Ito Hiroki, Iio Atsushi, Tokuhara Katsutoshi, Sakaue Hiroyuki, Kadoya Yutaka, Suzuki Hitoshi
Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, 739-8530, Japan.
Nanoscale Res Lett. 2017 Dec;12(1):301. doi: 10.1186/s11671-017-2056-2. Epub 2017 Apr 26.
Quantum dots (QDs) were immobilized on an ultra-flat Au surface by using amide binding between the carboxyl groups on the QDs and the amino groups of the self-assembled monolayer on the surface. The number density of the QDs estimated by atomic force microscopy (AFM) agreed with the quantity of QDs estimated by X-ray photoelectron spectroscopy and fluorescence microscopy. QDs were also immobilized on dot patterns fabricated by e-beam lithography. AFM was able to identify clusters of just a few QDs on the dot patterns, whose minimum designed size was 50 nm × 50 nm per dot.
通过量子点（QDs）上的羧基与表面自组装单分子层的氨基之间的酰胺键合，将量子点固定在超平坦的金表面上。通过原子力显微镜（AFM）估计的量子点数量密度与通过X射线光电子能谱和荧光显微镜估计的量子点数量一致。量子点也被固定在通过电子束光刻制造的点图案上。原子力显微镜能够识别点图案上仅几个量子点的簇，其每个点的最小设计尺寸为50 nm×50 nm。
