Surface plasmon resonance spectroscopy: prospects of superstrate refractive index variation for separate extraction of molecular layer parameters

Beketov, G.V.; Shirshov, Yu.M.; Shynkarenko, O. V.; Chegel, V. I.

doi:10.1016/s0925-4005(98)00081-1

Cited by 50 publications

(36 citation statements)

References 10 publications

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“…It is known that such a layer can influence the formation of an island film as well [25,26]. With this in mind, we tested SPSE technology glass plates (TF1, refraction coefficient n=1.61) with an as-sputtered gold layer (50 nm, thermally deposited in vacuum at room temperature, more details can be found in Reference [27]) three ways: (a) without an adhesion interlayer, (b) through a chromium adhesion interlayer (3 nm), and (c) through a titanium adhesion interlayer (3 nm). Monitoring of the etching reactions was performed with a two-beam spectrophotometer Unico 4802; the sample was immersed in etching composition directly in the device cell.…”

Section: Resultsmentioning

confidence: 99%

Building Interfacial Nanostructures by Size-Controlled Chemical Etching

2010

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Development of soft chemical processes for the synthesis of interfacial architectures with well-defined structural nano-motifs organized over large areas in two dimensions is an important branch of nanotechnology. The present study deals with the fabrication of gold nanostructures using size-selective chemical etching of continuous gold films on glass support with titanium and chromium adhesive layers. In this process, which is called self-passivated surface etching, a gold film is etched in the presence of citric acid, resulting in gold nanostructures adhering to the metal support. The size-controlled chemical dissolution of gold is driven by a competing reaction between self-organized passivation of surface nano-motifs by citric acid shells and soft etching by a nonoxidative composition containing hydrochloric acid and hydrogen peroxide in water. According to these results, the presence of a chemically stable adhesive layer (titanium), citric acid in solution, and agitation are critical factors to be considered. However, the nature of the adhesive layer is the most influential factor. The following technique presents a simple method for the rapid fabrication of a nanostructured gold substrate that has the ability to support both propagating and localized surface plasmon resonances simultaneously.

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Section: Resultsmentioning

confidence: 99%

Building Interfacial Nanostructures by Size-Controlled Chemical Etching

2010

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“…The measurements were carried out in 3 mM Hg(NO 3 ) 2 at pH 3 (pH was adjusted by HNO 3 ) at room temperature. The experimental SPR-spectra of the Hg-modified gold film were fitted by the theoretical model described in [15]. All reagents were of analytical grade and used as received.…”

Section: Methodsmentioning

confidence: 99%

SPR investigation of mercury reduction and oxidation on thin gold electrodes

Vasjari

Shirshov

Samoylov

et al. 2007

Journal of Electroanalytical Chemistry

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“…Glass plates (refractive index n = 1.61) with an assputtered (through an adhesive Cr interlayer 1-1.5 nm thick) gold layer 50 nm thick [7] were treated in series with ethanol, 'piranha' (mixture of 30% H 2 O 2 and 98% H 2 SO 4 in the ratio of 1:3), water, ethanol, isopropyl alcohol to remove organic contaminations.…”

Section: Methodsmentioning

confidence: 99%

Effect of microwave radiation on optical characteristics of thin gold films

Boltovets¹

2011

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. The possibility to use a complex of chemical and physical factors to form sensor surface with tunable properties was considered. It was demonstrated that the simultaneous treatment of thin gold films with guanidine thiocyanate and microwave radiation results in changes in the width of the surface plasmon resonance curve, its amplitude and position of its minimum. Thereby, the combination of these two factors can allow obtaining surface structures with controllable parameters.

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Surface plasmon resonance spectroscopy: prospects of superstrate refractive index variation for separate extraction of molecular layer parameters

Cited by 50 publications

References 10 publications

Building Interfacial Nanostructures by Size-Controlled Chemical Etching

Building Interfacial Nanostructures by Size-Controlled Chemical Etching

SPR investigation of mercury reduction and oxidation on thin gold electrodes

Effect of microwave radiation on optical characteristics of thin gold films

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