Abstract
Two kinds of switching micro fluidic chips called "Dead volume-free" micro fluidic chip for portable micro chemical devices have been developed successfully. The 10-directional switching valve chip and the sampling chip as components of the air pressure drive micro dispenser system were developed successfully. The first one is the sampling chip that divides liquid every 1μL or 0.5μL without any dead volume of sample by decompressing and compressing the air. This simple operation is caused by our original novel detection method of micro fluid and check valves of hat shape. The second is the switching valve chip that can select the outlet. This chip has a special rotary mechanism consisting of silicone rubber ring for leak-preventions and the precise auto-positioning mechanism. This chip can switch ten outlets by built-in micro solenoid (1N, 6V DC) under high leakage pressure (higher than 500kPa). Since the both of chips were fabricated using our original "hybrid microstereolithography" (hybrid-IH process), micro assembling and bonding are not needed.
| Original language | English |
|---|---|
| Pages | 1112-1114 |
| Number of pages | 3 |
| Publication status | Published - 2006 Jan 1 |
| Externally published | Yes |
| Event | 10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006 - Tokyo, Japan Duration: 2006 Nov 5 → 2006 Nov 9 |
Conference
| Conference | 10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006 |
|---|---|
| Country/Territory | Japan |
| City | Tokyo |
| Period | 06/11/5 → 06/11/9 |
Keywords
- 10-directional switching valve
- Check valves
- Hybrid microstereolithography
- Micro dispenser
- Photosensor
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- Bioengineering