Optical Properties of Silica Colloids Suspensions in Electric Field

Abstract:

We studied the optical properties of silica colloids suspensions made of nanospheres having an average diameter of 50, 90, 120, and 300 nm in electric field. It was illustrated that a colloidal suspension with a particle size of 120 nm shows a dramatic change of the reflection peak position in response to the applied potential. With the increase of the concentration, the position of peak maximum slightly blue-shifted and the reflection intensity slightly increased. The impact of solvents on optical properties of silica colloids suspensions was studied. It was demonstrated that the position of peak maximum has a dramatic change only in propylene carbonate; there were no marked changes in ethylene glycol and water. The intensity of reflection peak was strongest in water. We analyze the mechanism and attribute this phenomenon to the hydrogen-bonding ability of the solvents.

• Periodical: Advanced Materials Research (Volume 924)
• Pages: 158-165
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.924.158
• Online since: April 2014
• Authors: Yu Xia Luo, Jian Fei Zhang, Ai Hua Sun*, Cheng Yi Chu, Shi Zhou, Jian Jun Guo, Gao Jie Xu
• Keywords: Electric Field, Photonic Properties, Silica Colloids Suspensions

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