Pub Date : 2013-05-02DOI: 10.1109/IBCAST.2013.6512137
Zhihua Wang, H. Fu, Yongbo Zhang
Degradation test is a feasible means to assess the failure time distributions of complex systems and highly reliable products. Generally speaking, the degradation process is essentially a continuous state random process. Motivated by the independent increment process theory, we propose a degradation analysis model, in which degradation is represented by an independent increment process with linear mean and standard deviation functions (quadratic variance function). A one-stage method is further developed to estimate the model parameters and failure time distribution. The methodology has been implemented in the analysis of GaAs laser degradation. The comparative results illustrate that the proposed method can be considered good and show a promise for future applications.
{"title":"Linear independent increment process with linear standard deviation function for degradation analysis","authors":"Zhihua Wang, H. Fu, Yongbo Zhang","doi":"10.1109/IBCAST.2013.6512137","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512137","url":null,"abstract":"Degradation test is a feasible means to assess the failure time distributions of complex systems and highly reliable products. Generally speaking, the degradation process is essentially a continuous state random process. Motivated by the independent increment process theory, we propose a degradation analysis model, in which degradation is represented by an independent increment process with linear mean and standard deviation functions (quadratic variance function). A one-stage method is further developed to estimate the model parameters and failure time distribution. The methodology has been implemented in the analysis of GaAs laser degradation. The comparative results illustrate that the proposed method can be considered good and show a promise for future applications.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114316614","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512199
M. S. Anwar, N. Ahsan, M. Shan
This paper presents an L-band non binary six port (1×5) power splitter/combiner utilizing stripline architecture. The detailed design, its implementation and testing is the main focus of this paper. The circuit optimization has been carried out utilizing ADS®. The paper also provides the comparison of simulation and measured results. The measured results indicate that the splitter/combiner has an amplitude balance of ± 0.8 dB with a frequency BW of 500MHz in L-band. Both Input and output VSWR is less than 1.55 while the worst case insertion loss is 0.36 dB. All these results make this combiner/splitter very useful for solid state amplifiers for radar applications.
{"title":"Design and development of a high power 1×5 splitter/combiner for solid state radar transmitters","authors":"M. S. Anwar, N. Ahsan, M. Shan","doi":"10.1109/IBCAST.2013.6512199","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512199","url":null,"abstract":"This paper presents an L-band non binary six port (1×5) power splitter/combiner utilizing stripline architecture. The detailed design, its implementation and testing is the main focus of this paper. The circuit optimization has been carried out utilizing ADS®. The paper also provides the comparison of simulation and measured results. The measured results indicate that the splitter/combiner has an amplitude balance of ± 0.8 dB with a frequency BW of 500MHz in L-band. Both Input and output VSWR is less than 1.55 while the worst case insertion loss is 0.36 dB. All these results make this combiner/splitter very useful for solid state amplifiers for radar applications.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"867 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127162398","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512128
I. Yousafa, S. Alib, S. Mirzac
Physical properties of rubber composites can be enhanced by employing the particulate fillers for example calcium carbonate, silica and carbon black. Modulus, tear & abrasion resistance usually have a tendency to increase by the incorporation of the fillers in elastomers. Particulate fillers like high-structured silica and carbon black, generally, offered considerable reinforcing effects. The key purpose of this paper is to study the impact of filler (Vulkasil C, precipitated silica) dosages/loading on the mechanical properties of interest for instance hardness, elongation at break, tensile strength and bound rubber of EPDM based rubber vulcanizates.
