Quantitative evolution studies of particle separation, size and shape for vapour-deposited ultrathin gold films on glass substrates

Norrman, S.; Andersson, T. G.; Petö, G.; Somogyi, Sz.

doi:10.1016/0040-6090(81)90330-8

Cited by 26 publications

(14 citation statements)

References 16 publications

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“…Therefore, the exchange through the thinner layers is much easier, hence leading to faster kinetics. This hypothesis is also supported by the work of Norrman et al, [44] who observed that thick Au overlayers on glass have more surface coverage than thin Au layers. Furthermore, we observed that the rate of MeOH entering the etalon, via diffusion through the Au overlayer or the edges, increases as a function of increasing overlayer thickness.…”

Section: Pnipam Microgel Based Etalonssupporting

confidence: 77%

Color-Tunable Etalons Assembled from Poly (N-Isopropylacrylamide) Based Microgels

Serpe

2012

Polymers

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Photonic materials (PMs) that are capable of manipulating and controlling light in systems have immense potential for the computing and communications industries. These materials are formed by assembling components of differing refractive indices in a periodic array. Light then interacts with this assembly, which results in constructive and destructive interference, and hence color. While many three-dimensional PMs have been reported, and have the most potential for the applications mentioned above, one-dimensional PMs have a multitude of potential uses, e.g., light filtration. In this review, we focus on one-dimensional PMs; specifically poly (N-isopropylacrylamide) microgel based etalons. The etalons can be fabricated to exhibit a single bright color, and because the diameter of the microgels is dependent on temperature and pH, the mirror-mirror spacing can be dynamically tuned; therefore the etalon's color is dynamically tunable.

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Section: Pnipam Microgel Based Etalonssupporting

confidence: 77%

Color-Tunable Etalons Assembled from Poly (N-Isopropylacrylamide) Based Microgels

Serpe

2012

Polymers

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“…The origin of this aspect is the formation during growth of islands that spread until they coalesce. 8,9 The logical consequence is a weak correlation between surface structures, that is, a wide-ranging statistical distribution of the surface irregularities.…”

Section: Introductionmentioning

confidence: 99%

Extended statistical analysis of rough growth fronts in gold films prepared by thermal evaporation

et al. 1999

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The surface roughness of evaporated gold films has been studied by scanning tunneling microscopy and a frequency analysis method that uses the whole image. The power spectrum S(q,t) presents a clear q Ϫ␥ dependence in the region of high frequencies and the interface width of the films follows a t ␤ behavior. The values obtained for the two exponents (␥ϭ4.1 and ␤ϭ0.26) agree with the theoretical predictions (␥ϭ4 and ␤ϭ0.25) for a process controlled by pure surface diffusion in the thickness range studied. The power spectrum at high frequencies is similar for different film thickness describing a phenomenon free from anomalous scaling. We also conclude that dimensional analysis of profiles presents some practical problems in its application. On the other hand, frequency analysis of the whole image allows us to obtain a reliable determination of surface roughness. ͓S0163-1829͑99͒00528-7͔

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“…We attributed this to thickness-dependent Au film roughness effects. It has been reported that the island structure of unannealed Au films would increase in size with an increase in its nominal thickness, ultimately forming a near-percolated film at 7.5 nm. , Thus, an island structure would appear in the initial stages of deposition instead of a film. , With more Au atoms being deposited, a film started to form and the roughness decreased. This was also shown in the AFM images of Au films with variable thicknesses in Rubinstein’s publication .…”

Section: Resultsmentioning

confidence: 99%

“…36,37 Thus, an island structure would appear in the initial stages of deposition instead of a film. 38,39 With more Au atoms being deposited, a film started to form and the roughness decreased. This was also shown in the AFM images of Au films with variable thicknesses in Rubinstein's publication.…”

Section: ■ Introductionmentioning

confidence: 99%

Enhancing the Sensitivity of Surface Plasmon Resonance Measurements Utilizing Polymer Film/Au Assemblies

Wei

Darcie

et al. 2021

Anal. Chem.

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Surface plasmon resonance (SPR) is used to infer information about a sample that is in contact with an Au-coated glass slide coupled to the SPR prism. Shifts in the angle of the "SPR minimum reflection" can be related to changes in the refractive index (and/or thickness) of the sample that is in contact with the Au film, which can then be used to determine the concentration of an analyte in that sample. Here, we show that by depositing a layer of poly(N-isopropylacrylamide-co-acrylic acid) [p(NIPAm-co-AAc)] microgel on the SPR's Au film, with a subsequent layer of Au deposited on top of the microgels, the sensitivity of SPR to changes in solution properties can be enhanced. We investigated the sensitivity of the SPR to changes in the temperature of water in contact with the SPR's Au film as a function of the microgel immobilization density and the thickness of the Au layer deposited on the microgel layer. The data revealed that the SPR's Au film densely coated with microgels, with 5 nm of Au deposited, exhibited the maximal enhancement. The plasmon coupling effect between the additional Au film on the microgels and the SPR's Au film was further confirmed by 3D finite difference time domain simulations.

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Quantitative evolution studies of particle separation, size and shape for vapour-deposited ultrathin gold films on glass substrates

Cited by 26 publications

References 16 publications

Color-Tunable Etalons Assembled from Poly (N-Isopropylacrylamide) Based Microgels

Color-Tunable Etalons Assembled from Poly (N-Isopropylacrylamide) Based Microgels

Extended statistical analysis of rough growth fronts in gold films prepared by thermal evaporation

Enhancing the Sensitivity of Surface Plasmon Resonance Measurements Utilizing Polymer Film/Au Assemblies

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