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International Journal of Nanomanufacturing最新文献

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Study on the analysis of the mechanism of EDM based on Su-Field 基于Su场的电火花加工机理分析研究
International Journal of Nanomanufacturing Pub Date : 2017-10-20 DOI: 10.1504/IJNM.2017.10008407
S. Ma, Zhanhui Wang, Lingyu Lin
{"title":"Study on the analysis of the mechanism of EDM based on Su-Field","authors":"S. Ma, Zhanhui Wang, Lingyu Lin","doi":"10.1504/IJNM.2017.10008407","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10008407","url":null,"abstract":"EDM is an important means of processing in mould processing industry. In this paper, the Su-Field analysis method is applied to study the mechanism of EDM, the application process of Su-Field analysis method to solve the problem of EDM discharge system was established, the microscopic process of EDM dielectric breakdown was described, the Su-Field model of the single pulse discharge four phases, discharge channel formation, breakdown discharge, galvanic corrosion throwing and the deionisation between the medium, was established, and finally the complete Su-Field model of single pulse discharge process of EDM was achieved. In the single-pulse discharge established Su-Field model basis, the factors affecting the processing speed, surface roughness and electrode wear were analysed, further integration of 76 standard solutions, the plan to solve the problem of instability in the discharge process was achieved, at the same time, a new way for the research of EDM process was provided.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"307"},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44266347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A study on the displacement analysis in the injection moulding for the camera-phone 照相手机注塑过程中的位移分析研究
International Journal of Nanomanufacturing Pub Date : 2017-10-20 DOI: 10.1504/IJNM.2017.10008410
Joo-Sang Lee
{"title":"A study on the displacement analysis in the injection moulding for the camera-phone","authors":"Joo-Sang Lee","doi":"10.1504/IJNM.2017.10008410","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10008410","url":null,"abstract":"Smartphones are currently the most popular electronic devices with high volume production activities driven by high demand and requirements for rapid turnaround time. The changes of displacement were analysed according to a variable of the gate size and runner system. The radial type and gate with large size were shown that better results in displacement. While the design and production of lenses, the key component of a camera, still need to be improved, the current technology has run into its limit with regard to trends in size and weight reduction. In this study, an injection moulding analysis was performed on plastic lenses that are widely employed for smartphone cameras. Specifically, the displacement of lenses at the time of injection moulding was studied by varying the gate size and runner system.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"333"},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49359498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A multiscale simulation investigation of dislocation behaviour of PCD failure process PCD破坏过程位错行为的多尺度模拟研究
International Journal of Nanomanufacturing Pub Date : 2017-10-20 DOI: 10.1504/IJNM.2017.10008422
Jinxuan Bai, Q. Bai
{"title":"A multiscale simulation investigation of dislocation behaviour of PCD failure process","authors":"Jinxuan Bai, Q. Bai","doi":"10.1504/IJNM.2017.10008422","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10008422","url":null,"abstract":"Although polycrystalline diamond (PCD) is ever viewed as brittle materials, it can present strong dislocation activity in certain condition. In this paper, the two dimensional discrete dislocation plastic (DDP) simulation under fully periodic boundary conditions was employed to study PCD dislocation behaviour. Crystal dissipation and entropy theory were introduced into the computational study to reveal dislocation density evolution and disordered sequence during PCD failure process. Our result showed that the developed model can capture the essential features of PCD dislocation evolution behaviour and realises accurate description of PCD failure process. Investigations of plastic dissipation and dislocation structure evolution reveal that the dislocation structure evolution plays a key role in the fracture process.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"384"},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44230353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
AFM-based imaging conditions optimisation of cell topography 基于afm的细胞形貌成像条件优化
International Journal of Nanomanufacturing Pub Date : 2017-10-20 DOI: 10.1504/IJNM.2017.10008413
Ya Li, Alamusi, S. Dong, Jinghe Wang, Haidong Liu
