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Structure and Mechanical Performance of Nitrogen Doped Diamond-like Carbon Films

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Journal of Materials Science & Technology 2007年第4期23卷 491-494页

作者： Huayu ZHANG Liang-xue LIU Yulei WANG Hongtao MA Fanxin LIU Harbin Institute of Technology Shenzhen Graduate School Shenzhen518055 China sae Technologies Development （Dongguan） Co. Ltd. Dongguan 523087 China

Nitrogen doped diamond-like carbon （DLC：N） films were prepared by electron cyclotron resonance chemical vapor deposition （ECR-CVD） on polycrystalline Si chips. Film thickness is about 50 nm. Auger electron spectroscopy （AES） was used to evaluate nitrogen content, and increasing N2 flow improved N content from 0 to 7.6%. Raman and X-ray photoelectron spectroscopy （XPS） analysis results reveal CN-sp^3C and N-sp^2C structure. With increasing the N2 flow, sp^3C decreases from 73.74% down to 42.66%, and so does N-sp^3C from 68.04% down to 20.23%. The hardness decreases from 29.18 GPa down to 19.74 GPa, and the Young＇s modulus from 193.03 GPa down to 144.52 GPa.

关键词： Nitrogen doped diamond-like carbon films ECR-CVD Structure Mechanical performance

The use of facial expressions in measuring students’interaction with distance learning environments during the COVID-19 crisis

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Visual Informatics 2023年第1期7卷 1-17页

作者： Waleed Maqableh Faisal Y.Alzyoud Jamal Zraqou Luminus Technical University College SAE Amman InstituteAmmanJordan Isra University AmmanJordan University of Petra AmmanJordan

Digital learning is becoming increasingly important in the crisis COVID-19 and is widespread in most *** proliferation of smart devices and 5G telecommunications systems are contributing to the development of digital learning systems as an alternative to traditional learning *** learning includes blended learning,online learning,and personalized learning which mainly depends on the use of new technologies and strategies,so digital learning is widely developed to improve education and combat emerging disasters such as COVID-19 *** the tremendous benefits of digital learning,there are many obstacles related to the lack of digitized curriculum and collaboration between teachers and ***,many attempts have been made to improve the learning outcomes through the following strategies:collaboration,teacher convenience,personalized learning,cost and time savings through professional development,and *** this study,facial expressions and heart rates are used to measure the effectiveness of digital learning systems and the level of learners’engagement in learning *** results showed that the proposed approach outperformed the known related works in terms of learning *** results of this research can be used to develop a digital learning environment.

关键词： E-learning COVID-19 Face-to-face learning Facial expressions Heart pulse

LOW FLYING HEIGHT MEASUREMENT WITH MULTI-WAVELENGTH INTERFEROMETRY

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Chinese Journal of Mechanical Engineering 2008年第3期21卷 108-111页

作者： WANG Wei LAI Wuxing SHI Tielin TAO Wei CHENG Xinjian School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074. China Tnbology ＆ Mechanical Characterization Division SAE Magnetics （H.K.） Ltd. Dongguan 523087 China

A method for measurement of ultra-low flying height in head-disk spacing is described. Three different wavelengths are selected out from white light by filters to measure the spacing simultaneously. Besides solving the ambiguity problem, a more reliable result is achieved by using weighted average of measurement results from three different wavelengths, where the weight is dependent upon spacing. Fringe-bunching correction algorithm （FBC） and spot-tilling technique are adopted to suppress calibration and random errors. Moreover, incident bandwidth correction （IBC） method is introduced to compensate the error caused by low monochromaticity of incident light. Based on dynamic flying height tester （DFHT Ⅱ）, with the redesigned of photo-electric conversion and signal acquirement module, an instrument has been developed. And comparing the experimental data from the instrument with those from a KLA-FHT D6, the discrepancy is less than 5%. It indicates that the instrument is suitable to perform ultra-low flying height measurement and satisfies the reauirement of magnetic heads manufacturing.

关键词： Flying height measurement Multi-wavelength interferometry Incident bandwidth

The Relationship of Corporate Culture and Positive Conflict Management

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厦门大学学报（自然科学版） 2002年第S1期41卷 253-254页

作者： Wai-Hung Ng S F Lee sae Magnetics （H.K.） Ltd. HKSAR Hong Kong Productivity Council Hong Kong China Hong Kong

With a unique corporate culture based on ancient Ch in ese wisdom being implemented at workplace for more than 10 years, we have been e ncountering various issue of managing conflicts, in particular at organization r estructure period, although we perceive that conflict does not necessarily have dysfunctional effect on our group performance. However, conflicts between and am ong various levels of the organization hierarchy are inevitably creating certain impact on our organization cohesiveness, performa...

