Pub Date : 2023-05-18DOI: 10.54503/18291171-2023.16.1-29
M. Hovhannisyan, J. Vardanyan, A. R. Mnatsakanyan, K. A. Mahtesyan, S. A. Mkhitaryan
The paper summarizes the results of our research conducted on the study of corundum crystals with various activating agents for development and creation of UV and VUV detectors. Corundum crystals with certain parameters were chosen as the optimal converter of UV and VUV radiant energy into the visible region of radiation for creating UV and VUV detectors with high spatial and temporal characteristics, which also have high radiation and thermal resistance.
{"title":"Hovhannisyan, M. A., Summary of the Results of Research and Selection of Corundum Crystalsfor Development and Creation of UV and VUV Detectors","authors":"M. Hovhannisyan, J. Vardanyan, A. R. Mnatsakanyan, K. A. Mahtesyan, S. A. Mkhitaryan","doi":"10.54503/18291171-2023.16.1-29","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.1-29","url":null,"abstract":"The paper summarizes the results of our research conducted on the study of corundum\u0000crystals with various activating agents for development and creation of UV and VUV detectors.\u0000Corundum crystals with certain parameters were chosen as the optimal converter of UV and VUV\u0000radiant energy into the visible region of radiation for creating UV and VUV detectors with high\u0000spatial and temporal characteristics, which also have high radiation and thermal resistance.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76355015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-18DOI: 10.54503/18291171-2023.16.1-
M. Alexanian
A recurrence relation ansatz between annihilation operators applied to the hopping interaction term of the Jaynes-Cummings-Hubbard model (JCHM) reduces the JCHM to that of the ordinary Jaynes-Cummings model (JCM), albeit, with a boson energy depending on the hopping strength. This allows us to calculate the phase diagram for the Mott-to-superfluid phase transition and the critical hopping strength as a function of the detuning.
{"title":"Particle-Hole Ansatz in the Jaynes-Cummings-Hubbard Model","authors":"M. Alexanian","doi":"10.54503/18291171-2023.16.1-","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.1-","url":null,"abstract":"A recurrence relation ansatz between annihilation operators applied to the hopping\u0000interaction term of the Jaynes-Cummings-Hubbard model (JCHM) reduces the JCHM to that of the ordinary Jaynes-Cummings model (JCM), albeit, with a boson energy depending on the hopping strength. This allows us to calculate the phase diagram for the Mott-to-superfluid phase transition and the critical hopping strength as a function of the detuning.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90024564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-18DOI: 10.54503/18291171-2023.16.1-7
E. Mounir, H. Mabchour, D. Ennajh, A. El oujdi, A. El Kaaouachi, B. Ait Hammou, A. Echchelh, S. Dlimi
In this work, we study the behavior of resistivity as a function of temperature and for several samples of ZnSxSe1-x thin films with x = 0, 0.2, 0.4, 0.5, 0.6, 0.8 and 1.0 respectively. In fact, we re-analyze in our investigation experimental measurements obtained by M. Popa et al. [1] in the range of temperature from 300 K to 500 K. We showed that the resistivity follows a nearest neighbor site hopping conduction mechanism with 𝝆 = 𝝆𝟎𝐞𝐱𝐩 ( 𝑬𝒂 𝒌𝑩𝑻 ) for very high temperatures and Mott variable range hopping conduction with 𝝆 = 𝝆𝑪𝐞𝐱𝐩 (𝑻𝟎 𝑻 )𝟏/𝟒 for relatively low temperatures. The crossover between the two regimes can be explained by the competition between the localization length scale 𝝃𝒍𝒐𝒄and the hopping length scale 𝑹𝒉𝒐𝒑.
{"title":"Crossover from the Mott Variable Range Hopping Conduction Regime\u0000to Nearest Neighbor Site Hopping Regime in ZnSxSe1-x Thin Films","authors":"E. Mounir, H. Mabchour, D. Ennajh, A. El oujdi, A. El Kaaouachi, B. Ait Hammou, A. Echchelh, S. Dlimi","doi":"10.54503/18291171-2023.16.1-7","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.1-7","url":null,"abstract":"In this work, we study the behavior of resistivity as a function of temperature and for\u0000several samples of ZnSxSe1-x thin films with x = 0, 0.2, 0.4, 0.5, 0.6, 0.8 and 1.0 respectively. In\u0000fact, we re-analyze in our investigation experimental measurements obtained by M. Popa et al. [1]\u0000in the range of temperature from 300 K to 500 K. We showed that the resistivity follows a nearest\u0000neighbor site hopping conduction mechanism with 𝝆 = 𝝆𝟎𝐞𝐱𝐩 ( 𝑬𝒂\u0000𝒌𝑩𝑻\u0000) for very high temperatures\u0000and Mott variable range hopping conduction with 𝝆 = 𝝆𝑪𝐞𝐱𝐩 (𝑻𝟎\u0000𝑻 )𝟏/𝟒 for relatively low\u0000temperatures. The crossover between the two regimes can be explained by the competition\u0000between the localization length scale 𝝃𝒍𝒐𝒄and the hopping length scale 𝑹𝒉𝒐𝒑.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82231500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-18DOI: 10.54503/18291171-2023.16.1-20
H. Shahinyan, L. Ghazaryan, N. J. Grigoryan
Behavior of microparticle in potential hole has been studied. One-dimensional, twodimensional and three-dimensional potential holes with infinitive deepness (with infinitively high walls) and flat bottom were observed. The stationary case was discussed. The wave function, describing the particle state, probabilities of the particle being in the given hole and its energy, depending on dimensional sizes were determined. For each case the dependencies of the wave function and its squared modulus were presented on one, two and three coordinates, respectively.
{"title":"Microparticles in One-Dimensional, Two-Dimensional and Three-Dimensional Rectangular Potential Holes","authors":"H. Shahinyan, L. Ghazaryan, N. J. Grigoryan","doi":"10.54503/18291171-2023.16.1-20","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.1-20","url":null,"abstract":"Behavior of microparticle in potential hole has been studied. One-dimensional, twodimensional and three-dimensional potential holes with infinitive deepness (with infinitively high\u0000walls) and flat bottom were observed. The stationary case was discussed. The wave function,\u0000describing the particle state, probabilities of the particle being in the given hole and its energy,\u0000depending on dimensional sizes were determined. For each case the dependencies of the wave\u0000function and its squared modulus were presented on one, two and three coordinates, respectively.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86826172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-18DOI: 10.54503/18291171-2023.16.1-13
D. Ennajih, H. Mabchour, A. El Kaaouachi, A. Echchelh, A. El oujdi, E. Mounir, B. Hammou, S. Dlimi
We have studied the transport properties in metallic n-type InP semiconductor. We show that the dependence on temperature of metallic electrical conductivity obey to the law 𝜎 = 𝜎(𝑇 = 0) + 𝑚𝑇1/2. We highlight the absence of a minimum electrical conductivity 𝜎𝑚𝑖𝑛 proposed by Mott at the metal-insulator transition. We show that the conductivity at temperature T = 0 K, 𝜎(𝑇 = 0) , follows a scaling law as a function of the effective parallel and perpendicular Bohr radii 𝑎∥ and 𝑎⊥.
{"title":"Continuous Metal-Insulator Transition and Scale Laws in Metallic n-Type InP","authors":"D. Ennajih, H. Mabchour, A. El Kaaouachi, A. Echchelh, A. El oujdi, E. Mounir, B. Hammou, S. Dlimi","doi":"10.54503/18291171-2023.16.1-13","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.1-13","url":null,"abstract":"We have studied the transport properties in metallic n-type InP semiconductor. We\u0000show that the dependence on temperature of metallic electrical conductivity obey to the law 𝜎 = 𝜎(𝑇 = 0) + 𝑚𝑇1/2. We highlight the absence of a minimum electrical conductivity 𝜎𝑚𝑖𝑛 proposed by Mott at the metal-insulator transition. We show that the conductivity at temperature T = 0 K, 𝜎(𝑇 = 0) , follows a scaling law as a function of the effective parallel and perpendicular Bohr radii 𝑎∥ and 𝑎⊥.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75334746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-03DOI: 10.54503/0002-3035-2023-58.1-113
А. В. Еганян, Н. Э. Коканян, М. Айллери, Э. П. Коканян
Получены новые простые выражения для быстрой оценки коэффициентов поглощения продольных и поперечных гиперзвуковых волн в монокристаллах ниобата лития в режиме Ахиезера. Показано, что при комнатных температурах коэффициенты затухания гиперзвуковых волн, рассчитанные по полученным выражениям, и определенные экспериментально их значения, хорошо согласуются. New and simple expressions are obtained for a quick assessment of the absorption coefficients of longitudinal and transverse and hypersonic waves in lithium niobate single crystals in the Akhiezer regime. It is shown that at room temperature the attenuation coefficients of hypersonic waves calculated from the obtained expressions and the values determined experimentally are in good agreement.
