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Capacitance of High-Voltage Coaxial Cable in plasma Immersion Ion Implantation

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Journal of Materials Science & Technology 2001年第1期17卷 41-42页

作者： X.B.Tian L.p.Wang D.T.k.kwok B.Y Tang p.k.chu Department of physics&Materials Science City University of Hong KongHong KongChina

plasma immersion ion implantation (pIII) is an excellent technique for the surf see modification of complex-shaped components. Owing to pulsed operation mode of the high voltage and large slew rate, the capacitance on the high-voltage coaxial cable can be detrimental to the process and cannot be ignored. In fact, a significant portion of the rise-time/fall-time of the implantation voltage pulse and big initial current can be attributed to the coaxial cable.

关键词： surface modification ion implantation high voltage mode of

In situ synthesis of nanostructured titania film on NiTi shape memory alloy by Fenton’s oxidation method

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中国有色金属学会会刊：英文版 2007年第5期17卷 902-906页

作者：储成林胡涛 S.L.Wu 王如萌董寅生林萍华 C.Y.chung p.k.chu School of Materials Science and Engineering Southeast University Nanjing 211189 China Department of physics and Materials Science City University ofHong Kong Hong Kong China

Fenton’s oxidation method was successfully used to synthesize an ideal titania film in situ on NiTi shape memory alloy(SMA) for medical applications. Characterized with scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffractometry, inductively coupled plasma mass spectrometry and electrochemical tests, it is found that the titania film produced by Fenton’s oxidation method on NiTi SMA is nanostructured and has a Ni-free zone near its top surface, which results in a notable improvement in corrosion resistance and a remarkable decrease in leaching of harmful Ni ions from NiTi SMA in simulated body fluids. The improvement of effectiveness to corrosion resistance and the reduction in Ni release of NiTi SMA by Fenton’s oxidation method are comparable to those by oxygen plasma immersion ion implantation reported earlier.

关键词： NiTi记忆合金氧化反应薄膜腐蚀

Bioactivity of Ceramic Coating on Ti6Al4V Fabricated By Microarc plasma Oxidation

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Southwestern Institute of physics Annual Report 2003年第1期 138-140页

作者： SHENLiru LIUChenling LIJiong p.k.chu 不详 Departmentofphysics＆MaterialsScience CityUniversityofHongKong83TatCheeAvenueKowloonHongKong

Ti6Al4V is a widely applied in medical implants such as bone, joint, and teeth due to its excellent mechanical properties, corrosion resistance, plasticity and the biocompatibility of the surface oxide. However, the native surface oxide film is quite thin (about 5 nm)and techniques such as microarc oxidation,plasma sprayed hydroxyapatitae and plasma immersion ion implantation are used to synthesize thicker surface titanium oxide.

关键词：微弧氧化生物活性 Ti6A14V 氧化钛保护膜金属材料

principle and process Window of Cerium Dioxide Thin Film Fabrication with Dual plasma Deposition

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Journal of Materials Science & Technology 2001年第1期17卷 29-30页

作者： L.p. Wang B. Y Tang X.B. Tian YX.Leng Q. YZhang and p.k.chu Department of physics and Materials Science, City University of Hong kong, 83 Tat Chee Avenue, kowloon, Hong kong, China City Univ Hong kong Dept Phys & Mat Sci Kowloon Hong Kong Peoples R China

Cerium dioxide, CeO2, is a potentially superior material in a myriad of areas, and many methods have been proposed to deposit single crystal CeO2 thin films. A novel fabrication technique utilizing dual plasma generated by metal vacuum arc (MEVVA) and radio frequency (RF) is discussed in this paper. We have recently conducted a systematic investigation to determine the optimal process window to deposit CeO2 thin films'on Si(100) substrates. The X-ray diffraction results show the existence of CeO2(100) in the as-deposited sample.

