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View article: 3D camera based on laser light absorption by atmospheric oxygen at 761 nm
3D camera based on laser light absorption by atmospheric oxygen at 761 nm Open
A 3D camera based on laser light absorption of atmospheric oxygen at 761 nm is presented. The camera uses a current-tunable single frequency distributed feedback laser for active illumination and a silicon-based image sensor as a receiver.…
View article: The CCL-K11 ongoing key comparison. Final report for 2023
The CCL-K11 ongoing key comparison. Final report for 2023 Open
Main text Six lasers from six national metrological institutes (NMIs) were compared in the year 2023 as part of the CCL-K11 ongoing key comparison, initiated by the 13th meeting of the Comité Consultative des Longueurs (CCL) in 2007. The a…
View article: The European GeoMetre project: developing enhanced large-scale dimensional metrology for geodesy
The European GeoMetre project: developing enhanced large-scale dimensional metrology for geodesy Open
View article: Large-Scale Dimensional Metrology for Geodesy—First Results from the European GeoMetre Project
Large-Scale Dimensional Metrology for Geodesy—First Results from the European GeoMetre Project Open
In a joint effort, experts from measurement science and space-geodesy develop instrumentation and methods to further strengthen traceability to the SI definition of the metre for geodetic reference frames (GRF). GRFs are based on space-geo…
View article: Metrological characterization methods for confocal chromatic line sensors and optical topography sensors
Metrological characterization methods for confocal chromatic line sensors and optical topography sensors Open
The increasing use of chromatic confocal technology for, e.g. fast, in-line optical topography, and measuring thickness, roughness and profiles implies a need for the characterization of various aspects of the sensors. Single-point, line a…
View article: Atomic force microscope adhesion measurements and atomistic molecular dynamics simulations at different humidities
Atomic force microscope adhesion measurements and atomistic molecular dynamics simulations at different humidities Open
Due to their operation principle atomic force microscopes (AFMs) are sensitive to all factors affecting the detected force between the probe and the sample. Relative humidity is an important and often neglected-both in experiments and simu…
View article: DNA origami structures as calibration standards for nanometrology
DNA origami structures as calibration standards for nanometrology Open
In this work we have studied the feasibility of DNA origami nanostructures as dimensional calibration standards for atomic force microscopes (AFMs) at the nanometre scale. The stability of the structures and repeatability of the measuremen…