Abstract
As a step toward applications for biosensors, we characterized the electrical properties of λDNA molecules via their current–voltage characteristics and complex impedance plots. λDNA molecules were introduced to a microfluidic device using a microchannel (depth, 50 μm; width, 500 μm; length, 10 mm) and electrostatically stretched and immobilized in the 14-μm gap between two triangular-shaped microlithographed aluminum electrodes by applying an alternating voltage of 1 MHz and 20 Vp–p. The aligned λDNA showed nonlinear current–voltage characteristics. From the complex impedance plots of the λDNA molecules, an equivalent circuit was obtained as a series connection of two resistance–capacitance parallel circuits. Finally, we demonstrated that the electrical characteristics of the λDNA between the electrodes varied with the number of immobilized λDNA molecules.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
