Pub Date : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564376
I. Bronwald, A. Filimonov, R. Burkovsky, D. Andronikova, S. Vakhrushev, Z. Ye, D. Chernyshov
PbZr1-xTixO3 (PZT) is one of the most popular and widely used ferroelectric materials. The study of its structure has a significant importance in understanding the mechanisms leading to extraordinary large dielectric and piezoelectric coefficients in this and similar materials. In this paper we describe the results of the study of the structural evolution of piezoelectric PZT single-crystal with x ∼ 0.48 using high-resolution X-ray diffraction technique in a wide temperature range from room temperature to 380 °C. We traced the structure evolution analyzing 2-d intensity maps around several Bragg reflections and observed patterns showing ferroelastic domain creation and development.
{"title":"Structural Evolution in Morphotropic Lead Zirconate Titanate","authors":"I. Bronwald, A. Filimonov, R. Burkovsky, D. Andronikova, S. Vakhrushev, Z. Ye, D. Chernyshov","doi":"10.1109/EEXPOLYTECH.2018.8564376","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564376","url":null,"abstract":"PbZr1-xTixO3 (PZT) is one of the most popular and widely used ferroelectric materials. The study of its structure has a significant importance in understanding the mechanisms leading to extraordinary large dielectric and piezoelectric coefficients in this and similar materials. In this paper we describe the results of the study of the structural evolution of piezoelectric PZT single-crystal with x ∼ 0.48 using high-resolution X-ray diffraction technique in a wide temperature range from room temperature to 380 °C. We traced the structure evolution analyzing 2-d intensity maps around several Bragg reflections and observed patterns showing ferroelastic domain creation and development.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127341994","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564398
I. M. Pleshanov, D. Agafonova, A. Belorus, A. Pastukhov, Daniyar Sherimov
Temperature sensitivity of Oxyfluoride glasses with molecular silver clusters and samarium ions were studied. The experimental procedure for obtaining luminescence spectra at various temperatures is described. The perspective of using oxyfluoride glasses in fiber-optic temperature sensors is considered.
{"title":"Study of Oxyfluoride Glasses with Silver Molecular Clusters for Application in Sensoric and Optoelectronics","authors":"I. M. Pleshanov, D. Agafonova, A. Belorus, A. Pastukhov, Daniyar Sherimov","doi":"10.1109/EEXPOLYTECH.2018.8564398","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564398","url":null,"abstract":"Temperature sensitivity of Oxyfluoride glasses with molecular silver clusters and samarium ions were studied. The experimental procedure for obtaining luminescence spectra at various temperatures is described. The perspective of using oxyfluoride glasses in fiber-optic temperature sensors is considered.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"24 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116908742","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564390
A. E. Karpunin, V. Gerasimov, A. Mazur, I. Pleshakov, Y. Fofanov, O. Proskurina
The structure, formed by polyhydroxylated fullerene (fullerenol), impregnated into a flexible transparent matrix, was studied by NMR method. As a host material water-soluble polymer - polyvinyl alcohol was used. The concentration of filling compound was almost at a maximum permissible value in order to provide intense signal of nuclear spin system of C60 molecules. The observed 13C NMR spectra demonstrated a number of characteristics, which presumably can be explained by the existence of fullerenol clusters.
{"title":"NMR Investigation of Composite Material, Formed by Fullerenol in Polymer Matrix of Polyvinyl Alcohol","authors":"A. E. Karpunin, V. Gerasimov, A. Mazur, I. Pleshakov, Y. Fofanov, O. Proskurina","doi":"10.1109/EEXPOLYTECH.2018.8564390","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564390","url":null,"abstract":"The structure, formed by polyhydroxylated fullerene (fullerenol), impregnated into a flexible transparent matrix, was studied by NMR method. As a host material water-soluble polymer - polyvinyl alcohol was used. The concentration of filling compound was almost at a maximum permissible value in order to provide intense signal of nuclear spin system of C60 molecules. The observed 13C NMR spectra demonstrated a number of characteristics, which presumably can be explained by the existence of fullerenol clusters.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132435772","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564405
R. Buslaev, V. Loboda
The article describes simulation results of a thermoelectric generator based on a Uni-Leg structure. The simulation techniques, advantages of Uni-Leg structure application, silicide materials and simulation results in different temperature ranges are described.
{"title":"Simulation of Uni-Leg Thermoelectric Generator","authors":"R. Buslaev, V. Loboda","doi":"10.1109/EEXPOLYTECH.2018.8564405","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564405","url":null,"abstract":"The article describes simulation results of a thermoelectric generator based on a Uni-Leg structure. The simulation techniques, advantages of Uni-Leg structure application, silicide materials and simulation results in different temperature ranges are described.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122414251","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564427
P. Trubin, E. Savchenko, E. Velichko
In this work the way to increase the security of fingerprints recognition is considered. We suggested the polarimetric technique to be used in recognition systems. The technique was tested on real and model objects. It was demonstrated that the proposed technique allows us to provide effective protection of the system from breaking. Experimental results argue for effectivity of polarimetric techniques against fingerprint spoofing in biometric recognition systems. Based on the polarimetric technique we made a design of polarimetric fiber sensor, which can be used in mobile systems.
