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View article: Nanostructures for in-situ surface-enhanced Kretschmann-Raether ellipsometry
Nanostructures for in-situ surface-enhanced Kretschmann-Raether ellipsometry Open
Spectroscopic ellipsometry is a sensitive and optical model-supported quantitative tool to monitor interfaces. In this work, solid-liquid interfaces are studied using the Kretschmann-Raether configuration for biosensing applications. The i…
View article: Spectroscopic ellipsometry investigation of free liquid-liquid and liquid-air interfaces
Spectroscopic ellipsometry investigation of free liquid-liquid and liquid-air interfaces Open
As ellipsometry capabilities gain wider publicity there is a remarkable interest in using the technique for unusual material characterizations. In the past decades, the possibility of non-destructive, contactless investigations regarding t…
View article: Optimization of Plasmonic Gold Nanoparticle Concentration in Green LED Light Active Dental Photopolymer
Optimization of Plasmonic Gold Nanoparticle Concentration in Green LED Light Active Dental Photopolymer Open
Gold nanoparticles (AuNPs) display surface plasmon resonance (SPR) as a result of their irradiation at a targeted light frequency. SPR also results in heat production that increases the temperature of the surrounding environment, affecting…
View article: A Rational Fabrication Method for Low Switching-Temperature VO2
A Rational Fabrication Method for Low Switching-Temperature VO2 Open
Due to its remarkable switching effect in electrical and optical properties, VO2 is a promising material for several applications. However, the stoichiometry control of multivalent vanadium oxides, especially with a rational deposition tec…
View article: In-Situ Control of Defect Dynamics By Ellipsometry During Ion Implantation – Evolution of Disorder and Cavity Structure in Single-Crystalline Ge During Implantation of Sb Ions
In-Situ Control of Defect Dynamics By Ellipsometry During Ion Implantation – Evolution of Disorder and Cavity Structure in Single-Crystalline Ge During Implantation of Sb Ions Open
Ion implantation has been a key technology in microelectronics and generally, for the controlled surface modification of materials for tribology, biocompatibility, corrosion resistance and many more. In this work in-situ spectroscopic elli…
View article: Membrane-Based <i>In Situ</i> Mid-Infrared Spectroscopic Ellipsometry: A Study on the Membrane Affinity of Polylactide-<i>co</i>-glycolide Nanoparticulate Systems
Membrane-Based <i>In Situ</i> Mid-Infrared Spectroscopic Ellipsometry: A Study on the Membrane Affinity of Polylactide-<i>co</i>-glycolide Nanoparticulate Systems Open
Mid-infrared (IR) ellipsometry of thin films and molecule layers at solid-liquid interfaces has been a challenge because of the absorption of light in water. It has been usually overcome by using configurations utilizing illumination throu…
View article: Bloch surface waves biosensing in the ultraviolet wavelength range – Bragg structure design for investigating protein adsorption by in situ Kretschmann-Raether ellipsometry
Bloch surface waves biosensing in the ultraviolet wavelength range – Bragg structure design for investigating protein adsorption by in situ Kretschmann-Raether ellipsometry Open
We designed a Bragg mirror structure with an SiO2 top layer to create a resonance in the ultraviolet wavelength range, near the absorption peak position of various proteins. We demonstrate that the wavelength of enhanced sensitivity can be…
View article: Smart gas dosage by a peristaltic pump for reactive RF sputtering of composition spread combinatorial hafnium-oxy-nitride layers
Smart gas dosage by a peristaltic pump for reactive RF sputtering of composition spread combinatorial hafnium-oxy-nitride layers Open
Thin metal-oxy-nitride layers are widely used for wavelength selective optical coatings. We aimed to prepare composition spread metal-oxy-nitride combinatorial layers by reactive radiofrequency sputtering for a highly efficient characteriz…
View article: Sensing Layer for Ni Detection in Water Created by Immobilization of Bioengineered Flagellar Nanotubes on Gold Surfaces
Sensing Layer for Ni Detection in Water Created by Immobilization of Bioengineered Flagellar Nanotubes on Gold Surfaces Open
The environmental monitoring of Ni is targeted at a threshold limit value of 0.34 μM, as set by the World Health Organization. This sensitivity target can usually only be met by time-consuming and expensive laboratory measurements. There i…
View article: Swift heavy ion irradiated planar waveguides in a rare earth doped tungsten Tellurite glass and a tungstate crystal
Swift heavy ion irradiated planar waveguides in a rare earth doped tungsten Tellurite glass and a tungstate crystal Open
Planar optical waveguides were designed and fabricated in an Er-doped Tungsten-Tellurite oxide glass and in a KDy (WO4)2 crystal by swift heavy ion irradiation. 12.5 MeV Au5+ ions were used in the first case and 10.5 MeV N4+ ions in the se…
View article: Refractive Index Variation of Magnetron-Sputtered a-Si1−xGex by “One-Sample Concept” Combinatory
Refractive Index Variation of Magnetron-Sputtered a-Si1−xGex by “One-Sample Concept” Combinatory Open
Gradient a-Si1−xGex layers have been deposited by ”one-sample concept” combinatorial direct current (DC) magnetron sputtering onto one-inch-long Si slabs. Characterizations by electron microscopy, ion beam analysis and ellipsometry show th…
View article: Nanophotonics of biomaterials and inorganic nanostructures
Nanophotonics of biomaterials and inorganic nanostructures Open
Optical methods have been used for the sensitive characterization of surfaces and thin films for more than a century. The first ellipsometric measurement was conducted on metal surfaces by Paul Drude in 1889. The word 'ellipsometer' was fi…
View article: Plasmon-enhanced two-channel in situ Kretschmann ellipsometry of protein adsorption, cellular adhesion and polyelectrolyte deposition on titania nanostructures
Plasmon-enhanced two-channel in situ Kretschmann ellipsometry of protein adsorption, cellular adhesion and polyelectrolyte deposition on titania nanostructures Open
Plasmon-enhanced in situ spectroscopic ellipsometry was realized using the Kretschmann geometry. A 10-μL flow cell was designed for multi-channel measurements using a semi-cylindrical lens. Dual-channel monitoring of the layer formation of…
View article: Multiple angle of incidence, spectroscopic, plasmon-enhanced, internal reflection ellipsometry for the characterization of solid-liquid interface processes
Multiple angle of incidence, spectroscopic, plasmon-enhanced, internal reflection ellipsometry for the characterization of solid-liquid interface processes Open
A semi-cylindrical lens in Kretschmann geometry combined with a flow cell was designed for a commercial rotating compensator ellipsometer to perform internal reflection spectroscopic ellipsometry measurements, while allowing the use of mul…