Abstract / Description of output
Fluid jets are found in nature at all length scales from microscopic to cosmological. Here we report on an electroosmotically driven jet from a single glass nanopore about 75 nm in radius with a maximum flow rate ∼15 pL/s. A novel anemometry technique allows us to map out the vorticity and velocity fields that show excellent agreement with the classical Landau-Squire solution of the Navier-Stokes equations for a point jet. We observe a phenomenon that we call flow rectification: an asymmetry in the flow rate with respect to voltage reversal. Such a nanojet could potentially find applications in micromanipulation, nanopatterning, and as a diode in microfluidic circuits.
Original language | English |
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Pages (from-to) | 5141-5146 |
Number of pages | 6 |
Journal | Nano Letters |
Volume | 13 |
Issue number | 11 |
DOIs | |
Publication status | Published - 13 Nov 2013 |
Keywords / Materials (for Non-textual outputs)
- flow rectification
- microfluidics
- Nanojet
- nanopore