Pub Date : 2018-04-01DOI: 10.1109/ELNANO.2018.8477515
Anatoliy S. Revko, Roman D. Yershov, Dmytro A. Beznosko, Denys S. Yakosenko
The problems of usage the pulse-width modulation in quasi-resonant converters are considered. Dependence of the parasitic drain-source (collector-emitter) capacitance of power transistors on applied of gate-source (base-emitter) voltage was established. A novel clarification of the mathematical model for high-power bipolar-junction and field-effect transistors taking into account parasitic capacitance changing under control voltage was developed. The possibility of using pulse-width modulation in conjunction with a quasi-resonant converter by using of bipolar-junction and field-effect transistors as a voltage-controlled capacitance for changing the natural frequency of resonant circuit was proposed. Proposed converter eliminates the main disadvantage of quasi-resonant converters and can be use in portable power supply and energy storage systems.
{"title":"Smooth Pulse-Width Modulation in Quasi-Resonant Pulsed Converters Using Transistor as a Voltage-Controlled Capacitance","authors":"Anatoliy S. Revko, Roman D. Yershov, Dmytro A. Beznosko, Denys S. Yakosenko","doi":"10.1109/ELNANO.2018.8477515","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477515","url":null,"abstract":"The problems of usage the pulse-width modulation in quasi-resonant converters are considered. Dependence of the parasitic drain-source (collector-emitter) capacitance of power transistors on applied of gate-source (base-emitter) voltage was established. A novel clarification of the mathematical model for high-power bipolar-junction and field-effect transistors taking into account parasitic capacitance changing under control voltage was developed. The possibility of using pulse-width modulation in conjunction with a quasi-resonant converter by using of bipolar-junction and field-effect transistors as a voltage-controlled capacitance for changing the natural frequency of resonant circuit was proposed. Proposed converter eliminates the main disadvantage of quasi-resonant converters and can be use in portable power supply and energy storage systems.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126298603","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477455
B. Pakhaliuk, O. Husev, V. Shevchenko, Oleksandr Veligorskyi, K. Kroičs
This paper describes novel inductive power transfer approach based on Z-source network with auxiliary circuit. Theoretical analysis along with simulation verification is presented. The main advantages and limitations of the proposed solutions are discussed in conclusions.
{"title":"Novel Inductive Power Transfer Approach Based on Z-Source Network with Compensation Circuit","authors":"B. Pakhaliuk, O. Husev, V. Shevchenko, Oleksandr Veligorskyi, K. Kroičs","doi":"10.1109/ELNANO.2018.8477455","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477455","url":null,"abstract":"This paper describes novel inductive power transfer approach based on Z-source network with auxiliary circuit. Theoretical analysis along with simulation verification is presented. The main advantages and limitations of the proposed solutions are discussed in conclusions.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126449474","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477468
O. Shablykin, O. Kobzar, Ya. A. Prostota, O. Kachkovsky, V. Brovarets, A. Vovk, D. Merzhyievskyi, N. Obernikhina
The study of effects caused by the conjugated bridge binding of heterocycles (forming of $alpha,omega$-disubstituted polyenes) was performed by quantum-chemical and spectral methods. It is shown that such modification of chemical constitution is accompanied by essential changes in the donor-acceptor property and energy gap. For the quantitative estimation of the influence of substituents on the donor-acceptor characteristic, the topological index $varphi_{0}$ is used. Also, the spectral effects of the substituents on the energy gap were studied; they were experimentally observed in the spectra of the heterocycles and their bridged derivatives.
{"title":"Topological Index of Electronic Structure of Conjugated Substituted Bis-Oxazoles and Their Spectral-Luminescent Properties","authors":"O. Shablykin, O. Kobzar, Ya. A. Prostota, O. Kachkovsky, V. Brovarets, A. Vovk, D. Merzhyievskyi, N. Obernikhina","doi":"10.1109/ELNANO.2018.8477468","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477468","url":null,"abstract":"The study of effects caused by the conjugated bridge binding of heterocycles (forming of $alpha,omega$-disubstituted polyenes) was performed by quantum-chemical and spectral methods. It is shown that such modification of chemical constitution is accompanied by essential changes in the donor-acceptor property and energy gap. For the quantitative estimation of the influence of substituents on the donor-acceptor characteristic, the topological index $varphi_{0}$ is used. Also, the spectral effects of the substituents on the energy gap were studied; they were experimentally observed in the spectra of the heterocycles and their bridged derivatives.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124686868","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477496
A. Verlan, S. Polozhaenko
A procedure for formalized presentation of a sequence of test (verify) hypotheses in the course of checking the health of electronic devices when they are decomposed into subschema is developed. The procedure is brought to a practical algorithm that provides an effective (from the point of view of minimizing labor input) search for faulty subschemas of the electronic device.
