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Impact of spacers on the uniformity of a large-area field emission display 间隔片对大面积场发射显示器均匀性的影响
IVESC 2012 Pub Date : 2012-04-24 DOI: 10.1109/IVESC.2012.6264186
Zheng Hu, Zhuoya Zhu, W. Lei, Xiaobing Zhang, Huan Feng, Yajun Sun, L. Zheng
{"title":"Impact of spacers on the uniformity of a large-area field emission display","authors":"Zheng Hu, Zhuoya Zhu, W. Lei, Xiaobing Zhang, Huan Feng, Yajun Sun, L. Zheng","doi":"10.1109/IVESC.2012.6264186","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264186","url":null,"abstract":"Spacers are very important in field emission displays (FEDs), which can separate the cathode and the anode panel. We have investigated the impact of spacers on the field emission properties of a large-area FED. Simulation results showed that spacers would change the electric potential distribution inside FEDs, and would further affect the display uniformity. In FEDs with spacers of a low relative dielectric constant, the enhanced display uniformity can be achieved.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132243550","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
The effects and cost reduction with lower rhenium content in MoRe alloys 低铼对MoRe合金的影响及降低成本
IVESC 2012 Pub Date : 2012-04-24 DOI: 10.1109/IVESC.2012.6264205
L. Wolverton, T. Leonhardt
{"title":"The effects and cost reduction with lower rhenium content in MoRe alloys","authors":"L. Wolverton, T. Leonhardt","doi":"10.1109/IVESC.2012.6264205","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264205","url":null,"abstract":"The research objective was to investigate reducing the rhenium concentration in Mo-Re alloys which would allow Semicon Associates to decrease the raw material costs while enhancing the electrical properties of a dispenser cathode.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134333846","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
Implementation of high current density cathodes in high frequency RF sources 高频射频源中高电流密度阴极的实现
IVESC 2012 Pub Date : 2012-04-24 DOI: 10.1109/IVESC.2012.6264170
L. Ives, L. Falce, M. Read, G. Collins, Z. Pan, D. Marsden
{"title":"Implementation of high current density cathodes in high frequency RF sources","authors":"L. Ives, L. Falce, M. Read, G. Collins, Z. Pan, D. Marsden","doi":"10.1109/IVESC.2012.6264170","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264170","url":null,"abstract":"High current density cathodes are being developed for high frequency RF sources into the Terahertz regime. These cathodes allow significant reduction in cathode size, significantly improving performance and facilitating assembly of the RF device. High current density operation reduces, or eliminates, beam compression between the cathode and RF circuit. This is facilitating the development of a new generation of RF sources.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115554492","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 of tungstate formation in dispenser cathodes 分配器阴极中钨酸盐形成的研究
IVESC 2012 Pub Date : 2012-04-24 DOI: 10.1109/IVESC.2012.6264201
W. Tighe, R. Martín
{"title":"A study of tungstate formation in dispenser cathodes","authors":"W. Tighe, R. Martín","doi":"10.1109/IVESC.2012.6264201","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264201","url":null,"abstract":"L-3 Communications ETI has been involved in the manufacture of Vacuum Electron Devices (VEDs) for over 50 years. The cathode is a critical component of the VED and L-3 ETI has developed in-house facilities for the research, development, manufacture, and test of the Space TWT cathode [1, 2]. In addition to cathodes used in VEDs, the Electric Propulsion Product Line at L-3 ETI uses hollow dispenser cathodes. In this area as well, L-3 ETI has invested resources in research and test. The performance of the M-coated dispenser cathode over time depends primarily on the diffusion of the M-coat layer and the depletion of barium. For the hollow cathode, the depletion of barium is considered the primary life-limiting factor. The depletion of barium is dominated by evaporation but the chemical reactions that occur inside the dispenser pellet can produce barium tungstates that effectively prevent the barium from migrating to the surface. This presentation examines the role of barium tungstate formation on the life of the cathode.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122186004","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
Theoretical analysis for different PDP protective layer materials 不同PDP保护层材料的理论分析
IVESC 2012 Pub Date : 2012-04-24 DOI: 10.1109/IVESC.2012.6264192
Qiaofen Li, Y. Tu, Lanlan Yang, H. Tolner
{"title":"Theoretical analysis for different PDP protective layer materials","authors":"Qiaofen Li, Y. Tu, Lanlan Yang, H. Tolner","doi":"10.1109/IVESC.2012.6264192","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264192","url":null,"abstract":"Different protective layer materials used in plasma display panels (PDPs) have been explored. A high secondary electron emission yield is due to a low value of the combination of band gap and electron affinity. The materials such as MgO-Cs2O and MgO-CsI will be good candidates for protective layers.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123544846","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
