Refractive index of ionic liquids under electric field: Methyl propyl imidazole iodide and several derivatives

Zhou Ji¹, Dong Shi-Kui², He Zhi-Hong², Zhang Yan-Hu^{3, †}

Variations of refractive index with electric field for three types of ionic liquids at different wavelengths: (a) 546 nm, (b) 1013 nm, and (c) 1529 nm.