Nanoflow Pump
We present a new concept of paper-based devices and inkjet printer-like analyzer for clinical diagnostics. A water-resisting paper coated with polyolefin resin was selected for the chip’s material, and the microchannels were successfully fabricated by using hot-embossing process on the paper.
Pressure resistance was evaluated by feeding water into the micro-channel of a paper chip and the channel could stand practical pressure level more than 100 kPa. Liquid flow driven by capillary force was observed in the prototype of paper chip.
![Fig. 2a )Photograph of a die for hot-embossing, b) Topology of microfluidic channels of paper nanoflow pump, c) Flow of a sample liquid in paper channels driven by capillary forces](http://microfluidics.jp/en/wp-content/uploads/2015/01/Fig21.png)
Fig. 2a) Photograph of a die for hot-embossing, b) Topology of microfluidic channels of paper nanoflow pump, c) Flow of a sample liquid in paper channels driven by capillary forces
We have confirmed that evaluated paper materials and fabrication methods were feasible for the disposable chip.