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Visualization and quantification of four steps in magnetic field induced two-dimensional ordering of superparamagnetic submicron particles
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10.1063/1.3475770
/content/aip/journal/apl/97/10/10.1063/1.3475770
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/10/10.1063/1.3475770
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Bright field microscope images of particles in the (a) absence and (b) presence of field for 45 s. 2D X-DIST Y-DIST histograms are displayed (DIST in pixel). (c) Fibers disintegration upon switching off the field.

Image of FIG. 2.
FIG. 2.

Particle density (number of ) versus radial distance from each individual particle in the (a) absence and (b) presence of field. b-inset shows the schematics of field-induced self-organization of particles in the presence of field. (c) Gaussian fit of the particles distribution displayed in ‘(b)’ to determine .

Image of FIG. 3.
FIG. 3.

Time dependent evolution of Y-DIST histogram. Frames: 6, 8, 9, 15, 30, 45, 52, 53, 55, and 61 .

Image of FIG. 4.
FIG. 4.

(a) (Fiber length) vs (Counts) during chain growth. Data fitted to , rmse 0.95. With 95% confidence and . (b) “Maximum fiber length” versus time in the presence of H-field (frames 6–49). Data was fitted to , rmse 0.92. With 95% confidence and . (c) “Average particle/chain length” vs “frame number.”

Image of FIG. 5.
FIG. 5.

3D image of field-induced self-organization of particles. White line shows at which frame the field was turned “ON” and switched “OFF.” Inset: corresponding 2D image. Each of the 61 histograms have been normalized, i.e., multiplied with , where is the maximum number of objects found in any of the frames, and is the total number of objects found in the present histogram (frame ).

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/content/aip/journal/apl/97/10/10.1063/1.3475770
2010-09-09
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Visualization and quantification of four steps in magnetic field induced two-dimensional ordering of superparamagnetic submicron particles
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/10/10.1063/1.3475770
10.1063/1.3475770
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