Liquid transferring device

Abstract

A liquid conveying substrate comprises: rectangular electrodes which are disposed on the substrate surface and whose surfaces are covered with a dielectric with a water repellent surface; first axial electrode columns where the rectangular electrodes are coupled in an x direction; and second axial electrode columns where the rectangular electrodes are coupled in a y direction. Accordingly, electrodes necessary for conveying liquid droplets can be arranged on one substrate, and the number of mechanisms for controlling the potential can be suppressed.

Description

technical field [0001] The present invention relates to a liquid delivery device for manipulating tiny liquid droplets by electrostatic force. Background technique [0002] In recent years, there has been a demand for technologies and devices that can easily analyze trace amounts of chemical substances and biological substances due to heightened interest in environmental issues and expectations for a sophisticated medical society. In response to these demands, microchemical analysis systems (also known as μTAS (micro-total analysis system), Lab-On-Chip (Lab-On-Chip), etc.) have the advantages of simplicity and shortened measurement time compared with previous analysis techniques, so , a lot of research has been done on it. [0003] The microchemical analysis system miniaturizes a series of chemical operations such as sample mixing, reaction, and separation, and integrates them on glass or plastic substrates. Previously, the mainstream of microchemical analysis system resea...

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Problems solved by technology

[0018] Although the device described in Non-Patent Document 3 can freely transport liquid droplets to the positions of N×M grid points formed by the upper and lower electrodes with N+M electrodes and corresponding switches, it needs to have driving devices on both the upper and lower substrates. Necessary electrodes, so it is difficult to mix sensors and reactors on the substrate

[0019] On the other hand, in Non-Patent Document 4, since there are a plurality of electrodes required for driving on one plane, sensors and reactors can be provided on the other substrate, but the quantitative nature of delivering a certain amount of liquid is not considered. , The correctness of delivering the delivered liquid to the determined position with good precision to stop it

Devices that cannot be easily mixed with sensors and reactors as above, and can be positioned accurately

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