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Electrical characterization of DNA molecules in solution using impedance measurements
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10.1063/1.2908203
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    Affiliations:
    1 Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
    2 School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA
    3 Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
    4 Molecular Microbiology Laboratory and Department of Food Science, Purdue University, West Lafayette, Indiana 47907, USA
    a) Present address: Department of Mechanical Engineering, Indian Institute of Technology, Kanpur, India.
    b) Present address: Micro and Nonotechnology Laboratory, Department of Electrical and Computer Engineering and Bioengineering, University of Illinois at Urbana-Champaign. Author to whom correspondence should be addressed. Electronic mail: rbashir@uiuc.edu.
    Appl. Phys. Lett. 92, 143902 (2008); http://dx.doi.org/10.1063/1.2908203
/content/aip/journal/apl/92/14/10.1063/1.2908203
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/14/10.1063/1.2908203

Figures

Image of FIG. 1.
FIG. 1.

Impedance magnitude as a function of frequency for (a) variation in concentration of dsDNA molecule, and (b) variation in size of dsDNA where concentration of each molecule was .

Image of FIG. 2.
FIG. 2.

Impedance versus frequency for the different size ethanol-precipitated dsDNA molecules.

Image of FIG. 3.
FIG. 3.

(a) Left: drawn schematic of the device used for the measurements. Right: equivalent circuit model of the solution with DNA molecules. (b) Extracted solution dielectric capacitance as a function of molecule concentration. (c) Extracted solution conductance as a function of molecule concentration.

Tables

Generic image for table
Table I.

Extracted circuit model parameters for varying concentration and size of DNA molecules.

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/content/aip/journal/apl/92/14/10.1063/1.2908203
2008-04-11
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrical characterization of DNA molecules in solution using impedance measurements
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/14/10.1063/1.2908203
10.1063/1.2908203
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