scholarly journals High-flux ionic diodes, ionic transistors and ionic amplifiers based on external ion concentration polarization by an ion exchange membrane: a new scalable ionic circuit platform

Lab on a Chip ◽  
2016 ◽  
Vol 16 (7) ◽  
pp. 1171-1177 ◽  
Author(s):  
Gongchen Sun ◽  
Satyajyoti Senapati ◽  
Hsueh-Chia Chang
Keyword(s):  
Ion Exchange ◽  
Concentration Polarization ◽  
Ion Exchange Membrane ◽  
Ion Concentration ◽  
High Flux ◽  
Ion Concentration Polarization ◽  
Exchange Membrane

A microfluidic ion exchange membrane hybrid ionic circuit chip is designed to achieve high-flux ionic diode, transistor and amplifier functionalities.

scholarly journals Simulation and Experimental Study of Ion Concentration Polarization Induced Electroconvective Vortex and Particle Movement

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 903
Author(s):  
Junghyo Yoon ◽  
Youngkyu Cho ◽  
Jaehoon Kim ◽  
Hyunho Kim ◽  
Kyuhwan Na ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Electric Fields ◽  
Concentration Polarization ◽  
Microfluidic System ◽  
Ion Concentration ◽  
Experimental Investigations ◽  
Microfluidic Systems ◽  
Ion Concentration Polarization ◽  
Exchange Membrane ◽  
Three Components

Ion concentration polarization (ICP) has been widely applied in microfluidic systems in pre-concentration, particle separation, and desalination applications. General ICP microfluidic systems have three components (i.e., source, ion-exchange, and buffer), which allow selective ion transport. Recently developed trials to eliminate one of the three components to simplify the system have suffered from decreased performance by the accumulation of unwanted ions. In this paper, we presented a new ICP microfluidic system with only an ion-exchange membrane-coated channel. Numerical investigation on hydrodynamic flow and electric fields with a series of coupled governing equations enabled a strong correlation to experimental investigations on electroconvective vortices and the trajectory of charged particles. This study has significant implications for the development and optimization of ICP microfluidic and electrochemical systems for biomarker concentration and separation to improve sensing reliability and detection limits in analytic chemistry.

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