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...由浓度极化电渗（concentration polarization electro-osmosis, CPEO）引发的胶体颗粒周围二阶动电流动，可使非对称颗粒二聚体在均匀交流电场中产生泳动，我们将该运动命名为浓度极化电泳（concentration polarization electro-phoresis, CPEP）。为验证该驱动机制，我们通过DNA连接分子连接尺寸分别为1.0 μm与2.1 μm的微米级二氧化硅微球，制备得到颗粒二聚体。我们开展了系统性实验，探究二聚体迁移速度对电场强度、频率及缓冲液组成的依赖关系，实验结果与CPEO的理论框架相符。本数据集包含显微视频，记录了上述颗粒二聚体在不同电场强度、频率及缓冲液组成条件下的迁移过程。 # 本数据集支撑论文《基于浓度极化电泳（CPEP）驱动的微机器人》 [https://doi.org/10.5061/dryad.9w0vt4bn7](https://doi.org/10.5061/dryad.9w0vt4bn7) 本数据集包含采用Olympus IX71显微镜拍摄的迁移微机器人显微视频。这些视频记录了不同电场强度、频率及缓冲液浓度条件下的样本情况，是相关论文中图5与图6的基础数据。此外，本数据集还包含用于手动测量二聚体迁移速度的ImageJ宏脚本，以及通过这些宏脚本生成的测量数据CSV文件。 ## 数据与文件结构说明 本数据集包含两个子数据集。第一部分位于"MgCl_and_NaCl.zip"与"NaOH_and_trisHCl.zip"压缩包中，每个压缩包内均包含两个对应不同电解质类型的子文件夹。 第二部分为"voltage_and_freq.zip"压缩包，其中包含三个文件夹，每个文件夹对应不同的微...