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Selective removal technology using chemical etching and excimer assistance in precision recycle of color filter

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Transactions of Nonferrous Metals Society of China 2011年第A01期21卷 210-214页

作者： pai-shan pa Digital Content Design Graduate School of Toy and Game Design National Taipei University of Education Taipei City 10671 China

Color filters are produced using semiconductor production techniques although problems with low yield remain to be addressed. This study presents a new means of selective removal using excimer irradiation, chemical etching, or electrochemical machining on the fifth generation TFT LCDs. The selective removal of microstructure layers from the color filter surface of an optoelectronic flat panel display, as well as complete removal of the ITO thin-films, RGB layer, or resin black matrix (BM) layer from the substrate is possible. Individual defective film layers can be removed, or all films down to the Cr layer or bare glass can be completely eliminated. Experimental results demonstrate that defective ITO thin-films, RGB layers, or the resin BM layer can now be recycled with a great precision. When the ITO or RGB layer proves difficult to remove, excimer light can be used to help with removal. During this recycling process, the use of 225 nm excimer irradiation before chemical etching, or electrochemical machining, makes removal of stubborn film residues easy, effectively improving the quality of recycled color filters and reducing fabrication cost.

关键词： chemical etching excimer light selective removal technology display color filter

Effective tool design of three-rank form as precision removal-process of ITO thin-films

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中国有色金属学会会刊：英文版 2009年第B09期19卷 232-237页

作者： pai-shan pa Digital Content Design Graduate School of Toy and Game DesignNational Taipei University of Education

A new effective tool design of three-rank form of electroremoval was present using a precision recycle system offering faster performance in removing the indium-tin-oxide(ITO) thin-films on color filter surface of displays. Higher electric power is not required since the three-rank form tool is adopted as a feeding mode to reduce the response area. The low yield of ITO persists throughout the entire semiconductor production process. By establishing a recycle process of ultra-precise removal of the thin-film nanostructure, defective products in the optoelectronic semiconductors industry can be effectively recycled, decreasing both production costs and pollution. A 5th generation TFT-LCD was used. The design features of the removal processes for the thin-films and the tool design of three-rank form were of major interest. For the precision removal processes, a pulsed current can improve the effect of dreg discharge and contributes to the achievement of a fast workpiece (displays' color filter) feed rate, but raises the current rating. High flow velocity of the electrolyte with a high rotational speed of the tool electrodes elevates the ITO removal effect. A displays' color filter with a fast feed rate is combined with enough electric power to provide highly effective removal. A small thickness of the rank and a small arc angle of the negative-electrode correspond to a higher removal rate for ITO-film. An effective three-rank form negative-electrode provides larger discharge mobility and better removal effect. It only needs a short period of time to remove the ITO easily and cleanly.

关键词：工具设计薄膜材料 ITO

Molecular Characteristics of New Wheat Starch and Its Digestion Behaviours

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Journal of Integrative Agriculture 2014年第5期13卷 1146-1153页

作者： ZHOU Zhong-kai HUA Ze-tian YANG Yan ZHENG pai-yun ZHANG Yan CHEN Xiao-shan Key Laboratory of Food Nutrition and Safety Ministry of Education/Tianjin University of Science and Technology China National Japonica Rice R&D Center

In order to understand the effect of starch molecular characteristics on the gel structure, which subsequently influence the gel digestion behaviours, three wheat starches, control （conventional wheat starch）, two new wheat cultivars with different genetic backgrounds （by knocking out SBE IIb and SBE IIa, respectively） were used in this study. In comparison with control, slight differences in the morphology of the starch granules of new wheat 1 were observed, whereas the starch granules of new wheat 2 had irregular shapes both for A-type granules and B-type granules. Starch molecular weight size was determined by SE-HPLC, and the results indicate that there was a subtle increase in the amylose content in the starch of new wheat 1 compared to that of control. The starch of new wheat 2 had the highest amylose content, and the molecular weight （MW） of its amylopectin was the lowest among the three starches. Fourier transform infrared spectroscopy （FTIR） was employed to investigate starch gel structure and the results suggest that the molecules of starch gel from new wheat 2 are more likely to re-associate to form an organized conformation. The digestion behaviours of the three starch gels were measured using a mixture of pancreatin a-amylase and amyloglucosidase. The results indicated that the starch gels of control and new wheat 1 had very high digestibility of 91.7 and 91.9%, respectively, whereas the digestibility of wheat 2 starch gel was only 36.2%. In comparison with the digestion curve pattems of control and new wheat 1 starch gels, the new wheat 2 exhibited a much lower initial velocity. These results indicated that the molecules in the starch of new wheat 2 are more readily to re-associate to form an organized structure during gel formation because of its unique molecular characteristics.

