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A bioinspired magnetic responsive cilia array surface for microspheres underwater directional transport

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Science China Chemistry 2020年第3期63卷 347-353页

作者： shuang ben Jinjia Yao Yuzhen Ning Zhihong Zhao Jinlong Zha Dongliang Tian Kesong Liu Lei Jiang Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry Beihang UniversityBeijing 100191China Beijing Advanced Innovation Center for Biomedical Engineering Beihang UniversityBeijing 100191China

Bio-inspired surfaces are usually designed by imitating the surface properties of a particular biological species,or combing with the surface characteristics of multiple biological species to construct a cross-species ***,inspired by the structure and rhythmic swing of human pulmonary cilia,and the directional migration of pigeons by geomagnetic field,an integrated system of biomimetic hydrophobic magnetic cilia array surface with reversible deformation properties and excellent magnetic response performance for solid microspheres underwater transport is designed and *** by an external magnetic field,the magnetic responsive cilia array surface can directionally and continuously transport microspheres underwater in periodic *** work will shed new light on the designing of micromanipulation systems for micro-objects transport,and promote the practical application of micro-operating systems in underwater transportation and drug delivery.

关键词： cilia-inspired surface underwater microspheres transport magnetic response micro-operating system

Thermal Properties of Mg–Al/AlN Composites Fabricated by Powder Metallurgy

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Acta Metallurgica Sinica(English Letters) 2018年第6期31卷 641-649页

作者： Jie Chen Chong-Gao Bao Zhi-Wei Liu ben-shuang Sun Yong-Chun Shu Qing-Kui Li Henan Province Industrial Technology Research Institute of Resources and Materials Zhengzhou University State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong University

Magnesium matrix composites reinforced with AlN particles were fabricated by the powder metallurgy *** mixing methods were used in this study to control the distribution of Al N *** microstructure,thermal diffusivity and thermal expansion of the Mg–Al/Al N composites using different mixing methods were *** results showed that the intergranular and intragranular distributions of Al N particles were obtained,respectively,by controlling the mixing *** composite with intragranular particles exhibited lower thermal diffusivity because of the existences of more interfaces,defects and grain boundaries,which acted as scattering centers and reduced the mean free path of electrons and *** existence of Al N particles lowered the coefficient of thermal expansion（CTE）and enhanced the dimensional stability of the *** the use of the improved mixing method further reduced the CTE of Mg–Al/Al N composites.

关键词： Magnesium matrix composite Microstructure Thermal diffusivity Thermal expansion Mixing

Unidirectional movement behavior of underwater bubbles on the wettability gradient mesh via asymmetrical bounce

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Science China Chemistry 2024年第8期67卷 2606-2613页

作者： Yuzhen Ning Zhihong Zhao shuang ben Qiang Li Cunming Yu Xudong Zhang Huawei Chen Kesong Liu Lei Jiang School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of ChemistryBeihang UniversityBeijing 100191China Research Institute of Aero-Engine Beihang UniversityBeijing 100191China School of Materials Science and Engineering Shenyang Ligong UniversityShenyang 110159China Tianmushan Laboratory Hangzhou 310023China The Analysis Testing CenterBeihang UniversityBeijing 100191China

The impact of underwater bubbles on solid surfaces with a gradient wettability is important for fundamental science and technological applications. Despite progress in the translational motion of underwater bubbles on asymmetric surface, a fundamental dynamic understanding of asymmetrical bounce behavior of the underwater bubble needs to be further ***, we investigate asymmetrical bounce of underwater bubbles after impacting the wettability gradient copper mesh *** bounce of the underwater bubble on the wettability gradient mesh(WGM) surface is composed by asymmetrical spread in the spread process and asymmetrical recoil in the recoil process, which induce the unidirectional movement ***, effective bubble-size manipulation can be easily implemented due to different volumes of bubbles remaining at different locations of WGM surface. We envision that this work will provide a new understanding of asymmetrical bounce behavior of the underwater bubble on the wettability gradient surface, and propose a novel and feasible strategy for constructing the underwater bubble manipulation system.

