TY - JOUR
T1 - Chemical imaging of ion diffusion in a microfluidic channel
AU - Miyamoto, K.
AU - Ichimura, H.
AU - Wagner, T.
AU - Yoshinobu, T.
AU - Schöning, M. J.
N1 - Funding Information:
This study was supported by the Grant-in-Aid for Scientific Research (B) (contract no. 24310098) from the Japan Society for the Promotion of Science (JSPS). A part of this study was carried out at the Machine Shop Division and the Project Clean Room of Fundamental Technology Center, Research Institute of Electrical Communication, Tohoku University.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - Chemical imaging sensor
KW - Laminar flow
KW - Microfluidic channel
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U2 - 10.1016/j.proeng.2012.09.289
DO - 10.1016/j.proeng.2012.09.289
M3 - Conference article
AN - SCOPUS:84891668165
SN - 1877-7058
VL - 47
SP - 886
EP - 889
JO - Procedia Engineering
JF - Procedia Engineering
T2 - 26th European Conference on Solid-State Transducers, EUROSENSOR 2012
Y2 - 9 September 2012 through 12 September 2012
ER -