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The Performance of Graphene-Enhanced THz Grating: Impact of the Gold Layer Imperfectnessстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
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: 1 апреля 2022 г.
- Авторы: Lamberti Patrizia, Mura Monica La, Tucci Vincenzo, Nkyalu Erick, Khan Ali, Yakovleva Marina, Valynets Nadzeya, Paddubskaya Alesia, Saushin Aleksandr, Vanyukov Viatcheslav, Baah Marian, Urbanowicz Andrzej, Svirko Yuri, Kuzhir Polina
- Журнал: Materials
- Том: 15
- Номер: 3
- Год издания: 2022
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 786
- DOI: 10.3390/ma15030786
- Аннотация: We report the performance of a graphene-enhanced THz grating fabricated by depositing a gold layer on the femtosecond micromachined SiO2 substrate. The morphology of the gold plated patterned substrate was studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM), while the quality of the chemical vapor deposition (CVD) graphene was evaluated by Raman spectroscopy. The electromagnetic (EM) response of the metasurface comprising the graphene sheet and the gold plated substrate was studied by THz time domain spectroscopy in the 100 GHz–1 THz frequency range. We employed the finite elements method (FEM) to model the metasurface EM response by adjusting the ac conductivity of the gold layer covering the patterned SiO2 substrate to reproduce the measured transmission/reflection spectra. The results of the numerical simulation reveal the impact of the imperfectness of the gold layer on the performance of the THz metasurface. The experimental results are well described in terms of the Drude–Smith model of metal conductivity that takes into account the anisotropic scattering of the carriers in thin metal films.
- Добавил в систему: Саушин Александр Сергеевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Lamberti_et_al._-_The_Performance_of_Graphene-Enhanced_THz_… | 2,3 МБ | 31 марта 2022 [zeroeater] |