关键词： Thin Window principle and process Window of Cerium Dioxide Thin Film Fabrication with Dual plasma Deposition

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磷掺杂类金刚石薄膜的制备与性能研究

真空科学与技术学报 2005年第2期25卷 123-126页

作者：王进 Sunny C.H.kwok 陈俊英杨萍黄楠 p.k.chu 西南交通大学材料科学与工程学院材料先进技术教育部重点实验室成都610031 香港城市大学物理与材料系

应用等离子体浸没离子注入与沉积方法合成了磷掺杂的类金刚石(p doped diamond like carbon,p-aopea DLC)薄膜。结构分析表明磷以微米级岛状结构分散于DLC薄膜表层,p的掺杂增加了DLC薄膜的无序性,俄歇能谱证明岛型区域是由p、C、O三种... 详细信息

应用等离子体浸没离子注入与沉积方法合成了磷掺杂的类金刚石(p doped diamond like carbon,p-aopea DLC)薄膜。结构分析表明磷以微米级岛状结构分散于DLC薄膜表层,p的掺杂增加了DLC薄膜的无序性,俄歇能谱证明岛型区域是由p、C、O三种元素形成的化合物,衰减全反射傅里叶红外光谱(ATR-FTIR)的分析结果显示存在p-O-p和p-p-C的非对称伸缩振动。掺杂表面表现出强烈的亲水性(水接触角为16.9°),体外血小板粘附实验结果显示,p掺杂DLC薄膜表面粘附的血小板少且变形小,表现出的血液相容性优于热解碳和未改性DLCo。p-doped DLC薄膜与水的界面张力为2.7 nJ/cm2,具有较理想的接近于血细胞的界面张力,因此与血液保持了较高的相容性。

关键词：类金刚石薄膜磷掺杂性能研究等离子体浸没离子注入 DLC薄膜 diamond 制备 carbon 界面张力衰减全反射血小板粘附血液相容性沉积方法 like 俄歇能谱元素形成伸缩振动分析结果红外光谱水接触角薄膜表面微米级

等离子体浸没离子注入合成DLC薄膜的血小板黏附研究

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等离子体浸没离子注入合成DLC薄膜的血小板黏附研究

prediction and optimization of flue pressure in sintering process based on SHAp

第九届全国生物材料学术会议（CBMS-9）

作者：陈俊英黄楠杨萍冷永祥万国江王进孙鸿 p.k.chu 西南交通大学材料科学与工程学院西南交通大学材料科学与工程学院西南交通大学材料科学与工程学院西南交通大学材料科学与工程学院西南交通大学材料科学与工程学院西南交通大学材料科学与工程学院西南交通大学材料科学与工程学院香港城市大学物理与材料科学系

利用等离子体浸没离子注入沉积技术（pⅢ-D）于室温下在硅片上合成了类金刚石薄膜涂层。表面形貌用原子力显微镜（AFM）进行分析。采用体外血小板黏附试验评价了薄膜的血液相容性。结果表明,薄膜血液相容性受沉积过程中气体流量的影响。

关键词：等离子体浸没离子注入沉积技术类金刚石薄膜血液相容性

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 346-359页

作者： Mingyu Wang Jue Tang Mansheng chu Quan Shi Zhen Zhang School of Metallurgy Northeastern UniversityShenyang 110819China Liaoning Low-Carbon Steelmaking Technology Engineering Research Center Northeastern UniversityShenyang 110819China Engineering Research Center of Frontier Technologies for Low-Carbon Steelmaking(Ministry of Education) Shenyang 110819China

Sinter is the core raw material for blast *** pressure,which is an important state parameter,affects sinter *** this paper,flue pressure prediction and optimization were studied based on the shapley additive explanation(SHAp)to predict the flue pressure and take targeted adjustment ***,the sintering process data were collected and processed.A flue pressure prediction model was then constructed after comparing different feature selection methods and model algorithms using SHAp+extremely random-ized trees(ET).The prediction accuracy of the model within the error range of±0.25 kpa was 92.63%.SHAp analysis was employed to improve the interpretability of the prediction *** effects of various sintering operation parameters on flue pressure,the relation-ship between the numerical range of key operation parameters and flue pressure,the effect of operation parameter combinations on flue pressure,and the prediction process of the flue pressure prediction model on a single sample were analyzed.A flue pressure optimization module was also constructed and analyzed when the prediction satisfied the judgment *** operating parameter combination was then *** flue pressure was increased by 5.87%during the verification process,achieving a good optimization effect.

