Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
833549 | Materials & Design (1980-2015) | 2007 | 5 Pages |
Abstract
This paper reports a scanning electron microscopy (SEM) investigation of polystyrene artificial opal achieved through self-assembly of monodisperse polystyrene nanospheres with a diameter of 250 nm from colloidal suspension after being ambient dried. A detailed analysis of the SEM images verifies that the face-centered cubic (fcc) phase is the most stable one for the polystyrene opal prepared. This finding provides a strong support for, by using polystyrene opal as template, fabricating a photonic crystal with inverse fcc structure of full band gap if the refractive index contrast is higher than 2.8 and the filling fraction of the high index materials is between 0.2 and 0.3.
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Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Hui Zhang, Ren-guan Duan, Fan Li, Qing Tang, Wen-chao Li,