Patent ID: 8221704
Filing Date: 2012-07-17
Classification: B01L,F16K,G01N

Abstract:
1. A microfluidic device comprising: a substrate comprising an upper plate and a lower place, the upper plate and the lower plate being bonded to each other; a channel formed in the substrate and in which a fluid can move; a valve controlling flow of a fluid flowing along the channel and comprising a phase transition material which is in a non-fluidic phase at an ambient temperature and changes into a fluid phase upon application of energy; a valve chamber for housing the valve, the chamber being fluid connected to the channel, wherein the valve moves from the valve chamber to the channel when the valve in the valve chamber is in fluid phase; a first lens disposed on the substrate and adjusts a beam of the energy applied from an energy source to the valve in the channel; and a second lens disposed on the substrate between the energy source and the valve chamber, wherein the first lens is formed as an integral part of the upper plate or the lower plate and located on the exterior surface of the upper plate or the lower plate.