Electromechanically tunable carbon nanofiber photonic crystal.
Electromechanically tunable carbon nanofiber photonic crystal.
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DOI：
10.1021/nl3035527
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发表时间：
2013-01
期刊：
影响因子：
10.8
通讯作者：
R. Rehammar;F. A. Ghavanini;R. Magnusson;J. Kinaret;P. Enoksson;H. Arwin;E. Campbell
中科院分区：
文献类型：
--
作者：
R. Rehammar;F. A. Ghavanini;R. Magnusson;J. Kinaret;P. Enoksson;H. Arwin;E. Campbell
我们展示了一种由垂直排列的碳纳米纤维构成的电可调谐2D光子晶体阵列。通过在直接生长在金属电极上的相邻碳纳米纤维对之间施加电压来驱动纳米纤维，从而动态地改变光子晶格的形状因数。用光学衍射法和椭偏仪表征了光学性质的变化。实验结果与理论预测一致，并为利用标准纳米光刻技术结合等离子体CVD生长纳米纤维制备可在可见光下工作的快速可切换光子晶体提供了原理证明。
We demonstrate an electrically tunable 2D photonic crystal array constructed from vertically aligned carbon nanofibers. The nanofibers are actuated by applying a voltage between adjacent carbon nanofiber pairs grown directly on metal electrodes, thus dynamically changing the form factor of the photonic crystal lattice. The change in optical properties is characterized using optical diffraction and ellipsometry. The experimental results are shown to be in agreement with theoretical predictions and provide a proof-of-principle for rapidly switchable photonic crystals operating in the visible that can be fabricated using standard nanolithography techniques combined with plasma CVD growth of the nanofibers.