Hybrid magnetic-semiconductor nanostructures

Peeters, F. M.; Boeck, J. De

doi:10.1016/b978-012513760-7/50038-1

Cited by 12 publications

(3 citation statements)

References 283 publications

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“…D ELECTRONS in nonuniform magnetic fields are predicted to display a range of new semi-classical, and quantum effects [1]. Such nonuniform magnetic fields can be produced by patterned ferromagnetic structures above near-surface 2D electron systems.…”

mentioning

confidence: 99%

Giant magnetoresistance induced by magnetic barriers

et al. 2001

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mentioning

confidence: 99%

Giant magnetoresistance induced by magnetic barriers

et al. 2001

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“…This reduction can be explained by the fact that the rounding suppresses the pinning fields in the vicinity of the sharp corner [61]. Meanwhile, when the velocity field was measured across the width of our proposed MAP microchamber (see Figure 12b), both models showed a reduction in velocity field at the region next to the bifurcated channel wall.…”

Section: Design Optimizationmentioning

confidence: 93%

“…This reduction can be explained by the fact that the rounding suppresses the pinning fields in the vicinity of the sharp corner [61]. According to studies conducted by both Feng et al [59] and Green et al [60], a round-shaped turn was identified to generate uniform velocity profiles and cell adhesion within the channel.…”

Section: Design Optimizationmentioning

confidence: 99%

Computational Analysis of Enhanced Circulating Tumour Cell (CTC) Separation in a Microfluidic System with an Integrated Dielectrophoretic-Magnetophorectic (DEP-MAP) Technique

Low

Kadri

2016

Chemosensors

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Abstract:Cell based cancer analysis is an important analytic method to monitor cancer progress on stages by detecting the density of circulating tumour cells (CTCs) in the blood. Among the existing microfluidic techniques, dielectrophoresis (DEP), which is a label-free detection method, is favoured by researchers. However, because of the high conductivity of blood as well as the rare presence of CTCs, high separation efficiency is difficult to achieve in most DEP microdevices. Through this study, we have proposed a strategy to improve the isolation performance, as such by integrating a magnetophoretic (MAP) platform into a DEP device. Several important aspects to be taken into MAP design consideration, such as permanent magnet orientation, magnetic track configuration, fluid flow parameter and separation efficiency, are discussed. The design was examined and validated by numerical simulation using COMSOL Multiphysics v4.4 software (COMSOL Inc., Burlington, MA, USA), mainly presented in three forms: surface plot, line plot, and arrow plot. From these results, we showed that the use of a single permanent magnet coupled with an inbuilt magnetic track of 250 µm significantly strengthens the magnetic field distribution within the proposed MAP stage. Besides, in order to improve dynamic pressure without compromising the uniformity of fluid flow, a wide channel inlet and a tree-like network were employed. When the cell trajectory within a finalized MAP stage is computed with a particle tracing module, a high separation efficiency of red blood cell (RBC) is obtained for blood samples corresponding up to a dilution ratio of 1:7. Moreover, a substantial enhancement of the CTCs' recovery rate was also observed in the simulation when the purposed platform was integrated with a planar DEP microdevice.

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Stationary Scattering in Planar Confining Geometries

Morfonios

Schmelcher

2016

Control of Magnetotransport in Quantum Billiards

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Hybrid magnetic-semiconductor nanostructures

Cited by 12 publications

References 283 publications

Giant magnetoresistance induced by magnetic barriers

Giant magnetoresistance induced by magnetic barriers

Computational Analysis of Enhanced Circulating Tumour Cell (CTC) Separation in a Microfluidic System with an Integrated Dielectrophoretic-Magnetophorectic (DEP-MAP) Technique

Stationary Scattering in Planar Confining Geometries

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