Acta Photonica Sinica, Volume. 45, Issue 5, 516003(2016)
Preparation and Optical Properties of SiO2@Fe3O4@C Colloidal Nanoparticles
Highly dispersed SiO2@Fe3O4@C core-shell nanoparticles with controllable particle sizes were prepared. Under electric field, the optical properties of SiO2@Fe3O4@C nanoparticle suspensions of different size, different concentrations, different the solvent was studied, and the results show that the reflection spectrum of 150 nm SiO2@Fe3O4@C nanoparticles at a concentration of 10%(mass fraction) obtain the widest tunable range from 735 nm to 540 nm. With increasing concentration of nanoparticle suspension, the overall reflectance spectra blue shift. The solvent dependence of the electric field-responsive photonic crystals by dispersing 150 nm particles into different solvents was investigated, and the results show that the greater refractive index, the greater the reflection wavelength. The response time of the suspensions is 150 ms, and the suspensions have recovery after electric field disappeared.
Get Citation
Copy Citation Text
WANG Chong-yang, QIAO Xuan-xuan, SUN Ai-hua, GUO Jian-jun, ZHU Yue-jin, XU Gao-jie. Preparation and Optical Properties of SiO2@Fe3O4@C Colloidal Nanoparticles[J]. Acta Photonica Sinica, 2016, 45(5): 516003
Received: Dec. 22, 2015
Accepted: --
Published Online: Jun. 6, 2016
The Author Email: Chong-yang WANG (wangchongyang@nimte.ac.cn)