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High-Frequency Heating of a Multiply Protonated Poly(ethylene oxide) Chain in a Vacuumстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 декабря 2020 г.
- Авторы: Dubrovskii S.A., Balabaev N.K.
- Журнал: Polymer Science, Series A
- Том: 62
- Номер: 5
- Год издания: 2020
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 578
- Последняя страница: 587
- DOI: 10.1134/s0965545x20050041
- Аннотация: Heating of a multiply protonated poly(ethylene oxide) chain in an intense high-frequency electric field in a vacuum is studied using molecular dynamics simulations. The rate of absorption of the field energy by the chain is determined at the field frequencies from 0.5 to 150 GHz. The absorption spectrum depends on the number of attached protons n, and also on the temperature of the chain. At low n and high temperatures, the spectrum consists of several distinct peaks with the most intense peak at a frequency of about 10 GHz. When n is large, the peaks are less pronounced and the energy absorption rate reaches a maximum at the lowest studied frequency.The effect of n on the energy absorption rate depends on the field frequency. While at low and high frequencies the energy absorption rate increases almost in proportion to n, near the main absorption peak it decreases.This indicates that there are two different mechanisms of the energy absorption. Firstly, the chain absorbs energy during resonant vibrations that occur at several frequencies. Secondly, the chain absorbs energy through a process that occurs over a wide frequency range and becomes more intense with decreasing frequency.
- Добавил в систему: Балабаев Николай Кириллович