Meiqin Zhang

University of Science and Technology Beijing

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Xueji Zhang

Shenzhen University

Yuanhua Shao

Beijing National Laboratory for Molecular Sciences

Hongyu Chen

Zhejiang University of Technology

Shi Mi

University of Science and Technology Beijing

Qianhui Wei

General Research Institute for Nonferrous Metals (China)

Lu Tian

Chinese Research Academy of Environmental Sciences

Guoqin Huang

Gaozhou People's Hospital

Zhao Gao

Northwestern Polytechnical University

Rongliang Ma

Ministry of Public Security of the People's Republic of China

Yu Zhu

University Town of Shenzhen

Cooperative Institutions

University of Science and Technology Beijing

Chinese Academy of Sciences

Peking University

Zhejiang University

University of Chinese Academy of Sciences

Sichuan University

Huaqiao University

Huazhong University of Science and Technology

Harbin Institute of Technology

Central South University

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SMSファイバ構造に基づく高感度応力試験と解析【JST・京大機械翻訳】

Meiqin Zhang Guanjun Wang An Yongquan Wang Zhibin

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Hierarchically Ordered Grid-Type Silver Nanowire Microelectrodes via Direct Ink Writing

ACS Applied Nano Materials (2024)

Xiangyi Kong Hongyu Chen Hejian Li Liancong Yue Min Gong

Flexible transparent electrodes (FTEs) constructed from silver nanowires (AgNWs) have potential applications in a wide range of flexible optoelectronic devices. However, the uncontrollable alignment of AgNWs makes it challenging to manufacture high-performance and cost-effective AgNW-based FTEs. Herein, we present a direct-ink-writing technique for patterning AgNWs into high-resolution (line width as small as 33 μm), ultrathin (line height as small as 57 nm), and large-area (as large as 220 × 160 mm2) orthogonal grids in a single writing pass. The hierarchically ordered (HO) AgNW grids exhibit superior properties with a sheet resistance of 25.3 Ω/sq, a visible-light transmittance (T) of 98.6%, a high figure of merit of 1053, and a haze factor of 0.46% at an extremely low AgNW dosage of 2.1 μg/cm2. The wearable transparent heaters utilizing the printed HO AgNW grids exhibit excellent Joule heating performance. This work showcases a strategy for fabricating cost-effective AgNW-based FTEs that can be used to replace indium–tin oxide in large-scale applications.

10.1021/acsanm.4c02614

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Citations (2)

One-pot synthesis of redox-triggered biodegradable hybrid nanocapsules with a disulfide-bridged silsesquioxane framework for promising drug delivery

Journal of Materials Chemistry B (2017)

Mengyun Zhou Xin Du Weike Li Xiaoyu Li Hongwei Huang

Redox-triggered biodegradable hybrid nanocapsules with the disulfide-bridged silsesquioxane framework were developed for promising drug delivery.

Silsesquioxane

Nanocapsules

10.1039/c6tb03368g

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Citations (52)

Studies of Electron-Transfer and Charge-Transfer Coupling Processes at a Liquid/Liquid Interface by Double-Barrel Micropipet Technique

Analytical Chemistry (2003)

Yong Chen Zhao Gao Fei Li Liaohai Ge Meiqin Zhang

Investigation of a heterogeneous electron-transfer (ET) reaction at the water/1,2-dichloroethane interface employing a double-barrel micropipet technique is reported. The chosen system was the reaction between Fe(CN)63- in the aqueous phase (W) and ferrocene in 1,2-dichloroethane (DCE). According to the generation and the collection currents as well as collection efficiency, the ET-ion-transfer (IT) coupling process at such an interface and competing reactions with the organic supporting electrolyte in the organic phase can be studied. In addition, this technique has been found to be an efficient method to distinguish and measure the charge-transfer coupling reaction between two ions (IT-IT) processes occurring simultaneously at a liquid/liquid interface. On this basis, the formal Gibbs energies of transfer of some ions across the W/DCE interface, such as NO3-, NO2-, Cl-, COO-, TBA+, TPAs+, Cs+, Rb+, K+, Na+, and Li+, for which their direct transfers are usually difficult to obtain because of the IT-IT coupling processes, were quantitatively evaluated.

