6814 Suchergebnisse für: „“
Distinction of Ecuadorian varieties of fermented cocoa beans using Raman spectroscopy
Cocoa (Theobroma cacao) is a crop of economic importance. In Ecuador, there are two predominant cocoa varieties: National and CCN-51. The National variety is the most demanded, since its cocoa beans are...
PublikationenIntegration of 3D multimodal imaging data of a head and neck cancer and advanced feature recognition
In the last years, matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDIMSI) became an imaging technique which has the potential to characterize complex tumor tissue. The combination...
PublikationenIndex matching at the nanoscale: light scattering by core–shell Si/SiOx nanowires
Silicon nanowires (SiNWs) show strong resonant wavelength enhancement in terms of absorption as well as scattering of light. However, in most optoelectronic device concepts the SiNWs should be isolated...
PublikationenAssessment of growth phases of the diatom Ditylum brightwellii by FT-IR and Raman spectroscopy
Most applications of monitoring microalgae necessitate fast deployable and sensitive methods to assess cellular physiology, preferably at the scale of single cells. Vibrational spectroscopies, namely Fourier...
PublikationenImproving the axial and lateral resolution of three-dimensional fluorescence microscopy using random speckle illuminations
We consider a fluorescence microscope in which several three-dimensional images of a sample are recorded for different speckle illuminations. We show, on synthetic data, that by summing the positive deconvolution...
PublikationenEstimation of spectra sample size for characterizing single cells using micro-Raman spectroscopy
Single-cell micro-Raman spectroscopy has the potential to become a powerful, new cytometric approach for discriminating between cell types and identifying subpopulations of cells based on differences in...
PublikationenHigh vacuum tip-enhanced Raman spectroscope based on a scanning tunneling microscope
In this paper, we present the construction of a high-vacuum tip-enhanced Raman spectroscopy (HV-TERS) system that allows in situ sample preparation and measurement. A detailed description of the prototype...
PublikationenRole of Ce in Yb/Al laser fibers: prevention of photodarkening and thermal effects
We report on detailed investigations of ytterbium (Yb) and aluminum (Al) doped silica fiber and preform samples co-doped with cerium (Ce). The prevention of pump-induced photodarkening (PD) by temporary...
PublikationenDual-telescope multi-channel thermal-infrared radiometer for outer planet fly-by missions
The design of a versatile dual-telescope thermal-infrared radiometer spanning the spectral wavelength range 8 to 200 µm, in five spectral pass bands, for outer planet fly-by missions is described. The...
PublikationenMolecular self-healing mechanisms between C60-fullerene and anthracene unveiled by Raman and two-dimensional correlation spectroscopy
The self-healing polymer P(LMA-co-MeAMMA) cross linked with C60-fullerene has been studied by FT-Raman spectroscopy in combination with two-dimensional (2D) correlation analysis and density functional...
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