{"title":"Ethylene-propylene-diene terpolymer vulcanizates' reinforcement with precipitated silica","authors":"I. Yousafa, S. Alib, S. Mirzac","doi":"10.1109/IBCAST.2013.6512128","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512128","url":null,"abstract":"Physical properties of rubber composites can be enhanced by employing the particulate fillers for example calcium carbonate, silica and carbon black. Modulus, tear & abrasion resistance usually have a tendency to increase by the incorporation of the fillers in elastomers. Particulate fillers like high-structured silica and carbon black, generally, offered considerable reinforcing effects. The key purpose of this paper is to study the impact of filler (Vulkasil C, precipitated silica) dosages/loading on the mechanical properties of interest for instance hardness, elongation at break, tensile strength and bound rubber of EPDM based rubber vulcanizates.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132411620","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512190
S. Z. Farooq, A. Ghafoor
This paper analyzes the multiband sensing-time-adaptive joint detection cognitive radios framework. The framework optimizes secondary throughput while minimizing the interference to a wideband multiband primary communications system. The ranges are determined under which the problem can be categorized as a complex optimization one under real Gaussian channel conditions. Simulated results compare the performance of MSJD framework with the earlier proposed multiband joint detection (MJD) framework for some typical primary signals received in real Gaussian and Circularly Symmetric Complex Gaussian channels.
{"title":"Multiband sensing-time-adaptive joint detection cognitive radios framework for Gaussian channels","authors":"S. Z. Farooq, A. Ghafoor","doi":"10.1109/IBCAST.2013.6512190","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512190","url":null,"abstract":"This paper analyzes the multiband sensing-time-adaptive joint detection cognitive radios framework. The framework optimizes secondary throughput while minimizing the interference to a wideband multiband primary communications system. The ranges are determined under which the problem can be categorized as a complex optimization one under real Gaussian channel conditions. Simulated results compare the performance of MSJD framework with the earlier proposed multiband joint detection (MJD) framework for some typical primary signals received in real Gaussian and Circularly Symmetric Complex Gaussian channels.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116730786","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512123
Xiaojun Wang, Xiujuan Lu, Bo Xu, Jiping Liu
Pure PPS was modified by nano-SiO2, and mixed with SBS, PPA auxiliaries and smoke suppression agent. The compound materials were tested on dispersion homogeneity of nano-SiO2, water absorption, mechanics function, TEM and thermal properties. It discovered that the nano-SiO2 was homogeneous in PPS and it could decrease the water absorption rate and the temperature coefficient of expansion and improve the mechanical and thermal properties, as well as the performance life. The composite materials really satisfy the strict index demands of electron packing materials.
{"title":"Preparation and characteristic research on composites of polyphenylene sulfide modified by nano-silicon dioxide","authors":"Xiaojun Wang, Xiujuan Lu, Bo Xu, Jiping Liu","doi":"10.1109/IBCAST.2013.6512123","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512123","url":null,"abstract":"Pure PPS was modified by nano-SiO2, and mixed with SBS, PPA auxiliaries and smoke suppression agent. The compound materials were tested on dispersion homogeneity of nano-SiO2, water absorption, mechanics function, TEM and thermal properties. It discovered that the nano-SiO2 was homogeneous in PPS and it could decrease the water absorption rate and the temperature coefficient of expansion and improve the mechanical and thermal properties, as well as the performance life. The composite materials really satisfy the strict index demands of electron packing materials.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121866604","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512178
M. Latif, A. U. Salfi, M. Shafique
The paper describes the design and full-wave EM simulation of Ku-band (10.7-14.5) GHz orthomode transducer (OMT). The OMT designed is class 2 (symmetric OMT) which has higher fractional bandwidth and cross-polarization isolation than the class 1 OMT. It is realized with Modified Bfifot junction where the tuning pins are replaced with well placed capacitive steps. Moreover septum is four times thicker than conventional class 2 OMT, making it realizable up to 1 THz frequency. Cross-polarization isolation ≥ 80 dB and return loss ≥ 20 dB are achieved in the entire band. Effect of manufacturing tolerances and assembly misalignment are incorporated d the full-wave EM simulation. All the simulation & optimization work is done in industry standard EM Simulation software.
