Piezoelectric type automatic reaction chip

Abstract

The invention discloses a piezoelectric type automatic reaction chip which is sequentially provided with a micro-mixer layer, a first insulating layer, a transducer layer and a second insulating layer from top to bottom, wherein a vibration mixing tank is integrated in the micro-mixer layer; the first insulating layer is arranged between the micro-mixer layer and the transducer layer; a fork finger type transducer and a chip electrode are integrated in the transducer layer; the fork finger type transducer is arranged just under the vibration mixing tank; the shape of the fork finger type transducer corresponds to that of the vibration mixing tank; fluid in the vibration mixing tank vibrates under the action of the fork finger type transducer; the fork finger type transducer is connected with the chip electrode; the chip electrode is connected with a reaction controller; the reaction controller is controlled by an internal program. The piezoelectric type automatic reaction chip has the beneficial effects that the piezoelectric type automatic reaction chip is a multifunction and full automation are achieved, mixing, reaction, temperature control and agitation are integrated, the application scope of the microfluid reaction chip is greatly enlarged, and the microfluid reaction chip is not limited by the micro biochemical reaction at room temperature.

Description

technical field [0001] The invention relates to an automatic response chip, in particular to a piezoelectric automatic response chip. Background technique [0002] At present, the microfluidic reaction chip is a new type of biochemical reaction technology developed in the MEMS field in recent years. Because the reaction can be completed in a small volume, the amount of reagents is small, the reaction efficiency is high, and the preparation effect is good, it has attracted extensive attention from scholars from all over the world. [0003] There are mainly two types of microfluidic reaction chips: active and passive. The passive type relies on the free movement of microfluids to achieve mixing. Generally, it is necessary to add two-dimensional or three-dimensional structures such as grooves and corners in the flow channel to enhance the mixing effect. Long, large volume, uncontrollable reaction process and other problems, the active type relies on external energy such as micr...

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Problems solved by technology

[0004] The main purpose of the present invention is to solve the problem that the existing piezoelectric microfluidic reactor can only realize pulsating mixing, but cannot complete the complex reaction process, long reaction time, active stirring disturbance, strict temperature control (such as the liquid phase synthesis of noble metal nanoparticles) ) of the entire chemical reaction

[0005] Another object of the present invention is to solve the problem that the existing interdigital transducers used in microfluidic reaction chips can only be heated, do not directly act on the fluid reaction process, or only achieve active mixing through a single acoustic wave disturbance and related problems. The overall structure of the device is complex, the volume is large, and it is not easy to integrate and miniaturize

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