Article
Materials Science, Multidisciplinary
Ximeng Qi, Junyi Zhou, Xiaoyang Zhu, Hongke Li, Guangming Zhang, Luanfa Sun, Rui Wang, Youqi Huang, Wenchao Yang, Yuan-Fang Zhang, Zhenghao Li, Houchao Zhang, Jiawei Zhao, Quan Xu, Hongbo Lan
Summary: We developed a novel solution for fabricating ultrahigh aspect ratio embedded metal meshes (EMMs) by microscale hybrid printing nano silver paste. With an improved printing nozzle and imprinting process, we achieved an EMM with the highest AR ever reported (20.1). The resulting flexible transparent electrode displayed remarkable photoelectric performance and excellent optoelectronic properties after rigorous mechanical and environmental stability tests.
MATERIALS TODAY PHYSICS
(2023)
Article
Thermodynamics
Peilin Cui, Zhenyu Liu
Summary: In this study, an ultrahigh-aspect-ratio copper microchannel heat sink was fabricated using wire electrical discharge machining technique, and the flow boiling heat transfer of deionized water was experimentally investigated. The results showed that compared to heat sinks with aspect ratios of 1, 5, and 15, the present heat sink exhibited superior performance in critical heat flux and thermal resistance, despite having a much lower mass flux. The ultrahigh-aspect-ratio channel demonstrated a significant improvement in critical heat flux and thermal resistance, attributed to the utilization of nucleate bubbles and coexisting heat transfer modes.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Qingwei Yan, Wen Dai, Jingyao Gao, Xue Tan, Le Lv, Junfeng Ying, Xiaoxin Lu, Jibao Lu, Yagang Yao, Qiuping Wei, Rong Sun, Jinhong Yu, Nan Jiang, Ding Chen, Ching-Ping Wong, Rong Xiang, Shigeo Maruyama, Cheng-Te Lin
Summary: A rapid and high-yield method based on a microfluidization technique is developed to obtain exfoliated BNNS with a record high aspect ratio of approximate to 1500 and low degree of defects. The composite film made of BNNS and poly(vinyl alcohol) (PVA) matrix exhibits an in-plane thermal conductivity of 67.6 W m(-1) K-1 at a BNNS loading of 83 wt %, leading to a record high value of thermal conductivity enhancement (approximate to 35,500). This provides a practical route to produce electrically insulating polymer composites with high thermal conductivity for thermal management applications in modern electronic devices.
Article
Chemistry, Multidisciplinary
Hongran Zhao, Jiheng Ding, Changchun Zhao, Jinggang Wang, Yajin Fang, Jin Zhu
Summary: This study presents a sustainable mechanochemical exfoliation approach for the synthesis of large-size ultrathin hexagonal boron nitride nanosheets (BNNSs) with an ultrahigh aspect ratio and low defect degree. The obtained BNNSs show excellent disperse ability in liquids and the mechanism of edge-selective grafting is proposed. Furthermore, high-performance and transparent BNNSs/epoxy composites are successfully fabricated, exhibiting greatly improved anticorrosion and mechanical properties.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Agricultural Engineering
Lindong Li, Mingbang Wu, Chuhan Song, Lin Liu, Wenli Gong, Yanhong Ding, Juming Yao
Summary: This study proposed a simple and feasible approach for converting waste vinasse into high value-added activated carbon, which showed excellent adsorption ability to cationic methylene blue and high removal efficiency for industrial wastewater treatment. The results provide insights into solid waste treatment and high value-added transformation, as well as a promising application of AC for practical wastewater purification.
BIORESOURCE TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Somayeh Sohrabi, Mostafa Keshavarz Moraveji, Davood Iranshahi
Summary: The research aims to investigate the impact of Titanium foil pretreatment on the structure and surface of TiO2 nano wires, as well as the crucial parameters of synthesis temperature and time in low-temperature synthesis. The experiment results demonstrate that high aspect ratios can be achieved for lauric acid-coated TiO2 nano wires under specific conditions.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Aerospace
Zhao Yang, Jie Li
Summary: This study investigates the impact of aeroelastic deformation on the performance of a high-aspect-ratio wing from a solar-powered UAV. A numerical fluid-structural coupling analysis is conducted using a loosely coupled partitioned approach. The results show that the deformed wing exhibits earlier laminar transition and worsened stall characteristics at small angles of attack compared to the rigid wing.
