The present invention relates to a microdevice for separating the components of a fluid sample. A cover plate is arranged over the first surface of a substrate, and, in combination with a microchannel formed in the first surface, defines a separation conduit for separating the components of the fluid...http://www.google.co.uk/patents/US7128876?utm_source=gb-gplus-sharePatent US7128876 - Microdevice and method for component separation in a fluid
