jamtJournal of Advanced Materials and TechnologiesJournal of Advanced Materials and Technologies2782-21922782-2206ФГБОУ ВО «ТГТУ»10.17277/jamt-2025-10-04-321-328jamt-79Research ArticleНаноструктурированные наноматериалы и наноустройстваNanostructured, nanoscale materials and nanodevicesМетод устранения емкостной и шумовой составляющих из регистрируемого сигнала в полевом эмиссионном экспериментеA method for eliminating capacitive and noise components from a recorded signal in a field emission experimenthttps://orcid.org/0009-0005-5585-418XСоковС. А.SokovS. A.

Соков Сергей Александрович, лаборант

ул. Политехническая, 26, Санкт-Петербург, 194021, Российская Федерация

Sergei A. Sokov, Laboratory Assistant

26, Politekhnicheskaya St., Saint Petersburg, 194021, Russian Federation

sokovclan@gmail.comhttps://orcid.org/0009-0008-3238-1668НечаевМ. С.NechaevM. S.

Нечаев Михаил Сергеевич, лаборант

ул. Политехническая, 26, Санкт-Петербург, 194021, Российская Федерация

Mikhail S. Nechaev, Laboratory Assistant

26, Politekhnicheskaya St., Saint Petersburg, 194021, Russian Federation

msnechaev@stud.etu.ruhttps://orcid.org/0009-0003-7975-3151МутыгуллинБ. Э.MutygullinB E.

Мутыгуллин Борис Эдуардович, лаборант

ул. Политехническая, 26, Санкт-Петербург, 194021, Российская Федерация

Boris E. Mutygullin, Laboratory Assistant

26, Politekhnicheskaya St., Saint Petersburg, 194021, Russian Federation

borlin93@gmail.comhttps://orcid.org/0000-0002-6073-6808КолоськоА. Г.KoloskoA. G.

Колосько Анатолий Григорьевич, кандидат физико-математических наук, старший научный сотрудник

ул. Политехническая, 26, Санкт-Петербург, 194021, Российская Федерация

Anatoly G. Kolosko, Cand. Sc. (Phys. and Math.), Senior Researcher

26, Politekhnicheskaya St., Saint Petersburg, 194021, Russian Federation

agkolosko@mail.ruhttps://orcid.org/0000-0001-5325-2226ФилипповС. В.FilippovS. V.

Филиппов Сергей Владимирович, кандидат физико-математических наук, старший научный сотрудник

ул. Политехническая, 26, Санкт-Петербург, 194021, Российская Федерация

Sergei V. Filippov, Cand. Sc. (Phys. and Math.), SeniorResearcher

26, Politekhnicheskaya St., Saint Petersburg, 194021, Russian Federation

f_s_v@list.ruhttps://orcid.org/0000-0003-2226-6304ПоповЕ. О.PopovE. O.

Попов Евгений Олегович, доктор физико-математических наук, ведущий научный сотрудник

ул. Политехническая, 26, Санкт-Петербург, 194021, Российская Федерация

Eugeni O. Popov, D. Sc. (Phys. and Math.), Leading Researcher

26, Politekhnicheskaya St., Saint Petersburg, 194021, Russian Federation

Физико-технический институт им. А. Ф. Иоффе РАНРоссияIoffe InstituteRussian Federation202524022026104321328Copyright © Соков С.А., Нечаев М.С., Мутыгуллин Б.Э., Колосько А.Г., Филиппов С.В., Попов Е.О., 20262026Соков С.А., Нечаев М.С., Мутыгуллин Б.Э., Колосько А.Г., Филиппов С.В., Попов Е.О.Sokov S.A., Nechaev M.S., Mutygullin B.E., Kolosko A.G., Filippov S.V., Popov E.O.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://jamt.elpub.ru/jour/article/view/79

Представлены новые способы устранения случайных и систематических ошибок, возникающих при регистрации вольтамперных характеристик полевых катодов в режиме быстрого сканирования высоким напряжением. Методы реализованы в среде графического программирования LabVIEW и интегрированы в программное обеспечение экспериментальной установки, которая регистрирует и обрабатывает данные полевой эмиссии в режиме реального времени. Разработанная программа состоит из трех модулей. Первый устраняет влияние постоянной наводки на сигналы тока и напряжения. Второй модуль устраняет систематическую ошибку синусоидальной формы, связанную с наличием емкости в измерительной цепи. Третий модуль уменьшает влияние на сигнал шумов, связанных с измерительным оборудованием, а также флуктуациями эмиссионной активности катода. Результирующая вольтамперная характеристика подвергается обработке в полулогарифмических координатах с применением уравнения Мерфи–Гуда. В результате обработки получаются значения эффективных параметров. Тестовый эксперимент был проведен с полевым катодом на основе многостенных углеродных нанотрубок, выращенных химическим осаждением из газовой фазы с использованием плазмы (метод PECVD). Методика также применялась для корректной оценки эмиссионных свойств катодов различного типа: на основе углеродных наночастиц, регулярных матриц острий и одноострийных катодов.  

The paper presents new methods for eliminating random and systematic errors that occur when registering the current-voltage characteristics of field cathodes in the high-voltage fast scanning mode. The methods are implemented in the LabVIEW graphical programming environment and integrated into the experimental installation software, which registers and processes field emission data in real time. The developed program consists of three modules. The first one eliminates the effect of constant interference on current and voltage signals. The second module eliminates the systematic sinusoidal error associated with the presence of capacitance in the measuring circuit. The third module reduces the effect on the signal of noise associated with measuring equipment, as well as fluctuations in the emission activity of the cathode. The resulting current-voltage characteristic is processed in semi-logarithmic coordinates using the Murphy-Good equation. As a result of the processing, the values of the effective parameters are obtained. A test experiment was conducted with a field cathode based on multi-walled carbon nanotubes grown by the plasma-assisted chemical vapor deposition (PECVD-method). The technique was also used to accurately evaluate the emission properties of various types of cathodes: those based on carbon nanoparticles, regular matrix tips, and single-pointed cathodes.  

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The authors declare that there are no conflicts of interest present.