micropump – TechConnect Briefs

Introducing a Digital Micropump for Driving a Droplet in a Microfluidic Channel

Rezaei Nejad H., University of British Columbia, CA

This paper presents a novel pumping technique which is compatible with both digital and continuous microfluidic platforms. In essence, a target droplet (referred to as the pumped droplet) is pumped by actuating the secondary droplet [...]

Syringe-Assisted Point-Of-Care Pumping

Xu L., Lee H., Oh K.W., SUNY at Buffalo, US

By utilizing the high gas permeability of PDMS, a simple syringe-assisted micropumping method is presented. A constant, controllable pumping rate ranging from 0.3 to 4 nl/s was achieved by controlling the gap distance (g) and [...]

Design and Simulations of a Microfluidic Pump with Multiple Vibrating Membranes

Koombua K., Pidaparti R.M., Longest P.W., Atkinson G.M., Virginia Commonwealth University, US

A novel design of a micropump with multiple vibrating membranes has been developed in this study. The micropump consists of three nozzle/diffuser elements with vibrating membranes, which are used to create pressure difference in the [...]

Embeddable Low-Voltage Micropump using Electroosmosis of the Second Kind

Heldal T., Volden T., Auerswald J., Knapp H., IQ Micro Inc., CH

A low-voltage micropump with no moving parts and based on standard MEMS fabrication techniques has been developed. High pumping rate is achieved by using electroosmosis of the second kind (EO2). The pump has been characterized [...]

Design, Modelling and Simulation of a PZN-PT Actuated Micropump

Malleo D., Haas C., Kraft M., University of Southampton, Microelectronics Group, UK

We present an optimization methodology for the design of a self-priming piezoelectrically actuated pump made of a borosilicate glass bonded to silicon. New findings in the design optimization of the piezo-actuated membrane are presented: it [...]

Numerical Modeling of a Piezoelectric Micropump

Schlipf R., Haghighi K., Lange R., Purdue University, US

An effective description and an accurate understanding of any pumping mechanism is critical, especially of the micro scale. With the existence of a comprehensive and adaptable model, accurate preproduction predictions of performance are realized. Optimal [...]

Polymeric Micropump with SU-8 Check Valves Assembled by Lamination Technique

Truong T-Q, Nguyen N-T., Nanyang Technological University, SG

This paper presents the first micropumps assembled using polymeric lamination technology. Each pump consists of two 100-m-thick, 10-mm-diameter SU-8 discs; two 1.5-mm-thick, 15-mm-diameter polymethylmethacrylate (PMMA) discs; and one piezo disc. The SU-8 parts were fabricated [...]

In-Plane Micropump: Design Optimization

Sin J., Lee W.H., Stephanou H.E., RPI, US

This paper presents the fabrication, analysis and optimization of a novel monolithically fabricated diaphragm micropump, referred to as an in-plane micropump. Compared to previous technology, the micropump in this paper is fabricated to have all [...]

Modular Silicon Micropump

Johnson A.D., Martynov V., Gupta V., Menchaca L., TiNi Alloy Company, US

A new micropump mechanism has been created that consists of two silicon/silicon oxide dies with vias and dome-shaped membranes. The membranes are bonded face-to-face to form variable-volume domed liquid chambers. The membranes increase and decrease [...]

Simulation and Optimization of Tesla Valves

Truong T-Q, Nguyen N-T., Nanyang Technological University, SG

Tesla valve is a no-moving-parts valve. It has many advantages over conventional checkvalves in microscale. However, there has been very few literatures discussing its optimization. Systematic construction of the valve’s geometry has not been reported. [...]