Simple Method for Measuring the Refractive Index of a Liquid

Physical and Technical Aspects of Measurements of Ordinary and Extraordinary Refraction Indices and Birefringence of Nematic Liquid Crystals

“…Absolute inaccuracy in determining n e and n o is around ±(1 ÷ 5) × 10 −3 . The advantages of this method are absence of bound for measured refractive index [34][35][36][37][38][39] and easiness of determining dispersive characteristics. The disadvantages are difficulty in thermal stabilisation of the prism and invisibility of texture of nematic liquid crystal during measurements.…”

An Experimental Method for Determination of the Refractive Index of Liquid Samples Using Michelson Interferometer

“…However, two measurements must be made: with the cell full of liquid and with empty one. Other methods require measurement of the critical angle at the boundary between the liquid and the cell containing it [4][5][6], and then an accurate value of the refractive index of the cell walls at the laser wavelength is needed.…”

Optical properties of a mesogen by image analysis

“…These optical properties provide important information about molecular ordering, molecular dynamics and the nature of molecular interactions. There are a number of techniques available for studying the temperature dependence of the optical properties of liquid crystals, including trinocular polarising microscope techniques [4], the Z-Scan technique [5], techniques involving study of the continuous wavelength of the ultraviolet and infrared spectral regions [6], the Abbe refractometer [7], the wedge technique [8,9], the hollow prism method [10] and the FabryPérot interferometer [11]. These methods each require different experimental setups in order to investigate the optical properties of liquid crystals.…”