Transparent conducting oxides for active hybrid metamaterial devices
Transparent conducting oxides for active hybrid metamaterial devices
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DOI：
10.1088/2040-8978/14/11/114007
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发表时间：
2012-11-01
影响因子：
2.1
通讯作者：
Muskens, Otto L.
中科院分区：
文献类型：
--
作者：
Abb, Martina;Sepulveda, Borja;Muskens, Otto L.
我们在这里提出了一个等离子体天线的组合非线性响应的研究透明导电氧化物混合物的超材料设备的激活。随机定位的金纳米盘二聚体组成的纳米天线层使用孔掩模光刻。纳米天线层覆盖有20 nm的透明导电氧化物（TCO）薄层。我们研究了原子层沉积铝掺杂氧化锌（AZO）旁边的铟锡氧化物（ITO）使用溅射镀膜生产的响应。我们表明，我们的研究结果与快速电子介导冷却的假设一致，由金纳米盘和TCO衬底之间的欧姆界面促进，这似乎是一种通用的机制，为有源超材料器件提供新的混合功能。
We present here a study of the combined nonlinear response of plasmonic antenna-transparent conducting oxide hybrids for activation of metamaterial devices. Nanoantenna layers consisting of randomly positioned gold nanodisk dimers are fabricated using hole-mask lithography. The nanoantenna layers are covered with a 20 nm thin layer of transparent conducting oxide (TCO). We investigate the response of atomic layer deposited aluminum-doped zinc oxide (AZO) next to indium-tin oxide (ITO) produced using sputter coating. We show that our results are in agreement with the hypothesis of fast electron-mediated cooling, facilitated by the Ohmic interface between the gold nanodisks and the TCO substrate, which appears a universal mechanism for providing a new hybrid functionality to active metamaterial devices.