Sputtered Ag thin films with modified morphologies: Influence on wetting property

Dutheil, Perrine; Thomann, Anne-Lise; Lecas, Thomas; Brault, Pascal; Vayer, Marylène

doi:10.1016/j.apsusc.2015.04.052

Cited by 17 publications

(8 citation statements)

References 33 publications

(52 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measured values of R f for the films with ion currents 0.5, 0.7, 0.9, 1.1, 1.3, and 1.5 nA are found to be 1.19, 1.25, 1.278, 1.318, 1.368, and 1.625, respectively. From the literature, 41,59 the water contact angle value for the smooth Ag film was found to be ∼95°. Applying this value along with the roughness factor of the films, we can calculate the Wenzel's theoretical contact angle using eq 11.…”

Section: Resultsmentioning

confidence: 99%

Wettability Transition on the Fractal Surface Developed by Size-Selected Ag Nanoclusters

et al. 2021

View full text Add to dashboard Cite

Surface morphology and wetting property of silver nanocluster-deposited films have been comprehensively investigated. A gas aggregation-type magnetron sputtering process is used to produce Ag nanoclusters, and the films are prepared by varying the cluster ion currents. The morphological result suggests that the deposited clusters agglomerate over the surface and also the overall size distribution is affected with increasing ion current. The morphological data are used to characterize various statistical parameters of the surface such as the interface width, autocorrelation function, power spectral density function, and fractal dimensions of the films. The X-ray photoelectron spectroscopy study reveals that the produced Ag nanostructures are made of pure metallic silver, and the total atomic concentration of silver on the surface increases with the increase of cluster ion currents. Wettability study of the films reveals that the morphological parameters along with the changing surface chemistry influenced the wetting property of the films. A sudden transition in surface wettability from hydrophilic to hydrophobic is observed for the films measured via water contact angle measurements. The comparison with the theoretical values suggests that the nanostructures produced for higher ion currents follow the Wenzel’s model. Finally, a correlation between the fractal dimension and the water contact angle values has been observed.

show abstract

Section: Resultsmentioning

confidence: 99%

Wettability Transition on the Fractal Surface Developed by Size-Selected Ag Nanoclusters

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In the case of adsorption, its uniformity, specificity, adsorbed molecule conformation change, and release is driven by hydrophobicity. Hydrophobic behavior was observed by two silver sputtered films with various roughness from 3 to 33 nm thick were prepared by Dutheil et al 71 When the non-continuous layer was prepared, hydrophilic behavior was observed. 71 Surface energies of the low silica aerogels were modified by Parvathy Rao et al 17 using various surface modification agents.…”

Section: Self-assembled Surface Modification For Adhesionmentioning

confidence: 99%

“…Hydrophobic behavior was observed by two silver sputtered films with various roughness from 3 to 33 nm thick were prepared by Dutheil et al 71 When the non-continuous layer was prepared, hydrophilic behavior was observed. 71 Surface energies of the low silica aerogels were modified by Parvathy Rao et al 17 using various surface modification agents. They obtained states of superhydrophobicity and water drop contact angle of 154°.…”

Section: Self-assembled Surface Modification For Adhesionmentioning

confidence: 99%

New insights into hydrophobicity at nanostructured surfaces: Experiments and computational models

Macko

Podrojková

Oriňáková

et al. 2022

Nanomaterials and Nanotechnology

View full text Add to dashboard Cite

This review deals with different aspects of hydrophobicity at nanostructured surfaces. Theoretical and geometric effects as well as those of surface feature geometry on hydrophobicity are explored in this article. This review includes surface modification methods used to change surface hydrophobicity and effect on adhesion of cells as nano substrate. A small chapter is devoted to hydrophobicity at self-assembled monolayers as a special type of nanostructured surface. To the different models describing hydrophobicity is devoted one up to dated chapter. Calculation methods including quantum, density functional theory, and molecular modeling bring novel perspectives to the study of hydrophobicity at nanostructured surfaces.

show abstract

“…% of Ag (Figure b). Actually, the growth of islands has been observed for the deposition of silver alloys on silver [25]. Their growth mechanism relies on the Volmer-Weber (VW) growth mode that explains island growth.…”

Section: Morphology Of Ag-al Alloy Thin Filmmentioning

confidence: 99%

Combining PVD structuration with dealloying for the creation of a highly efficient SERS platform

Chauvin¹,

Puglisi²,

Thiry³

et al. 2022

Preprint

View full text Add to dashboard Cite

Nanostructured noble metal thin films are highly studied for their interesting plasmonic properties. The latter can be effectively used for the detection of small and highly diluted molecules by the surface-enhanced Raman scattering (SERS) effect. Regardless of impressive detection limits achieved, synthesis complexity and the high cost of gold restrict their use in devices. Here, we report on a novel two-step approach to design and fabricate efficient SERS platforms that combines the deposition of a silver-aluminum thin film with dealloying. The magnetron sputtering technique was used for the deposition of the alloy thin film to be dealloyed. After dealloying, the resulting silver nanoporous structures revealed two degrees of porosity: a macroporosity, associated to the initial alloy morphology and a nanoporosity, related to the dealloying step. The resulting nanoporous columnar structure was finely optimized by tuning the deposition (i.e., the alloy chemical composition) and dealloying (i.e., dealloying media) parameters to reach the best SERS properties. These are reported for the samples dealloyed in HCl and with 30 at.% of silver at the initial state with a detection limit down to 10-10 mol.L-1 for a solution of Rhodamine B.

show abstract

Sputtered Ag thin films with modified morphologies: Influence on wetting property

Cited by 17 publications

References 33 publications

Wettability Transition on the Fractal Surface Developed by Size-Selected Ag Nanoclusters

Wettability Transition on the Fractal Surface Developed by Size-Selected Ag Nanoclusters

New insights into hydrophobicity at nanostructured surfaces: Experiments and computational models

Combining PVD structuration with dealloying for the creation of a highly efficient SERS platform

Contact Info

Product

Resources

About