Key to Claros's device is its ability to perform the test on a small drop of blood. The surface of the cartridge is covered in narrow channels, which serve as both storage for the chemicals needed for the assay and as tiny test tubes in which to carry out the reaction. Each reagent is lined up sequentially in one long channel and separated by small air bubbles. Once the cartridge is inserted into the reader, a vacuum pulls the blood through one channel and delivers the appropriate sequence of reagents. This approach avoids the pumps used to move chemicals in other microfluidics chips, enabling a simple and robust design with no moving parts. The reader itself is simple, using an LED and photodiode to detect the buildup of silver--the output of the reaction--on the cartridge. The more silver, the less light passes through the chip and the higher the PSA level.
PS.沒有了Moving Parts -> No Motor -> No Sensor -> No Controller -> No MCU -> No Job ... Hahaha
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