مشخصات پژوهش

عنوان	Shear-rate-dependent rheology effects on mass transport and surface reactions in biomicrofluidic devices
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	electroosmotic flow, microfluidics, mass transport, surface reaction, nonNewtonian fluids
چکیده	Consideration is given to shear-rate-dependent rheology effects on mass transport in a heterogeneous microreactor of rectangular cross section, utilizing both numerical and analytical approaches. The carrier liquid obeys the power-law viscosity model and is actuated primarily by an electrokinetic pumping mechanism. It is discovered that, considering the shear-thinning biofluids to be Newtonian fluids gives rise to an overestimation of the saturation time. The degree of overestimation is higher in the presence of large Damkohler numbers and electric double layer thicknesses. It is also increased by the application of a favorable pressure gradient, whereas the opposite is true when an opposed pressure gradient is applied. In addition, a channel of square cross section corresponds to the maximum fluid rheology effects. Finally, the numerical results indicate the existence of a concentration wave when using long channels. This is con- firmed by analytical solutions, providing a closed form solution for wave propagation speed.
پژوهشگران	هادی یاوری (نفر چهارم)، محمد حسن سعیدی (نفر سوم)، یونس امینی (نفر دوم)، آرمان صادقی (نفر اول)