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Multi-core fiber with integrated fiber Bragg grating for background free Raman sensing

The combination of Raman spectroscopy with fiber optic probes enables analyzing the biochemical composition of tissues without markers in a non-destructive way. A small diameter (1 mm) fiber optic probe...

Flexible Dünnschicht-Solarzellen aus amorphem Silizium auf textilem Glasfasergewebe

Im Beitrag werden die aktuellen Ergebnisse des Projektes „TexSiSolar - Textile Silizium-Solarzellen auf Glasfaserverbundsystemen“ gefördert durch die Thüringer Aufbaubank vorgestellt. Flexible Dünnschicht-Solarzellen...

Distinguishing Chemical and Electromagnetic Enhancement in Surface-Enhanced Raman Spectra: The Case of para- Nitrothiophenol

Surface-enhanced Raman spectra are simulated using a combined classical electrodynamics / real-time time-dependent density functional theory approach and compared to experiments. Emphasis is put on discerning...

Whispering gallery mode microsphere resonator integrated inside a microstructured optical fiber

A compact, robust scheme for reliable in-fiber broadband excitation of whispering gallery mode (WGM) resonances into a microspherical resonator is demonstrated. A polymer microsphere (10 m) is encapsulated...

Redox State Sensitive Spectroscopy of the Model Compound [(H-dcbpy)2RuII(NCS)2]2− (dcbpy = 2,2′-Bipyridine-4,4′-dicarboxylato)

The charge transfer reaction mechanism in a ruthenium polypyridine model complex with isothiocyanato ligands, i.e., [(H-dcbpy)2Ru(NCS)2]2− 2Bu4N+ (Ru2H) (dcbpy = 2,2′-bipyridine-4,4′-dicarboxylato),...

Smart current collector—fibre optic hit detection system for improved security on railway tracks

In a deregulated EU railway market, monitoring the vehicle and infrastructure interfaces is mandatory for the enhanced availability of operation and for reducing costs. Therefore, infrastructure managers...

Competition in structural analysis-old wine in new skins

Applying contact to individual silicon nanowires using a dielectrophoresis (DEP)-based technique

One major challenge for the technological use of nanostructures is the control of their electrical and optoelectronic properties. For that purpose, extensive research into the electrical characterization...

Effect of methylation on wavenumber shift of ring breathing mode of pyrimidine in the solution of H2O and D2O by employing Raman difference spectroscopic technique and DFT approach

The relative structural and dynamic properties of hydrogen-bonding between Pyrimidine (Pmd) + H2O and Pmd + D2O, and 4-Methylpyrimidine (Mpmd) + H2O and Mpmd + D2O are investigated experimentally by linear...

High-Visibility Photonic Crystal Fiber Interferometer as Multifunctional Sensor

A photonic crystal fiber (PCF) interferometer that exhibits record fringe contrast (~40 dB) is demonstrated along with its sensing applications. The device operates in reflection mode and consists of a...