关键词： wheat starch starch gels molecular characteristics digestion

Microstructure,Mechanical Properties,and Corrosion Behavior of Mg-Al-Ca Alloy Prepared by Friction Stir Processing

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Acta Metallurgica Sinica(English Letters) 2022年第5期35卷 703-713页

作者： Wen Wang shan-Yong Chen Ke Qiao pai Peng Peng Han Bing Wu Chen-Xi Wang Jia Wang Yu-Hao Wang Kuai-She Wang School of Metallurgical Engineering National and Local Joint Engineering Research Center for Functional Materials ProcessingXi’an University of Architecture and TechnologyXi’an710055China

Friction stir processing(FSP)was used to modify the microstructure and improve the mechanical properties and corrosion resistance of an Mg-Al-Ca *** results demonstrated that,after FSP,the grain size of the Mg-Al-Ca alloy was decreased from 13.3 to 6.7μ***,the Al_(8)Mn_(5) phase was broken and dispersed,and its amount was *** yield strength and ultimate tensile strength of the Mg-Al-Ca alloy were increased by 17.0%and 10.1%,respectively,due to the combination of fine grain,second phase,and orientation strengthening,while the elongation was slightly *** immersion and electrochemical corrosion rates in 3.5 wt%NaCl solution decreased by 18.4%and 37.5%,respectively,which contributed to grain ***,the stress corrosion cracking(SCC)resistance of the modified Mg-Al-Ca alloy decreased significantly,which was mainly due to the filiform corrosion induced by the Al_(8)Mn_(5) *** was mainly controlled by anodic dissolution,while the cathodic hydrogen evolution accelerated the SCC process.

关键词： Friction stir processing Mg-Al-Ca alloy Second phase Mechanical properties Stress corrosion cracking

A Novel Magnetic Resonance Rectography for Rectal Cancer Staging

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Chinese Medical Journal 2018年第20期131卷 2506-2507页

作者： Xue Tang Shi-pai Zhang Yan Luo Li-Gang Xia Jing-shan Gong Department of Radiology Shenzhen People's Hospital The Second Clinical Medical College of Jinan University Shenzhen Guangdong 518020 China Department of Gastrointestinal Surgery Shenzhen People's Hospital The Second Clinical Medical College of Jinan University Shenzhen Guangdong 518020 China

To the Editor： Magnetic resonance （MR） imaging plays an important role in rectal cancer （RC） treatment decision-making. There is controversy about whether it is necessary to use rectal contrast materials during MR imaging for RC. Feces and gas in the rectum may affect the display of lesions and induce artifacts, especially on diffusion-weighted image （DWI）.

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Significant“smaller is softer”in amorphous silicon via irradiation-me diate d surface modification

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Journal of Materials Science & Technology 2023年第35期166卷 106-112页

作者： Yuecun Wang Lin Tian Meng Li Zhiwei shan Center for Advancing Materials Performance from the Nanoscale(CAMP-Nano)&Hysitron Applied Research Center in China(HARCC) State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049China Institute of Materials Physics University of GöttingenGöttingen 37077Germany Department of Chemical and Petroleum Engineering University of PittsburghPittsburghPA 15216United States of America

“Smaller is softer”is a reverse size dependence of strength,defying the“smaller is stronger”*** usually results from surface-mediated displacive or diffusive deformation and is mainly found in some ultra-small-scale(below tens of nanometers)metallic ***,making use of the surface modifi-cation via ion beam irradiation,we bring the“smaller is softer”into being in a covalently-bonded,hard,and brittle material-amorphous Si(a-Si)at a much larger size regime(pathway via ion irradiation is not only of particular interest to tai-lor the strength and deformation behaviors in small-sized a-Si or other covalently-bonded amorphous solids but also of practical relevance to the utility of a-Si in microelectronics and microelectromechanical systems.