{"title":"Design & full-wave EM simulation of Ku-band orthomode transducer (OMT)","authors":"M. Latif, A. U. Salfi, M. Shafique","doi":"10.1109/IBCAST.2013.6512178","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512178","url":null,"abstract":"The paper describes the design and full-wave EM simulation of Ku-band (10.7-14.5) GHz orthomode transducer (OMT). The OMT designed is class 2 (symmetric OMT) which has higher fractional bandwidth and cross-polarization isolation than the class 1 OMT. It is realized with Modified Bfifot junction where the tuning pins are replaced with well placed capacitive steps. Moreover septum is four times thicker than conventional class 2 OMT, making it realizable up to 1 THz frequency. Cross-polarization isolation ≥ 80 dB and return loss ≥ 20 dB are achieved in the entire band. Effect of manufacturing tolerances and assembly misalignment are incorporated d the full-wave EM simulation. All the simulation & optimization work is done in industry standard EM Simulation software.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127995168","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512158
M. Ozair, M. N. Qureshi
It has been broadly reported in the literature that the large segmented solid rocket motors (SRMs), such as Ariane 5 solid booster (P230) and Space Shuttle RSRM (Re-designed SRM), experience undesirable pressure oscillations that lead to thrust oscillations during combustion due to a complex coupling between the combustion and the internal aerodynamics of the combustion chamber. These fluctuations adversely affect the rocket motor performance, could damage the payload and eventually cause mission failure. To investigate these instabilities, experiments on full-size motors are very expensive, complicated and time consuming, and are therefore not really suited for research. In this paper, LP6 motor, the 1/15- scale axisymmetric model of the Ariane 5 booster, is used to study the pressure oscillations and the vortex-shedding induced pressure instabilities. Computational Fluid Dynamics (CFD) simulations were carried out on a quadrilateral mesh of the LP6 geometry at the time of 6.4 s after ignition when the pressure oscillations were found to be almost peaked. Pressure oscillation frequencies and amplitudes obtained from CFD simulations are found to be in good agreement with experimental results obtained at ONERA (French National Aerospace Research Centre). From CFD simulations, it was also found that the potential source of instabilities and pressure oscillations in LP6 motor having no inhibitor rings or restrictors is the surface vortex shedding mechanism which is a phenomenon that has also been observed in the experiments. On the basis of the present study and results, CFD simulations can also be carried out for different geometric configurations and flow conditions in other SRMs to investigate the instabilities and pressure oscillations occurring in their combustion chambers.
{"title":"Numerical simulation of pressure oscillations and instabilities in a solid propellant subscale motor","authors":"M. Ozair, M. N. Qureshi","doi":"10.1109/IBCAST.2013.6512158","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512158","url":null,"abstract":"It has been broadly reported in the literature that the large segmented solid rocket motors (SRMs), such as Ariane 5 solid booster (P230) and Space Shuttle RSRM (Re-designed SRM), experience undesirable pressure oscillations that lead to thrust oscillations during combustion due to a complex coupling between the combustion and the internal aerodynamics of the combustion chamber. These fluctuations adversely affect the rocket motor performance, could damage the payload and eventually cause mission failure. To investigate these instabilities, experiments on full-size motors are very expensive, complicated and time consuming, and are therefore not really suited for research. In this paper, LP6 motor, the 1/15- scale axisymmetric model of the Ariane 5 booster, is used to study the pressure oscillations and the vortex-shedding induced pressure instabilities. Computational Fluid Dynamics (CFD) simulations were carried out on a quadrilateral mesh of the LP6 geometry at the time of 6.4 s after ignition when the pressure oscillations were found to be almost peaked. Pressure oscillation frequencies and amplitudes obtained from CFD simulations are found to be in good agreement with experimental results obtained at ONERA (French National Aerospace Research Centre). From CFD simulations, it was also found that the potential source of instabilities and pressure oscillations in LP6 motor having no inhibitor rings or restrictors is the surface vortex shedding mechanism which is a phenomenon that has also been observed in the experiments. On the basis of the present study and results, CFD simulations can also be carried out for different geometric configurations and flow conditions in other SRMs to investigate the instabilities and pressure oscillations occurring in their combustion chambers.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"5 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132340240","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512160
M. Arshad, I. R. Chughtai, M. H. Inayat, A. Haq
Rectangular shaped sieve plate column was installed for study of transport parameters through high speed photography and image analysis. Two Immiscible liquids consisting of the dispersed phase (water) and continuous phase (kerosene oil) were introduced in countercurrent operation. Experiments were performed for dispersed and continuous phase superficial velocities 0.16-0.44 cm/sec and 0.37-0.47 cm/sec respectively, pulsation frequency 0.95 -1.72 rev/sec and pulsation amplitude 1cm. Upon increasing the superficial velocity of dispersed phase, its void fraction increases up to its asymptotic value and droplet velocity increase while the droplet size decreases. Upon increasing the pulsation frequency, its void fraction increases while the droplet size and droplet velocity decreases. A Computational Multi Fluid Dynamics simulation has been carried out in order to verify the experimental results using the FLUENT. The CMFD calculations for void fraction have been compared with the experimental results which have shown a maximum deviation of 2-3%.
