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Updated: Apr 23, 2026

Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure
Published on: April 17, 2018
Micro-viscosity of liquid oil confined in colloidal fat crystal networks
1School of Environmental and Biological Engineering, Department of Food Science. Rutgers, The State University of New Jersey, 65 Dudley Rd., New Brunswick, NJ 08901, USA. rogers@aesop.rutgers.edu.
Abstract:
Molecular rotors may be utilized as non-invasive, non-disruptive and highly sensitive alternatives to conventional measures of bulk viscosity when the oil is entrained in a colloidal fat crystal network. Oil viscosity changes based on the molecular confinement of the oil, which is dependent on its molecular volume. Changes in micro-viscosity were not dependent on the solids content, but instead were strongly dependent on the box-counting fractal dimension in high-space filling colloidal fat crystal networks (i.e., D > 1.89). A bulk oil viscosity is often an overestimation of the actual viscosity of the entrained oil and may not be appropriate when predicting diffusion in multi-phase materials.
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