Interface (matter)

Liquid liquid

10.1021/ac034674e

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Citations (25)

Grinding characteristics of aluminium alloy 4032 with a brazed diamond wheel

The International Journal of Advanced Manufacturing Technology (2018)

Guoqin Huang Kaifeng Yu Meiqin Zhang Hua Guo Xipeng Xu

Brazing

Diamond tool

Diamond grinding

10.1007/s00170-017-1540-2

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Citations (19)

The influence of the S shaped characteristics of high head pump-turbine on the minimum pressure of draft tube

Journal of Physics Conference Series (2024)

Meiqin Zhang Yanyi Su Jianfu Chen Shubang Zhang Wei Wang

Abstract The S shaped characteristics of pump-turbines have an important impact on the minimum pressure of draft tube. The quality of the S shaped characteristics is one of the key indicators to determine the success of model runner development, and this indicator is particularly important for ultra-high head pump-turbines. In order to delve deeper into the inherent relationship between the S-shaped characteristics of the runner and the optimization design and minimum pressure of draft tube, this article first defines a method for fixed-point quantitative analysis of the S shaped characteristic curve. Then, different experimental characteristic curves obtained from multiple optimized designs of the runner are used to calculate the hydraulic transition process. At the same time, the S shaped curve is quantitatively analyzed, and the relationship between the three is explored through continuous analysis. The results show that the bending degree of the equal opening lines in the middle at the S shape characteristics curves has the greatest influence on the minimum pressure at the draft tube inlet. The greater the ratio of unit flow difference to unit speed difference in the S shape characteristics curves of the equal opening line, the greater the runaway unit flow on the same equal opening line, the more favorable it is to increase the minimum pressure at the inlet of the draft tube. The optimal design of blade type and guide vane airfoil can improve the minimum pressure value of draft tube to a certain extent. The conclusions obtained in this paper can be used for reference in the research and development design of high head pump-turbine runner and the optimization calculation of transition.

Draft tube

Pressure head

10.1088/1742-6596/2752/1/012062

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The effects of temperature curves on the diamond/Ni-Cr interfacial properties in high-frequency induction brazing

International Journal of Abrasive Technology (2017)

Guoqin Huang Meiqin Zhang Hua Guo Xipeng Xu

The present study alters the temperature characteristics during high-frequency induction brazing of diamond grits and investigates their effects on the properties of the diamond/brazing alloy interface. The high-frequency induction brazing was conducted in a vacuum using Ni-Cr as active filler alloy. An active temperature range was identified for the brazing of high-quality diamond tools. This temperature range, coupled with long heating time, favours the wetting of filler alloy to diamonds, and the chemical reactions and element diffusion at the diamond/alloy interface, but reduces the static compressive strength of the diamonds. If the temperature is slowly raised, the protrusion height and location of brazed diamonds can be more precisely controlled. Brazed diamonds with 30%-50% protrusion are optimal for cutting.

Brazing

Atmospheric temperature range

Diamond tool

Induction Heating

10.1504/ijat.2017.089290

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Citations (5)

Fundamental aspects of ultrasonic assisted induction brazing of diamond onto 1045 steel

Journal of Materials Processing Technology (2018)

Guoqin Huang Jierong Huang Meiqin Zhang Dekui Mu Guantao Zhou

Brazing

Diamond tool

Shear Strength

10.1016/j.jmatprotec.2018.05.021

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Citations (40)

Determination of organic and inorganic selenium in aquatic prod-ucts by hydride generation-atomic florescence spectrometry

Journal of Fishery Sciences of China (2013)

Meiqin Zhang Huaman JI Hongsheng Yang Yong Meng Jing Wang

10.3724/sp.j.1118.2012.00900

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Citations (1)

Hierarchical Activities Designed for High-Resolution Visualization and Quantitative Analysis of Fingerprint Sweat Pores

Journal of Chemical Education (2023)

Hongyu Chen Lu Tian Meiqin Zhang

Level 3 characteristics are increasingly important for fingerprint identification, particularly when the fingerprints are problematic and lack level 2 details. In practice, no reliable visualization methods for level 3 features are transferred into a course for the general public, forensic students, or investigators. Our group has reported the membrane/water technique and wet-membrane method as simple, instantaneous, high-resolution, and reproducible methods for visualizing level 3 features of latent fingerprints (LFPs). Herein, we designed a simple-to-operate laboratory course on sweat pore visualization and analysis via the two methods mentioned. Three modules are included, and students participate in different modular combinations according to their interests and specialties. Module 1, consisting of a 15 min lecture on fingerprint theory followed by a brief demonstration of visualization procedures, is designed for broad audiences ranging from primary school to college laboratories. In module 2, students explored the deposition force impact on level 3 features (for students majoring in forensic science). Module 3 customized for forensic upper-division undergraduates and postgraduates invites them to conduct Gaussian fitting of the pore area and adjacent pore distance. After discussion, students form their own opinions on the identifiable strengths of the above parameters in fingerprint matching. In a way, this experiment can be evolved into the elective course and specialized curriculum, where elective course containing module 1 can stimulate public interest in chemistry and specialized curriculum including modules 1–2 (or modules 1–3) may guide students to extract level 3 features and understand the role of level 3 features at a quantitative level.

Identification

10.1021/acs.jchemed.3c00040

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