On-chip manipulation of levitated femtodroplets

Lyuksyutov, I. F.; Naugle, D. G.; Rathnayaka, K. D. D.
September 2004
Applied Physics Letters;9/6/2004, Vol. 85 Issue 10, p1817
Academic Journal
We report diamagnetic levitation of droplets and/or particles of pico–femtoliter volume and demonstrate their on-chip storage and high precision manipulation (translation, merging, assembling and rotation). We also demonstrate a levitation based microfluidic processor to process droplets/particles with up to a billion times smaller volume than in typical microfluidic devices. The levitated particles can be positioned with up to 300 nm accuracy and precisely rotated and assembled, providing a different physical approach for micro-electro-mechanical systems. Force can be applied to the droplets/particles via magnetic, electric, and gravitational fields with up to femto-Newton accuracy, and potential energy can be controlled with up to 0.2 zepto J(0.05kBT) precision, thus providing experimental tools for fundamental studies.


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