Flow Ripple Reduction in Reciprocating Pumps by Multi-Phase Rectification.

ABSTRACT: Reciprocating piezoelectric micropumps enable miniaturization in microfluidics for lab-on-a-chip applications such as organs-on-chips (OoC). However, achieving a steady flow when using these micropumps is a significant challenge because of flow ripples in the displaced liquid, especially at low frequencies or low flow rates (<50 µL/min). Although dampers are widely used for reducing ripples in a flow, their efficiency depends on the driving frequency of the pump. Here, we investigated multi-phase rectification as an approach to minimize ripples at low flow rates by connecting piezoelectric micropumps in parallel. The efficiency in ripple reduction was evaluated with an increasing number (n) of pumps connected in parallel, each actuated by an alternating voltage waveform with a phase differ

SUBMITTER: Ozkayar G 

PROVIDER: S-EPMC10422673 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature