The chemical imaging sensor is a chemical sensor which is capable of visualizing the spatial distribution of chemical species in sample solution. In this study, a novel measurement system based on the chemical imaging sensor was developed to observe the inside of a Y-shaped microfluidic channel while injecting two sample solutions from two branches. From the collected chemical images, it was clearly observed that the injected solutions formed laminar flows in the microfluidic channel. In addition, ion diffusion across the laminar flows was observed. This label-free method can acquire quantitative data of ion distribution and diffusion in microfluidic devices, which can be used to determine the diffusion coefficients, and therefore, the molecular weights of chemical species in the sample solution.
|Number of pages||4|
|Publication status||Published - 2012|
|Event||26th European Conference on Solid-State Transducers, EUROSENSOR 2012 - Krakow, Poland|
Duration: 2012 Sept 9 → 2012 Sept 12
- Chemical imaging sensor
- Laminar flow
- Microfluidic channel