Article
Thermodynamics
Zirui Li, Zhenyu Wang, Wei Shao, Qun Cao, Zheng Cui
Summary: The nucleate boiling process on rectangular grooved surfaces with varying aspect ratio is studied through molecular dynamics simulation. The rectangular grooves can significantly accelerate the initial bubble nucleation time and delay the transition from bubble nucleation to film boiling. However, when the groove width is extremely narrow, bubbles cannot be generated first due to the limitation of geometric structure and low potential energy region inside the groove.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Jian Yu, Yaning Zhao, Ya Shen, Chenmin Yao, Jingmei Guo, Hongye Yang, Cui Huang
Summary: This study investigated the effects of EGCG and ethanol wet-bonding on the adhesive-dentin interface stability of primary teeth. The results showed that the dentin bond strength was preserved and nanoleakage reduced in the 0.5% and 1% EGCG groups. Furthermore, the activity of endogenous proteases and the growth of Streptococcus mutans biofilm were inhibited after treatment with 0.5% and 1% EGCG/ethanol solutions.
JOURNAL OF DENTISTRY
(2022)
Article
Chemistry, Physical
Hai Deng, Ziquan Wang, Minjun Kim, Yusuke Yamauchi, Stephen J. Eichhorn, Maria-Magdalena Titirici, Libo Deng
Summary: Capacitive deionization (CDI) is a promising technique for removing and recycling ions from wastewater. In this study, the co-ion expulsion effect and anode oxidation issues are addressed through material and system optimization. Porous carbons are prepared using biomass and KOH, and nitrogen-doping is found to influence the surface charge. An asymmetric CDI system with E-pzc matching is constructed, achieving high adsorption capacity and ion removal.
Article
Chemistry, Physical
Zhi Zhou, Jing-Pei Cao, Yan Wu, Qi-Qi Zhuang, Xiao-Yan Zhao, Yu-Lei Wei, Hong-Cun Bai
Summary: This study successfully synthesized N/O-doped carbon spheres from waste sugar solution, demonstrating excellent electrochemical performance with high specific capacitance and energy density, providing a new method for energy storage applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Polymer Science
Xiulan Yang, Minzhao Gu, Qunmei Wei, Yang Zhang, Sihan Wu, Qin Wu, Xiaowen Hu, Wei Zhao, Guofu Zhou
Summary: In this study, a simple strategy of adding a solvent developing step into the photo-embossing process was demonstrated to improve the aspect ratios of the structures. The method was shown to be effective even in thin films, and compatible with other methods used for enhancing the aspect ratios. The surface relief structures fabricated were also utilized in liquid crystal devices, and their performance in visible light regulation was investigated.
Article
Chemistry, Physical
Zhentao Bian, Hongyan Wang, Xuanxuan Zhao, Zhonghai Ni, Guangzhen Zhao, Chong Chen, Guangzhou Hu, Sridhar Komarneni
Summary: Porous carbons with high specific surface area are crucial for electrochemical capacitors. In this study, porous carbon was synthesized using abandoned feathers and potassium hydroxide. The optimal sample exhibited ultra-high specific surface area and large pore volume. The resulting electrochemical capacitors showed excellent capacitance and energy density, highlighting the potential of small mesopores in enhancing electrode material performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Manufacturing
Jinjin Han, Rui Ma, Linglei Kong, Xiuqing Hao, Ni Chen, Liang Li, Ning He
Summary: In this study, the chip formation mechanism of micro-structures with High-Aspect Ratio was thoroughly investigated, considering the minimum cutting thickness, tool types, and milling parameters. The results show that the performance of the tool, milling parameters, and side-wall limitation significantly affect the chip formation and characteristics of High-Aspect Ratio micro-grooves, which in turn impact the quality of machining.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Electrical & Electronic
Tianqi Huang, Liang Lu, Zhanjun Ling, Gurui Fu, Lei Zhang, Hanglin Lu, Benli Yu, Hongtao Li
Summary: This study demonstrates an ultrasensitive optical microfiber sensing probe by immobilizing gold nanorods with different aspect ratios. The nanointerface-sensitized optical microfiber shows significantly higher sensing sensitivity compared to traditional silica optical microfiber and nanointerface-sensitized plastic-clad silica multimode optical fiber.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
