Microrobots powered by concentration polarization electrophoresis

Second-order electrokinetic flow around colloidal particles caused by concentration polarization electro-osmosis (CPEO) can result in a phoretic motion of asymmetric particle dimers in a homogeneous AC electrical field, which we refer to as concentration polarization electro-phoresis (CPEP). To demonstrate this actuation mechanism, we created particle dimers from micron-sized silica spheres with sizes 1.0 µm and 2.1 µm by connecting them with DNA linker molecules. Systematic experiments exploring the dependence of the dimer migration speed on the electric field strength, frequency, and buffer composition align with the theoretical framework of CPEO. This dataset contains microscopy videos that show the migration of these particle dimers under varying electric field strengths, frequencies, and buffer compositions., , , # Dataset supporting the article \"Microrobots Powered by Concentration Polarization Electrophoresis (CPEP)\"

[https://doi.org/10.5061/dryad.9w0vt4bn7 ](https://doi.org/10.5061/dryad.9w0vt4bn7)

The dataset contains microscopy videos of migrating microrobots recorded with an Olympus IX71 microscope. The microscopy videos were recorded at different electric field strengths and frequencies, and at varying buffer concentrations. These videos form the basis for Figures 5 and 6 in the associated publication. Additionally, the dataset contains ImageJ macros for manual measurement of dimer migration speeds, as well as a .csv files containing the measurements generated with these macros.

## Description of the data and file structure

There are two datasets. The first is provided in the folders \"MgCl_and_NaCl.zip\" and \"NaOH_and_trisHCl.zip,\" each containing two folders for a different electrolyte type.

The second is \"voltage_and_freq.zip\", which contains three folders, each for a different micr...