Patent attributes
A microfluidic device for assessing properties of a fluid. The device utilizes a microtube capable of different vibration modes for promoting certain performance and/or structural aspects of the device. The microtube is supported by a base so as to be spaced apart from a substrate surface. The microtube has a peripheral portion surrounding the base, arms supporting the peripheral portion from the base, and a continuous internal microchannel having at least first and second microchannel portions. Each microchannel portion defines a separate flow route, and each flow route originates at the base, continues through a portion of the peripheral portion, and returns to the base. The first and second microchannel portions are fluidically connected to inlet and outlet ports, respectively, within the base. Vibration of the microtube is induced and sensed by driving and sensing elements. Fluid properties are determined from outputs of the sensing elements.