{"title":"AFM-based imaging conditions optimisation of cell topography","authors":"Ya Li, Alamusi, S. Dong, Jinghe Wang, Haidong Liu","doi":"10.1504/IJNM.2017.10008413","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10008413","url":null,"abstract":"Surface topography of cancer cell is particularly vital since cell frequently changes its shape as interacting with neighbouring cells and extracellular matrix. Atomic force microscope (AFM) has an extraordinary superiority in surface scanning of cells but the scanning consequence depends upon experiment conditions or experience primarily. In our study, a quadratic regression orthogonal rotation combination design was operated to acquire optimal parameters for cell profiling via AFM. By iterative calculation, the optimum AFM scanning of cell can be accomplished at setpoint of 0.61 V, scanning rate of 2.23 Hz and proportional gain of 3.85. Satisfactory surface morphology images of human bronchial epithelium BEAS-2B and pulmonary adenocarcinoma cell A549 were acquired at this calculated scanning condition, in which the details of surface coarse particle and cell junction structure are visible. This emerging insight into cell profiling may encourage the understanding of the underlying mechanism for cellular inner reconstruction during cell migration.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"341"},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45778564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical and electrical properties of Nd-doped ZnO films prepared by sol-gel method 溶胶-凝胶法制备nd掺杂ZnO薄膜的光学和电学性质
International Journal of Nanomanufacturing Pub Date : 2017-10-20 DOI: 10.1504/IJNM.2017.10008406
H. He, Zuoli He, Q. Shen
{"title":"Optical and electrical properties of Nd-doped ZnO films prepared by sol-gel method","authors":"H. He, Zuoli He, Q. Shen","doi":"10.1504/IJNM.2017.10008406","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10008406","url":null,"abstract":"ZnO films doped with Nd contents of 0%-0.81% were deposited by a chemical solution deposition and characterised by X-ray diffraction, field emission scanning electron microscopy, UV-vis and luminescent spectrophotometry and electrical measurement. The experiments revealed that the films have nano-scale particle size that increased with increasing Nd content. The Nd doping resulted in the obvious variations of transmittance in the UV-visible light range, the band gap and resistivity. Thin film showed an optimal optical and electrical properties at Nd content of 0.42%. The films also showed a strong band gap emission and a very weak emission related to intrinsic defect.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"295"},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45825790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A study on the prediction of tool wear in drilling the carbon fibre reinforced plastic 碳纤维增强塑料钻孔过程中刀具磨损预测研究
International Journal of Nanomanufacturing Pub Date : 2017-10-20 DOI: 10.1504/IJNM.2017.10008409
S. Kim, H. Shin, J. Oh, S. Yoo
{"title":"A study on the prediction of tool wear in drilling the carbon fibre reinforced plastic","authors":"S. Kim, H. Shin, J. Oh, S. Yoo","doi":"10.1504/IJNM.2017.10008409","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10008409","url":null,"abstract":"Carbon fibre reinforced plastics has a lot of merit such as mechanical characteristic, lightweight, and thermal resistance. For using carbon fibre reinforced plastics, the cutting and drilling process is necessary, and the study of optimal cutting conditions is very necessary, too. Generally, CFRP needs the processes of lathe turning, drilling, milling and cutting after moulding. However, these processes cause such problems as sudden abrasion of the tools, heavy surface roughness and defective layer by crack and delamination. Therefore, the study to examine the conditions for the high precision products by minimising these problems is very important. In this study, a sample was made with a CFRP plate to take a drilling test under a set condition with a high speed steel drill. This dissertation is a study on the optimal drilling conditions of CFRP with various drilling condition. The drilling of these various specimens with different machining condition is performed.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"321"},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48909540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimisation of spin coating parameters for the preparation of ZnO thin films by Grey-Taguchi method Grey-Taguchi法制备ZnO薄膜的旋涂参数优化
International Journal of Nanomanufacturing Pub Date : 2017-07-17 DOI: 10.1504/IJNM.2017.10005580
A. Vivek, Akshay Chavan, B. Shivaraj, H. Murthy, M. Krishna, B. Sathyanarayana
{"title":"Optimisation of spin coating parameters for the preparation of ZnO thin films by Grey-Taguchi method","authors":"A. Vivek, Akshay Chavan, B. Shivaraj, H. Murthy, M. Krishna, B. Sathyanarayana","doi":"10.1504/IJNM.2017.10005580","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10005580","url":null,"abstract":"This work studies the influence of spin coating process parameters on grain size and surface roughness of zinc oxide (ZnO) thin films by sol gel using Taguchi method. ZnO thin films were prepared using zinc acetate dehydrate (ZAD), methanol and diethanolamine (DEA) as the starting material, solvent and stabilising agent respectively. The coating parameters such as precursor concentration of ZAD (0.5, 0.6 and 0.7 M), spin speed (1,500, 2,500 and 3,500 rpm) and annealing temperature (300,400 and 500 °c) was selected and the influence of these parameters on grain size and surface roughness was studied using X-ray diffraction (XRD) and atomic force microscopy (AFM). ANOVA results showed that annealing temperature had 53% effect on grain size and chuck rotation speed had 40% effect on the surface roughness of the film. Using Grey relation technique the optimised parameters was found to be 0.5 M, 2,500 rpm and 400°C. The grain size decreased from 18.054 nm to 16.97 nm and roughness of film decreased from 230.47 nm to 223.5 nm.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"197"},"PeriodicalIF":0.0,"publicationDate":"2017-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48681087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Influence of hydrogen on surface integrity and phase transformation of laser peened 316L stainless steel 氢对316L不锈钢激光喷丸表面完整性和相变的影响
