title: Nanoliter-droplet acoustic streaming via ultra high frequency surface acoustic waves.
abstract: The relevant length scales in sub-nanometer amplitude surface acoustic wave-driven acoustic streaming are demonstrated. We demonstrate the absence of any physical limitations preventing the downscaling of SAW-driven internal streaming to nanoliter microreactors and beyond by extending SAW microfluidics up to operating frequencies in the GHz range. This method is applied to nanoliter scale fluid mixing.
authors.affiliation: Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, 56127, Pisa, Italy.
authors.forename: Richie J
authors.initials: RJ
authors.lastname: Shilton
authors.forename: Marco
authors.initials: M
authors.lastname: Travagliati
authors.forename: Fabio
authors.initials: F
authors.lastname: Beltram
authors.forename: Marco
authors.initials: M
authors.lastname: Cecchini
mesh_terms: D000162:Acoustics; D046210:Microfluidic Analytical Techniques / Q000379:methods*; D036103:Nanotechnology / Q000379:methods*; D013016:Sound
keywords: acoustics; lab-on-a-chip; microfluidics; mixing; surface acoustic waves