Acoustically Driven Microfluidic Micromotor for Lab-on-a-microdisc
نویسنده
چکیده
We report on the implementation of a novel surface acoustic wave driven fluid-coupled rotational micromotor. A pair of opposing surface acoustic waves were generated on a Lithium Niobate substrate, geometrically tailored to asymmetrically enter the water fluid coupling layer. This generated high rotational velocities in the fluid coupling layer and subsequently the disc. Rotation of a 5 mm diameter disc was driven up to speeds of 2,250 rpm, with a start up torque of over 60 nN m. The radial accelerations shown, up to 139 m/s2, provide opportunities for truly microscale lab-on-a-chip devices.
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