 7
·932
·
IF 4.034
Dazheng Chen,Gang Fan,Hongxiao Zhang,Long Zhou,Weidong Zhu,He Xi,Hang Dong,Shangzheng Pang,Xiaoning He,Zhenhua Lin,Jincheng Zhang,Chunfu Zhang,Yue Hao
Indium thin oxide (ITO)-free planar perovskite solar cells (PSCs) were fabricated at a low temperature (150 °C) in this work based on the transparent electrode of photolithography processed nickel/gold (Ni/Au) mesh and the high conductivity polymer, PH1000. Ultrathin Au was introduced to increase the conductivity of metal mesh, and the optimal hexagonal Ni (30 nm)/Au (10 nm) mesh (line width of 5 μm) shows a transmittance close to 80% in the visible light region and a sheet resistance lower than 16.9 Ω/sq. The conductive polymer PH1000 not only smooths the raised surface of the metal mesh but also enhances the charge collection ability of metal mesh. The fabricated PSCs have the typical planar structure (glass/Ni-Au mesh/PH1000/PEDOT:PSS/MAyFA1−yPbIxCl3−x/PCBM/BCP/Ag) and the champion PSC (0.09 cm2) obtains a power conversion efficiency (PCE) of 13.88%, negligible current hysteresis, steady current density and PCE outputs, and good process repeatability. Its photovoltaic performance and stability are comparable to the reference PSC based on the ITO electrodes (PCE = 15.70%), which demonstrates that the Ni/Au mesh transparent electrodes are a promising ITO alternative to fabricate efficient PSCs. The relatively lower performance of Ni/Au based PSC results from the relatively slower charge extraction and stronger charge recombination than the ITO based PSC. Further, we tried to fabricate the large area (1 cm2) device and achieve a PCE over 6% with negligible hysteresis and steady current density and PCE outputs. The improvements of perovskite film quality and interface modification should be an effective approach to further enhance the device performance of Ni/Au based PSCs, and the Ni/Au mesh electrode may find wider applications in PSCs and flexible devices.Keywords:metal mesh;transparent electrode;photolithography;perovskite solar cell;large-area solar cell
研究领域:
材料科学
·
能源技术
·
光电技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Zicheng Li,Yingkui Guo,Hongyan Yue,Xin Gao,Shuo Huang,Xiaohua Zhang,Yanfei Yu,Haopeng Zhang,Hengwei Zhang
EP is an important natural catecholamine neurotransmitter in the central nervous system, and the change of EP concentration will lead to many diseases. Therefore, rapid and sensitive detection of EP is of great significance for clinical research. The Ti 3 C 2 T x MXene dispersion obtained by in-situ HF etching Ti 3 AlC 2 was mixed with graphene oxide (GO) dispersion synthesized by the modified Hummers method. After freeze drying and heat-treatment, the reduced graphene oxide/Ti 3 C 2 T x MXene (GMA) was obtained and then the GMA was moved onto indium tin oxide (ITO) as the GMA/ITO working electrode for electrochemical detection of epinephrine (EP). The results are as follows: Ti 3 C 2 T x MXene with a diameter of approximately 150 nm is uniformly distributed on the surface of the 3D graphene. The three-dimensional structure of GMA facilitates the entry of bioactive molecules and increases the contact area. GMA/ITO has a high sensitivity for the determination of EP 3.74 μA·μM −1 ·cm −2 . Moreover, the electrode shows a very low detection limit, well repeatability and stability, and it can detect the EP content in real urine samples.
研究领域:
生物医学工程
·
神经科学
·
材料科学
✓ 已验证
DOI
高影响因子
MATERIALS & DESIGN
·
2018
·
IF 4.525
Ping Chen,Zhangru Chen,Shaodong Hou,Xiang Shen,Yingbo Chu,Yu Yang,Luyun Yang,Jinyan Li,Nengli Dai
In this work, we firstly introduce a facile method to synthesize bulk silica glass contained indium tin oxide nanoparticles (ITO NPs). Water solution with InCl 3 and SnCl 4 was mixed and dipped into the mesoporous silica glass (MSG) followed by an in-situ growth of ITO NPs under 1000 °C heat treatment. X-ray diffraction (XRD) and transmission electron microscopy (TEM) show that the ITO NPs are highly monodisperse and crystalline in the silica glass with size around 20–30 nm. The size and distribution of ITO NPs can be regulated by the mesopores of mesoporous silica glass (MSG) effectively. The absorption and photoluminescence (PL) spectra exhibit an optical band gap and a PL emission of the ITO NPs doped silica glass at 3.12 eV and 560 nm, respectively. Results indicate that this kind of composite material has potential applications for optical nonlinearity, plasmonic formation, and sensing in the future.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.7
Yufei Deng,Xiaofan He,Rong Jin,Dechen Jiang,Danjun Fang
In this communication, local electrochemiluminescence (ECL) imaging is achieved using scanning electrochemical cell microscopy (SECCM) to create a localized region for the occurrence of ECL reaction. The system is demonstrated using a droplet at the micropipette that is contact with the prepared Ru-Silica@Au particles at indium tin oxide (ITO) slide. Tri- n -propylamine (TPrA) in the droplet reacts with ruthenium complex in a 10 μm-diameter-region to produce ECL emission, which is recorded by photo multiplier tube (PMT) underneath the ITO slide. By contacting each local region consecutively, the distribution of steady-state current and the related ECL emission at the ITO surface is imaged. The local ECL intensity show an approximately linear dependence with the current, but obvious deviation from the linear curve is observed at some regions. This result suggests that the ECL emission is not only determined by the transferred electron number in the electrochemical reaction, and also affected by local environments at ITO surface. As compared with the traditionally used ECL imaging in the bulk solution, this strategy avoids the cross-talking of ECL emission from nearby regions, and could offer a new way to unveil more molecular mechanism in the ECL reaction.
