Seeded Growth of Large-Area Arrays of Substrate Supported Au Nanoparticles Using Citrate and Hydrogen Peroxide

Landeke-Wilsmark, Björn; Nyholm, Leif; Hägglund, Carl

doi:10.1021/acs.langmuir.0c00374

Cited by 5 publications

(16 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One ALD cycle of HfO 2 (Picosun R-200, 170 ° C, 1 cycle: 5 s H 2 O, 10 s N 2 , 0.1 s tetrakis(dimethylamido)hafnium(IV), 10 s N 2 . Termination: 0.1 s H 2 O, 10 s N 2 , 5 s H 2 O) was performed on all wafers, to augment the particle–substrate adhesion, prior to applying (spin-coating, 500 rpm) and soft-baking (hotplate, 110 ° C, 10 min) a thick layer of S1813 photoresist. The purpose of the S1813 is to serve as a protective coating during the subsequent dicing (Disco DAD 361) of the wafers into 20 × 20 mm 2 sample pieces.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…As previously demonstrated, the use of atomic layer deposition (ALD) post-seed formation can be used to satisfactorily address (i). Performing as little as a single ALD cycle of HfO 2 was proven to be highly effective in preventing particle desorption without hampering subsequent metal deposition …”

Section: Introductionmentioning

confidence: 99%

“…Two protocols , in particular caught our attention due to their (i) demonstrated ability to generate monodisperse, quasi-spherical NPs with tailored sizes within a large range (17–325 nm in diameter), (ii) rapid one-step procedure conducted at room temperature (RT), and (iii) use of relatively cheap and benign reagents. The adaptation of the growth protocol developed by Liu et al, using HAuCl 4 , trisodium citrate (“citrate”), and H 2 O 2 , has previously been investigated by us for use on arrays of surface-supported Au seed particles with encouraging results . This work is here advanced with a more rigorous, in-depth exploration of the reagent concentration parameter space coupled with quantification of various individual and collective NP features using scanning electron microscopy (SEM), digital image analysis (DIA), and spectroscopic ellipsometry (SE).…”

Section: Introductionmentioning

confidence: 99%

“…Performing as little as a single ALD cycle of HfO 2 was proven to be highly effective in preventing particle desorption without hampering subsequent metal deposition. 20 The concept of selective, electroless deposition of Au or Ag on BCP-derived arrays of surface-supported Au seed particles, with the aim of enlarging the Au seeds 21−25 or implementing core−shell nanostructures, 15,21,26,27 has been demonstrated previously. In the studies concerning Au, Au(III) was reduced to Au(0) using either hydroxylammonium chloride 21,22 or a photochemical process involving UV light 23−25 and less traditional reducing agents.…”

Section: Introductionmentioning

confidence: 99%

“…The adaptation of the growth protocol developed by Liu et al, 30 using HAuCl 4 , trisodium citrate ("citrate"), and H 2 O 2 , has previously been investigated by us for use on arrays of surface-supported Au seed particles with encouraging results. 20 This work is here advanced with a more rigorous, in-depth exploration of the reagent concentration parameter space coupled with quantification of various individual and collective NP features using scanning electron microscopy (SEM), digital image analysis (DIA), and spectroscopic ellipsometry (SE). This further allows us to model these features as functions of the growth medium composition and to identify a reagent concentration process window in which uniform, quasi-spherical NPs can be obtained.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Process Window for Seeded Growth of Arrays of Quasi-Spherical Substrate-Supported Au Nanoparticles

2021

Self Cite

View full text Add to dashboard Cite

The controlled growth of surface-supported metal nanoparticles (NPs) is essential to a broad range of applications. To this end, we explore the seeded growth of highly ordered arrays of substrate-supported Au NPs through a fully orthogonal design of experiment (DoE) scheme applied to a reaction system consisting of HAuCl4, citrate, and hydrogen peroxide. Scanning electron microscopy in combination with digital image analysis (DIA) is used to quantitatively characterize the resultant NP populations in terms of both particle and array features. The effective optical properties of the NP arrays are additionally analyzed using spectroscopic ellipsometry (SE), allowing characteristics of the localized surface plasmon resonances (LSPRs) of the arrays to be quantified. We study the dependence of the DIA- and SE-extracted features on the different reagent concentrations through modeling using multiple linear regression with backward elimination of independent variables. A process window is identified for which uniform arrays of quasi-spherical Au NPs are grown over large surface areas. Aside from reagent concentrations the system is highly sensitive to the hydrodynamic conditions during the deposition. This issue is likely caused by an Au precursor mass-transport limitation of the reduction reaction and it is found that agitation of the growth medium is best avoided to ensure a macroscopically even deposition. Parasitic homogeneous nucleation can also be a challenge and was separately studied in a full DoE scheme with equivalent growth media but without substrates, using optical tracking of the solutions over time. Conditions yielding quasi-spherical surface-supported NPs are found to also be affiliated with strong tendencies for parasitic homogeneous nucleation and thereby loss of Au precursor, but addition of polyvinyl alcohol can possibly help alleviate this issue.

