Pub Date : 2023-01-01DOI: 10.1504/ijnm.2023.10060119
Ming Wu, Qinwen Huang, Shaohua Yang, Tingting Liu, Bin Ruan, Weiheng Shao
{"title":"Study on the effect of self-heating effect of bulk acoustic wave filter on the interpolation loss in the band","authors":"Ming Wu, Qinwen Huang, Shaohua Yang, Tingting Liu, Bin Ruan, Weiheng Shao","doi":"10.1504/ijnm.2023.10060119","DOIUrl":"https://doi.org/10.1504/ijnm.2023.10060119","url":null,"abstract":"","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135262074","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}
Pub Date : 2021-02-17DOI: 10.1504/IJNM.2021.10035748
Lukman N. Abdulkadir, Khaled Abou El Hossein, M. Liman
Silicon is widely used in infrared (IR) optics due to its high transmissive ability at wavelength (λ) ranging from 1.2 μm to 6.0 μm. However, optical components of high quality require surface roughness (Ra) below or equal to 8 nm. Ultra-high precision single-point diamond turning of optical silicon has filled this gap due to enhanced chip removal, well-defined grain structure and low coefficient of friction of diamond tool. This study aimed at reducing optical silicon Ra value by manipulating both cutting parameters and tool geometry. The recommended Ra value of less than 8 nm was achieved with standard runs 5, 6, 8, 9, and 10 respectively. Also, high surface roughness due to high feed rate was noted to be greatly reduced at high tool negative rake angle and nose radius. Additionally, with increase in tool nose radius at 0° rake angle, poor surface quality resulting from high feed rate reduced.
{"title":"Influence of rake angle and nose radius on optical silicon nanomachining feed rate and surface quality: a modelling, prediction and optimisation study","authors":"Lukman N. Abdulkadir, Khaled Abou El Hossein, M. Liman","doi":"10.1504/IJNM.2021.10035748","DOIUrl":"https://doi.org/10.1504/IJNM.2021.10035748","url":null,"abstract":"Silicon is widely used in infrared (IR) optics due to its high transmissive ability at wavelength (λ) ranging from 1.2 μm to 6.0 μm. However, optical components of high quality require surface roughness (Ra) below or equal to 8 nm. Ultra-high precision single-point diamond turning of optical silicon has filled this gap due to enhanced chip removal, well-defined grain structure and low coefficient of friction of diamond tool. This study aimed at reducing optical silicon Ra value by manipulating both cutting parameters and tool geometry. The recommended Ra value of less than 8 nm was achieved with standard runs 5, 6, 8, 9, and 10 respectively. Also, high surface roughness due to high feed rate was noted to be greatly reduced at high tool negative rake angle and nose radius. Additionally, with increase in tool nose radius at 0° rake angle, poor surface quality resulting from high feed rate reduced.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44310472","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}
Pub Date : 2021-02-17DOI: 10.1504/IJNM.2021.10035746
Qingbo Yu, Huiqin Li, Kuan Yang, Qixiang Xu, Xianhua Li
Aromatic carbon (C) doped graphitic carbon nitride (g-C3N4) is one of the effective strategies to improve the photocatalytic performance of g-C3N4. The present work developed a feasible method to construct C/g-C3N4 through carbonising the mixture of g-C3N4 and phenol-formaldehyde (PF) obtained in situ polymerisation. This synthesis method not only improves the interaction between PF and g-C3N4, but also promotes the preparation of aromatic carbon-doped g-C3N4 in the subsequent calcinations process. The resulted C/g-C3N4-600 catalysts show developed optoelectronic properties, superior photocatalytic activity and higher surface area (1336 cm2 g-1) due to the extended π-conjugation system and distinctive morphology.
