Armghan Ammar, Aliqab Khaled, Alsharari Meshari
Department of Electrical Engineering, College of Engineering, Jouf University, Sakaka, 72388, Saudi Arabia.
Sci Rep. 2025 Jul 1;15(1):21839. doi: 10.1038/s41598-025-06600-x.
Herein, a simplistic design of the nanostructured absorber with a fan-shaped unit cell employed in its construction. The design layout of the absorber inspires with a standard three layers configuration, with a top and bottom surfaces made of metals with an intermediate spacer sandwiched within them. The proposed fan-shaped absorber has the capability to attain high absorption bandwidth from 400 to 8000 nm with a single-layer and low-profile design architecture. The absorption mechanism is primarily attributed to localized surface plasmon resonances at the edges of the elliptical resonators. A detailed sensitivity analysis has been inspected to observe the impact of various design parameters of the absorber. This design presents the flexibility in simplifying the existing absorber design while utilizing simple and straightforward unit-cell of the metal Nickel. It also presents stable absorption performance even at oblique incidence angles, considering both (TE & TM) waves polarization. This kind of nanostructured absorber can have a possible application in solar photovoltaics and thermal emission.
在此，采用了一种具有扇形单元结构的纳米结构吸收体的简单设计。该吸收体的设计布局灵感来源于标准的三层结构，其顶部和底部表面由金属制成，中间夹有一个间隔层。所提出的扇形吸收体能够通过单层和低剖面设计架构实现400至8000纳米的高吸收带宽。吸收机制主要归因于椭圆形谐振器边缘处的局域表面等离子体共振。已经进行了详细的灵敏度分析，以观察吸收体各种设计参数的影响。这种设计在简化现有吸收体设计的同时，利用金属镍简单直接的单元结构展现出了灵活性。即使在斜入射角下，考虑到（TE和TM）波的极化，它也具有稳定的吸收性能。这种纳米结构吸收体在太阳能光伏和热发射方面可能具有应用前景。
