Pub Date : 2021-10-22DOI: 10.1109/peam.2011.6135121
I. Murray
{"title":"Front and back cover","authors":"I. Murray","doi":"10.1109/peam.2011.6135121","DOIUrl":"https://doi.org/10.1109/peam.2011.6135121","url":null,"abstract":"","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117132606","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155847
M. Ramiączek-Krasowska, A. Szyszka, R. Paszkiewicz, J. Lukes
In the paper the results of nanoscratching of gold metal layer deposited on resist made with application of a nanoindenter are presented. Also in the paper the properties of nanoscratching as nanotool are presented. The authors showed what problems exists in application of nanoindenters as systems used for nanoscratching lithography.
{"title":"Application nanoindenter as nanolithography tool","authors":"M. Ramiączek-Krasowska, A. Szyszka, R. Paszkiewicz, J. Lukes","doi":"10.1109/STYSW.2011.6155847","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155847","url":null,"abstract":"In the paper the results of nanoscratching of gold metal layer deposited on resist made with application of a nanoindenter are presented. Also in the paper the properties of nanoscratching as nanotool are presented. The authors showed what problems exists in application of nanoindenters as systems used for nanoscratching lithography.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"310 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124408709","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155845
P. Karstadt, A. Gupta
One method to measure the radiation efficiency of an antenna is the Wheeler Cap method. It uses a wave guide, operated below his cut off frequency to eliminate the far field of the antenna. Using two measurements (with and without Wheeler Cap) it is possible to calculate the radiation efficiency. In this paper the impact of different shapes, material and the minimum heights of the Wheeler Cap are investigated. The measurement of radiation efficiency is not precise but the ease of measurement makes the method highly attractive. This contribution concludes that the shape and the material have no influence to the measured radiation efficiency as long as the design criterion like cap size are kept constant.
{"title":"Radiation efficiency measurement of communication antennas with Wheeler Cap method","authors":"P. Karstadt, A. Gupta","doi":"10.1109/STYSW.2011.6155845","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155845","url":null,"abstract":"One method to measure the radiation efficiency of an antenna is the Wheeler Cap method. It uses a wave guide, operated below his cut off frequency to eliminate the far field of the antenna. Using two measurements (with and without Wheeler Cap) it is possible to calculate the radiation efficiency. In this paper the impact of different shapes, material and the minimum heights of the Wheeler Cap are investigated. The measurement of radiation efficiency is not precise but the ease of measurement makes the method highly attractive. This contribution concludes that the shape and the material have no influence to the measured radiation efficiency as long as the design criterion like cap size are kept constant.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122526108","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155862
D. Wojcieszak, D. Kaczmarek, J. Domaradzki, Pietro Cremmellaro
In this work photocatalytic activity of transparent TiO2 coatings doped with Tb was described. Thin films were performed by high energy reactive magnetron sputtering process. During deposition, particles were sputtered from metallic Ti and Ti-Tb targets in oxygen reactive plasma. The properties of thin films were characterized by several methods. Influence of Tb-dopant on the structure and diversification of the surface was investigated by X-ray Diffraction and Atomic Force Microscopy, respectively. Optical properties of manufactured films, especially transparency level and adsorption edge, were determined based on optical transmission measurements. Photocatalytic activity of TiO2:Tb thin films was determined based on phenol decomposition reactions under UV-Vis light exposure. The rate of phenol decomposition was determined based on absorption measurements. The results have shown that all manufactured films were nanocrystalline and photocatalytically active. Doping with terbium meaningfully increased the activity of as-deposited films. In this paper dependences between structure type of the TiO2-matrix, crystallites size, roughness of the thin film surface and photocatalytic activity of TiO2:Tb thin films are described. Especially, the key-role of terbium on properties of TiO2 matrix is discussed.
