Помощь      Поиск      Участники      Календарь      Новости
 Учебные Материалы      ВАЛтест     Фотогалерея Фотогалерея
 Правила форума      Виртуальные тренажеры      Мемуары


  Reply to this topicStart new topicStart Poll

> (2020) Large-scale, low-cost, broadband, tunable, perfect optical absorber based on PCM
Подписка на тему | Сообщить другу | Версия для печати
VAL
Дата 8.03.2020 20:54
Quote Post
Offline



Мэтр, проФАН любви... proFAN of love
*****

Профиль
Группа: Администраторы
Сообщений: 38172
Пользователь №: 1
Регистрация: 6.03.2004
(2020) Large-scale, low-cost, broadband and tunable perfect optical absorber based on phase change material
Источники:
- https://www.researchgate.net/publication/33...change_material
- January 2020, Nanoscale 12(9) - Nanoscale, 2020,12, 5374-5379
- https://pubs.rsc.org/en/content/articleland...#33;divAbstract

doi: 10.1039/C9NR07602F

Авторы: Nanli Mou, Xiaolong Liu, Tao Wei, Hongxing Dong, Qiong He, Lei Zhou, Yaqiang Zhang, Long Zhang and Shulin Sun

QUOTE
Abstract

Metamaterial-based electromagnetic absorbers have attracted much attention recently, but most previous realizations suffer from issues of narrow bandwidth, time-consuming and high-cost fabrication methods, and/or fixed functionalities, and so are unfavorable for practical applications. Here, we demonstrate experimentally a large-scale, broadband, polarization-independent, and tunable metamaterial absorber, which works for both visible and near-infrared light. A lithography-free and low-cost method was utilized to fabricate a centimeter-sized metamaterial sample in a metal–insulator–metal (MIM) configuration with nano-scale precision, in which a phase-change material, Ge2Sb2Te5 (GST), was adopted as the insulating spacer of the MIM structure.

With two different resonance mechanisms working together, the proposed device was shown to exhibit high absorptivity (>80%) within a broad wavelength band (480–1020 nm).

By thermally tuning the phase state of the GST layer, we can dramatically enlarge the working bandwidth of the metamaterial absorber by shifting one absorption peak by about 470 nm. These findings may stimulate many potential applications in, for example, solar cells, energy harvesting, smart sensing/imaging, and color printing.


Присоединённое изображение
Присоединённое изображение


--------------------
www.valinfo.ru
Всегда... Always....
Quod licet jovi, non licet bovi!
PMEmail PosterUsers Website
Top
1 Пользователей читают эту тему (1 Гостей и 0 Скрытых Пользователей)
0 Пользователей:
« Предыдущая тема | Солнечные элементы и солнечная энергетика | Следующая тема »

Topic Options Reply to this topicStart new topicStart Poll

 

Powered by Invision Power Board(U) v1.3 Final © 2003  IPS, Inc.
Установка, модификация и поддержка:
Barsum | 1px Design Group & Xac | OппаRU форум