A PMMA valveless micropump using electromagnetic actuation

Yamahata, Christophe; Lotto, C.; Al-Assaf, E.; Gijs, Martin A. M.

doi:10.1007/s10404-004-0007-6

Cited by 160 publications

(106 citation statements)

References 36 publications

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“…For reciprocating micropumps, magnetic actuation methods have been proposed [7,8] and plastic and glass materials have become the preferred choice [3]. In particular, glass is a very promising material for LOC applications, since it is chemically inert and sterilizable at high temperature.…”

Section: Introductionmentioning

confidence: 99%

A ball valve micropump in glass fabricated by powder blasting

Yamahata

Lacharme

Burri

et al. 2005

Sensors and Actuators B: Chemical

107

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We present the microfabrication and characterization of a ball valve micropump in glass, which is magnetically actuated using the sinusoidal current of an external electromagnet. We employ the use of a simple powder blasting technology for microstructuring the glass substrates and fusion bonding for assembly of the multi-layered microfluidic chip. The use of a polymer membrane with embedded permanent magnet gives rise to a large actuation stroke, making the micropump bubble-tolerant and self-priming. The micropump exhibits a backpressure as high as 280 mbar and water flow rates up to 5 mL/min thanks to the large magnetic actuation force and the use of high-efficiency ball valves. The frequency-dependent characteristics are in excellent agreement with a hydrodynamic damped oscillator model.

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Section: Introductionmentioning

confidence: 99%

A ball valve micropump in glass fabricated by powder blasting

Yamahata

Lacharme

Burri

et al. 2005

Sensors and Actuators B: Chemical

107

View full text Add to dashboard Cite

show abstract

“…An electromagetic actuated polymethylmethacrylate (PMMA) valveless micropump was fabricated by standard micromachining techniques. 51 The micropump was a three-dimensional structure and consisted of two diffuser elements located at the inlet and outlet of the pump chamber. PDMS membrane with an integrated magnet made of NdFeB (neodymium, iron, and boron) magnetic powder was bonded to the pump chamber for actuation.…”

Section: Mechanical Approachmentioning

confidence: 99%

Microfluidic Systems for Diagnostic Applications: A Review

Lei

2012

SLAS Technology

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Because of intensive developments in recent years, the microfluidic system has become a powerful tool for biological analysis. Entire analytic protocols including sample pretreatment, sample/reagent manipulation, separation, reaction, and detection can be integrated into a single chip platform. A lot of demonstrations on the diagnostic applications related to genes, proteins, and cells have been reported because of their advantages associated with miniaturization, automation, sensitivity, and specificity. The aim of this article is to review recent developments in microfluidic systems for diagnostic applications. Based on the categories of various fluid-manipulating mechanisms and biological detection approaches, in-depth discussion of the microfluidic-based diagnostic systems is provided. Moreover, a brief discussion on materials and manufacturing techniques will be included. The current excellent integration of microfluidic systems and diagnostic applications suggests a solid foundation for the development of practical point-of-care devices.

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“…Micro-pumps are smaller than conventional fans and consume less power. They can be divided into the following types: electromagnetic [3,4], piezoelectric [5][6][7], shape memory alloy [8], electrostatic [9], thermo-pneumatic [10], and dynamic, which are typically represented by electro-hydrodynamic [11] and magneto-hydrodynamic [12,13] pumps. Electromagnetic and piezoelectric devices are often used as actuators in commercial products.…”

Section: Introductionmentioning

confidence: 99%

A Novel Hybrid Actuator Driven Magnetically in the Bi-Cell PEM Fuel Cell Stack

Hsu

2017

Metals

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This study develops an air breathing pump driven by a piezoelectric actuator for a proton exchange membrane fuel cell (PEMFC) stack. Permanent magnets are combined with a piezoelectric actuator to drive three air breathing pumps using magnetic force. This design enables the pump to provide a sufficient amount of air simultaneously to six cathode flow field plates in a stack of three "bi-cell PZTmag-PEMFCs". When both the PZTmag and the PDMSmag had a magnet with a 6-mm diameter and 1-mm thickness, a maximum amplitude of 87 µm was generated at 0.03 W of power under operating conditions of 70 Hz and 40 V. In computational fluid dynamics (CFD), when the nozzle and the diffuser of an air breathing pump have an aspect ratio of 13.13, air flow distributes uniformly inside the pump, thus allowing for uniform transmission of oxygen to the membrane electrode assembly. This aspect ratio was applied to the bi-cell PZTmag-PEMFC stack and yielded a maximum net power flux of 0.1925 W·cm −2 , 20% higher than that reported in a previous study , with 68% and 76% less volume and weight, respectively.

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A PMMA valveless micropump using electromagnetic actuation

Cited by 160 publications

References 36 publications

A ball valve micropump in glass fabricated by powder blasting

A ball valve micropump in glass fabricated by powder blasting

Microfluidic Systems for Diagnostic Applications: A Review

A Novel Hybrid Actuator Driven Magnetically in the Bi-Cell PEM Fuel Cell Stack

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