Synthesis and characterization of high purity barium calcium aluminates for TWT impregnated cathodes 行波管浸渍阴极用高纯铝酸钡钙的合成与表征
IVESC 2012 Pub Date : 2012-04-24 DOI: 10.1109/IVESC.2012.6264172
F. F. Sene, V. O. Santos, C. Motta
{"title":"Synthesis and characterization of high purity barium calcium aluminates for TWT impregnated cathodes","authors":"F. F. Sene, V. O. Santos, C. Motta","doi":"10.1109/IVESC.2012.6264172","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264172","url":null,"abstract":"The synthesis of high purity barium calcium aluminate in oxidant atmosphere, without the pyrolysis step in hydrogen atmosphere, followed by the high energy ball milling to reduce the average particle size, was investigated to improve the impregnation process of the aluminate in porous tungsten matrices by induction heating.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"20 16","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131574184","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
Hafnium carbide thermal sources in O2, CO and CO2 environments 碳化铪在O2、CO和CO2环境中的热源
IVESC 2012 Pub Date : 2012-04-24 DOI: 10.1109/IVESC.2012.6264183
J. Lovell, W. Mackie, G. Magera
{"title":"Hafnium carbide thermal sources in O2, CO and CO2 environments","authors":"J. Lovell, W. Mackie, G. Magera","doi":"10.1109/IVESC.2012.6264183","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264183","url":null,"abstract":"We have tested thermionic cathodes using (210) and (310) oriented hafnium carbide. These have been operated in UHV, and pressures of oxygen, CO<sub>2</sub> and CO to 5 × 10<sup>-5</sup> Torr. Emission data show slight initial improvements due to work function lowering. Relatively stable operation at 1900 K in oxygen or CO<sub>2</sub> at 1 × 10<sup>-6</sup> Torr is reported.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"98 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120856958","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
Field emission display with printable planar triode 具有可打印平面三极管的场发射显示器
IVESC 2012 Pub Date : 2012-04-24 DOI: 10.1109/IVESC.2012.6264208
W. Lei, Xiaobing Zhang, Baoping Wang
{"title":"Field emission display with printable planar triode","authors":"W. Lei, Xiaobing Zhang, Baoping Wang","doi":"10.1109/IVESC.2012.6264208","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264208","url":null,"abstract":"The principle of field-emission display is almost the same as the traditional cathode ray tube, so it should display the image with the same quality as CRT. However, the triode structure and uniformity of field-emission is two key issues regarding the field-emission display. In this paper, a planar triode is discussed deeply. The structure of this planar triode is quite simple, and it can be fabricated cheaply with screen-printing method. A prototype has been made to verify the concept of the printable field-emission triode.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114925319","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
Correlation between single crystal LaB6 cathode optical and emission images 单晶LaB6阴极光学图像与发射图像的相关性
IVESC 2012 Pub Date : 2012-04-01 DOI: 10.1109/IVESC.2012.6264179
V. Katsap, Chising Lai
{"title":"Correlation between single crystal LaB6 cathode optical and emission images","authors":"V. Katsap, Chising Lai","doi":"10.1109/IVESC.2012.6264179","DOIUrl":"https://doi.org/10.1109/IVESC.2012.6264179","url":null,"abstract":"LaB6 cathode is the emitter of choice in electron beam lithography tools. In commercial LaB6 cathodes, the (100) crystalline plane is used as the emissive surface. Typical size of emitter is ~70 μm DIA. Quality control is usually done by observing (100) surface with a powerful microscope. Emission images of the same cathodes often reveal irregularities practically invisible or barely visible neither in optical microscope nor in SEM. We have obtained emission images of the LaB6 cathodes and compared them to optical and SEM images.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116351448","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
Cathode manufacturing: Relational data collection and process control system 阴极制造:相关数据收集和过程控制系统
IVESC 2012 Pub Date : 1900-01-01 DOI: 10.1109/ivelec.2008.4556548
M. Effgen, L. Wolverton
{"title":"Cathode manufacturing: Relational data collection and process control system","authors":"M. Effgen, L. Wolverton","doi":"10.1109/ivelec.2008.4556548","DOIUrl":"https://doi.org/10.1109/ivelec.2008.4556548","url":null,"abstract":"This paper will discuss in a novel approach for applying multi-layered relational database that permits the use of both purchased and customized reporting software for data collection and process monitoring for the purpose of establishing best practices for control of manufacturing.","PeriodicalId":249267,"journal":{"name":"IVESC 2012","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116167226","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
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