关键词： sintering process flue pressure shapley additive explanation prediction optimization

Treadmill exercise in combination with acousto-optic and olfactory stimulation improves cognitive function in App/pS1 mice through the brain-derived neurotrophic factor-and Cygb-associated signaling pathways

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Neural Regeneration Research 2025年第9期20卷 2706-2726页

作者： Biao Xiao Chaoyang chu Zhicheng Lin Tianyuan Fang Yuyu Zhou chuxia Zhang Jianghui Shan Shiyu Chen Liping Li Department of physiology and pharmacology Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Ningbo key Laboratory of Behavioral Neuroscience Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina key Laboratory of Addiction Research of Zhejiang province NingboZhejiang ProvinceChina

A reduction in adult neurogenesis is associated with behavioral abnormalities in patients with Alzheimer's ***,enhancing adult neurogenesis represents a promising therapeutic approach for mitigating disease symptoms and ***,nonpharmacological interventions aimed at inducing adult neurogenesis are currently *** individual non-pharmacological interventions,such as aerobic exercise,acousto-optic stimulation,and olfactory stimulation,have shown limited capacity to improve neurogenesis and cognitive function in patients with Alzheimer's disease,the therapeutic effect of a strategy that combines these interventions has not been fully *** this study,we observed an age-dependent decrease in adult neurogenesis and a concurrent increase in amyloid-beta accumulation in the hippocampus of amyloid precursor protein/presenilin 1 mice aged 2-8 *** deposition became evident at 4 months,while neurogenesis declined by 6 months,further deteriorating as the disease ***,following a 4-week multifactor stimulation protocol,which encompassed treadmill running(46 min/d,10 m/min,6 days per week),40 Hz acousto-optic stimulation(1 hour/day,6 days/week),and olfactory stimulation(1 hour/day,6 days/week),we found a significant increase in the number of newborn cells(5'-bromo-2'-deoxyuridine-positive cells),immature neurons(doublecortin-positive cells),newborn immature neurons(5'-bromo-2'-deoxyuridine-positive/doublecortin-positive cells),and newborn astrocytes(5'-bromo-2'-deoxyuridine-positive/glial fibrillary acidic protein-positive cells).Additionally,the amyloid-beta load in the hippocampus *** findings suggest that multifactor stimulation can enhance adult hippocampal neurogenesis and mitigate amyloid-beta neuropathology in amyloid precursor protein/presenilin 1 ***,cognitive abilities were improved,and depressive symptoms were alleviated in amyloid precursor protein/presenilin 1 mice

关键词： acousto-optic stimulation adult neurogenesis Alzheimer's disease amyloid precursor protein/presenilin 1 mice amyloid-beta deposition brain cell apoptosis cognitive impairment depression-like behavior involuntary treadmill exercise olfactory stimulation serum metabolites

Morphology engineering of ZnO micro/nanostructures under mild conditions for optoelectronic application

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 498-503页

作者： Liang chu Haoyu Shen Hudie Wei Hongyu Chen Guoqiang Ma Wensheng Yan Institute of Carbon Neutrality and New Energy&School of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018China School of Applied physics and Materials Wuyi UniversityJiangmen 529020China

Zinc oxide(ZnO)serves as a crucial functional semiconductor with a wide direct bandgap of approximately 3.37 *** reaction is commonly used in the synthesis of ZnO micro/nanostructures,given its low cost,simplicity,and easy ***,ZnO morphology engineering has become desirable through the alteration of minor conditions in the reaction process,particularly at room *** this work,ZnO micro/nanostructures were synthesized in a solution by varying the amounts of the ammonia added at low temperatures(including room temperature).The formation of Zn^(2+)complexes by ammonia in the precursor regulated the reaction rate of the morphology engineering of ZnO,which resulted in various structures,such as nanoparticles,nanosheets,microflowers,and single ***,the obtained ZnO was used in the optoelectronic application of ultraviolet detectors.

关键词： morphology engineering low temperature ZnO nanosheets microflowers ultraviolet detector