Optical polarization response at gold nanosheet edges probed by scanning near-field optical microscopy Project supported by the National Key Basic Research Program of China (Grant No. 2013CB934004) and the Fundamental Research Funds for the Central Universities, China (Grant No. YWF-13-D2-XX-14). |
(color online) (a) AFM topographic image of a triangular gold nanosheet with a size of ∼ 10 μm. (b) Cross-section profile extracted from the line AA′ marked in panel (a), showing the height of the nanosheet. |