关键词： asymmetrical bounce unidirectional movement behavior gradient wettability

Flexible dual-Janus porous membrane for underwater gas bubbles anti-buoyancy unidirectional transportation

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Science China Chemistry 2024年

作者： shuang ben Han Ma Rui Liu Yuzhen Ning Zhihong Zhao Xudong Zhang Qiang Li Kesong Liu School of Materials Science and Engineering Shenyang Ligong University Tianmushan Laboratory School of Equipment Engineering Shenyang Ligong University Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology School of Chemistry Beihang University School of Mechanical Engineering and Automation Beihang University

Controllable transportation of bubbles in surfactant or aqueous is very important in daily chemical products, food fermentation,mineral flotation and other fields. However, bubbles are mainly dominated by buoyancy and move upward in solution, which makes the manipulation of bubbles difficult. Although some progress has been made in controlling underwater bubbles,achieving continuous transportation and collection of underwater bubbles without relying on external forces is still a great challenge. To this end, we bionically designed a flexible polydimethylsiloxane(PDMS) porous surface with dual-Janus characteristics. Namely, a porous PDMS membrane integrating structural gradient and wettability gradient realizes the underwater anti-buoyancy unidirectional transportation of bubbles without external force input, and possesses the capability of underwater gas anti-buoyancy transportation and storage. This work provides inspiration and direction for the development and design of underwater gas transportation and storage devices and provides innovative thinking for the implementation of seabed carbon dioxide storage technology.

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粉浆浇注制备大尺寸ITO靶材工艺

中国有色金属学报 2014年第9期24卷 2333-2338页

作者：钟景明岳坤孙本双王东新西北稀有金属材料研究院宁夏特种材料重点实验室石嘴山753000 国家钽铌特种金属材料工程技术研究中心石嘴山753000 中色(宁夏)东方集团有限公司石嘴山753000

研究分散剂、pH值和固相含量对铟锡氧化物(ITO)浆料稳定性、流变性的影响,以及粉浆浇注压力对坯体密度的影响。结果表明:当聚丙烯酸(PAA)质量分数为0.5%、聚乙二醇(PEG)质量分数为1.5%、pH值为9、ITO固相含量为70%(质量分数)时,调制的... 详细信息

研究分散剂、pH值和固相含量对铟锡氧化物(ITO)浆料稳定性、流变性的影响,以及粉浆浇注压力对坯体密度的影响。结果表明:当聚丙烯酸(PAA)质量分数为0.5%、聚乙二醇(PEG)质量分数为1.5%、pH值为9、ITO固相含量为70%(质量分数)时,调制的浆料的流变性和稳定性最佳,并在注浆压力为1.5 MPa的条件下制备出相对密度为68%的高密度粉浆浇注坯体;对该素坯进行常压烧结制备了相对密度高于99.5%的ITO靶材。对靶材的组织与成分分析发现,粉浆浇注ITO靶材的结构为氧化锡完全固溶于氧化铟的单一立方In2O3结构,同时In、Sn和O元素分布均匀,无元素富集现象,晶粒尺寸均匀,完全满足八代以上镀膜线的应用技术要求。

关键词： ITO靶材粉浆浇注浆料性能微观组织

Optical and electrical properties of room temperature preparedα-IGZO thin films using an In_(2)Ga_(2)ZnO_(7) ceramic target

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Journal of Central South University 2022年第4期29卷 1062-1074页

作者： ZHANG Yu CHEN Jie SUN ben-shuang LIU Shuai WANG Zhi-jun LIU Shu-han SHU Yong-chun HE Ji-lin School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China College of Sciences Xi’an Shiyou UniversityXi’an 710065China State Key Laboratory of Special Rare Metal Materials Northwest Rare Metal Materials Research InstituteShizuishan 753000China

In this study,a high-purity In_(2)Ga_(2)ZnO_(7) ceramic target was used to deposit indium gallium zinc oxide(IGZO)films by RF magnetron sputtering *** microstructure,growth state,optical and electrical properties of the IGZO films were *** results showed that the surface of the IGZO film was uniform and smooth at room *** the substrate temperature increased,the surface roughness of the film gradually *** room temperature to 300℃,all the films maintained amorphous phase and good thermal ***,the transmission in the visible region decreased from 91.93%to 91.08%,and the band gap slightly decreased from 3.79 to 3.76 *** characterization of the film via atomic force microscope(AFM)and X-ray photoelectron spectroscopy(XPS)demonstrated that the film prepared at room temperature exhibited the lowest surface roughness and the largest content of oxygen *** the rise in temperature,the non-homogeneous particle distribution,increase in the surface roughness,and reduction in the number of oxygen vacancies resulted in lower performance of theα-IGZO *** analysis showed that the best optical and electrical properties can be obtained by depositing IGZO films at room temperature,which indicates their potential applications in flexible substrates.

