Abstract:A novel approach of fabricating 2-D arrays of SiO 2 beads on a Si surface using the Langmuir-Blodgett (LB) technique is reported. The corrugated surfaces were tested as a separation media for surface electrophoresis of DNA molecules. The measured electrophoretic mobility for λ -DNA is only 20% slower than previously measured on a flat Si wafer. This indicates that the separation mechanism is due to surface friction rather than biased reptation as reported by Tinland in the three dimensional Silica bead matrix … Show more
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