Now showing items 1-10 of 431
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 ...
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 ...
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 ...
Towards label-free mid-infrared protein assays : in-situ formation of bare gold nanoparticles for surface enhanced infrared absorption spectroscopy of bovine serum albumin
(Universität Ulm, 2017)
Surface enhanced infrared absorption spectroscopy (SEIRAS) with attenuated total reflection (ATR) configuration has been used to determine bovine serum albumin (BSA) protein adsorbed onto bare gold nanoparticles (AuNPs). ...
Portable infrared laser spectroscopy for on-site mycotoxin analysis
(Universität Ulm, 2017-03-09)
Mycotoxins are toxic secondary metabolites of fungi that spoil food, and severely impact human health (e.g., causing cancer). Therefore, the rapid determination of mycotoxin contamination includingdeoxynivalenolandaflato ...
Mid-infrared fiberoptic evanescent field spectroscopy for in-situ monitoring of tetrahydrofuran hydrate formation and dissociation
(Universität Ulm, 2017-01-03)
Tetrahydrofuran is a relevant auxiliary molecule when storing carbon dioxide or hydrocarbons as gas hydrates. The present study demonstrates the application of in situ mid-infrared fiber-optic evanescent field absorption ...
Boron-doped diamond modified with gold nanoparticles for the characterization of bovine serum albumin protein
(Universität Ulm, 2017-07)
Boron-doped diamond (BDD) has been modified with bare gold nanoparticles (AuNPs) for the investigation of bovine serum albumin (BSA) protein films. First, the BDD electrode was amino- terminated via silanization with ...
Chem/bio sensing with non-classical light and integrated photonics
(Universität Ulm, 2017-12-06)
Modern quantum technology currently experiences extensive advances in applicability in communications, cryptography, computing, metrology and lithography. Harnessing this technology platform for chem/bio sensing scenarios ...
Towards enhanced optical sensor performance: SEIRA and SERS with plasmonic nanostars
(Universität Ulm, 2017-02-08)
We report the preparation and characterization of plasmonic chip-based systems comprising self-assembled gold nanostars at silicon substrates that enable concomitantly enhanced Raman (surface enhanced Raman spectroscopy; ...
Surface enhanced infrared absorption spectroscopy based on gold nanostars and spherical nanoparticles
(Universität Ulm, 2017-10-16)
Plasmonic anisotropic nanoparticles possess a number of hot spots on their surface due to the presence of sharp edges, tips or vertices, leading to a high electric field strength surrounding the nanostructures. In this ...