Development of diffusion osmotic streaming current measurement system in extended nanospaces for non-probe ion mobility measurement

We developed novel electric measurement system based on diffusion osmotic streaming currents in extended nanospaces (10-1,000 nm), and proved their basic principle and performances. The results suggested that ionic diffusion of metal ions in 200 nm-spaces were quite slower than that in microspaces. The developed system, which can measure non-probe ion mobility, should be an adequate measurement tools for understanding ion transport phenomena in extended nanospaces.