{"title":"Construction C/g-C3N4 with synergistic performance toward high photocatalytic performance","authors":"Qingbo Yu, Huiqin Li, Kuan Yang, Qixiang Xu, Xianhua Li","doi":"10.1504/IJNM.2021.10035746","DOIUrl":"https://doi.org/10.1504/IJNM.2021.10035746","url":null,"abstract":"Aromatic carbon (C) doped graphitic carbon nitride (g-C3N4) is one of the effective strategies to improve the photocatalytic performance of g-C3N4. The present work developed a feasible method to construct C/g-C3N4 through carbonising the mixture of g-C3N4 and phenol-formaldehyde (PF) obtained in situ polymerisation. This synthesis method not only improves the interaction between PF and g-C3N4, but also promotes the preparation of aromatic carbon-doped g-C3N4 in the subsequent calcinations process. The resulted C/g-C3N4-600 catalysts show developed optoelectronic properties, superior photocatalytic activity and higher surface area (1336 cm2 g-1) due to the extended π-conjugation system and distinctive morphology.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48896156","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}
Pub Date : 2021-02-17DOI: 10.1504/IJNM.2021.10035737
Dong Yinghuai, Song Jianbao, Li Guangyan, Wang Yan, Xue Wei
Electrical discharge machining (EDM) is a nontraditional machining method by using pulsed spark discharge between workpiece and electrode to melt and remove metal. The traditional power supply method uses carbon brush and slip ring. This contact type has power supply at the contact point. Problems such as carbon deposition, leakage, and easy generation of electric sparks restrict the improvement of the rotation speed of the electrode and pose a safety hazard. The non-contact power supply technology based on the principle of electromagnetic induction can effectively solve the above problems, which can provide conditions for high-speed rotation of the electrode. In order to improve the processing quality and efficiency, this study aimed to design a small ultrasonic vibration assisted EDM machine, which can effectively avoid spark concentration and abnormal arc generation.
{"title":"Research on non-contact ultrasonic vibration assisted rotating electrical discharge machining (EDM) machine tool","authors":"Dong Yinghuai, Song Jianbao, Li Guangyan, Wang Yan, Xue Wei","doi":"10.1504/IJNM.2021.10035737","DOIUrl":"https://doi.org/10.1504/IJNM.2021.10035737","url":null,"abstract":"Electrical discharge machining (EDM) is a nontraditional machining method by using pulsed spark discharge between workpiece and electrode to melt and remove metal. The traditional power supply method uses carbon brush and slip ring. This contact type has power supply at the contact point. Problems such as carbon deposition, leakage, and easy generation of electric sparks restrict the improvement of the rotation speed of the electrode and pose a safety hazard. The non-contact power supply technology based on the principle of electromagnetic induction can effectively solve the above problems, which can provide conditions for high-speed rotation of the electrode. In order to improve the processing quality and efficiency, this study aimed to design a small ultrasonic vibration assisted EDM machine, which can effectively avoid spark concentration and abnormal arc generation.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41398506","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}
Pub Date : 2020-04-07DOI: 10.1504/ijnm.2020.10028305
J. Xi, Bin Li, D. Ren, Zexiang Zhao, Huiying Zhao
Spindle vibration is a key factor influencing the quality of the processed surfaces during ultra-precision fly cutting. An extremely tiny vibration will directly influence the quality of the surface at the nanoscale. Therefore, in this study, a mathematical model of aerostatic spindle vibration under pulsed excitation was established by analysing the characteristic cutting path of a fly cutter head and the state of the spindle under interrupted cutting force and then, the axial and radial of the aerostatic spindle to pulses during periodically interrupted fly cutting were calculated using a Fourier series. Under the periodic processing mode of high-speed fly cutting, a simulation and experimental analysis on the spindle vibration were conducted. The experimental results show that the cutting force and spindle speed are major factors influencing surface roughness. According to the simulation and experimental analysis, reliable theoretical guidance is provided for the improvement and prediction of surface quality of an ultra-precision fly cutting.
{"title":"Study on the influence of spindle vibration on the surface roughness of ultra-precision fly cutting","authors":"J. Xi, Bin Li, D. Ren, Zexiang Zhao, Huiying Zhao","doi":"10.1504/ijnm.2020.10028305","DOIUrl":"https://doi.org/10.1504/ijnm.2020.10028305","url":null,"abstract":"Spindle vibration is a key factor influencing the quality of the processed surfaces during ultra-precision fly cutting. An extremely tiny vibration will directly influence the quality of the surface at the nanoscale. Therefore, in this study, a mathematical model of aerostatic spindle vibration under pulsed excitation was established by analysing the characteristic cutting path of a fly cutter head and the state of the spindle under interrupted cutting force and then, the axial and radial of the aerostatic spindle to pulses during periodically interrupted fly cutting were calculated using a Fourier series. Under the periodic processing mode of high-speed fly cutting, a simulation and experimental analysis on the spindle vibration were conducted. The experimental results show that the cutting force and spindle speed are major factors influencing surface roughness. According to the simulation and experimental analysis, reliable theoretical guidance is provided for the improvement and prediction of surface quality of an ultra-precision fly cutting.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47885739","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}
Pub Date : 2020-04-07DOI: 10.1504/ijnm.2020.10028296
R. Sayed, M. S. Elmasry, W. Hassan, Magda Y El-Mammli, A. Shalaby
Two novel and sensitive methods for quantitative determination of doxycycline hyclate and oxytetracycline HCl were developed. The first method (method A) is based on the reducing character of the cited drugs which causes chemical reduction of silver ions to silver nanoparticles (Ag-NPs) in the presence of polyvinyl pyrrolidone (PVP) as a stabilising agent producing surface plasmon resonance which has absorption peaks at 424 and 428 nm for doxycycline hyclate and oxytetracycline HCl, respectively. The nanoparticles were characterised by UV-VIS spectrophotometry and transmission electron microscopy (TEM). The plasmon absorbance of the Ag-NPs was used for the quantitative spectrophotometric determination of the cited drugs. The second method (method B) is a conductometric method which is based on the reaction of the cited drugs with phosphotungstic acid to form ion associates in aqueous system. Validation of the proposed methods was carried out.