{"title":"Experimental study and CMFD modeling of transport processes in flow of two Immiscible liquids","authors":"M. Arshad, I. R. Chughtai, M. H. Inayat, A. Haq","doi":"10.1109/IBCAST.2013.6512160","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512160","url":null,"abstract":"Rectangular shaped sieve plate column was installed for study of transport parameters through high speed photography and image analysis. Two Immiscible liquids consisting of the dispersed phase (water) and continuous phase (kerosene oil) were introduced in countercurrent operation. Experiments were performed for dispersed and continuous phase superficial velocities 0.16-0.44 cm/sec and 0.37-0.47 cm/sec respectively, pulsation frequency 0.95 -1.72 rev/sec and pulsation amplitude 1cm. Upon increasing the superficial velocity of dispersed phase, its void fraction increases up to its asymptotic value and droplet velocity increase while the droplet size decreases. Upon increasing the pulsation frequency, its void fraction increases while the droplet size and droplet velocity decreases. A Computational Multi Fluid Dynamics simulation has been carried out in order to verify the experimental results using the FLUENT. The CMFD calculations for void fraction have been compared with the experimental results which have shown a maximum deviation of 2-3%.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134430423","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512125
T. Rasheed, S. Akbar, S. Mirza
This paper presents method for the characterization of composite tubes produced by filament winding technique. The aim of this study is to investigate the mechanical properties by tensile test and under internal pressure loads. For this purpose specimens produced with different orientation having the same reinforcement with two different matrix systems. Data produced experimentally by measuring the mechanical properties like longitudinal tensile and hoop tensile properties, strain in hoop direction and maximum hoop stresses during the hydraulic testing. In order to investigate these parameters, internal pressure tests are done on the filament-wound composite tubes having internal diameter 64.5± 0.5 mm and length 320± 2.0 mm according to ASTM D 1599-99 standard. The tubes for the testing are manufactured by wet filament winding methods of [± 60°] E-glass/Epoxy of various wall thicknesses. Hydraulic tests revealed that the tubes with winding orientation [± 60°]2[±90°]2 exhibits better burst performance compared with others orientations. In addition, factors affecting the behavior of the tubes like buckling, stress variation through wall thickness are discussed.
