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Electrical and optical characterization of DNA molecules as a function of concentration in aqueous solution
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10.1063/1.3563064
/content/aip/journal/jap/109/7/10.1063/1.3563064
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3563064
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) I-V characterization of 1 and 4 drops of an aqueous solution containing plasmid DNA, with respect to the substrate resistance.

Image of FIG. 2.
FIG. 2.

(Color online) Differential conductance of the (a) 214 bp, (b) 396 bp, (c) 1400 bp long fragments, (d) the whole plasmid as a function of the voltage.

Image of FIG. 3.
FIG. 3.

The dI/dV peak versus number of molecules for a fixed volume of sample.

Image of FIG. 4.
FIG. 4.

(Color online) Distribution of the number of adjacent AT bp between two consecutive GC bp in the pUC18 circular plasmid.

Image of FIG. 5.
FIG. 5.

(Color online) Experimental setup exploited for optical reflection characterizations of biological material containing DNA plasmids.

Image of FIG. 6.
FIG. 6.

(Color online) (a) Reflectance spectra of a dried sample obtained from plasmid DNA solutions with concentration of 1.0 μg/μl and 1.7 μg/μl, deposited on a Si substrate and (b) typical optical microscope image of a dried sample.

Image of FIG. 7.
FIG. 7.

(Color online) Comparison of optical reflectance at λ = 260 nm between dried samples of plasmid DNA obtained from solutions with different concentrations (1.0 μg/μl and 1.7 μg/μl, respectively), deposited on a Si substrate.

Image of FIG. 8.
FIG. 8.

(Color online) (a) Typical optical microscope image of a dried sample of biological solution containing circular plasmids of DNA deposited on a Si/SiO2 substrate and (b) reflectance spectra of dried sample of DNA obtained from solutions with concentration 1.0 μg/μl and 1.7 μg/μl, deposited on a Si/SiO2 substrate.

Image of FIG. 9.
FIG. 9.

(Color online) Fringe visibility calculated in correspondence of the first and second maximum of reflectance spectra for biological samples obtained from DNA concentrations of 1.0 μg/μl and 1.7 μg/μl.

Image of FIG. 10.
FIG. 10.

(Color online) Optical microscope images of a pUC18 dried sample deposited on a Si/SiO2 substrate, (a) before and (b) after illumination with visible light.

Image of FIG. 11.
FIG. 11.

(Color online) Reflectance spectra variation of a pUC18 dried sample (with concentration 1.0 μg/μl) under UV-VIS light illumination.

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/content/aip/journal/jap/109/7/10.1063/1.3563064
2011-04-08
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrical and optical characterization of DNA molecules as a function of concentration in aqueous solution
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3563064
10.1063/1.3563064
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