{"title":"The use of surface plasmon resonance band of green silver nanoparticles and conductometry for quantitative determination of minor concentrations of doxycycline hyclate and oxytetracycline HCl in pure and pharmaceutical dosage forms","authors":"R. Sayed, M. S. Elmasry, W. Hassan, Magda Y El-Mammli, A. Shalaby","doi":"10.1504/ijnm.2020.10028296","DOIUrl":"https://doi.org/10.1504/ijnm.2020.10028296","url":null,"abstract":"Two novel and sensitive methods for quantitative determination of doxycycline hyclate and oxytetracycline HCl were developed. The first method (method A) is based on the reducing character of the cited drugs which causes chemical reduction of silver ions to silver nanoparticles (Ag-NPs) in the presence of polyvinyl pyrrolidone (PVP) as a stabilising agent producing surface plasmon resonance which has absorption peaks at 424 and 428 nm for doxycycline hyclate and oxytetracycline HCl, respectively. The nanoparticles were characterised by UV-VIS spectrophotometry and transmission electron microscopy (TEM). The plasmon absorbance of the Ag-NPs was used for the quantitative spectrophotometric determination of the cited drugs. The second method (method B) is a conductometric method which is based on the reaction of the cited drugs with phosphotungstic acid to form ion associates in aqueous system. Validation of the proposed methods was carried out.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41484930","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}
Pub Date : 2020-04-07DOI: 10.1504/ijnm.2020.10028301
Liu Jianfeng, Lin Sun, Changsheng Li, Xingyuan Long, Xudong Fang, Chen Zhaoxiang, Zhuangde Jiang
Aspheric optical components have been widely used recently because of their unique advantages. Thus, it is necessary to investigate processing technology of such aspheric parts. In this paper, an aspherical mirror is ground with cup wheel in five-axis computer numerical control (CNC) machine tool and corresponding processes were investigated. To improve machining efficiency and reduce tool wear, the workpiece is firstly ground to be a spherical mirror, and then it is ground to be the aspheric contour. The best fitting spherical mathematical equation is derived by the axisymmetric quadratic aspheric generatrix equation. A ∅90 mm aspheric mirror was ground with cup wheel with five-axis computer numerical control (CNC) machine tool. The aspheric curve is processed into a paraboloid shape. The experimental results show that the surface profile of the aspherical lens is consistent with the designed profile, and the peak value (PV) value of the error is 4.77μm. Such results can be accepted in consideration of working allowance for polishing. According to the experimental results, the cause of the error was analysed and methods for improving precision were proposed.