{"title":"Formalization of Representation of Sequence of Test Hypotheses in Diagnosing Electronic Schemes","authors":"A. Verlan, S. Polozhaenko","doi":"10.1109/ELNANO.2018.8477496","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477496","url":null,"abstract":"A procedure for formalized presentation of a sequence of test (verify) hypotheses in the course of checking the health of electronic devices when they are decomposed into subschema is developed. The procedure is brought to a practical algorithm that provides an effective (from the point of view of minimizing labor input) search for faulty subschemas of the electronic device.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132820847","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477494
G. Bolotov, M. Bolotov, S. Yushchenko
The article considers the possibility of increasing stability of DC high-current glow discharge in the diffusion bonding processes at discharge currents 1 … 30 A and the gas pressure 1.33 … 13.3 kPa by replacing the monolithic anode with a multi-section one in the running (rotating) electric field. It is shown that the at constant discharge current the using of the 5-section anode assembly with a rotating electric field increases the region of a glow discharge stable existence by 1.5 … 1.7 times and the energy density in the heating spot in 2.6 … 2.9 times in comparison with a similar electrode system with the stationary electric field.
{"title":"Stabilization of a High-Current Glow Discharge Under the Welding Conditions","authors":"G. Bolotov, M. Bolotov, S. Yushchenko","doi":"10.1109/ELNANO.2018.8477494","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477494","url":null,"abstract":"The article considers the possibility of increasing stability of DC high-current glow discharge in the diffusion bonding processes at discharge currents 1 … 30 A and the gas pressure 1.33 … 13.3 kPa by replacing the monolithic anode with a multi-section one in the running (rotating) electric field. It is shown that the at constant discharge current the using of the 5-section anode assembly with a rotating electric field increases the region of a glow discharge stable existence by 1.5 … 1.7 times and the energy density in the heating spot in 2.6 … 2.9 times in comparison with a similar electrode system with the stationary electric field.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130139481","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477442
V. Palahin, J. Juhár, O. Zorin, D. Viediernikov, E. Palahina
This paper is devoted to the modeling and improvement of communication systems using noise signals at modulation of parameters of non-Gaussian random processes. The algorithms of noise signal processing is synthesized when applying polynomial decision rules by the moment quality criterion of upper bounds of error probability. New mathematical models and methods of noise signals processing are developed. Simulation of the communication system was carried out in Simulink.
{"title":"Computer Modeling of Noise Signals Processing System in Non-Gaussian Noise","authors":"V. Palahin, J. Juhár, O. Zorin, D. Viediernikov, E. Palahina","doi":"10.1109/ELNANO.2018.8477442","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477442","url":null,"abstract":"This paper is devoted to the modeling and improvement of communication systems using noise signals at modulation of parameters of non-Gaussian random processes. The algorithms of noise signal processing is synthesized when applying polynomial decision rules by the moment quality criterion of upper bounds of error probability. New mathematical models and methods of noise signals processing are developed. Simulation of the communication system was carried out in Simulink.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114813587","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477479
Z. Eremenko, Y. Tarasov, I. Volovichev
We present a novel theoretical method for solving the Maxwell equations to obtain the frequency spectra of inhomogeneous and asymmetric cavity resonators using only two scalar potentials. The structure we study is a layered spherical cavity resonator with symmetrically or asymmetrically embedded spherical dielectric inclusion. The comparison of the exact numerical results for the frequency spectrum of such a layered resonator with centralized inner sphere, which are obtained directly from Maxwell equations, and the frequency spectrum found based on the developed theory reveals good agreement at the initial part of the frequency scale. The coincidence accuracy depends significantly on the number of seed resonant modes that we use in numerical simulations.
{"title":"Mode Decomposition Method for the Frequency Spectrum of Double-Spherical Cavity Resonator","authors":"Z. Eremenko, Y. Tarasov, I. Volovichev","doi":"10.1109/ELNANO.2018.8477479","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477479","url":null,"abstract":"We present a novel theoretical method for solving the Maxwell equations to obtain the frequency spectra of inhomogeneous and asymmetric cavity resonators using only two scalar potentials. The structure we study is a layered spherical cavity resonator with symmetrically or asymmetrically embedded spherical dielectric inclusion. The comparison of the exact numerical results for the frequency spectrum of such a layered resonator with centralized inner sphere, which are obtained directly from Maxwell equations, and the frequency spectrum found based on the developed theory reveals good agreement at the initial part of the frequency scale. The coincidence accuracy depends significantly on the number of seed resonant modes that we use in numerical simulations.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116346666","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477514
H. Klym, I. Vasylchyshyn, I. Hadzaman, R. Dunets
Porous structure and exploitation properties in nanostructured MgO-Al2O3 ceramics prepared at 1300 °C and 1400 °C for 5 and 9 h were studied. In ceramics sintered at higher temperatures and durations there is an increase in the area of contact between grains, and also the open porosity is formed, which leads to an increase in the effective adsorption of humidity. A branched pore structure is required for effective sorption processes. Humidity sensitivity of ceramics and the minimum hysteresis in adsorption-desorption cycles are due to the three-dimensional distribution of pores in size and insignificant number of additional phases. The loss of humidity sensitivity in ceramics sintered at higher temperatures and durations is related with evolution of porous structure of ceramics. The degradation transformations in the investigated ceramic lead to the improvement of their humidity sensitivity.
