09 فروردین 1403
رضا حاجي آقائي وفائي

رضا حاجی آقائی وفائی

مرتبه علمی: دانشیار
نشانی: بناب - دانشگاه بناب
تحصیلات: دکترای تخصصی / مهندسی برق
تلفن: 04137745000-1624
دانشکده: دانشکده فنی و مهندسی
گروه: گروه مهندسی برق

مشخصات پژوهش

عنوان
In-situ AC electroosmotic and thermal perturbation effects for wide range of ionic strength
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
ac electroosmotic; ac electrothermal; chaotic regime; microfluidic; electric conductivity
پژوهشگران رضا حاجی آقائی وفائی (نفر اول)، آیسان معدن پسندی (نفر دوم)

چکیده

AC electrokinetic flow is promising in designing microfluidic chips for manipulation of biological and chemical samples toward clinical diagnostics. Four pieces of electrodes are optimized to enhance mixing effect inside a straight microchannel. In this research, the mixing dependency on the ionic strength of solutions is investigated. AC electroosmotic secondary flow is responsible for the mixing at low ionic strength (σ < 5 mS m–1), whereas AC electrothermal secondary flow is proposed to mix high conductive mediums (σ > 5 mS m–1). The electrode-electrolyte impedance analysis is employed to facilitate the in-situation mixing process by choosing appropriate electrical excitation parameters for the electrodes.