本文介绍了长丝缠绕复合材料管的表征方法。本研究的目的是通过拉伸试验和内压载荷来研究其力学性能。为此，用两种不同的基体体系制作具有不同取向、相同配筋的试样。通过测量水力测试期间的纵向拉伸和环向拉伸性能、环向应变和最大环向应力等力学性能的实验数据。根据ASTM D 1599-99标准，对内径64.5±0.5 mm、长度320±2.0 mm的丝绕复合材料管进行了内压试验。用于测试的管是用不同壁厚的[±60°]e -玻璃/环氧树脂湿长丝缠绕法制造的。水力试验结果表明，缠绕方向为[±60°]2[±90°]2的管具有较好的爆破性能。此外，还讨论了影响管的屈曲、应力随壁厚变化等因素。
{"title":"Experimental investigation of filament-wound composite tubes for mechanical characterization by internal pressure testing","authors":"T. Rasheed, S. Akbar, S. Mirza","doi":"10.1109/IBCAST.2013.6512125","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512125","url":null,"abstract":"This paper presents method for the characterization of composite tubes produced by filament winding technique. The aim of this study is to investigate the mechanical properties by tensile test and under internal pressure loads. For this purpose specimens produced with different orientation having the same reinforcement with two different matrix systems. Data produced experimentally by measuring the mechanical properties like longitudinal tensile and hoop tensile properties, strain in hoop direction and maximum hoop stresses during the hydraulic testing. In order to investigate these parameters, internal pressure tests are done on the filament-wound composite tubes having internal diameter 64.5± 0.5 mm and length 320± 2.0 mm according to ASTM D 1599-99 standard. The tubes for the testing are manufactured by wet filament winding methods of [± 60°] E-glass/Epoxy of various wall thicknesses. Hydraulic tests revealed that the tubes with winding orientation [± 60°]2[±90°]2 exhibits better burst performance compared with others orientations. In addition, factors affecting the behavior of the tubes like buckling, stress variation through wall thickness are discussed.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133694427","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 : 2013-05-02DOI: 10.1109/IBCAST.2013.6512127
S. N. Malik, H. Ahmed, M. Shahid, N. Haider, M. Malik, P. O’Brien
Mx(iPr2PSe2)y] complexes (M = In, Cu) were synthesized by metathesis reaction of metal with ligand salt [HNEt3][iPr2PSe2]. These complexes undergo thermolysis in HDA/TOP at 200-270 °C, to yield monophasic Cu2-xSe and In2Se3 nanoparticles. Cu2-xSe nanoparticles (grown at 250 °C) and In2Se3 nanoparticles (grown at 270 °C) had a mean diameter of 5.0 ± 1.2 nm and 13 ± 2.5 nm, respectively.
采用金属与配体盐[HNEt3][iPr2PSe2]的复分解反应合成了Mx(iPr2PSe2)y]配合物(M = In, Cu)。这些配合物在200-270°C的HDA/TOP中进行热裂解，得到单相Cu2-xSe和In2Se3纳米颗粒。在250℃下生长的Cu2-xSe纳米粒子和在270℃下生长的In2Se3纳米粒子的平均直径分别为5.0±1.2 nm和13±2.5 nm。
{"title":"Colloidal preparation of copper selenide and indium selenide nanoparticles by single source precursors approach","authors":"S. N. Malik, H. Ahmed, M. Shahid, N. Haider, M. Malik, P. O’Brien","doi":"10.1109/IBCAST.2013.6512127","DOIUrl":"https://doi.org/10.1109/IBCAST.2013.6512127","url":null,"abstract":"M<sub>x</sub>(<sup>i</sup>Pr<sub>2</sub>PSe<sub>2</sub>)<sub>y</sub>] complexes (M = In, Cu) were synthesized by metathesis reaction of metal with ligand salt [HNEt<sub>3</sub>][<sup>i</sup>Pr<sub>2</sub>PSe<sub>2</sub>]. These complexes undergo thermolysis in HDA/TOP at 200-270 °C, to yield monophasic Cu<sub>2-x</sub>Se and In<sub>2</sub>Se<sub>3</sub> nanoparticles. Cu<sub>2-x</sub>Se nanoparticles (grown at 250 °C) and In<sub>2</sub>Se<sub>3</sub> nanoparticles (grown at 270 °C) had a mean diameter of 5.0 ± 1.2 nm and 13 ± 2.5 nm, respectively.","PeriodicalId":276834,"journal":{"name":"Proceedings of 2013 10th International Bhurban Conference on Applied Sciences & Technology (IBCAST)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114668648","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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