Počet záznamů: 1
Sensitivity of compositional measurement of high-pressure fluid mixtures using microcantilever frequency response
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SYSNO ASEP 0491280 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Sensitivity of compositional measurement of high-pressure fluid mixtures using microcantilever frequency response Tvůrce(i) Baloch, S.K. (TR)
Jonáš, Alexandr (UPT-D) RID, SAI, ORCID
Kiraz, A. (TR)
Alaca, B.E. (TR)
Erkey, C. (TR)Celkový počet autorů 5 Zdroj.dok. Sensors and Actuators A - Physical. - : Elsevier - ISSN 0924-4247
Roč. 278, AUG (2018), s. 111-126Poč.str. 16 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova microcantilever ; sensitivity ; high pressure ; ethanol ; carbon dioxide ; frequency response Vědní obor RIV BH - Optika, masery a lasery Obor OECD Fluids and plasma physics (including surface physics) Institucionální podpora UPT-D - RVO:68081731 UT WOS 000437818200013 EID SCOPUS 85047510344 DOI 10.1016/j.sna.2018.05.025 Anotace Frequency response of an oscillating microcantilever immersed in a fluid mixture can be used to determine the composition of the mixture over a wide range of temperatures and pressures. The Limit of Detection (LOD) in such measurements carried out at high pressures is of great interest for monitoring technologically important processes such as supercritical drying of aerogels. We studied compositional measurement sensitivity of cantilevers defined as the derivative of the cantilever resonant frequency or quality factor with respect to the fluid mixture composition. On the basis of Sader's model of hydrodynamic interaction of an oscillating immersed cantilever with the surrounding fluid, we derived analytical expressions for the sensitivity that were found to be complex functions of the density and viscosity of the mixture as well as the length, width, thickness, and density of the cantilever. We measured the frequency response of cantilevers immersed in ethanol-CO2 mixtures containing 0 0.04 wt fraction of ethanol at 318 K and within the pressure range 10-21 MPa. Using the measured resonant frequency and quality factor together with previously published density and viscosity data for ethanol-CO2 mixtures of various compositions, we calculated the sensitivity at each pressure and temperature and determined the LOD of the measurement. In particular, with our current setup, the LOD ranged from 0.0009 to 0.0071 wt fraction of ethanol in the mixture in the pressure range 10-21 MPa for a 150 mu m long cantilever. Our results convincingly illustrate the potential of miniature cantilever-based probes for fast and sensitive in-situ detection of the composition of fluid mixtures in practical technological processes carried out at high pressures. (C) 2018 Elsevier B.V. All rights reserved. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2019
Počet záznamů: 1