Patent ID: 7909973

Claim:
A method of mixing at least two materials comprising the steps of: providing a microchip that includes a substrate having first, second, and third channels disposed therein, said first, second, and third channels being in fluid communication at a channel intersection; providing first, second, and third electrodes in said third channel at spaced locations along said third channel; moving a first material through the first channel into the third channel adjacent to the first, second, and third electrodes by applying an electrical potential between the first channel and the third channel; moving a second material through the second channel into the third channel adjacent to the first, second, and third electrodes by applying the electrical potential between the second channel and the third channel; and applying electrical potentials between the first and second electrodes and between the second and third electrodes, such that the first and second materials are circulated in said third channel, whereby the first and second materials are mixed together.