Germain V, Brioude A, Ingert D, Pileni M P
Laboratoire LM2N, Université P. et M. Curie (Paris VI), Boite Postale 52, 4 Place Jussieu, F-752 31 Paris Cedex 05, France.
J Chem Phys. 2005 Mar 22;122(12):124707. doi: 10.1063/1.1865993.
Silver nanodisks, having two different sizes, and spherical particles are synthesized by soft chemistry. By using centrifugation, nanodisks are mainly selected. The experimental absorption spectra of these nanodisks with different sizes are compared to those simulated using the discrete dipole approximation method. For small nanodisk sizes, the nanodisk shape is neglected and the simulated spectra closest to the experiments are obtained by assuming a spheroidal particle. Conversely, for larger nanodisks, the precise geometries represented by snip and aspect ratio are needed for good agreement between experiments and simulations.
通过软化学合成了具有两种不同尺寸的银纳米盘和球形颗粒。利用离心法主要筛选出纳米盘。将这些不同尺寸纳米盘的实验吸收光谱与使用离散偶极近似法模拟得到的光谱进行比较。对于小尺寸的纳米盘，忽略其纳米盘形状，通过假设为椭球形颗粒来获得最接近实验的模拟光谱。相反，对于较大尺寸的纳米盘，为使实验和模拟结果吻合良好，需要由截短比和纵横比表示的精确几何形状。
