Related Experiment Video
Updated: May 27, 2026

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
Published on: January 28, 2022
Converting steady laminar flow to oscillatory flow through a hydroelasticity approach at microscales
1Singapore Institute of Manufacturing Technology, 71 Nanyang drive, Singapore 638075. hmxia@SIMTech.a-star.edu.sg
Abstract:
We report a hydroelasticity-based microfluidic oscillator that converts otherwise steady laminar flow to oscillatory flow. It incorporates an elastic diaphragm to enhance nonlinearity of the flow. Negative differential flow resistance is observed. High-frequency oscillatory flow is produced passively through interactions among hydrodynamic, elastic and inertial forces, without resorting to external actuators and control equipment. Driven by fluid flow and pressure, this device can operate in either steady laminar flow or oscillatory flow states, or work as a valve. Its applications for flow control and operation, and mixing enhancement are demonstrated.
Related Concept Videos
Steady, Laminar Flow Between Parallel Plates
Steady, Laminar Flow in Circular Tubes
Laminar and Turbulent Flow
Couette Flow
Steady Flow of a Fluid Stream
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
Bernoulli's Equation for Flow Along a Streamline