{"title":"Поглощение гиперзвуковых волн в монокристаллах ниобата лития","authors":"А. В. Еганян, Н. Э. Коканян, М. Айллери, Э. П. Коканян","doi":"10.54503/0002-3035-2023-58.1-113","DOIUrl":"https://doi.org/10.54503/0002-3035-2023-58.1-113","url":null,"abstract":"Получены новые простые выражения для быстрой оценки коэффициентов поглощения продольных и поперечных гиперзвуковых волн в монокристаллах ниобата лития в режиме Ахиезера. Показано, что при комнатных\u0000температурах коэффициенты затухания гиперзвуковых волн, рассчитанные по\u0000полученным выражениям, и определенные экспериментально их значения, хорошо согласуются. \u0000New and simple expressions are obtained for a quick assessment of the absorption\u0000coefficients of longitudinal and transverse and hypersonic waves in lithium niobate single\u0000crystals in the Akhiezer regime. It is shown that at room temperature the attenuation coefficients\u0000of hypersonic waves calculated from the obtained expressions and the values determined\u0000experimentally are in good agreement.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73162486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-03DOI: 10.54503/0002-3035-2023-58.1-118
Григорий Айвазян, Левон Ашотович Ахоян, А. Р. Даштоян, Л. А. Матевосян
Оптимизирована технология совместного и последовательного вакуумного напыления перовскитных пленок со смешанными галогенами (CH3NH3PbI3–xClx). Продемонстрирована возможность улучшения термической стабильности пленок добавлением атомов цезия в неорганический прекурсор. Синтезированы и исследованы структурные и оптические свойства перовскитных пленок на черном кремнии. Показано, что формируются качественные по структуре и фазовому составу пленки, которые характеризуются низким коэффициентом отражения в широком диапазоне длин волн излучения. Вакуумно-напыленные перовскитные пленки на черном кремнии имеют большой потенциал для разработки высокоэффективных тандемных солнечных элементов. The technology of vacuum co-deposition and sequential deposition of the mixed-halide perovskite films (CH3NH3PbI3–xClx) has been optimized. The possibility of improving the thermal stability of films by adding cesium atoms to an inorganic precursor is demonstrated. The structural and optical properties of perovskite films on black silicon are synthesized and studied. It is shown that films of high quality in structure and phase composition are formed, which are characterized by a low reflection coefficient in a wide range of radiation wavelengths. Vacuum-deposited perovskite films on black silicon have great potential for the development of high-efficiency tandem solar cells.
{"title":"Получение и исследование вакуумно-напыленных перовскитных пленок CH3NH3PbI3–xClx на черном кремнии","authors":"Григорий Айвазян, Левон Ашотович Ахоян, А. Р. Даштоян, Л. А. Матевосян","doi":"10.54503/0002-3035-2023-58.1-118","DOIUrl":"https://doi.org/10.54503/0002-3035-2023-58.1-118","url":null,"abstract":"Оптимизирована технология совместного и последовательного вакуумного напыления перовскитных пленок со смешанными галогенами\u0000(CH3NH3PbI3–xClx). Продемонстрирована возможность улучшения термической\u0000стабильности пленок добавлением атомов цезия в неорганический прекурсор.\u0000Синтезированы и исследованы структурные и оптические свойства перовскитных пленок на черном кремнии. Показано, что формируются качественные по\u0000структуре и фазовому составу пленки, которые характеризуются низким коэффициентом отражения в широком диапазоне длин волн излучения. Вакуумно-напыленные перовскитные пленки на черном кремнии имеют большой потенциал для\u0000разработки высокоэффективных тандемных солнечных элементов. \u0000The technology of vacuum co-deposition and sequential deposition of the mixed-halide\u0000perovskite films (CH3NH3PbI3–xClx) has been optimized. The possibility of improving the\u0000thermal stability of films by adding cesium atoms to an inorganic precursor is demonstrated.\u0000The structural and optical properties of perovskite films on black silicon are synthesized and\u0000studied. It is shown that films of high quality in structure and phase composition are formed,\u0000which are characterized by a low reflection coefficient in a wide range of radiation wavelengths.\u0000Vacuum-deposited perovskite films on black silicon have great potential for the development\u0000of high-efficiency tandem solar cells.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88391158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-03DOI: 10.54503/0002-3035-2023-58.1-137
Лусине Рафиковна Алоян, Арцвик Артуровна Аветисян
