Quantifying the Diffusion of a Fluid through Membranes by RemoteDetection MRI Page: 2 of 21
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Abstract:
We present a method to measure self-diffusion across membranes without the need for
concentration or pressure gradients. Hyperpolarized xenon in combination with remote
detection of NMR allows the measurement of membrane permeation, even in the gas
phase. The resulting images allow quantification of the amount of fluid diffused through
the membrane, and represent an alternative, potentially more precise way of measuring a
membrane diffusion coefficient. The use of remote detection of NMR allows for non-
invasive signal encoding coupled to sensitive detection, making this approach ideal for
the study of diffusion in intact devices such as fuel cells or separation systems.2
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Telkki, Ville-Veikko; Hilty, Christian; Garcia, Sandra; Harel,Elad & Pines, Alexander. Quantifying the Diffusion of a Fluid through Membranes by RemoteDetection MRI, article, October 24, 2006; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc894488/m1/2/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.