{"title":"Porous Structure and Exploitation Properties of Nanostructured MgO-Al2O3 Ceramics Technologically Modified by Time-Temperature Regimes","authors":"H. Klym, I. Vasylchyshyn, I. Hadzaman, R. Dunets","doi":"10.1109/ELNANO.2018.8477514","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477514","url":null,"abstract":"Porous structure and exploitation properties in nanostructured MgO-Al2O3 ceramics prepared at 1300 °C and 1400 °C for 5 and 9 h were studied. In ceramics sintered at higher temperatures and durations there is an increase in the area of contact between grains, and also the open porosity is formed, which leads to an increase in the effective adsorption of humidity. A branched pore structure is required for effective sorption processes. Humidity sensitivity of ceramics and the minimum hysteresis in adsorption-desorption cycles are due to the three-dimensional distribution of pores in size and insignificant number of additional phases. The loss of humidity sensitivity in ceramics sintered at higher temperatures and durations is related with evolution of porous structure of ceramics. The degradation transformations in the investigated ceramic lead to the improvement of their humidity sensitivity.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132130355","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477504
E. Velichko
We investigate the resonances in the scattering and absorption of the TE-polarized light by the solid silver, gold and copper wires of nanoscale diameter and circular cross-section. Here we use the analytical solution and experimental data for the metal complex permittivity function in the visible range. We find that the well-known textbook equation for the wavelength of the localized surface plasmon (LSP) resonances is valid for a silver cylinder but not for gold and copper ones. The reason is different values of losses in these metals: gold and copper have much larger values of imaginary part of the relative permittivity in the visible range than silver. This shifts the LSP resonances to considerably longer wavelengths. We present a simple modified equation for finding these wavelengths.
{"title":"Plasmon Resonance Wavelengths of Circular Metal Nanowires with Account of Losses","authors":"E. Velichko","doi":"10.1109/ELNANO.2018.8477504","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477504","url":null,"abstract":"We investigate the resonances in the scattering and absorption of the TE-polarized light by the solid silver, gold and copper wires of nanoscale diameter and circular cross-section. Here we use the analytical solution and experimental data for the metal complex permittivity function in the visible range. We find that the well-known textbook equation for the wavelength of the localized surface plasmon (LSP) resonances is valid for a silver cylinder but not for gold and copper ones. The reason is different values of losses in these metals: gold and copper have much larger values of imaginary part of the relative permittivity in the visible range than silver. This shifts the LSP resonances to considerably longer wavelengths. We present a simple modified equation for finding these wavelengths.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132208821","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 : 2018-04-01DOI: 10.1109/ELNANO.2018.8477524
I. Puchades, Panos P. Markopoulos, B. Landi, S. Lyshevski
Recent advances in nanotechnology support remote networked sensors with wireless communication capabilities. Carbon nanotube antennas are fabricated and tested to detect radiation with a displacement damage dose sensitivity of $1.1times 10^{-14}$ dB/MeV/g. The antenna directive gain, efficiency, impedance, beam width, radiation power, radiation pattern affect signal strength, transmission range, error rates and throughput. Data masking and authorized access control are enabled by secure communication which reduces the overall vulnerability. We protect and secure information by encrypting the data using symmetric encryption schemes. Data-centric security and resiliency are considered in wireless communication applications which may use the proposed carbon nanotube antennas. Using the Advanced Encryption Standard, the symmetric encryption algorithms are implemented, tested and evaluated.
{"title":"Planar Carbon Nanotube Antennas and Data-Centric Secure Communication","authors":"I. Puchades, Panos P. Markopoulos, B. Landi, S. Lyshevski","doi":"10.1109/ELNANO.2018.8477524","DOIUrl":"https://doi.org/10.1109/ELNANO.2018.8477524","url":null,"abstract":"Recent advances in nanotechnology support remote networked sensors with wireless communication capabilities. Carbon nanotube antennas are fabricated and tested to detect radiation with a displacement damage dose sensitivity of $1.1times 10^{-14}$ dB/MeV/g. The antenna directive gain, efficiency, impedance, beam width, radiation power, radiation pattern affect signal strength, transmission range, error rates and throughput. Data masking and authorized access control are enabled by secure communication which reduces the overall vulnerability. We protect and secure information by encrypting the data using symmetric encryption schemes. Data-centric security and resiliency are considered in wireless communication applications which may use the proposed carbon nanotube antennas. Using the Advanced Encryption Standard, the symmetric encryption algorithms are implemented, tested and evaluated.","PeriodicalId":269665,"journal":{"name":"2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132973203","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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