Из полученных индуцированных спектров кругового дихроизма выявлено, что исследуемый порфирин связывается с ДНК методом интеркаляции, а его Zn-содержащий аналог методом внешнего упорядоченного взаимодействия. Получены спектры поглощения исследуемых комплексов при разных концентрациях ДНК, и по данным этих спектров вычислены параметры связывания (Kb, n) порфиринов с ДНК при двух значениях ионной силы раствора. Показано, что места для связывания порфиринов становятся менее доступны при более высоком значении ионной силы раствора. Наблюдаются также увеличение температуры плавления ДНК в присутствии метал-содержащего порфирина, а также уменьшение стабилизирующего эффекта порфиринов при увеличении ионной силы раствора. In this work, according to the data obtained from the induced circular dichroism spectra, it were revealed the studied porphyrin binds to DNA by the intercalation method and its Zncontaining analogue by the external ordered interaction. The absorption spectra of the studied complexes were obtained at different DNA concentrations, and the binding parameters (Kb, n) of porphyrins with DNA were calculated from the data from these spectra at two values of the ionic strength of the solution. It is shown that sites for binding porphyrins become less accessible at a higher ionic strength of the solution. An increase in the melting temperature of DNA in the presence of a metal-containing porphyrin is also observed, as well as a decrease in the stabilizing effect of porphyrins with an increase in the ionic strength of the solution.
{"title":"Спектральное исследование связывания TMetAlPyP3 и ZnTMetAlPyP3 порфиринов с ДНК","authors":"Лусине Рафиковна Алоян, Арцвик Артуровна Аветисян","doi":"10.54503/0002-3035-2023-58.1-137","DOIUrl":"https://doi.org/10.54503/0002-3035-2023-58.1-137","url":null,"abstract":"Из полученных индуцированных спектров кругового дихроизма выявлено, что исследуемый порфирин связывается с ДНК методом интеркаляции, а\u0000его Zn-содержащий аналог методом внешнего упорядоченного взаимодействия.\u0000Получены спектры поглощения исследуемых комплексов при разных концентрациях ДНК, и по данным этих спектров вычислены параметры связывания (Kb, n)\u0000порфиринов с ДНК при двух значениях ионной силы раствора. Показано, что места для связывания порфиринов становятся менее доступны при более высоком\u0000значении ионной силы раствора. Наблюдаются также увеличение температуры\u0000плавления ДНК в присутствии метал-содержащего порфирина, а также уменьшение стабилизирующего эффекта порфиринов при увеличении ионной силы раствора. \u0000In this work, according to the data obtained from the induced circular dichroism spectra,\u0000it were revealed the studied porphyrin binds to DNA by the intercalation method and its Zncontaining analogue by the external ordered interaction. The absorption spectra of the studied\u0000complexes were obtained at different DNA concentrations, and the binding parameters (Kb, n)\u0000of porphyrins with DNA were calculated from the data from these spectra at two values of the\u0000ionic strength of the solution. It is shown that sites for binding porphyrins become less accessible\u0000at a higher ionic strength of the solution. An increase in the melting temperature of DNA in the\u0000presence of a metal-containing porphyrin is also observed, as well as a decrease in the stabilizing\u0000effect of porphyrins with an increase in the ionic strength of the solution.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78512549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-03DOI: 10.54503/0002-3035-2023-58.1-94
М. С. Алексанян, Г. А. Шахатуни, Э. А. Хачатурян, Г. Э. Шахназарян, А. Г. Саюнц, А. Р. Оганесян, Д. А. Кананов
Изготовлен сенсор для обнаружения паров ацетона на основе полученного методом гидротермального синтеза нанокомпозитного материала многостенные углеродные нанотрубки/оксид олова (МСУНТ/SnO2). Исследовалась чувствительность сенсора МСУНТ/SnO2 к воздействию паров ацетона в области рабочих температур от комнатной до 300C. Газочувствительные характеристики сенсора МСУНТ/SnO2 были исследованы при наличии разных концентраций (от 400 ppb до 20 ppm) паров ацетона в воздухе при рабочей температуре 250C. При этой же температуре исследованы импедансные характеристики сенсора МСУНТ/SnO2 как до, так и после воздействия паров ацетона. Предложена эквивалентная электрическая цепь для исследуемой сенсорной структуры. Представленные результаты свидетельствуют о том, что структура МСУНТ/SnO2 может быть использована как сенсор для обнаружения очень низких концентраций ацетона. A sensor for the detection of acetone vapors based on the nanocomposite multi–walled carbon nanotubes/tin oxide (MWCNT/SnO2) material was manufactured by the hydrothermal synthesis method. The response of the MWCNT/SnO2 sensor toward acetone vapors from room temperature to 300℃ was investigated. The gas sensing characteristics of the MWCNT/SnO2 sensor were investigated in the presence of different concentrations of acetone vapors (400 ppb– 20 ppm) at 250C. At the same temperature, the impedance characteristics of the MWCNT/SnO2 sensor were investigated both with and without acetone vapors. An equivalent electrical circuit for the MWCNT/SnO2 sensor structure was proposed. The presented results indicate that the MWCNT/SnO2 structure can be used to detect very low concentrations of acetone.
