Working Principle and Applications of Active and Passive Microfluidic Valves

Abstract

Abstract Microfluidic valves are widely used in the field of microfluidics. The research on microfluidic valves plays an essential role in the development of the microfluidic field. This paper is an overview of the working principle and application of two different microfluidic valves (active and passive). This paper reviews the types of active and passive valves, expounds the mechanisms of active and passive valves, and introduces some applications. In this paper, different active and passive microvalves are divided into different parts according to their working principles, and the application, advantages and disadvantages of active and passive valves with different working principles are introduced in detail. This paper also discusses the development history and limitations of active and passive valves. In the conclusion part, the development status of microvalves is summarized, and some deficiencies are put forward. The conclusion also covers the prospect of the future development of microvalves.