writer：Jianfei Zhang, Aihua Sun*, Xuanxuan Qiao, Chengyi Chu, Chongyang Wang, Tao Chen
keywords：nanoparticles, structural color, suspensions, core-shell, electric field
source：期刊
specific source：Materials Research Express 1 (2014) 045037
Issue time：2014年
The photonic properties of Fe3O4@C and Fe3O4 colloidal suspensions in an
external electric field have been investigated. Compared to Fe3O4, the Fe3O4@C
colloidal suspension has been found to have a wider tunability range of the
optical spectrum and a stronger electric response in low electric fields. Based on
the dielectric spectroscopy analysis of Fe3O4@C and Fe3O4 colloidal suspensions,
a dielectric loss model has been proposed to explain the significant effect
of the carbon shell on the electrically modulated photonic property of the
Fe3O4@C suspension.