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Laser-induced spatially-selective tailoring of high-index dielectric metasurfaces

Optically resonant high-index dielectric metasurfaces featuring Mie-type electric and magnetic resonances are usually fabricated by means of planar technologies, which limit the degrees of freedom in tunability...

Tracking and analysing the Brownian motion of nano-objects inside hollow core fibers

Tracking and analysing the individual diffusion of nanoscale objects such as proteins and viruses is an important methodology in life science. Here, we show a sensor that combines the efficiency of light...

Chemical Treatment of Graphene Films to Improve Electrical Conductivity

Improved retention of nonvolatile bipolar BiFeO3 resistive memories validated by memristance measurements

The transport properties of metal-insulator-metal (MIM) capacitor-like structures have been demonstrated to be sensitive to the metal-insulator interface. BiFeO3 thin films have been grown on Pt/Ti/SiO2/Si...

The chemical effect goes resonant – a full quantum mechanical approach on TERS

Lately, experimental evidence of unexpectedly extremely high spatial resolution of tip-enhanced Raman scattering (TERS) has been demonstrated. Theoretically, two different contributions are discussed:...

Homoepitaxy of ZnO by pulsed-laser deposition

ZnO thin films were grown homoepitaxially on O-face ZnO single crystals by pulsed-laser deposition. The ZnO substrates grown by the hydrothermal method were heat-treated in oxygen ambient at 1000 °C for...

Quantum Confined Stark Effect of excitons localized at very thin InAs layers embedded in GaAs

InAs monolayers (1.0–1.7 ML) embedded in GaAs can effectively bind Frenkel-like excitons in the perpendicular direction and have efficient optical heavy hole hh–e and light hole lh–e transitions...

Dielectric function effects due to isovalent monolayers of III-elements buried in GaAs, GaP, and AlGaAs

Ellipsometric measurements have been made at room temperature on MOVPE-grown InAs monolayers (ML) (0.5 to 1 ML) in GaAs around the fundamental gap E0 and the critical point (CP) E1 of the material GaAs...

Differential response of liver sinusoidal endothelial cells and hepatocytes to oleic and palmitic acid revealed by Raman and CARS imaging

Excess circulating fatty acids contribute to endothelial dysfunction that subsequently aggravates the metabolic conditions such as fatty liver diseases. However, the exact mechanism of this event is not...

Deep learning a boon for Biophotonics?

This review covers original articles using deep learning in the biophotonic field published in the last years. In these years deep learning, which is a subset of machine learning mostly based on artificial...