Electric controlled micro-fluidic device

摘要

In a first aspect of the invention, a micro-fluidic device is presented. The device comprises a micro-fluidic channel having an inner surface; a plurality of pillars positioned along the length of the inner surface of the micro-fluidic channel and configured for creating a capillary action in the micro-fluidic channel when a fluid is present in the micro-fluidic channel. The micro-fluidic device further comprises a plurality of electric power supplies. Each electric power supply is suitable for generating a different voltage and each pillar is connected to a different electric power supply. In a second aspect of the invention, another micro-fluidic device is presented. The device comprises a micro-fluidic channel having an inner surface; a plurality of pillars positioned along the inner surface of the micro-fluidic channel and configured for creating a capillary action in the micro-fluidic channel. The micro-fluidic device further comprises at least one electric power supply. The plurality of pillars are grouped into at least two groups of pillars, each group of pillars comprising at least two pillars and all pillars of at least one group of pillars are connected to the at least one power supply. In a third aspect of the invention, a sensing system for detecting bioparticles is presented. The system comprises a micro-fluidic device according to an embodiment of the invention wherein the surface of each pillar comprises functionalized plasmonic nanoparticles or functionalized SERS nanoparticles; a radiation source for radiating the micro-fluidic device and a detector for detecting SERS signals or surface plasmon resonance.