关键词： oxide ceramic sputtering film microstructure photoelectric performance

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微波烧结制备ITO靶材的工艺

粉末冶金材料科学与工程 2011年第3期16卷 392-396页

作者：袁振易健宏孙本双钟景明中南大学粉末冶金国家重点实验室长沙410083 中色(宁夏)东方集团有限公司石嘴山753000

采用单相ITO(indium tin oxide,铟锡氧化物)复合粉末,经过压制成形后,在纯氧气氛下微波烧结制备ITO靶材,研究烧结温度、保温时间和压制压力等主要工艺参数对ITO靶材致密化的影响。结果表明:靶材的相对密度随烧结温度升高而增大;在1 600... 详细信息

采用单相ITO(indium tin oxide,铟锡氧化物)复合粉末,经过压制成形后,在纯氧气氛下微波烧结制备ITO靶材,研究烧结温度、保温时间和压制压力等主要工艺参数对ITO靶材致密化的影响。结果表明:靶材的相对密度随烧结温度升高而增大;在1 600℃烧结时,靶材的相对密度随保温时间增加先增大后减小,在保温1.5 h时相对密度达到最大值(98.67%),高温长时间烧结对ITO靶材的致密化不利。微波烧结的ITO靶材显微组织均匀,晶粒尺寸较均匀,约为6～8μm。不同温度下制备的ITO靶材均无SnO2相析出,仍是单一的固溶体相,不存在第二相。

关键词： ITO靶材微波烧结相对密度

掺锡氧化铟陶瓷靶材在直流磁控溅射过程中“结瘤”的形成与演化

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人工晶体学报 2013年第8期42卷 1590-1594页

作者：侯俊峰李志友周科朝孙本双姜鹤中南大学粉末冶金国家重点实验室长沙410083 国家钽铌特种金属材料工程技术研究中心石嘴山753000

以共沉淀ITO粉制备的陶瓷靶材为溅射靶,采用EDX、XRD、SEM研究了靶材在磁控溅射过程中"结瘤"的化学组分及物相组成,并对不同阶段"结瘤"的微观结构进行表征,探讨了"结瘤"的生长演化过程及形成机理。结果表明:"结瘤"与靶材基体具有相同的... 详细信息

以共沉淀ITO粉制备的陶瓷靶材为溅射靶,采用EDX、XRD、SEM研究了靶材在磁控溅射过程中"结瘤"的化学组分及物相组成,并对不同阶段"结瘤"的微观结构进行表征,探讨了"结瘤"的生长演化过程及形成机理。结果表明:"结瘤"与靶材基体具有相同的化学组成及物相结构,其生长演化分为锥状"结瘤"的形成及生长、锥顶外皮脱落、"结瘤"断裂、断面平滑、诱发新"结瘤"产生5个阶段。溅射过程中的"自溅射"效应使外来杂质颗粒和In2O3分解产生的InO在靶材表面形成的凸起逐渐长大并最终形成"结瘤"。

关键词： ITO靶材结瘤溅射凸起

Nb-40Ti-15Al合金中硼的微合金化细晶作用

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航空材料学报 2013年第4期33卷 9-13页

作者：汪燕青刘兆刚孙本双钟景明宁夏大学物理与电气信息学院银川750021 国家钽铌特种金属材料工程技术研究中心宁夏大武口753000

利用金相显微镜(OM)、X衍射(XRD)、扫描电镜(SEM)和能谱(EDS)等测试设备分析了微量硼元素对Nb-40Ti-15Al合金的晶粒细化作用以及硼在晶粒内和晶界的分布情况。结果表明,当合金中硼含量高于0.5%(质量分数)时,晶粒细化开始变得显著,预期... 详细信息

利用金相显微镜(OM)、X衍射(XRD)、扫描电镜(SEM)和能谱(EDS)等测试设备分析了微量硼元素对Nb-40Ti-15Al合金的晶粒细化作用以及硼在晶粒内和晶界的分布情况。结果表明,当合金中硼含量高于0.5%(质量分数)时,晶粒细化开始变得显著,预期对合金的低温脆性有一定程度的改善效果。背散射电子像(BSE)显示硼元素大量富集在晶界上,从而得出硼的细晶作用主要缘于其在合金的B2/β相基体中固溶度甚小,从而导致凝固前沿成分过冷。

关键词：低密度高温合金金属间化合物晶粒细化 Nb—Ti Al合金