{"title":"Research on processing technology of grinding aspheric workpiece in the five-axis machine tool","authors":"Liu Jianfeng, Lin Sun, Changsheng Li, Xingyuan Long, Xudong Fang, Chen Zhaoxiang, Zhuangde Jiang","doi":"10.1504/ijnm.2020.10028301","DOIUrl":"https://doi.org/10.1504/ijnm.2020.10028301","url":null,"abstract":"Aspheric optical components have been widely used recently because of their unique advantages. Thus, it is necessary to investigate processing technology of such aspheric parts. In this paper, an aspherical mirror is ground with cup wheel in five-axis computer numerical control (CNC) machine tool and corresponding processes were investigated. To improve machining efficiency and reduce tool wear, the workpiece is firstly ground to be a spherical mirror, and then it is ground to be the aspheric contour. The best fitting spherical mathematical equation is derived by the axisymmetric quadratic aspheric generatrix equation. A ∅90 mm aspheric mirror was ground with cup wheel with five-axis computer numerical control (CNC) machine tool. The aspheric curve is processed into a paraboloid shape. The experimental results show that the surface profile of the aspherical lens is consistent with the designed profile, and the peak value (PV) value of the error is 4.77μm. Such results can be accepted in consideration of working allowance for polishing. According to the experimental results, the cause of the error was analysed and methods for improving precision were proposed.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46708549","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}
During the assembly of the engine casing, the coaxiality detection for the two assemblies are essential. And the modern manufacturing industry has put forward higher requirements for the coaxiality measurement with the development of the industrial technology. The existing coaxiality detection methods are mostly based on manual measurements. It takes long time to adjust the axes of assembly parts and turntable to coincide by the current measurement method, which greatly affects production efficiency. To solve the problem, this paper proposes a coaxiality detection method which can compensate assembly installation errors automatically. The coaxiality measurement method based on the position of the assembly is deduced by introducing the measurement mechanism of the coordinate measuring machine. The data processing uses coordinate transformation and least squares fitting method. Experimental verification shows that the method does not need to adjust the assembly part repeatedly, so measuring time is reduced greatly. The methods simplify the measurement steps and provide supports of methods and techniques for automatic detect.
{"title":"Coaxiality detection method with non-adjustment for installation errors","authors":"Jin Xin, Zhang Qiushuang, Shang Ke, Yimin Pu, Zhijing Zhang, Guo Huan","doi":"10.1504/ijnm.2020.10028306","DOIUrl":"https://doi.org/10.1504/ijnm.2020.10028306","url":null,"abstract":"During the assembly of the engine casing, the coaxiality detection for the two assemblies are essential. And the modern manufacturing industry has put forward higher requirements for the coaxiality measurement with the development of the industrial technology. The existing coaxiality detection methods are mostly based on manual measurements. It takes long time to adjust the axes of assembly parts and turntable to coincide by the current measurement method, which greatly affects production efficiency. To solve the problem, this paper proposes a coaxiality detection method which can compensate assembly installation errors automatically. The coaxiality measurement method based on the position of the assembly is deduced by introducing the measurement mechanism of the coordinate measuring machine. The data processing uses coordinate transformation and least squares fitting method. Experimental verification shows that the method does not need to adjust the assembly part repeatedly, so measuring time is reduced greatly. The methods simplify the measurement steps and provide supports of methods and techniques for automatic detect.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"116 31","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141216257","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}
Pub Date : 2020-03-09DOI: 10.1504/ijnm.2020.10027474
X. Xu, Zhiying Sun, Z. Fan
The purpose of functionality check is to analyse the stack-up of geometric deviation of part/feature whether it meets geometrical requirement and is it in the range of assembly tolerance. However, usual tolerance analysis model does not include assembly clearance. Aiming at this problem, we have done some research. Firstly, a nominal geometrical transfer model and a stackup model are established based on small displacement torsor (SDT) and homogeneous transformation matrix (HTM). Secondly, HTM expression of tolerance loop is constructed. Next, assembly tolerance matrix model is established and a new tolerance analysis method for assembling feasibility check is put forward. At last, taking a slider-crank mechanism as example, the contrastive study of tolerance analysis for functionality check is done. The results show that it is prone to lead to misjudge when analysing only dimension tolerance. And, it is more restrictively when considering dimension tolerance, geometric tolerance and assembly clearance.
{"title":"Tolerance analysis of slider-crank mechanism for assembly functionality check","authors":"X. Xu, Zhiying Sun, Z. Fan","doi":"10.1504/ijnm.2020.10027474","DOIUrl":"https://doi.org/10.1504/ijnm.2020.10027474","url":null,"abstract":"The purpose of functionality check is to analyse the stack-up of geometric deviation of part/feature whether it meets geometrical requirement and is it in the range of assembly tolerance. However, usual tolerance analysis model does not include assembly clearance. Aiming at this problem, we have done some research. Firstly, a nominal geometrical transfer model and a stackup model are established based on small displacement torsor (SDT) and homogeneous transformation matrix (HTM). Secondly, HTM expression of tolerance loop is constructed. Next, assembly tolerance matrix model is established and a new tolerance analysis method for assembling feasibility check is put forward. At last, taking a slider-crank mechanism as example, the contrastive study of tolerance analysis for functionality check is done. The results show that it is prone to lead to misjudge when analysing only dimension tolerance. And, it is more restrictively when considering dimension tolerance, geometric tolerance and assembly clearance.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46166449","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}
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