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QuAHMET: Quantum anomalous Hall effect materials and devices for metrology

QuAHMET --- Quantum anomalous Hall effect materials and devices for metrology is a Joint Research Project of the European Metrology Partnership research funding programme. The project focus is the traceable measurement and characterisation of quantum anomalous Hall effect (QAHE) materials as devices, enabling them as the foundation for the future generation of primary realisations of the resistance unit, the ohm (Ω).

Buffer gas cooling of a continuous CO molecular beam

We characterize a continuous buffer gas cooled source using CO molecules. We show results about the source performance considering different parameters, like gas flow rate, nozzle size, and internal cell volume. The beam contains 2.5 × 1014 molecules/(s sr) at about 160 m/s. Moreover, for two rotational states we observe an unexpected population distribution that we tentatively attribute to a lower temperature inside the cell. Considering the importance of buffer-gas cooling for experiments o...

Anisotropic light propagation in human brain white matter

Significance Accurate modeling of light diffusion in the human brain is crucial for applications in optogenetics and spectroscopic diagnostic techniques. White matter tissue is composed of myelinated axon bundles, suggesting the occurrence of enhanced light diffusion along their local orientation direction, which however has never been characterized experimentally. Existing diffuse optics models assume isotropic properties, limiting their accuracy. Aim We aim to characterize the anisotro...

Test di contatori di energia elettrica in condizioni di power quality registrate sul campo

Presso l'INRIM è operativo un sistema di taratura e verifica dei contatori di energia elettrica attiva. Il sistema consente di effettuare test anche in condizioni di bassa power quality. Sono stati implementati sia test con forme d'onda standard secondo normativa vigente, sia test in condizioni reali, campionate da impianti elettrici in condizioni operative. I risultati su contatori commerciali da impianto mostrano che la conformità a test effettuati con forme d'onda specificate in normativa ...

Analysis of the influence of velocity and time intervals for total force application in Rockwell hardness test cycles

The influence of key variables on hardness measurements, namely indenter velocity and geometry, dwell times, applied forces and temperature, has been thoroughly investigated in recent decades. The recent implementation of international definitions for the Rockwell hardness scale has heightened interest in understanding how these factors affect measurement outcomes. While these definitions and associated standards provide guidance on specific parameter ranges, the Rockwell hardness equation do...

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