多光谱电磁屏蔽中$\text{ITO}$-${\text{In}_{{2}}{\text O}_{{3}}}$核壳纳米晶体光响应的数值研究

IF 1.8 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Nicola Curreli;Matteo Bruno Lodi;Michele Ghini;Nicolò Petrini;Andrea Buono;Maurizio Migliaccio;Alessandro Fanti;Ilka Kriegel;Giuseppe Mazzarella
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引用次数: 0

摘要

如今,在电子、医疗、军事和航空航天等广泛应用中,都需要保护设备免受不必要的多光谱电磁波影响的材料。然而,目前使用的屏蔽材料体积庞大,仅在有限的频率范围内有效工作。因此,相关科学界正在对纳米结构材料进行研究。在这一框架下,多光谱屏蔽纳米材料的设计必须辅以适当的数值模型,以处理非线性并有效预测其吸收光谱。在本研究中,研究了具有多光谱电磁屏蔽能力的金属氧化物纳米晶体的电磁响应。开发了一个数值框架来预测核壳纳米晶体的能带和电子密度分布,并评估其在不同波长下的光学响应。为此,使用有限元软件求解非线性泊松方程。数值模拟允许对$\mathbf{ITO}$-$\mathbf{In的光学响应进行建模_{2}O_{3} }$核壳纳米晶体,可以有效地应用于不同的纳米拓扑结构,以支持具有多光谱屏蔽能力的纳米材料的增强设计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical Study of the Optical Response of $\text{ITO}$-${\text{In}_{{2}}{\text O}_{{3}}}$ Core-Shell Nanocrystals for Multispectral Electromagnetic Shielding
Nowadays, materials to protect equipment from unwanted multispectral electromagnetic waves are needed in a broad range of applications including electronics, medical, military and aerospace. However, the shielding materials currently in use are bulky and work effectively only in a limited frequency range. Therefore, nanostructured materials are under investigation by the relevant scientific community. In this framework, the design of multispectral shielding nanomaterials must be supplemented with proper numerical models that allow dealing with non-linearities and being effective in predicting their absorption spectra. In this study, the electromagnetic response of metal-oxide nanocrystals with multispectral electromagnetic shielding capability has been investigated. A numerical framework was developed to predict energy bands and electron density profiles of a core-shell nanocrystal and to evaluate its optical response at different wavelengths. To this aim, a finite element method software is used to solve a non-linear Poisson's equation. The numerical simulations allowed to model the optical response of $\mathbf {ITO}$ - $\mathbf {In_{2}O_{3}}$ core-shell nanocrystals and can be effectively applied to different nanotopologies to support an enhanced design of nanomaterials with multispectral shielding capabilities.
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来源期刊
CiteScore
4.30
自引率
0.00%
发文量
27
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