Abstract
The fabrication of nanoscale molecular devices is becoming increasinglyimportant and research into their fabrication has intensified over the last fewyears. In particular, the attachment of molecular objects onto varioussurfaces has attracted considerable attention. Here, we report a multistepsurface immobilization procedure, which allows the specific and controlledattachment of very long DNA molecules onto gold electrodes. Further,we report the effect of dielectrophoresis on these surface-bound DNAmolecules with respect to amplitude and frequency, and we show that selectedsurface-immobilized DNA molecules can be manipulated by dielectrophoresis.Finally, we investigated the use of dielectrophoresis in conjunction with themultistep surface immobilization of fluorescently labelled, surface-bound λ-DNAin a basic data-storage device.
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