关键词： The Relationship of Corporate Culture and Positive Conflict Management

“氢”车熟路? 国际氢能与燃料电池汽车大会(FCVC 2018)观后感

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汽车之友 2018年第23期 100-107页

作者：雷鸣 sae(摄影) sae

纯电动汽车早就不新鲜了,当然很多自认为精通传统汽车的人对它仍是一知半解,不过那也无妨,毕竟这类车注定只是过客。关于未来汽车的终极形态,也就是氢燃料电池汽车,大家倒是要好好研究一下了,否则将来只能是不明觉厉。这次去如皋,我就... 详细信息

纯电动汽车早就不新鲜了,当然很多自认为精通传统汽车的人对它仍是一知半解,不过那也无妨,毕竟这类车注定只是过客。关于未来汽车的终极形态,也就是氢燃料电池汽车,大家倒是要好好研究一下了,否则将来只能是不明觉厉。这次去如皋,我就是要恶补一下这方面的知识,同时也借机探探虚实。

关键词：氢燃料电池汽车氢能国际纯电动汽车未来汽车

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重在坚守 2021中国大学生巴哈大赛

汽车之友 2021年第22期 64-69页

作者：黎叔 Baja sae(图) Baja sae

经过768天的漫长等待,2021中国大学生巴哈大赛推迟一个月后终于在9月24-28日在襄阳开赛。就在赛前不到一个月的时侯,厦门和哈尔滨先后爆出疫情,导致卫冕冠军厦门理工学院队无法参赛,同时,组委会也面临巨大的疫情防控压力。

关键词：厦门理工学院卫冕冠军疫情防控大学生大赛赛前哈尔滨

Free Vibration Analysis of Rectangular Plate with Cutouts under Elastic Boundary Conditions in Independent Coordinate Coupling Method

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Computer Modeling in Engineering & Sciences 2023年第3期134卷 2093-2121页

作者： Qiuhong Li Wenhao Huang Joey Sanchez Ping Wang Qiang Ding Jiufa Wang College of Mechanical and Electrical Engineering Harbin Engineering UniversityHarbin150001China sae Concepts East BrunswickNJ08816USA No.709&Institute China Shipbuilding Industry Corporation(CSIC)Wuhan430205China No.710&Institute China Shipbuilding Industry Corporation(CSIC)Yichang443003China

Based on Kirchhoff plate theory and the Rayleigh-Ritz method,the model for free vibration of rectangular plate with rectangular cutouts under arbitrary elastic boundary conditions is established by using the improved Fourier series in combination with the independent coordinate coupling method(ICCM).The effect of the cutout is taken into account by subtracting the energies of the cutouts from the total energies of the whole *** vibration displacement function of the hole domain is based on the coordinate system of the hole domain in this *** the continuity condition of the vibration displacement function at the cutout,the transition matrix between the two coordinate systems is constructed,and the mass and stiffness matrices are completely *** a result,the calculation is simplified and the computational efficiency of the solution is *** this paper,numerical examples and modal experiments are presented to validate the effectiveness of the modeling methods,and parameters related to influencing factors of the rectangular plate are analyzed to study the vibration characteristics.

关键词： Rectangular plate with cutouts the independent coordinate coupling method elastic boundary conditions free vibration analysis

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无声的较量蔚来杯FSEC及爱驰杯FSAC

汽车之友 2019年第24期 82-87页

作者：黎明京无不详 China sae

2019年注定是中国大学生方程式系列大赛的重要一年,这年是中国大学生方程式(FSC)的十周年,也是中国大学生电动方程式(FSEC)六周年和中国大学生无人方程式(FSAC)三周年。今年也是FSEC和FSAC)第三次联合举办,比赛是第二年在珠海航展中心举... 详细信息

2019年注定是中国大学生方程式系列大赛的重要一年,这年是中国大学生方程式(FSC)的十周年,也是中国大学生电动方程式(FSEC)六周年和中国大学生无人方程式(FSAC)三周年。今年也是FSEC和FSAC)第三次联合举办,比赛是第二年在珠海航展中心举行,虽然临近的跑道上航班机声隆隆,但电动车的比赛却在无声中静静角力。

关键词：珠海航展第二年 FSA 大学生方程式电动车

TOF-SIMS analysis: Application to ultra-thin AWA film on magnetic head

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Science China Mathematics 2001年第S1期44卷 393-399页

作者： JIANG Zhicheng LIU Yiwei, Wah-Fuk Chung Chi-Yue Cheung Ichiro Yagi TIAN Hong Surface Analysis Laboratory, sae Magnetics (H. K.) Ltd., sae Tower, 38-42 Kwai Fung Crescent, Kwai Chung, N. T., Hong Kong, China Visiting professor from Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences sae Magnet HK Ltd Surface Anal Lab Kwai Chung Hong Kong Peoples R China

F-containing polymer was coated on the magnetic head of hard disc drive (HDD) as the ultra-thin (<20(?)) film of anti-wetting agent (AWA). A static TOF-SIMS method has been applied to measuring the thickness and coating uniformity of the ultra-thin film. TOF- SIMS is also used to study the micro-tribology and transfer of lubricant between the magnetic head and media interface.

关键词： static-SIMS magnetic head ultra-thin film fluoride polymer thickness