Morphological changes of gold nanoparticles due to adsorption onto silicon substrate and oxygen plasma treatment

Winkler, Katarzyna; Wojciechowski, Tomasz; Liszewska, Malwina; Górecka, Ewa; Fiałkowski, Marcin

doi:10.1039/c4ra00507d

Cited by 18 publications

(17 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In summary, there have been conflicting reports on the impact of oxygen plasma on nanoparticles, but our findings support other observations that oxygen plasma treatments are detrimental to nanoparticles [24,25]. Moreover, we propose the use of UVO to clean heterogeneous Au nanoparticle surfaces with the additional benefit of being a superior technique for preparation of thin film deposition when a hydrophilic surface is required, as in the case of atomic layer deposition of alumina.…”

Section: Discussionsupporting

confidence: 86%

“…However, the comparative impact of these techniques on nanostructured surfaces with different materials exposed (e.g., gold and SiO2) has yet to be examined to the same extent as has been observed for uniform Au films or silicon surfaces. Recently, reports have indicated that oxygen plasma can be destructive to Au nanoparticles (AuNPs) [24,25] but others have argued that the plasma does not alter the AuNP surface or damage only happens under very aggressive conditions [21]. In the case of UVO cleaning of surfaces, early studies were conducted for continuous planar metal films, but the assessment of the impact of UVO cleaning has not been extended to nanostructured surfaces.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface preparation of gold nanostructures on glass by ultraviolet ozone and oxygen plasma for thermal atomic layer deposition of Al2O3

Lancaster

Shumaker‐Parry

2016

Thin Solid Films

View full text Add to dashboard Cite

Thin film deposition to create robust plasmonic nanomaterials is a growing area of research. Plasmonic nanomaterials have tunable optical properties and can be used as substrates for surface-enhanced spectroscopies. Due to the surface sensitivity and the dependence of the nearfield behavior on structural details, degradation from cleaning or spectroscopic interrogation causes plasmonic nanostructures to lose distinctive localized surface plasmon resonances or exhibit diminished optical near-field enhancements over time. To decrease degradation, conformal thin films of alumina are deposited on nanostructured substrates using atomic layer deposition. While film growth on homogenous surfaces has been studied extensively, atomic layer deposition-based film growth on heterogeneous nanostructured surfaces is not well characterized. In this report, we have evaluated the impact of oxygen plasma and ultraviolet ozone pre-treatments on Au nanoparticle substrates for thin film growth by monitoring changes in plasmonic response and nanostructure morphology. We have found that ultraviolet ozone is more effective than oxygen plasma for cleaning gold nanostructured surfaces, which is in contrast to bulk films of the same material. Our results show that oxygen plasma treatment negatively impacts the nanostructure and alumina coating based on both scanning electron microscopy analysis of morphology and changes in the plasmonic response.

show abstract

Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Surface preparation of gold nanostructures on glass by ultraviolet ozone and oxygen plasma for thermal atomic layer deposition of Al2O3

Lancaster

Shumaker‐Parry

2016

Thin Solid Films

View full text Add to dashboard Cite

show abstract

“…Note that at nanometer scale the melting point of gold is much lower than the bulk gold (1064 °C). In addition, the plasma treatment itself has been reported to induce morphological changes in gold . In our case, probably the pearling effect already took place during the oxygen plasma cleaning since the chamber temperature increases during the procedure.…”

Section: Resultsmentioning

confidence: 69%

Gold Nanowire Fabrication with Surface‐Attached Lipid Nanotube Templates

Jajcevic

Chami

Sugihara

2016

Small

View full text Add to dashboard Cite

A high-throughput approach to fabricate gold nanowires on surfaces with a lipid nanotube template is demonstrated. Streptavidin-coated gold nanoparticles are attached to the biotin-tagged lipid nanotubes. After the chemical fixation, the samples are dried and treated with oxygen plasma to remove the organic template and connect the particles. The created nanowires are characterized by cryo-transmission electron microscopy, atomic force microscopy, and electrical measurements.

show abstract

“…We assume the diffusion coefficients to follow the power law: = 1 − , where 1 is the diffusion coefficient of adatoms and is a scaling exponent. Such a law provides a good approximation for several adlayer-substrate systems 31,43,[61][62][65][66][67][68][69] . To calculate the projected radius and the surface area of the clusters, we model them as spherical caps 44 characterized by a contact angle = 2 tan −1 ( / ) , where H/R is the height-to-radius ratio.…”

Section: Thementioning

confidence: 97%

Area-Selective Deposition of Ruthenium by Area-Dependent Surface Diffusion

Grillo

Soethoudt²,

Marques³

et al. 2020

Preprint

View full text Add to dashboard Cite

<div> <div> <p>Area-selective deposition (ASD) enables the growth of materials on target regions of patterned substrates for applications in fields ranging from microelectronics to catalysis. Selectivity is often achieved through surface modifications aimed at suppressing or promoting the adsorption of precursor molecules. Here we show, instead, that varying the surface composition can enable ASD by affecting surface diffusion rather than adsorption. Ru deposition from (carbonyl)- (alkylcyclohexadienyl)Ru and H<sub>2</sub> produces smooth films on metal nitrides and nanoparticles on SiO<sub>2</sub>. The latter form by surface diffusion and aggregation of Ru adspecies. Kinetic modeling shows that changing the surface termination of SiO<sub>2</sub> from -OH to -CH<sub>3</sub>, and thus its surface energy, leads to larger and fewer nanoparticles because of a 1000-fold increase in surface diffusion rates. Kinetic Monte Carlo simulations show that even surface diffusion alone can enable ASD because adspecies tend to migrate from high- to low-diffusivity regions. This is corroborated by deposition experiments on 3D TiN-SiO<sub>2</sub> nanopatterns, which are consistent with Ru migrating from SiO<sub>2</sub> to TiN. Such insights not only have implications for the interpretation of experimental results but may also inform new ASD protocols, based on chemical vapor and atomic layer deposition, that take advantage of surface diffusion.</p></div></div>

show abstract

Morphological changes of gold nanoparticles due to adsorption onto silicon substrate and oxygen plasma treatment

Abstract: We present comprehensive studies of the morphological evolution that gold nanoparticles undergo during their adsorption on a solid substrate and subsequent oxygen plasma treatment.

Cited by 18 publications

References 44 publications

Surface preparation of gold nanostructures on glass by ultraviolet ozone and oxygen plasma for thermal atomic layer deposition of Al2O3

Surface preparation of gold nanostructures on glass by ultraviolet ozone and oxygen plasma for thermal atomic layer deposition of Al2O3

Gold Nanowire Fabrication with Surface‐Attached Lipid Nanotube Templates

Area-Selective Deposition of Ruthenium by Area-Dependent Surface Diffusion

Contact Info

Product

Resources

About