Pub Date : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564430
P. Gabdullin, I. Bizyaev, V. Babyuk, V. A. Filatov, N. Gnuchev, V. Osipov, O. Kvashenkina, A. Arkhipov
Experiments have demonstrated that thin discontinuous Mo films deposited on oxidized Si wafers may possess the capability of low-field electron emission. For different samples with effective thickness 2–6 nm the emission threshold (macroscopic electric field) varied between 3.0 and $6.5 mathbf{V}/boldsymbol{mu} mathbf{m}$. Titanium films having similar parameters showed to be incapable of emission field magnitudes $sim 10 mathbf{V}/boldsymbol{mu} mathbf{m}$. Results of AFM and SEM studies allowed us to associate this difference with different morphology of the deposited films. Films of Mo were comprised by separated irregular islands with 5–10 nm height and lateral sizes of tens of nanometers. Films of Ti were also discontinuous but consisted of larger domains having distinctly dendritic structure. These new findings are in good agreement with the results of previous studies performed with carbon island films.
{"title":"Low-Field Electron Emission from Metallic Nanodots on Oxidized Silicon","authors":"P. Gabdullin, I. Bizyaev, V. Babyuk, V. A. Filatov, N. Gnuchev, V. Osipov, O. Kvashenkina, A. Arkhipov","doi":"10.1109/EEXPOLYTECH.2018.8564430","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564430","url":null,"abstract":"Experiments have demonstrated that thin discontinuous Mo films deposited on oxidized Si wafers may possess the capability of low-field electron emission. For different samples with effective thickness 2–6 nm the emission threshold (macroscopic electric field) varied between 3.0 and $6.5 mathbf{V}/boldsymbol{mu} mathbf{m}$. Titanium films having similar parameters showed to be incapable of emission field magnitudes $sim 10 mathbf{V}/boldsymbol{mu} mathbf{m}$. Results of AFM and SEM studies allowed us to associate this difference with different morphology of the deposited films. Films of Mo were comprised by separated irregular islands with 5–10 nm height and lateral sizes of tens of nanometers. Films of Ti were also discontinuous but consisted of larger domains having distinctly dendritic structure. These new findings are in good agreement with the results of previous studies performed with carbon island films.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"37 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":"114446971","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.2018.8564384
M. Baranov, G. L. Klimchitskaya, V. Mostepanenko, E. Velichko
This article investigates contribution to the free energy of thin protein films, deposited on substrates made of inorganic materials, which is caused by fluctuations of the electromagnetic field. It is shown that for thinner than $1 mu mathbf{m}$ protein films deposited on a silica glass substrate the magnitude of the fluctuation-induced free energy is of order 0.1 fJ/mm2, Dependence of this free energy on the volume fraction of plasticizer and on the film thickness are found.
本文研究了电磁场波动对沉积在无机材料基底上的蛋白质薄膜自由能的贡献。结果表明，对于厚度小于$1 mu mathbf{m}$的蛋白质薄膜，其波动诱导的自由能量级为0.1 fJ/mm2，该自由能与增塑剂的体积分数和薄膜厚度有关。
{"title":"Contribution of Electromagnetic Fluctuations to the Free Energy of Protein Films","authors":"M. Baranov, G. L. Klimchitskaya, V. Mostepanenko, E. Velichko","doi":"10.1109/EEXPOLYTECH.2018.8564384","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564384","url":null,"abstract":"This article investigates contribution to the free energy of thin protein films, deposited on substrates made of inorganic materials, which is caused by fluctuations of the electromagnetic field. It is shown that for thinner than $1 mu mathbf{m}$ protein films deposited on a silica glass substrate the magnitude of the fluctuation-induced free energy is of order 0.1 fJ/mm2, Dependence of this free energy on the volume fraction of plasticizer and on the film thickness are found.","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":"129148563","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.2018.8564393
A. Varlamov, A. Shamray, V. Lebedev, P. M. Agrusov, I. Il’ichev
Three experimental methods employed for investigation of surface acoustic waves (SAW) were used to optimize a lithium niobate integrated optical TE-TM mode convertor. These were network analyzer measurements of interdigital transducers (IDTs), diffraction measurements at 532 nm, and fiber optic interferometery. The samples with five different configurations of IDTs were investigated. The methods give complementary data about SAW excitation, distribution, and interaction with light and can be efficiently used for optimization and quality control of different SAW devices.
