Patent ID: 8667831

Claim:
A micro viscometer, comprising: a body including; a first chamber, an inlet for introducing a fluid into the first chamber, a second chamber, an outlet for discharging a fluid from the second chamber, a cover, and a substrate secured to the cover and having a plurality of micro channels for fluid communication between the first chamber and the second chamber; a first thin film disposed on one side of the first chamber and adapted to vibrate with the fluid within the first chamber; a second thin film disposed on one side of the second chamber and adapted to vibrate with the fluid within the second chamber; an actuating part for applying vibration onto the fluid in the first chamber by conducting vibration through the first thin film; and a sensing part for sensing at least one of vibration or pressure of the fluid in the second chamber, wherein each of the first thin film and the second thin film includes a silicon wafer and an insulator attached to a top side and bottom side of the silicon wafer.