Magnetization and actuation of polymeric microstructures with magnetic nanoparticles for application in microfluidics

Fahrni, F.; Prins, Mwj Menno; IJzendoorn, L.J. van

doi:10.1016/j.jmmm.2008.11.090

Cited by 52 publications

(54 citation statements)

References 24 publications

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“…(Khoo and Liu 2001;Abramchuk et al 2007b;Martin et al 2007;Peng et al 2008;Pirmoradi et al 2010). For the elastic polymeric matrix, silicone elastomer (Khoo and Liu 2001;Fahrni et al 2009a), polyimide (Kohl et al 1999), natural rubber (El-Nashar et al 2006, and other materials are utilized.…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic elastomer's merits, which include high elasticity, a remarkable deformational effect imparted by its low Young's modulus, a quick response to magnetic fields and potential actuation without on-chip power sources, have drawn much attention for the purposes of magnetic elastomer membrane applications in micro valves, pumps, actuators (Khoo and Liu 2001;Wang et al 2004;Fahrni et al 2009a;Pirmoradi et al 2010), and mixers (Huh et al 2007). In fact, many researchers have investigated this novel material and its applications.…”

Section: Introductionmentioning

confidence: 99%

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Design and fabrication of microfluidic mixer from carbonyl iron–PDMS composite membrane

Zhang

Wang

et al. 2010

Microfluid Nanofluid

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This paper introduces a carbonyl iron-PDMS (CI-PDMS) composite magnetic elastomer in which carbonyl iron (CI) particles are uniformly distributed in a PDMS matrix. The CI particles and the PDMS were mixed at different weight ratios and tested to determine the influence of CI concentration. The magnetic and mechanical properties of the magnetic elastomers were characterized, respectively, by vibrating-sample magnetometer and by tensile testing using a mechanical analyzer. The elastomer was found to exhibit high magnetization and good mechanical flexibility. The morphology and deformation of the CI-PDMS membrane also were observed. A magnetically actuated microfluidic mixer (that is, a micromixer) integrated with CI-PDMS elastomer membranes was successfully designed and fabricated. The high efficiency and quality of the mixing makes possible the impressive potential applications of this unique CI-PDMS material in microfluidic systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and fabrication of microfluidic mixer from carbonyl iron–PDMS composite membrane

Zhang

Wang

et al. 2010

Microfluid Nanofluid

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“…(Gupta et al 2005, Pankhurst et al 2003, and delivery of drugs (Voltairas et al 2002) or nucleic acids (Mair et al 2009, Buerli et al 2007, as they can be manipulated via external magnetic fields to improve transport in biological systems. They are also used in the fabrication of photonic crystals (Ding et al 2009), as nanowire contacts in electronic devices (Bangar et al, 2009), and as device components in microfluidics (Kavcic et al 2009;Fahrni et al 2009). Additionally, there has been growing interest in the use of magnetic particles in the fabrication of nanomotors and nanomachines (Ghosh & Fischer, 2009).…”

Section: (B) (A)mentioning

confidence: 99%

Laser-Based Lithography for Polymeric Nanocomposite Structures

Athanassiou¹,

Fragouli²,

Monteleone³

et al. 2011

Recent Advances in Nanofabrication Techniques and Applications

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] For these purposes, various actuation principles have been adopted including electrostatic, 2,3,6 thermal 4,14 or piezoelectric. 1,7 However, these methods present diverse limitations, making difficult their direct utilization in the final devices.…”

Section: Introductionmentioning

confidence: 99%

Highly Magneto-Responsive Elastomeric Films Created by a Two-Step Fabrication Process

Marchi

Casu

Bertora

et al. 2015

ACS Appl. Mater. Interfaces

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An innovative method for the preparation of elastomeric magnetic films with increased magneto-responsivity is presented. Polymeric films containing aligned magnetic microchains throughout their thickness are formed upon the magnetophoretic transport and assembly of microparticles during the polymer curing. The obtained films are subsequently magnetized at a high magnetic field of 3 T directed parallel to the microchains orientation. We prove that the combination of both, alignment of the particles along a favorable direction during 2 curing, and subsequent magnetization of the solid films induces an impressive increase of the films' deflection. Specifically, the displacements reach few millimeters, up to 85 times higher compared to the non-treated films with the same particles concentration. Such process can improve the performance of the magnetic films without increasing the amount of magnetic fillers, thus without compromising the mechanical properties of the resulting composites. The proposed method can be used for the fabrication of magnetic films suitable as components in systems where high displacements at relatively low magnetic fields are required, such as sensors, drug delivery or microfluidic systems, especially where remote control of valves is requested to achieve appropriate flow and mixing of liquids.

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Magnetization and actuation of polymeric microstructures with magnetic nanoparticles for application in microfluidics

Cited by 52 publications

References 24 publications

Design and fabrication of microfluidic mixer from carbonyl iron–PDMS composite membrane

Design and fabrication of microfluidic mixer from carbonyl iron–PDMS composite membrane

Laser-Based Lithography for Polymeric Nanocomposite Structures

Highly Magneto-Responsive Elastomeric Films Created by a Two-Step Fabrication Process

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