{"title":"Search for Optimal Conditions of SAW Excitation by Lithium Niobate Integrated Optical TE-TM Mode Convertor","authors":"A. Varlamov, A. Shamray, V. Lebedev, P. M. Agrusov, I. Il’ichev","doi":"10.1109/EEXPOLYTECH.2018.8564393","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564393","url":null,"abstract":"Three experimental methods employed for investigation of surface acoustic waves (SAW) were used to optimize a lithium niobate integrated optical TE-TM mode convertor. These were network analyzer measurements of interdigital transducers (IDTs), diffraction measurements at 532 nm, and fiber optic interferometery. The samples with five different configurations of IDTs were investigated. The methods give complementary data about SAW excitation, distribution, and interaction with light and can be efficiently used for optimization and quality control of different SAW devices.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"160 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":"116300595","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.2018.8564423
Xunpeng Zhang, O. Martynova, Vitaliy E. Gasumyants
We present the results on the normal-state Nernst coefficient, $boldsymbol{Q}$, in the $mathbf{Y}_{1-boldsymbol{x}}mathbf{Ca}_{boldsymbol{x}}mathbf{Ba}_{2}mathbf{Cu}_{2.8}mathbf{Zn}_{0.2}mathbf{O}_{boldsymbol{y}}$ samples with different calcium content. The experimental $boldsymbol{Q}(boldsymbol{T})$ dependences were measures and quantitatively analyzed within a narrow-band model using the results obtained previously from the thermopower analysis. The values of the electron mobility and the asymmetry degree of the dispersion law were determined and their variations with increasing calcium content were discussed.
{"title":"The Normal-State Nernst Coefficient in the $mathrm{Y}_{1-x}text{Ca}_{x}text{Ba}_{2}text{Cu}_{2.8}text{Zn}_{0.2}mathrm{O}_{y}$ System","authors":"Xunpeng Zhang, O. Martynova, Vitaliy E. Gasumyants","doi":"10.1109/EEXPOLYTECH.2018.8564423","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564423","url":null,"abstract":"We present the results on the normal-state Nernst coefficient, $boldsymbol{Q}$, in the $mathbf{Y}_{1-boldsymbol{x}}mathbf{Ca}_{boldsymbol{x}}mathbf{Ba}_{2}mathbf{Cu}_{2.8}mathbf{Zn}_{0.2}mathbf{O}_{boldsymbol{y}}$ samples with different calcium content. The experimental $boldsymbol{Q}(boldsymbol{T})$ dependences were measures and quantitatively analyzed within a narrow-band model using the results obtained previously from the thermopower analysis. The values of the electron mobility and the asymmetry degree of the dispersion law were determined and their variations with increasing calcium content were discussed.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"292 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":"122301775","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.2018.8564416
K. Smirnov, V. Davydov, G. V. Tushavin, S. Glagolev
Application of InP/InGaAs photocathodes in devices, which work short-wave infrared range are justified. Construction of the vacuum photoelectronic detector is represented. All steps of creation effective photocathode based on the InP/InGaAs heterostructures were given. The effects of temperature variations on InP/InGaAs photocathode are investigated
{"title":"Temperature Investigations of InP/InGaAs Based Photocathodes","authors":"K. Smirnov, V. Davydov, G. V. Tushavin, S. Glagolev","doi":"10.1109/EEXPOLYTECH.2018.8564416","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564416","url":null,"abstract":"Application of InP/InGaAs photocathodes in devices, which work short-wave infrared range are justified. Construction of the vacuum photoelectronic detector is represented. All steps of creation effective photocathode based on the InP/InGaAs heterostructures were given. The effects of temperature variations on InP/InGaAs photocathode are investigated","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"20 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":"134472031","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.2018.8564439
Dmitry Vasilyev, A. Rashich
Spectrally efficient frequency division multiplexing (SEFDM) is considered from the Euclidean distance point of view. The simulations are performed for QPSK modulated subcarriers with different bandwidth compression factor values (0.5, 0.75 and 1) in the presence and absence of average power equalization. It is shown that SEFDM N-dimensional points have a few very close interfering points for medium compression factors. Thus, a special rule can be used to choose particular $N$-dimensional points to increase BER performance of SEFDM. The proposed results are useful for SEFDM coded modulation schemes development where non-informational subcarriers are chosen in the same way as in block error correction schemes.