show abstract

Section: Experimental Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Process Window for Seeded Growth of Arrays of Quasi-Spherical Substrate-Supported Au Nanoparticles

2021

Self Cite

View full text Add to dashboard Cite

show abstract

Surface Lattice Plasmon Resonances by Direct In Situ Substrate Growth of Gold Nanoparticles in Ordered Arrays

et al. 2022

View full text Add to dashboard Cite

frequencies of light depending on the nanoparticle size, shape, material, and local dielectric environment. [1] This localized surface plasmon resonance (LSPR) effect can confine light in subwavelength volumes, [2] resulting in the generation of an enhanced electric field. However, these resonances are typically short lived, due to intrinsic high radiative optical losses that limit the associated quality factors (<10). [3] Nonetheless, arranging plasmonic nanoparticles into ordered arrays emerged as a convenient strategy to overcome this limitation and to boost the quality factors of the system. In this configuration the optical losses associated with LSPRs can be compensated under Bragg conditions by hybridization with the scattered waves in the plane of the array close to the position of the Rayleigh-Wood anomalies. [3] This compensation generates lattice plasmon resonances, and offers an additional possibility for tuning the optical properties, depending on the angle of illumination and the geometrical parameters of the array. [3] Due to their narrow bandwidth (<2 nm) and long lifetimes, [3][4][5] lattice plasmon resonances already impact the enhancement and manipulation of light-matter interactions, [6][7][8] sensing, [9][10][11][12] displays, [13] information storage [14] and anti-reflective materials. [15] The development of a simple, scalable, and rapid technique that combines the benefits of top-down and bottom-up methods Precise arrangements of plasmonic nanoparticles on substrates are important for designing optoelectronics, sensors and metamaterials with rational electronic, optical and magnetic properties. Bottom-up synthesis offers unmatched control over morphology and optical response of individual plasmonic building blocks. Usually, the incorporation of nanoparticles made by bottom-up wet chemistry starts from batch synthesis of colloids, which requires time-consuming and hard-to-scale steps like ligand exchange and self-assembly. Herein, an unconventional bottom-up wet-chemical synthetic approach for producing gold nanoparticle ordered arrays is developed. Water-processable hydroxypropyl cellulose stencils facilitate the patterning of a reductant chemical ink on which nanoparticle growth selectively occurs. Arrays exhibiting lattice plasmon resonances in the visible region and near infrared (quality factors of >20) are produced following a rapid synthetic step (<10 min), all without cleanroom fabrication, specialized equipment, or selfassembly, constituting a major step forward in establishing in situ growth approaches. Further, the technical capabilities of this method through modulation of the particle size, shape, and array spacings directly on the substrate are demonstrated. Ultimately, establishing a fundamental understanding of in situ growth has the potential to inform the fabrication of plasmonic materials; opening the door for in situ growth fabrication of waveguides, lasing platforms, and plasmonic sensors.

show abstract

Controlling the growth of uncapped silver nanoparticles on poly methacrylic acid nanospheres: The effect of polymer’s free surface on the antimicrobial properties

Kainourgios,

Tziveleka,

Boukos

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Seeded Growth of Large-Area Arrays of Substrate Supported Au Nanoparticles Using Citrate and Hydrogen Peroxide

Cited by 5 publications

References 43 publications

Process Window for Seeded Growth of Arrays of Quasi-Spherical Substrate-Supported Au Nanoparticles

Process Window for Seeded Growth of Arrays of Quasi-Spherical Substrate-Supported Au Nanoparticles

Surface Lattice Plasmon Resonances by Direct In Situ Substrate Growth of Gold Nanoparticles in Ordered Arrays

Controlling the growth of uncapped silver nanoparticles on poly methacrylic acid nanospheres: The effect of polymer’s free surface on the antimicrobial properties

Contact Info

Product

Resources

About