它是一种传感器，用来检测丙酮蒸汽，基于纳米复合材料的热液合成。исследоваласьчувствительн传感器МСУНТ/ SnO2影响几个丙酮областирабоч温度从室温到300C。газочувствительнхарактеристикисенсорМСУНТ/ SnO2探索以及不同浓度(от400 ppb高达20 ppm)几个丙酮空气温度工人250C。同样的温度也被用来测试丙酮蒸汽前后传感器/SnO2的阻抗特征。为研究感官结构提供等效的电路。结果表明，msunt /SnO2结构可以作为传感器来检测非常低的丙酮浓度。在nanocomposite上使用的传感器是由hydrothersynthesis提供的。The response of The MWCNT / SnO2 sensor to acetone 300℃was investigated vapors from roomtemperature to。The gas感知characteristics of The MWCNT压缩/ SnO2sensor were investigated in The奥迪of different concentrations of acetone vapors (400 ppm) 20日ppb at 250C。在same temperature上，在theMWCNT/SnO2 sensor上，没有一个动作。MWCNT/SnO2 sensor structure是一个预设的。MWCNT/SnO2 structure可以被分配到detect的处理。
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Pub Date : 2023-03-03DOI: 10.54503/0002-3035-2023-58.1-128
М. К. Балян
В первой части данной работы с помощью найденной векторной функции Грина электромагнитное поле в произвольным образом выбранном объеме представлено в векторной форме с помощью поверхностных и объемных интегралов, причем поверхностные интегралы описывают дифракцию поля, создаваемого внешними к объему зарядами, а объемные интегралы описывают поля, создаваемые зарядами, движущимися внутри объема. Для функции Грина была использована одна из двух найденных форм. В этой работе получены выражения для электромагнитного поля с использованием второй формы найденной функции Грина. При использовании второй формы векторной функции Грина поля зарядов, движущихся внутри объема, выражаются через обобщенный вектор Герца. Полученные в этой работе выражения имеют свои преимущества для определения полей в выбранном объеме. In the first part of this work, using the found vector Green's function, the electromagnetic fields in an arbitrary chosen volume are presented in vector form using surface and volume integrals, at that the surface integrals describe the diffraction of the field of charges external to the volume, and the volume integrals describe the fields of the charges, moving within the volume. For the Green's function, one of the two found forms was used. In this work, expressions for the electromagnetic fields are obtained using the second form of the found Green's function. When using the second form of the vector Green's function, the fields of charges moving inside the volume are expressed in terms of the generalized Hertz vector. The expressions obtained in this work have their advantages for determining the fields in a selected volume.
在这项工作的第一部分，通过随机选择的矢量函数，电磁场以矢量积分的形式呈现，表面积分描述了磁场的衍射，由外向电荷产生，而体积积分描述了电荷在体积内运动的场。格林函数是发现的两种形式之一。在这项工作中，使用第二种形式的函数，产生了电磁场的表达式。当使用绿色电荷场的第二种向量函数时，它们通过一个通用的赫兹向量表示。在这项工作中获得的表达式有其定义所选择数量的字段的优势。In the first part of this work using the found vector Green ' s函数theelectromagnetic fields In an arbitrary chosen volume are surfaceand volume立体presented In vector form integrals, at that the surface integrals describe the diffraction of the field of chargesexternal to the volume and the volume integrals describe the fields of the movingwithin the volume负载。为了格林的命运，两个foms中的一个是used。在这篇文章中，电子菲尔兹的快讯是关于基金会的第二种形式。当使用第二种形式的绿色function时，菲尔兹·奥弗查格斯的内部动力是赫兹·维瑟的通用平台。在这篇文章中，“特快专车”被要求在selectedvolume中删除文件。
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