Lamson Thomas L, Khan Sahar, Wang Zhifei, Zhang Yun-Kai, Yu Yong, Chen Zhe-Sheng, Xu Huizhong
Department of Physics, St. John's University, Jamaica, NY 11439, USA.
Department of Biological Sciences, St. John's University, Jamaica, NY 11439, USA.
Opt Commun. 2018 Mar 15;411:53-58. doi: 10.1016/j.optcom.2017.10.070. Epub 2017 Nov 21.
We report the patterned synthesis of ZnO nanorod arrays of diameters between 50 nm and 130 nm and various spacings. This was achieved by patterning hole arrays in a polymethyl methacrylate layer with electron beam lithography, followed by chemical synthesis of ZnO nanorods in the patterned holes using the hydrothermal method. The fabrication of ZnO nanorod waveguide arrays is also demonstrated by embedding the nanorods in a silver film using the electroplating process. Optical transmission measurement through the nanorod waveguide arrays is performed and strong resonant transmission of visible light is observed. We have found the resonance shifts to a longer wavelength with increasing nanorod diameter. Furthermore, the resonance wavelength is independent of the nanowaveguide array period, indicating the observed resonant transmission is the effect of a single ZnO nanorod waveguide. These nanorod waveguides may be used in single-molecule imaging and sensing as a result of the nanoscopic profile of the light transmitted through the nanorods and the controlled locations of these nanoscale light sources.
我们报道了直径在50纳米至130纳米之间且具有不同间距的ZnO纳米棒阵列的图案化合成。这是通过电子束光刻在聚甲基丙烯酸甲酯层中图案化孔阵列，然后使用水热法在图案化的孔中化学合成ZnO纳米棒来实现的。通过电镀工艺将纳米棒嵌入银膜中，也展示了ZnO纳米棒波导阵列的制造。对通过纳米棒波导阵列的光传输进行了测量，并观察到可见光的强共振传输。我们发现随着纳米棒直径的增加，共振向更长波长移动。此外，共振波长与纳米波导阵列周期无关，这表明观察到的共振传输是单个ZnO纳米棒波导的效应。由于通过纳米棒传输的光的纳米级轮廓以及这些纳米级光源的可控位置，这些纳米棒波导可用于单分子成像和传感。