研究领域:
分析化学
·
电化学
·
成像技术
✓ 已验证
DOI
高影响因子
JCI Insight
·
2022
·
IF 9.484
Jing Yang,Hongxia Li,Chi Zhang,Yafeng Zhou
There is a high prevalence of ventricular arrhythmias related to sudden cardiac death in patients with chronic kidney disease (CKD). To explored the possible mechanism of CKD-related ventricular arrhythmias, a CKD rat model was created, and indoxyl sulfate (IS) was further used in vivo and in vitro. This project used the following methods: patch clamp, electrocardiogram, and some molecular biology experimental techniques. IS was found to be significantly elevated in the serum of CKD rats. Interestingly, the expression levels of the fast transient outward potassium current–related (I to,f -related) proteins (Kv4.2, Kv4.3, and KChIP2) in the heart of CKD rats and rats treated with IS decreased. IS dose-dependently reduced I to,f density, accompanied by the decreases in Kv4.2, Kv4.3, and KChIP2 proteins in vitro. IS also prolonged the action potential duration and QT interval, and paroxysmal ventricular tachycardia could be induced by IS. In-depth studies have shown that ROS/p38MAPK, ROS–p44/42 MAPK, and NF-κB signaling pathways play key roles in the reduction of I to,f density and I to,f -related proteins caused by IS. These data suggest that IS reduces I to,f -related proteins and I to,f density by activating ROS/MAPK and NF-κB signaling pathways, and the action potential duration and QT interval are subsequently prolonged, which contributes to increasing the susceptibility to arrhythmia in CKD.
研究领域:
心脏病学
·
肾病学
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分子生物学
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电生理学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Central South University
·
2024
·Vol. 31
·期 3
·747-761
·
IF 3.7
Suo Jun,Jiao Ke-xin,Yi Jian-hong,Fang Dong,Ruzimuradov Olim
L -ascorbic acid (AA, also known as vitamin C) and dopamine (DA) play important roles in human life activities. When their concentrations are abnormal, they will cause diseases. Therefore, it is of great interest to develop an effective strategy to detect AA and DA levels. Here, anodic aluminum oxide (AAO) films were used as templates to fabricate indium-tin (InSn) alloy nanowires (NWs) by vacuum mechanical injection method, and then Pt nanoparticles were coated on the surface of the InSn NWs by means of the “in-situ discharge reduction” method. Subsequently, the composites were exposed in air for heat treatment to synthesize PtO 2 /indium-tin oxide (ITO) NWs. Finally, PtO 2 /ITO NWs were reduced under H 2 atmosphere to obtain Pt/ITO NWs. The results show that the diameter of the InSn NWs is ∼40 nm and Pt nanoparticles with 2–5 nm are uniformly coated on the surface of the ITO NWs. Additionally, the performance of electrochemical detection of AA and DA on the Pt/ITO NWs electrode is tested by the cyclic voltammetry and differential pulse stripping voltammetry. The Pt/ITO NWs electrode has low detection limits in the detection of AA (66.7 µM) and DA (1 µM), which reveals the good electrochemical detection of AA and DA.