{"title":"Self-cleaning properties of nanocrystalline TiO2 thin films doped with terbium","authors":"D. Wojcieszak, D. Kaczmarek, J. Domaradzki, Pietro Cremmellaro","doi":"10.1109/STYSW.2011.6155862","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155862","url":null,"abstract":"In this work photocatalytic activity of transparent TiO2 coatings doped with Tb was described. Thin films were performed by high energy reactive magnetron sputtering process. During deposition, particles were sputtered from metallic Ti and Ti-Tb targets in oxygen reactive plasma. The properties of thin films were characterized by several methods. Influence of Tb-dopant on the structure and diversification of the surface was investigated by X-ray Diffraction and Atomic Force Microscopy, respectively. Optical properties of manufactured films, especially transparency level and adsorption edge, were determined based on optical transmission measurements. Photocatalytic activity of TiO2:Tb thin films was determined based on phenol decomposition reactions under UV-Vis light exposure. The rate of phenol decomposition was determined based on absorption measurements. The results have shown that all manufactured films were nanocrystalline and photocatalytically active. Doping with terbium meaningfully increased the activity of as-deposited films. In this paper dependences between structure type of the TiO2-matrix, crystallites size, roughness of the thin film surface and photocatalytic activity of TiO2:Tb thin films are described. Especially, the key-role of terbium on properties of TiO2 matrix is discussed.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116441119","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155848
M. Ramiączek-Krasowska, A. Szyszka, J. Prażmowska, R. Paszkiewicz
In the paper the lithography methods are presented. Also a lithography with use AFM systems is summarized. In the work the reconstruction of the pattern created by nanoscratching and lift-off technique is show and discussed. The resolution of created structures for certain parameters of nanoscratching was also defined. Obtained resolution of reconstructed pattern was about 120 nm what was comparable with the thickness of gold masking layer.
{"title":"Atomic force microscopy for low dimensional metal strips creation and measurements","authors":"M. Ramiączek-Krasowska, A. Szyszka, J. Prażmowska, R. Paszkiewicz","doi":"10.1109/STYSW.2011.6155848","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155848","url":null,"abstract":"In the paper the lithography methods are presented. Also a lithography with use AFM systems is summarized. In the work the reconstruction of the pattern created by nanoscratching and lift-off technique is show and discussed. The resolution of created structures for certain parameters of nanoscratching was also defined. Obtained resolution of reconstructed pattern was about 120 nm what was comparable with the thickness of gold masking layer.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125748632","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155842
R. Herschel, C. Schaffer
Over the last decade a tendency towards increasing demand for broadband wireless services is one of the driving factors for research and development. In order to connect the installed fiber optic backbone with remote wireless base stations at those frequencies full optical access networks are expected to play a key role for future system architectures. This Radio-over-Fiber-Systems combining optical and wireless access are one of the most dynamic topics in current research on broadband communications. The paper will introduce into the field of Radio over Fiber systems, analysing the underlying principles on system level. The main problems arising from the characteristic of the fiber-optic link are evaluated in terms of their effect on the system performance. Finally different system architectures will be presented in order to provide an introduction into Radio-over-Fiber-Systems as technology for next generation wireless access.
{"title":"Radio-over-fiber systems for next generation wireless access","authors":"R. Herschel, C. Schaffer","doi":"10.1109/STYSW.2011.6155842","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155842","url":null,"abstract":"Over the last decade a tendency towards increasing demand for broadband wireless services is one of the driving factors for research and development. In order to connect the installed fiber optic backbone with remote wireless base stations at those frequencies full optical access networks are expected to play a key role for future system architectures. This Radio-over-Fiber-Systems combining optical and wireless access are one of the most dynamic topics in current research on broadband communications. The paper will introduce into the field of Radio over Fiber systems, analysing the underlying principles on system level. The main problems arising from the characteristic of the fiber-optic link are evaluated in terms of their effect on the system performance. Finally different system architectures will be presented in order to provide an introduction into Radio-over-Fiber-Systems as technology for next generation wireless access.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128935551","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155859
A. Stafiniak, B. Boratyński
In the presented work, a review of electrospun ZnO nanofibers in sensor applications are shown. Devices sensed on harmful substances such as: toxic and combustible gases or volatile organic compounds vapours are included. Various constructions of sensors and methods of their fabrication are compared. Sensing properties of semiconducting metal oxides 1D structures have also been discussed. Technological issues of fabricated devices with electrospun ZnO nanofibers using a standard microelectronic technology especially photolithography and lift-off process was shown. Solutions of the process technology improvement using protective layer will also be presented.
{"title":"Electrospun ZnO nanofibers for sensors application","authors":"A. Stafiniak, B. Boratyński","doi":"10.1109/STYSW.2011.6155859","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155859","url":null,"abstract":"In the presented work, a review of electrospun ZnO nanofibers in sensor applications are shown. Devices sensed on harmful substances such as: toxic and combustible gases or volatile organic compounds vapours are included. Various constructions of sensors and methods of their fabrication are compared. Sensing properties of semiconducting metal oxides 1D structures have also been discussed. Technological issues of fabricated devices with electrospun ZnO nanofibers using a standard microelectronic technology especially photolithography and lift-off process was shown. Solutions of the process technology improvement using protective layer will also be presented.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"308 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131669501","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155840
Stefanie Haupt, M. Haupt, U. Fischer
Polymer optical fibers (POFs) are having an increasing role in short range optical communication systems. Home networks present a very interesting application sector due to numerous advantages of POFs over traditional communication mediums.
