模块化组装的元材料使用光梯度的模块化组装
Apurba Paul1, Alexander Volk2, Mohammad Hokmabadi1
1Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA.
Advanced materials (Deerfield Beach, Fla.)
|June 5, 2024
概括
这项试点研究展示了使用光梯度力和模块化结构组装光子元材料 (PMs). 该方法成功地从纳米粒子中产生了PM,通过反射光谱学揭示了共振峰值.
科学领域:
- 纳米技术纳米技术
- 光子学 是一个光子学.
- 材料科学 材料科学 材料科学
背景情况:
- 光子超材料 (PMs) 具有独特的光操纵特性.
- 从纳米粒子 (NP) 组装复杂的3D结构仍然是一个挑战.
- 控制纳米粒子排列对于所需的光学性能至关重要.
研究的目的:
- 测试使用光梯度力组装光子元材料的可行性.
- 为了研究用介电纳米粒子构建的PM的光学特性.
- 评估组装缺陷对材料性能的影响.
主要方法:
- 利用来自1D静电波光学陷的光梯度力来操纵单分散纳米粒子 (30-500nm半径).
- 采用了模块化施工策略,将纳米粒子组装成voxels,然后在水凝支架上将voxels合成3D结构.
- 分析了近红外性能,使用视角,波长和偏振依赖的反射光谱在聚烯和鲁 PMs.
主要成果:
- 通过使用聚乙烯和鲁纳米颗粒成功组装了异质的voxel和3D光子元材料.
- 反射光谱学揭示了组装的颗粒物的交叉极化光谱中的共振峰值.
- 尽管存在结构缺陷,但在聚乙烯 (对称) 和鲁 (不对称,可能是法诺共振) 阵列中观察到不同的光谱线形状.
结论:
- 光梯度力提供了一种可行的方法,通过模块化结构组装光子元材料.
- 组装的PM表现出光学共振,证明了量身定制的光子特性潜力.
- 结构上的缺陷影响了光谱特征,突出了PM制造未来改进的领域.
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