{"title":"Development of Polarimetric Sensor for Identification System","authors":"P. Trubin, E. Savchenko, E. Velichko","doi":"10.1109/EEXPOLYTECH.2018.8564427","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564427","url":null,"abstract":"In this work the way to increase the security of fingerprints recognition is considered. We suggested the polarimetric technique to be used in recognition systems. The technique was tested on real and model objects. It was demonstrated that the proposed technique allows us to provide effective protection of the system from breaking. Experimental results argue for effectivity of polarimetric techniques against fingerprint spoofing in biometric recognition systems. Based on the polarimetric technique we made a design of polarimetric fiber sensor, which can be used in mobile systems.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115176226","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564424
Y. Spivak
On the example of the por-Si/Ag composites it is demonstrated the ability to control the morphology of the guest material (Ag) by changing the parameters of the porous media (por-Si). Two groups of key parameters of porous materials important for creating composites based on them are discussed. Porous silicon was obtained by electrochemical anodic etching. The introducing Ag into the pores was performed by the cathodic electrochemical deposition. It is observed the increasing the anodizing time is leads to the noticeably changes of wetting angle of por-Si, and, in turn, significantly affects the morphology of Ag clusters. The growth mechanisms of Ag clusters on the por-Si surface and the fields of its potential application are discussed.
{"title":"Porous Silicon as a Material for Nanocomposites and the Effect of its Parameters on the Morphology of Silver Clusters","authors":"Y. Spivak","doi":"10.1109/EEXPOLYTECH.2018.8564424","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564424","url":null,"abstract":"On the example of the por-Si/Ag composites it is demonstrated the ability to control the morphology of the guest material (Ag) by changing the parameters of the porous media (por-Si). Two groups of key parameters of porous materials important for creating composites based on them are discussed. Porous silicon was obtained by electrochemical anodic etching. The introducing Ag into the pores was performed by the cathodic electrochemical deposition. It is observed the increasing the anodizing time is leads to the noticeably changes of wetting angle of por-Si, and, in turn, significantly affects the morphology of Ag clusters. The growth mechanisms of Ag clusters on the por-Si surface and the fields of its potential application are discussed.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131868341","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564437
O. Kvashenkina, P. Gabdullin, A. V. Arkhipov
The paper presents a new original technology for fast assembly of electronic boards, named SmartFoil. Basic operation principles are described. SmartFoil is compared with the most widely used present techniques of assembly of microwave units, such as furnace soldering, wave soldering, manual or automated tinning.
{"title":"SmartFoil: a Novel Assembly Technology for Electronic Circuit Boards in Multifunctional Units","authors":"O. Kvashenkina, P. Gabdullin, A. V. Arkhipov","doi":"10.1109/EEXPOLYTECH.2018.8564437","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564437","url":null,"abstract":"The paper presents a new original technology for fast assembly of electronic boards, named SmartFoil. Basic operation principles are described. SmartFoil is compared with the most widely used present techniques of assembly of microwave units, such as furnace soldering, wave soldering, manual or automated tinning.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115125035","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564406
Y. Gorokhovatskiy, Daria A. Ignatyeva, Yulia I. Sotova
The study results of the electret state in composite polylactide based films with various hydrophilic nanodispersed fillers are presented. It is established that the emerging charge-dipole centers in the initial polylactide films are responsible for the stability of electret state. It is shown that deep traps have different depths for the positive and negative injected charge carriers.
{"title":"Electret Effect In Composite Polylactide Based Films With Hydrophilic Nanodispersed Fillers","authors":"Y. Gorokhovatskiy, Daria A. Ignatyeva, Yulia I. Sotova","doi":"10.1109/EEXPOLYTECH.2018.8564406","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564406","url":null,"abstract":"The study results of the electret state in composite polylactide based films with various hydrophilic nanodispersed fillers are presented. It is established that the emerging charge-dipole centers in the initial polylactide films are responsible for the stability of electret state. It is shown that deep traps have different depths for the positive and negative injected charge carriers.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131053171","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564362
A. Nikitin, E. Khabitueva
This article describes the design of wideband microwave oscillator ensuring frequency tuning in the range from 6 GHz to 12 GHz. It is made according to the hybrid technology using standard commercial surface-mount electronic components. In particular, the base structure of such oscillator has been defined, and the requirements for its control elements have been set forth. The designed VCO is not inferior in its base characteristics to the similar commercial microwave devices. The developed oscillator has been studied in the framework of its use in a standard phase-locked loop (PLL).
{"title":"A 6–12 GHz Wideband Hybrid VCO","authors":"A. Nikitin, E. Khabitueva","doi":"10.1109/EEXPOLYTECH.2018.8564362","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564362","url":null,"abstract":"This article describes the design of wideband microwave oscillator ensuring frequency tuning in the range from 6 GHz to 12 GHz. It is made according to the hybrid technology using standard commercial surface-mount electronic components. In particular, the base structure of such oscillator has been defined, and the requirements for its control elements have been set forth. The designed VCO is not inferior in its base characteristics to the similar commercial microwave devices. The developed oscillator has been studied in the framework of its use in a standard phase-locked loop (PLL).","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131232568","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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