2020/06/30 by Mathias Dietzel, Steffen Hardt
Engineering · Physics and Astronomy · #Channel (broadcasting) #Electro-osmosis #Electrolyte #Flow (mathematics) #Microfluidic and Bio-sensing Technologies #Microfluidic and Capillary Electrophoresis Applications #Nanopore and Nanochannel Transport Studies #Open-channel flow #Work (physics) #physics.flu-dyn
paper · pdf · doi:10.1103/physrevfluids.5.123702
published as Phys. Rev. Fluids 5, 123702 (2020) · 16 pages, 6 figures
openalex created_date 2020/06/25 · openalex publication_date 2020/12/16 · arxiv created 2020/12/22 · arxiv updated 2020/12/24 · openalex updated_date 2026/08/05
Surface-acoustic waves (SAWs) induce a time-averaged electroosmotic flow (EOF) in an aqueous electrolyte confined in a narrow channel that may exceed flow actuation via acoustic streaming. For a parallel-plate channel the EOF can be maximized by using two SAWs on both channel walls that have the same frequency but are phase-shifted by 180\ifmmode^∘\else\textdegree\fi. The proposed actuation might be a viable alternative for driving liquid electrolytes through narrow channels, without the need for electric interconnects and electrodes.