2026-04-10T14:20:00Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/69652025-04-16T06:15:36Zcom_20.500.11984_473col_20.500.11984_478

00925njm 22002777a 4500 dc Mialdun, Aliaksandr author Yasnou, V. author Shevtsova, Valentina author Königer, A. author Kohler, W. author Alonso de Mezquia, David author Bou-Ali, M. Mounir author 2012 We report on the measurement of diffusion (D), thermodiffusion (DT), and Soret (ST) coefficients in water-isopropanol mixtures by three different instrumental techniques: thermogravitational column in combination with sliding symmetric tubes, optical beam deflection, and optical digital interferometry. All the coefficients have been measured over the full concentration range. Results from different instruments are in excellent agreement over a broad overlapping composition (water mass fraction) range 0.2 < c < 0.7, providing new reliable benchmark data. Comparison with microgravity measurements (SODI/IVIDIL (Selected Optical Diagnostic Instrument/Influence of VIbration on DIffusion in Liquids)) onboard the International Space Station and with literature data (where available) generally gives a good agreement. Contrary to theoretical predictions and previous experimental expectations we have not observed a second sign change of ST at low water concentrations. 0021-9606 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=83209 https://hdl.handle.net/20.500.11984/6965 Thermodynamics Thermophoresis space stations interferometry Microgravity Materials properties optical properties Optical beam deflection Thermal effects A comprehensive study of diffusion, thermodiffusion, and Soret coefficients of water-isopropanol mixtures