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Enabling data-driven design of block copolymer self-assembly

: Here we present a database composed of scanning electron microscope images of self-assembled block copolymers. The fabrication process parameters, structural properties and microscope information are all contained in the image metadata, making a group of images a database on its own. This approach has numerous advantages including ease of sharing, reusability of information and resilience against user errors. This database follows the digital International System of Units principles and is ...

Nanoporous Copper Films via Dynamic Hydrogen Bubbling: A Promising SERS Substrate for Sensitive Detection of Methylene Blue

Cu-based nanomaterials have received considerable attention as promising and cost-effective substrates for surface-enhanced Raman spectroscopy (SERS) applications despite their relatively low enhancement factor (EF) compared to noble metals like gold and silver. In this study, a fast and affordable synthesis route is proposed to obtain a three-dimensional porous copper film (NPC) via an electrodeposition technique based on the dynamic hydrogen bubbling template (DHBT). Two sets of NPC film we...

Light-shift mitigation in a microcell-based atomic clock with symmetric auto-balanced Ramsey spectroscopy

The mid-term fractional frequency stability of miniaturized atomic clocks can be limited by light-shift effects. In this Letter, we demonstrate the implementation of a symmetric auto-balanced Ramsey (SABR) interrogation sequence in a microcell-based atomic clock based on coherent population trapping. Using this advanced protocol, the sensitivity of the clock frequency to laser power, microwave power, and laser frequency variations is reduced, at least by one order of magnitude, in comparison ...

Project on a fully automated evaluation of a virtual comparison of mass using the Digital Calibration Certificate (DCC) schema

of this comparison is to demonstrate a possibility of digital transformation in metrology using an automated evaluation chain of different tools as well as machine-interpretable files for data transfer and reporting. We discuss the different tools and exchange formats as well as the performance of the virtual mass comparison in detail.

Analysis of ageing effects on static gas meters

Static gas meters are currently being installed in increasing quantities within gas distribution networks across Europe due to their up-to-date technology which intrinsically allows to comply with current requests from Normation and fiscal bodies; on the other hand, the technology on which such meters are based is still relatively new, therefore confidence in it must be built. In particular, for instance in Italy, regulation agencies require more frequent verification of static meters with r...

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