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Probing dielectrophoretic force fields with metallic carbon nanotubes
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10.1063/1.2372771
/content/aip/journal/apl/89/18/10.1063/1.2372771
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/18/10.1063/1.2372771

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Type structure on insulating quartz substrate. (a) Top view SEM image showing a homogeneous distribution of metallic SWNTs in the electrode gap. (b) Cross sectional plot of the magnitude of the electric field . The applied potentials and the dielectric materials are indicated in the drawing. (c) The normal component of the dielectric force acting on metallic SWNTs is proportional to , which is plotted for various heights above the substrate surface. Metallic SWNTs feel attractive forces close to as well as far away from the substrate surface.

Image of FIG. 2.
FIG. 2.

(Color online) Type structure on conducting -type silicon substrate. (a) Top view SEM picture showing metallic SWNTs only in the vicinity of the electrodes. (b) Cross sectional plot of the magnitude of the electric field . The applied potentials and the dielectric materials are indicated in the drawing. Note the thick oxide layer. (c) The normal component of the dielectric force acting on metallic SWNTs is proportional to , which is plotted for various heights above the substrate surface. In the center of the electrode gap at small heights , leading to a repulsion of metallic SWNTs from the surface. The area of repulsive forces for a height is indicated in (a) by the dashed white lines.

Tables

Generic image for table
Table I.

Minimum oxide thickness required to avoid repulsion of metallic SWNTs ( at height) from the midpoint of the electrode gap, given as a function of the electrode gap size and of the dielectric solvent used for the dielectrophoretic deposition.

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/content/aip/journal/apl/89/18/10.1063/1.2372771
2006-11-03
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Probing dielectrophoretic force fields with metallic carbon nanotubes
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/18/10.1063/1.2372771
10.1063/1.2372771
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