Micropumping mixer

Figure 1.46 Valveless micropumping mixer with two mixing chambers.

Figure 1.47 Schematic design of the membrane-actuated micropumping mixer (left) and photograph of the device (right) [30] (by courtesy of Kluwer Academic Publishers).

Microreactor technology has developed to such an extent that a wide variety of microreactor components, e.g. micropumps, mixers, reaction chambers, heat exchangers, separators and complete integrated microreaction systems with process control units have been fabricated using the appropriate microfabrication process and materials that are suitable for specific applications. 

Mixer type Valveless micropumping micro mixer Diaphragm length, width, thickness 6 mm, 6 mm, 0.15 mm... 

Mixer 20 [M 20] Membrane-actuated Micropumping Micro Mixer... 

Mixer type Membrane-actuated micropumping micro mixer Membrane thickness 40 pm... 

Yang, Z., Goto, H., Matsumoto, M., Yada, T., Micro mixer incorporated with piezoelectrically driven valveless micropump, in Harrison, J., van den Berg,... 

Tsai, J.-H. Lin, L. Active microfluidic mixer and gas bubble filter driven by thermal bubble micropump. Sens. Actuators A. 2002, 97-98, 665-671. 

In the context of proteomic applications, microfluidic devices must comprise all functional elements necessary to perform essential processing steps prior to MS detection, i.e. sample clean-up, preconcentration, affinity selection, digestion and separation. As a result, micropumps, valves, mixers, microreactors,... 

Tsai H Jr, Lin L (2002) Active microfluidic mixer and gas bubble Alter driven by thermal bubble micropump 1. Sens Actuators A Phys 97 665-671... 

One of the passive mixers was developed using capillary forces to insert and hold the liquids in separate chambers, which are connected via a small gap [45]. It is a self-filling micromixer device and does not require micropumps referring it as an automixing device. This device was developed on a chip with two channels with variable volumes that are separated by a thick porous plate through which mixing takes place by diffusion. The idea was to use the capillary forces to fill one capillary with two liquids. 

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