International Journal of Nanomanufacturing Pub Date : 2017-07-17 DOI: 10.1504/IJNM.2017.10005594
Jianzhong Zhou, Zheng Yang, Shu Huang, J. Sheng, W. Tan
{"title":"Influence of hydrogen on surface integrity and phase transformation of laser peened 316L stainless steel","authors":"Jianzhong Zhou, Zheng Yang, Shu Huang, J. Sheng, W. Tan","doi":"10.1504/IJNM.2017.10005594","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10005594","url":null,"abstract":"To investigate the influence of hydrogen atoms on the surface integrity and the phase transformation of type 316L stainless steel after laser peening, specimens of laser peened 316L austenitic stainless steel were cathodic hydrogen charged. The surface residual stress of samples subjected to laser peening, the metallurgical structures and the microhardness were studied. The result shows that compressive residual stress is induced by laser peening. The compressive residual stress is 35.55 MPa, 46 MPa and 72 MPa, respectively, when the laser energy is 2 J, 5 J and 8 J. Meanwhile, laser peening refines the grain size, and the surface microhardness reveals that laser peening suppress the increase of microhardness caused by hydrogen atoms. Compared with unimpacted specimens, the amount of hydrogen attacked holes on impacted samples is decreased. The X-ray diffraction reveals that hydrogen charging is responsible for the martensite formed on the surface and the laser peening suppress the formation of martensite.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"257"},"PeriodicalIF":0.0,"publicationDate":"2017-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47049224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and development of microneedle array-based electrode for bio-potential measurement 基于微针阵列的生物电位测量电极的设计与开发
International Journal of Nanomanufacturing Pub Date : 2017-07-17 DOI: 10.1504/IJNM.2017.10005591
N. Balashanmugam, K. Naveen, P. Krishna, G. C. M. Kumar
{"title":"Design and development of microneedle array-based electrode for bio-potential measurement","authors":"N. Balashanmugam, K. Naveen, P. Krishna, G. C. M. Kumar","doi":"10.1504/IJNM.2017.10005591","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10005591","url":null,"abstract":"Conventional wet electrodes used in bio-potential measurement like EEG, ECG, etc., require the need for conductivity gel application on skin to wet the surface so that more contact area exist between skin and electrode resulting in better signal acquisition. Wet electrodes have certain drawbacks like the gel tends to underperform within one to two hours after application due to reasons like body heat. To overcome this drawbacks, dry electrodes are being developed which can be classified into two types; one penetrating skin and the other not. Both this type of electrodes has the advantages and limitations. The major drawback of filament type non-penetrating dry electrodes is that if the interest is in acquiring signals during motion, these electrodes tend to move relative to the skin resulting in noisy signal where as the microneedle can overcome this drawback by being continuously in contact with skin in all circumstances. In present work we have used micromachining technique to fabricate PMMA microneedle array. The study involves design of microneedle array, fabrication and mechanical testing of microneedles for skin insertion. It was found that for skin insertion upto 150 μm microneedles 7.5 N load was required and microneedles were structurally stable at this load.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"221"},"PeriodicalIF":0.0,"publicationDate":"2017-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41779335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the technological method of ultra-precision grinding for parabolic mirror of monocrystalline silicon 单晶硅抛物面镜超精密磨削工艺方法研究
International Journal of Nanomanufacturing Pub Date : 2017-07-17 DOI: 10.1504/IJNM.2017.10005599
Y. Niu, Yi-fan Dai
{"title":"Study on the technological method of ultra-precision grinding for parabolic mirror of monocrystalline silicon","authors":"Y. Niu, Yi-fan Dai","doi":"10.1504/IJNM.2017.10005599","DOIUrl":"https://doi.org/10.1504/IJNM.2017.10005599","url":null,"abstract":"Curved optics of monocrystalline silicon plays an important role in high power laser system and its form accuracy and subsurface damage (SSD) have a significant impact on the performance of the laser system. In order to improve grinding accuracy and control the depth of SSD, the ultra-precision grinding (UPG) process of Si is studied. Firstly, the grinding theory is introduced and the relationships among the depth of cutting, the depth of subsurface cracks and the load of single particle are analysed. Then the influence of different process parameters on the surface quality of Si was investigated by some process experiments. Based on the result of process experiments, the processing of a 195 mm-diameter parabolic mirror of Si was carried out. The results show that the form accuracy of peak-valley value is promoted up to 3.77 μm from 21.4 μm and Rms value of the roughness is improved up to 0.11 μm from 0.625 μm.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"13 1","pages":"283"},"PeriodicalIF":0.0,"publicationDate":"2017-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49347500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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