Department of Electrical Engineering, ‡Department of Chemistry, §Center for Nanotechnology, Materials Sciences, and Microsystems, and ∥Frontier Research Center on Fundamental and Applied Science of Matters, National Tsing Hua University , Hsinchu 30013, Taiwan, R.O.C.
Nano Lett. 2013 Sep 11;13(9):4118-22. doi: 10.1021/nl4016254. Epub 2013 Aug 20.
We report the transport and trapping behavior of 100 and 500 nm diameter nanospheres in a plasmon-enhanced two-dimensional optical lattice. An optical potential is created by a two-dimensional square lattice of gold nanostructures, illuminated by a Gaussian beam to excite plasmon resonance. The nanoparticles can be guided, trapped, and arranged using this optical potential. Stacking of 500 nm nanospheres into a predominantly hexagonal closed pack crystalline structure under such a potential is also reported.
我们报告了 100nm 和 500nm 直径纳米球在等离子体增强二维光学晶格中的输运和捕获行为。通过二维正方形金纳米结构阵列照射高斯光束来激发等离子体共振，产生光学势。可以使用这种光学势来引导、捕获和排列纳米颗粒。还报告了在这种势下将 500nm 纳米球堆叠成主要为六方密堆积晶体结构。