{"title":"WDM over POF ¿ A way to increase transmission capacity of POF","authors":"Stefanie Haupt, M. Haupt, U. Fischer","doi":"10.1109/STYSW.2011.6155840","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155840","url":null,"abstract":"Polymer optical fibers (POFs) are having an increasing role in short range optical communication systems. Home networks present a very interesting application sector due to numerous advantages of POFs over traditional communication mediums.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122420619","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155837
A. Geisler, R. Herschel, A. Gupta, C. Schaffer
To provide the requested high band-widths for modern communications the combination of optical and wireless links in Radio-over-Fiber systems (RoF), is expected to be an essential part of next generation wireless communication systems. A crucial part of these links is the broadband optical receiver transforming the signal from high optical to millimeter-wave frequencies at each base station. A new integrated optical receiver chip with an integrated antenna structure supporting more than 100GHz bandwidth is available. To be compatible to standard millimeter-wave components based on hollow metal waveguide structures an efficient coupling solution from the chip to waveguide has to be designed. For the performance of this element the impedance matching to the integrated photo diode is the dominating task. Therefore models of the chip structure with different complexity and computational effort were created and numerically simulated using the Method of Moments and compared with analytical models and empirical results. Since the computational effort of the whole structure is high, it is of interest to what detail the structure has to be modeled for an efficient design process of a coupling solution to a hollow metal waveguide. Radiation patterns of the models are investigated in order to determine a suitable coupling direction.
{"title":"Method of moment based analysis of a broadband optical receiver","authors":"A. Geisler, R. Herschel, A. Gupta, C. Schaffer","doi":"10.1109/STYSW.2011.6155837","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155837","url":null,"abstract":"To provide the requested high band-widths for modern communications the combination of optical and wireless links in Radio-over-Fiber systems (RoF), is expected to be an essential part of next generation wireless communication systems. A crucial part of these links is the broadband optical receiver transforming the signal from high optical to millimeter-wave frequencies at each base station. A new integrated optical receiver chip with an integrated antenna structure supporting more than 100GHz bandwidth is available. To be compatible to standard millimeter-wave components based on hollow metal waveguide structures an efficient coupling solution from the chip to waveguide has to be designed. For the performance of this element the impedance matching to the integrated photo diode is the dominating task. Therefore models of the chip structure with different complexity and computational effort were created and numerically simulated using the Method of Moments and compared with analytical models and empirical results. Since the computational effort of the whole structure is high, it is of interest to what detail the structure has to be modeled for an efficient design process of a coupling solution to a hollow metal waveguide. Radiation patterns of the models are investigated in order to determine a suitable coupling direction.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133658530","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 : 2011-07-08DOI: 10.1109/STYSW.2011.6155838
P. Gemmellaro, E. Ciliberto, D. Wojcieszak, M. Mazur, D. Kaczmarek
Undoped and doped TiO2 nanoparticles were prepared from titanium tetraisopropoxide hydrolysis using sol-gel method. TiO2 nanoparticles were dried and then annealed at 120 °C for 2 h and used without any other treatments for characterization and photocatalytic measurements. Characterizations of nano titania powders were carried out with several experimental techniques such as Thermal Analysis (DSC/TG), X-Ray Diffraction (XRD), Scanning Electron Microscope and Energy Dispersive X-ray spectroscopy (SEM/EDX), UV-Vis spectrophotometry, and Raman spectroscopy. Methyl orange photocatalytic degradation by TiO2 powders was investigated.
{"title":"Synthesis and photocatalytic activity of undoped and doped TiO2 nanopowders","authors":"P. Gemmellaro, E. Ciliberto, D. Wojcieszak, M. Mazur, D. Kaczmarek","doi":"10.1109/STYSW.2011.6155838","DOIUrl":"https://doi.org/10.1109/STYSW.2011.6155838","url":null,"abstract":"Undoped and doped TiO2 nanoparticles were prepared from titanium tetraisopropoxide hydrolysis using sol-gel method. TiO2 nanoparticles were dried and then annealed at 120 °C for 2 h and used without any other treatments for characterization and photocatalytic measurements. Characterizations of nano titania powders were carried out with several experimental techniques such as Thermal Analysis (DSC/TG), X-Ray Diffraction (XRD), Scanning Electron Microscope and Energy Dispersive X-ray spectroscopy (SEM/EDX), UV-Vis spectrophotometry, and Raman spectroscopy. Methyl orange photocatalytic degradation by TiO2 powders was investigated.","PeriodicalId":261643,"journal":{"name":"2011 International Students and Young Scientists Workshop \"Photonics and Microsystems\"","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122851237","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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