Basnet Gobind, Panta Krishna R, Thapa Prem S, Flanders Bret N
Department of Physics, Kansas State University , Manhattan, Kansas 66506, USA.
Imaging and Analytical Microscopy Laboratory, University of Kansas , Lawrence, Kansas 66045, USA.
Appl Phys Lett. 2017 Feb 13;110(7):073106. doi: 10.1063/1.4976027. Epub 2017 Feb 14.
This paper describes the electrochemical growth of branchless gold nanoribbons with ∼40 nm × ∼300 nm cross sections and >100 m lengths (giving length-to-thickness aspect ratios of >10). These structures are useful for opto-electronic studies and as nanoscale electrodes. The 0.75-1.0 V voltage amplitude range is optimal for branchless ribbon growth. Reduced amplitudes induce no growth, possibly due to reversible redox chemistry of gold at reduced amplitudes, whereas elevated amplitudes, or excess electrical noise, induce significant side-branching. The inter-relatedness of voltage-amplitude, noise, and side-branching in electrochemical nanoribbon growth is demonstrated.
本文描述了具有约40纳米×约300纳米横截面且长度大于100微米（长宽比大于10）的无分支金纳米带的电化学生长。这些结构可用于光电研究以及作为纳米级电极。0.75 - 1.0伏的电压幅度范围是无分支带生长的最佳范围。幅度降低不会诱导生长，这可能是由于在较低幅度下金的可逆氧化还原化学作用，而幅度升高或过多的电噪声会导致显著的侧支生长。文中展示了电化学纳米带生长中电压幅度、噪声和侧支生长之间的相互关系。
