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Gold coating of micromechanical DNA biosensors by pulsed laser deposition
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10.1063/1.4761986
/content/aip/journal/jap/112/8/10.1063/1.4761986
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/8/10.1063/1.4761986

Figures

Image of FIG. 1.
FIG. 1.

AFM height images (2 × 2 μm2) of the surfaces of gold deposits obtained by PLD at 213 nm and 2 J/cm2 after: (a) 3000, (b) 6000, (c) 12 000, (d) 18 000, (e) 24 000, and (f) 144 000 pulses.

Image of FIG. 2.
FIG. 2.

XRD patterns of gold target and deposit grown by PLD at 213 nm and 2 J/cm2 with 144 000 pulses.

Image of FIG. 3.
FIG. 3.

(a) AFM topography image (1 × 1 μm2) of a gold film deposited by PLD at 213 nm and 2 J/cm2 with 144 000 pulses on the cantilever array surface. The region selected in (a) by a white square is displayed in (b) in a 3D representation.

Image of FIG. 4.
FIG. 4.

Deflection of two gold-coated cantilevers as a function of temperature. The symbols (squares for cantilever 1 and circles for cantilever 2) represent experimental data and the lines correspond to linear fittings. The deflection of the micromechanical sensors was measured with respect to the deflection at the initial experimental temperature (22 °C). The temperature was changed at a rate of about 0.14 °C per minute.

Image of FIG. 5.
FIG. 5.

Surface stress variation during a hydration cycle for five cantilevers of one gold-coated micromechanical sensor, after gold coating with PLD (squares) and after DNA hybridization (circles). The surface stress variations were measured with respect to the surface stress at RH 0%. RH was changed at a rate of about 1% per minute.

Tables

Generic image for table
Table I.

Thickness and roughness (Ra ) of the gold deposits prepared by PLD at the different irradiation conditions.

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/content/aip/journal/jap/112/8/10.1063/1.4761986
2012-10-25
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Gold coating of micromechanical DNA biosensors by pulsed laser deposition
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/8/10.1063/1.4761986
10.1063/1.4761986
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