Integrating Electrodes

Micronit has developed a proprietary technique to integrate electrodes in glass chips, e.g. inside channels and reservoirs. The electrodes inside fluidic channels are used for example for electrical impedance spectrometry, contact or contactless conductivity detection, amperometric detection, electrical heating and temperature sensing. Electrodes inside fluidic compartments are mainly used to apply high voltages to generate electroosmotic flow or to perform electrophoresis.

Electrodes can be integrated in between two glass or silicon layers or placed on top of the chip. Also thin insulating layers between electrodes and fluidic channels can be applied.

Functionalities
Different types of electrodes can be made adding unique functionalities to glass chips. Click on the links below to learn more about the various applications and possibilities. 

 

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Field Electrodes
Field electrodes are used to conduct electrical current and generate electrical fields for controlling electroosmotic flows or to perform electrophoresis.

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Detection Electrodes
Detection electrodes are used to measure the local electrical conductivity or impedance of the liquid in a fluidic channel.

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Temperature Sensing & Heating
The combination of electrical heaters and temperature sensors on a chip provides a convenient means to warm fluids inside microchannels.

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Cell Manipulation
With electrodes integrated in the chips a range of in vitro and ex-vivo cell-based applications can be conducted.

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Locally Insulated Electrodes
Electrodes embedded into a microfluidics chip can be used to make electrical contact with gas and fluids.