研究领域:
材料科学
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电化学
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纳米技术
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
IEEE TRANSACTIONS ON ELECTRON DEVICES
·
2026
·
IF 3.6
Gaoliang Zhou,Peng Chen,Jiawei Yang,Bo He,Huanhuan Wei,Shanshan Jiang,Qingxuan Li,Gang He
The advancement of brain-inspired computing hinges on the development of efficient neuromorphic synaptic devices. One-dimensional metal-oxide nanofiber transistors have garnered significant attention in artificial synaptic devices due to their unique structural and optoelectronic properties. This work presents synaptic transistors based on arrayed coaxial heterojunction nanofibers (ITO/ZnO) fabricated via electrospinning. The unique radial core-shell structure facilitates superior synaptic performances, including ultraviolet (UV)-light-modulated synaptic plasticity with a high paired-pulse facilitation (PPF) index up to 286%. A constructed neural network for handwritten digit recognition achieves an accuracy of 97.6%, demonstrating its potential for neuromorphic computing. Furthermore, we explore multimodal sensory integration by developing a device that responds to both optical and acoustic stimuli, enabling dynamic logic operations. This work highlights the significant potential of nanostructure-engineered synaptic devices for next-generation artificial intelligence and interactive systems.
✓ 已验证
DOI
高影响因子
Small
·
2026
·
IF 11.8
Hui Deng,Jinwei Hong,Ruijin Zheng,Yu Zhou,Weihuang Wang,Haifang Zhou,Peijie Lin,Jinling Yu,Yunfeng Lai,Shuying Cheng
Antimony sulfide (Sb 2 S 3 ) photodetectors (PDs) show great prospects in applications of optical communication and imaging. The detector performance is significantly influenced by reflection losses at the incident surface, particularly under weak-light conditions. Herein, we propose self-powered Sb 2 S 3 thin film PDs (glass/ITO/patterned ITO/TiO 2 /Sb 2 S 3 /Au) with light-trapped ITO patterns to enhance absorbance and performance. Periodic cuboid-patterned ITO patterns with the sizes of 50 × 50 µm 2 and depth of 250 nm are fabricated using photolithography and magnetron sputtering, which achieves about a 21% absorbance enhancement of visible light and 16% photocurrent increase of Sb 2 S 3 PDs. Meanwhile, the patterned ITO slightly expands the heterojunction contact area, which enhances the built-in electric field and the carrier extraction efficiency. Under the 530-nm light illumination of 5 µW/cm 2 , the device achieves a responsivity of 4.5 A/W and a specific detectivity of 1.4 × 10 13 Jones, demonstrating its weak-light detection ability. The Sb 2 S 3 PDs array, featuring fast response and a wide 3 dB bandwidth, has demonstrated image sensing capabilities by clearly resolving variations in bright and dark fields, showcasing application potentials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Results in Surfaces and Interfaces
·
2021
·
IF 0
Wenli Li,Jiangbo Sun,Jie Zhang,Olatoye Abiola Ganiyat,Yanbin Cui
Electrochromic smart devices with tunable optical properties are on the verge of replacing the conventional windows and curtains. The preparation and commercialization of electrochromic materials are majorly based on vapor phase deposition which is limited by high price and difficult production processes. Here, atomizing spray deposition process is developed for the production of large area, low-cost electrochromic film. W 18 O 49 , a promising inorganic EC material, was used to prepare EC film on indium tin oxide-polyethylene terephthalate (ITO-PET) flexible substrate. Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) was also printed on ITO-PET substrate to improve the conductivity of substrate and the adhesion between W 18 O 49 and substrate. The experimental results showed that the transmittance modulation ( Δ T) of W 18 O 49 /PEDOT:PSS/ITO-PET flexible EC film was 63.34% corresponding to a wavelength of 633 nm. The coloring and bleaching response times of W 18 O 49 /PEDOT:PSS/ITO-PET EC film were 18.7 s and 23.2 s, respectively. Furthermore, the as-prepared flexible EC film by atomizing spray deposition method had excellent cyclic stability, and the optical transmittance of the film still retains a high value (70%) after continuous coloring and bleaching for 6000 s.
研究领域:
材料科学
·
纳米技术
·
光电功能材料
✓ 已验证
DOI
Science China-Materials
·
2023
·Vol. 66
·期 11
·4445-4452
·
IF 8.1
Chen Guangshou,Cong Haofei,Chang Yu,Zhang Yu,Zhou Ruifu,Wang Yuxiao,Qin Yuanbin,Liu Xuhai,Wang Fengyun
Constructing a semiconducting channel and electrodes using an identical material is a reliable method to fabricate low-cost, high-performance transistors. Wide-bandgap metal oxide semiconductors (MOSs) have been widely applied in various circuits. However, it is still a challenge to make low-cost transistors with a channel and electrodes based on identical MOSs. Here, we applied an electrospinning technique coupled with a nanowire transfer technique to fabricate high-performance, electrical-biased transistors with a one-dimensional indium tin oxide (ITO) nanowire, used as the semiconducting channel and the conducting source/drain (S/D) electrodes. The transition from a regular-conducting ITO to the newly-designed semiconducting ITO was achieved by tuning the needle diameter of the electrospinning nozzle. This method can be extended to the construction of future flexible and transparent transistors with both a channel and S/D electrodes.
研究领域:
材料科学
·
纳米技术
·
电子工程
·
半导体器件
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）