Now showing items 1-10 of 1146
Plasmonic titania photocatalysts active under UV and visible light irradiation: influence of gold amount, size and shape
Plasmonic titania photocatalysts were prepared by titania modification with gold by photodeposition. Photodeposition method was found to be profitable since during only 15 minutes of irradiation the complete gold precursor ...
The mirrored triangles illusion: on the perceived distance between triangles in mirror image arrangement
(Universität Ulm, 2017-10-18)
The mirrored triangles illusion is described and investigated. Two black isosceles triangles are arranged symmetrically with respect to a vertical plane such that the apices face each other. While keeping their distance ...
Optimizing the design of GaAs/AlGaAs thin-film waveguides for integrated mid-infrared sensors
(Universität Ulm, 2016-06)
Optical simulations of GaAs/AlGaAs thin-film waveguides were performed for investigating the dependence of the modal behavior on waveguide geometry and the resulting analytical sensitivity. Simulations were performed for ...
Electron radiation damage mechanisms in 2D MoSe2
(Universität Ulm, 2017-01)
The contributions of different damage mechanisms in single-layer MoSe2 were studied by investigating different MoSe2/graphene heterostructures by the aberration-corrected high–resolution transmission electron microscopy ...
Simultaneous determination of monoatomic ions via infrared attenuated total reflection spectroscopy in aqueous solution at different temperatures
(Universität Ulm, 2016)
In this study, monoatomic and thus IR-inactive ions were determined via infrared attenuated total reflection (IR-ATR) spectroscopy including Cl(-), Na(+), Mg(2+), Ca(2+), K(+) and Br(-), next to the IR-active ion [Formula: ...
Towards on-chip mid-infrared sensors
(Universität Ulm, 2016-04-15)
This Feature highlights recent advances on mid-infrared thin-film waveguide technology and on-chip photonics facilitating next-generation label-free chem/bio sensor and assay platforms. Complemented by more recent advancements ...
A novel chemometric classification for FTIR spectra of mycotoxin-contaminated maize and peanuts at regulatory limits
(Universität Ulm, 2016)
The rapid identification of mycotoxins such as deoxynivalenol and aflatoxin B1 in agricultural commodities is an ongoing concern for food importers and processors. While sophisticated chromatography-based methods are well ...
In-situ monitoring of additives during CO2 gas hydrate formation
(Universität Ulm, 2016-07-05)
Research activities on the reduction of carbon dioxide emissions via effective carbon capture and storage (CCS) techniques are steadily increasing with the concept of storing CO2 as hydrates among the most prominently ...
Advancements in IR spectroscopic approaches for the determination of fungal derived contaminations in food crops
(Universität Ulm, 2015)
Infrared spectroscopy is a rapid, nondestructive analytical technique that can be applied to the authentication and characterization of food samples in high throughput. In particular, near infrared spectroscopy is commonly ...
Infrared spectroscopy on the role of surfactants during methane hydrate formation
(Universität Ulm, 2017)
Gas hydrates are ice-like compounds consisting of a rigid water framework hosting small molecules inside crystal cavities. In the present study, a gas hydrate autoclave that enables precise control and observation of ...