关键词： Amorphous silicon Micropillars “Smaller is softer” Ion irradiation

Pulmonary vein antrum isolation of pre-excited atrial fibrillation

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Chinese Medical Journal 2013年第14期126卷 2613-2619页

作者： FENG Xiang-fei WANG Qun-shan SUN Jian ZHANG Peng-pai WANG Jun WANG Yue-peng LIYi-gang Department of Cardiology Xinhua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China

Background Pulmonary vein antrum isolation （PVAI） of pre-excited atrial fibrillation （AF） is controversial. This study aimed to observe the therapeutic effects of PVAI on pre-excited AF. Methods Twenty-nine patients with pre-excited AF were prospectively divided into a PVAI group （group I, 19 cases） and a control group （group II, 10 cases）. To each case in group I, PVAI was performed, and then electroanatomical mapping of accessory pathways （AP） and ablation were constructed on a three-dimensional （3D） map of the valve annulus. Only AP ablation was performed in each case of group II. Results Of the 29 cases, three were found to have dual APs, two had intermittent APs, and the remaining 24 had single APs. All APs were successfully ablated after the procedure. There were no significant statistical differences in the AP procedure duration （（77.4±21.3） minutes vs. （85.3±13.1） minutes）, the AP ablation time （（204±34） seconds vs. （223±62） seconds） and the AP X-ray exposure time （（18.6±4.4） minutes vs. （19.1±4.5） minutes） respectively between groups I and II. As compared with the control group （5 of 10 cases, 50%）, the PVAI group had a significantly lower AF recurrence rate （2 of 19 cases, 11%; P 〈0.05） during follow-up of （20.5±10.0） months. All seven patients who recurred were successfully abolished by a second ablation. Conclusions In patients with pre-excited AF, PVAI is an effective therapeutic approach with a low AF recurrence rate. 3D electroanatomical maps of AP contributed to the high success rate of ablation without significantly prolonging of operational duration and X-ray exposure time.

关键词： pre-excitation atrial fibrillation pulmonary vein antrum isolation 3D map

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海口市居民住房保障方式选择偏好研究

海南大学学报（人文社会科学版） 2023年第6期41卷 59-68页

作者：王湃韩姗海南大学公共管理学院海南海口570228

建立良好的住房保障体系是海南自由贸易港建设在基础民生领域的应有之义。文章选取海口市作为实证调研区域,采用二元Logit回归模型,分析海口市居民住房保障方式的选择偏好及其影响因素,为住房保障政策设计提供有益参考。研究结果表明(:1... 详细信息

建立良好的住房保障体系是海南自由贸易港建设在基础民生领域的应有之义。文章选取海口市作为实证调研区域,采用二元Logit回归模型,分析海口市居民住房保障方式的选择偏好及其影响因素,为住房保障政策设计提供有益参考。研究结果表明(:1)515个受访者中住房实物保障方式和货币补贴方式的选择偏好大体相当,分别占比49%和51%;(2)个人因素、住房因素以及政策感知因素都对居民的住房保障方式选择偏好具有影响,处于不同家庭生命周期阶段的居民住房保障方式选择偏好不同,不同住房保障方式选择偏好的居民在意的住房因素也不同。研究结论(:1)住房保障政策改革需进一步提高货币补贴标准,推进两种住房保障方式并举(;2)应构建住房保障模式有条件转换机制,以满足居民在不同家庭生命周期阶段的动态住房需求。

关键词：住房保障方式选择偏好影响因素海口市

Two-dimensional MXenes and their applications

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Frontiers of physics 2023年第1期18卷 1-5页

作者： Guangcun shan Zejian Ding Yury Gogotsi School of Instrumentation Science and Opto-electronics Engineering Beihang UniversityBeijing 100091China Institute of Experimental Physics Saarland University66123 SaarbrückenGermany A.J.Drexel Nanomaterials Institute and Department of Materials Science and EngineeringDrexel UniversityPhiladelphiaPA 19104USA

Two-dimensional(2D)transition metal carbides,nitrides or carbonitrides(MXene)have attracted tremendous attention as a potentially the largest family of inorganic *** have a general formula Mn+1XnTx,where M is an early transition metal(2 or more can be present in a random mix or a specific order),X is C and/or N elements(oxygen can partially substitute),and T_(x)(x is variable)represent surface terminations,which can include reactive end groups(such as–OH and=O),halogens and chalcogens,and n can vary from 1 to 4(fractions are possible).All MXenes can either be produced as multilayer particles(ml-MXene)or delaminated(d-MXene)single-layer flakes.

关键词： materials. carbonitride dimensional