{"title":"SEFDM-signals Euclidean Distance Analysis","authors":"Dmitry Vasilyev, A. Rashich","doi":"10.1109/EEXPOLYTECH.2018.8564439","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564439","url":null,"abstract":"Spectrally efficient frequency division multiplexing (SEFDM) is considered from the Euclidean distance point of view. The simulations are performed for QPSK modulated subcarriers with different bandwidth compression factor values (0.5, 0.75 and 1) in the presence and absence of average power equalization. It is shown that SEFDM N-dimensional points have a few very close interfering points for medium compression factors. Thus, a special rule can be used to choose particular $N$-dimensional points to increase BER performance of SEFDM. The proposed results are useful for SEFDM coded modulation schemes development where non-informational subcarriers are chosen in the same way as in block error correction schemes.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"103 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":"132305311","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.2018.8564429
O. Kotov, I. Chapalo, A. Petrov
The ability of external impact location determining in distributed multimode fiber interferometer with continuous coherent fiber excitation is demonstrated. It is based on the use of increasing number of excited mode groups along fiber.
{"title":"Distributed Interference Multimode Fiber Sensor with Disturbances Localization Ability","authors":"O. Kotov, I. Chapalo, A. Petrov","doi":"10.1109/EEXPOLYTECH.2018.8564429","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564429","url":null,"abstract":"The ability of external impact location determining in distributed multimode fiber interferometer with continuous coherent fiber excitation is demonstrated. It is based on the use of increasing number of excited mode groups along fiber.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"24 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":"131059320","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.2018.8564418
A. P. Golovitskii, A. Pelli, Oksana A. Remiga
The analytical expressions for estimating the spatial distributions of quasi-static electric field are obtained for the near-field zone of single-layer solenoidal inductors surrounded outside by a thin dielectric wall and then by a medium with complex permittivity. It is shown that the presence of such a wall leads to the increase of self-capacitance, effective inductance and active resistance of inductor. The efficacy of active power transfer to the conducting medium increases in comparison with the case of absence of said wall.
{"title":"Properties of the Solenoidal Inductor Surrounded by a Conducting Medium with a Dielectric Wall","authors":"A. P. Golovitskii, A. Pelli, Oksana A. Remiga","doi":"10.1109/EEXPOLYTECH.2018.8564418","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564418","url":null,"abstract":"The analytical expressions for estimating the spatial distributions of quasi-static electric field are obtained for the near-field zone of single-layer solenoidal inductors surrounded outside by a thin dielectric wall and then by a medium with complex permittivity. It is shown that the presence of such a wall leads to the increase of self-capacitance, effective inductance and active resistance of inductor. The efficacy of active power transfer to the conducting medium increases in comparison with the case of absence of said wall.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"36 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":"121419797","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.2018.8564400
A. Petrovskaya, A. Tsyganov, A. Kladkov, S. Surov, M. R. Stakhiv, V. Polischuk
For the first time we propose a new “dry” technology for the decontaminating of the nuclear power plant (NPP) constructions by the ion sputtering of the nano- and micro-sized radioactive layers from the contaminated surface, the sputtering process is provided by a special configuration plasma discharge in an inert gas. Unlike the traditional radiochemical deactivation methods, which form the large volume of a liquid radioactive waste (LRW), the proposed technology allows to condense the removed radionuclides in a compact solid form. This technology is important both for the decommissioning of a NPP (including the deactivation of irradiated reactor graphite) and in the current operations and planned repairs of nuclear reactors. In addition, the another important opportunity of the technology is producing of new materials like a beta-active “nano-micro-sandwich” (enriched with radioisotope 14C or other.) for the useful applications, e.g. in a nuclear medicine and for a new type of betavoltaic batteries.
{"title":"Surface Deactivation of the Nuclear Power Plants Constructions by a New Plasma Method","authors":"A. Petrovskaya, A. Tsyganov, A. Kladkov, S. Surov, M. R. Stakhiv, V. Polischuk","doi":"10.1109/EEXPOLYTECH.2018.8564400","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564400","url":null,"abstract":"For the first time we propose a new “dry” technology for the decontaminating of the nuclear power plant (NPP) constructions by the ion sputtering of the nano- and micro-sized radioactive layers from the contaminated surface, the sputtering process is provided by a special configuration plasma discharge in an inert gas. Unlike the traditional radiochemical deactivation methods, which form the large volume of a liquid radioactive waste (LRW), the proposed technology allows to condense the removed radionuclides in a compact solid form. This technology is important both for the decommissioning of a NPP (including the deactivation of irradiated reactor graphite) and in the current operations and planned repairs of nuclear reactors. In addition, the another important opportunity of the technology is producing of new materials like a beta-active “nano-micro-sandwich” (enriched with radioisotope 14C or other.) for the useful applications, e.g. in a nuclear medicine and for a new type of betavoltaic batteries.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"153 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":"123089120","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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