کنفرانس مهندسی برق ایران

صفحه اصلی / سی امین کنفرانس بین المللی مهندسی برق

ZnO-based Acoustofluidics: Droplet-based Particle Manipulation

نویسندگان :

Sara Abbasi¹ Behdad Barahimi² Sara Darbari³ Mohammad Kazem Moravvej-Farshi⁴ Mohammad Zabetian⁵

1- دانشگاه تربیت مدرس 2- دانشگاه تربیت مدرس 3- دانشگاه تربیت مدرس 4- دانشگاه تربیت مدرس 5- دانشگاه تربیت مدرس

کلمات کلیدی :

acoustofluidics, particle manipulation, zinc oxide, travelling surface acoustic wave, standing surface acoustic wave

چکیده :

Droplet microfluidics as a cost effective and precise branch of microfluidics provides shorter time analyses than continuous-flow branch. This feature, along with smaller amount of sample has attracted a large number of researchers. Here, a droplet-based Acoustofluidics platform is developed to investigate the imposed travelling surface acoustic wave (TSAW) and standing surface acoustic wave (SSAW) influence on polystyrene (PS) microbeads that are dispersed in a deionized water droplet. Aluminum interdigital transducers (IDTs) are patterned through lift-off process over the zinc oxide (ZnO) thin film; the ZnO thin film serves as the piezoelectric layer which is RF sputtered on silicon oxide- silicon substrate. By tracing the PS microparticles motion, the effect of interacting forces in both TSAW and SSAW regimes is investigated and the formation of acoustic streaming vortices is shown.