Nanometer-scale oxidation of Si(100) surfaces by tapping mode atomic force microscopy

Pérez‐Murano, F.; Abadal, G.; Barniol, N.; Aymerich, X.; Servat, J.; Gorostiza, Pau; Sanz, Fausto

doi:10.1063/1.360505

Cited by 88 publications

(50 citation statements)

References 14 publications

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“…Due to the larger lattice constant of oxide compared to the metal lattice constant, a thickening of the native oxide layer by LAO induces the creation of nanostructures above the surface. The formation of the nanostructures depends typically on the substrate, the degree of relative humidity [23,24], the tip shape [25], the distance between the tip and the sample [26], the tip velocity (see Fig. 2) and the applied voltage (see Fig.…”

Section: The Local Anodic Oxidation (Lao)mentioning

confidence: 99%

Creation of nanostructures to study the topographical dependency of protein adsorption

Galli

Coen

Hauert

et al. 2002

Colloids and Surfaces B: Biointerfaces

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Nanostructures of sizes comparable to protein dimensions are created on Si and Ti surfaces by local anodic oxidation (LAO) using the atomic force microscope (AFM). The characterization of the surface by X-ray photoelectron spectroscopy (XPS) reveals that this method assures a modification of the topography of the surface without a change of its chemical composition. Surfaces structured by LAO therefore represent ideal systems to study the dependence of protein adsorption on topography. We are able to visualize the created nanostructures with an AFM and successively adsorb the proteins in situ, rinse and image the new surface. The densities of adsorbed proteins on the nanostructured and neat surfaces are compared and we find that the protein arrangement depends on the underlying nanostructures, showing that proteins can ''sense'' the topography of surfaces at the nanometer scale. This result can be considered as the nanoscale analogous of the adsorption found for cell systems on micrometer structures.

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Section: The Local Anodic Oxidation (Lao)mentioning

confidence: 99%

Creation of nanostructures to study the topographical dependency of protein adsorption

Galli

Coen

Hauert

et al. 2002

Colloids and Surfaces B: Biointerfaces

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“…[7][8][9][10][11][12][13][14] Recently this field has experienced a renovated interest. For one side, several results have contributed to an increased understanding of the oxidation mechanism in silicon surfaces 15,16 and its kinetics.…”

Section: Introductionmentioning

confidence: 99%

Patterning of silicon surfaces with noncontact atomic force microscopy: Field-induced formation of nanometer-size water bridges

García¹,

Calleja²,

Rohrer³

1999

Journal of Applied Physics

198

156

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Nanometer-size water bridges have been used to confine the oxidation of silicon surfaces with a noncontact atomic force microscope. The formation of a water bridge between two surfaces separated by a gap of a few nanometers is driven by the application of an electrical field. Once a liquid bridge is formed, its length and neck diameter can be modified by changing the tip-sample separation. The liquid bridge provides the ionic species and the spatial confinement to pattern Si͑100͒ surfaces in noncontact force microscopy. The method is applied to write arrays of several thousands dots with a periodicity of 40 nm and an average width of 10 nm.

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“…The same tip with a negative bias produced typical LAO patterns on bare regions of the Si substrate (see between points C and D in Fig. 1(b)), where the height is only ~2.5 nm, as expected [24]. Repeated AFM imaging of the region revealed that the raised structures exhibit a time-dependent behavior (Figs.…”

Section: Resultsmentioning

confidence: 84%

Electrocondensation and evaporation of attoliter water droplets: Direct visualization using atomic force microscopy

Kurra

Scott

2010

Nano Res.

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Working with a biased atomic force microscope (AFM) tip in the tapping mode under ambient atmosphere, attoliter (10 -18 L) water droplet patterns have been generated on a patterned carbonaceous surface. This is essentially electrocondensation of water leading to charged droplets, as evidenced from electrostatic force microscopy measurements. The droplets are unusual in that they exhibit a highly corrugated surface and evaporate rather slowly, taking several tens of minutes. KEYWORDSElectrocondensation, attoliter water droplets, biased atomic force microscope (AFM) lithography, electron beam induced deposition, carbonaceous deposition

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Nanometer-scale oxidation of Si(100) surfaces by tapping mode atomic force microscopy

Cited by 88 publications

References 14 publications

Creation of nanostructures to study the topographical dependency of protein adsorption

Creation of nanostructures to study the topographical dependency of protein adsorption

Patterning of silicon surfaces with noncontact atomic force microscopy: Field-induced formation of nanometer-size water bridges

Electrocondensation and evaporation of attoliter water droplets: Direct visualization using atomic force microscopy

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