rapid assembly of multilayer microfluidic structures via 3d-printed transfer molding and bonding

by:INDUSTRIAL-MAN     2019-10-19
An important feature of the countryof-the-
Art micro-fluid technology is the ability to manufacture multi-layered structures without relying on the expensive equipment and facilities required for soft exposure
Defined process. Here, three-dimensional (3D)
Printing polymer molds for the construction of multi-layer Poly (
Px)(PDMS)
Equipment with a unique molding, bonding, alignment and rapid assembly process.
Specifically, a novellayer, two-
In order to realize the level of two channels, a double-sided molding method was developed
Flat film/valve for vertical interconnect (vias)
Between the channel level and the integrated inlet/outlet port for quick connection to the external fluid system.
As a demonstration, a single
By applying various gate pressures under the variation of the parameters of the source pressure to construct and test the membrane micro-valve, this indicates a high degree of flow control.
In addition, the multi-layer structure is made by using custom 3D-
Printed stamps, selectively apply uncured liquid silicone rubber adhesive to the adhesive interface only without clogging the fluid channel.
Accurate positioning of stamps and individual layers using integrated alignment markers, this technique is done by quickly assembling six
Layer micro-fluid device.
This work combines the versatility of 3D printing, while retaining the good mechanical and biological properties of silicone rubber, and it is possible to open up a new type of manufacturing technology for multi-layer micro-fluid systems.
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