title: A simple method to measure critical angles for high-sensitivity differential refractometry.
abstract: A total internal reflection-based differencial refractometer, capable of measuring the real and imaginary parts of the complex refractive index in real time, is presented. The device takes advantage of the phase difference acquired by s- and p-polarized light to generate an easily detectable minimum at the reflected profile. The method allows to sensitively measuring transparent and turbid liquid samples.
authors.affiliation: Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil. zilio@ifsc.usp.br
authors.forename: S C
authors.initials: SC
authors.lastname: Zilio
mesh_terms: D000818:Animals; D002138:Calibration; D006017:Glycolipids / Q000737:chemistry; D006023:Glycoproteins / Q000737:chemistry; D066292:Lipid Droplets; D008892:Milk / Q000737:chemistry; D008962:Models, Theoretical; D009391:Nephelometry and Turbidimetry / Q000295:instrumentation* / Q000379:methods*; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*; D012680:Sensitivity and Specificity
chemical_list: D006017:Glycolipids; D006023:Glycoproteins; C110367:milk fat globule