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Into the Future with Metrology - The Challenges of Our Environment and Climate

News on Environment and Climate

Dosimeter

Morre than 23 million people in the world are exposed to ionizing radiation sometime during the course of their work. Natural radiation is everywhere and affects everyone. The topic of radiation protection is also becoming ever more varied. Due to the latest developments, such as pulsed radiation in medical, industrial or technical applications, we are now increasingly dealing with radiation...

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Aus einem Autoauspuff kommt Abgas.

Improved air quality in city centers and climate protection – counting soot particles is to become an integral part of the exhaust examination of diesel cars within the scope of mandatory vehicle inspections in Germany (HU/AU). This novel task requires an entirely new type of measuring instruments that must first be developed and type-approved in order to be installed in vehicle workshops. To...

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Untertagelaboratorium UDO II der PTB

Nach Tschernobyl wurden weltweit Netzwerke von Messstationen eingerichtet, um die Radioaktivität und Ortsdosisleistung in der Umwelt flächendeckend zu überwachen. Heute sind allein in Europa mehr als 5500 solcher Messstationen nationaler Frühwarnsysteme im Einsatz, die mit hochempfindlichen Dosimetern die Ortsdosisleistung überwachen und ihre Messdaten rund um die Uhr, im Stundentakt, an das Joint...

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In a new cross-institutional working group called “Advanced Materials” under the leadership of the Bundesanstalt für Risikobewertung (Federal Institute for Risk Assessment, BfR), an expert committee which includes experts from PTB will assess the potential health and environmental risks of advanced materials. The committee is intended to shed light on the future handling of advanced materials, new...

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Electron microscope image of the columnar nanostructures on the silicon surface of the photodiode
(Source: T. Pasanen/Aalto Univ.)

Photodiodes for the ultraviolet (UV) spectral range are used in a large number of applications such as spectroscopy, imaging, flame detection, water treatment and biotechnologies. So far, loss processes have considerably limited their responsivity. A novel photodiode allowed the quantum efficiency to increase from roughly 80 % to more than 130 %.

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The infrasound playback system consists of two sound generators (earphone transducers in an air-tight metallic housing). Sound is guided to a joint insert earphone via a flexible tube.

The growing number of infrasound sources in our environment is increasingly attracting society’s attention. Together with the Otto von Guericke University Magdeburg, PTB has investigated how humans perceive infrasound with their ears and whether the detection threshold of an infrasonic signal depends on whether it is composed of one or of several tones. This allows conclusions to be drawn as to...

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Wasserdampf in der Atmosphäre hat sehr großen Einfluss auf das Klima. Seine räumliche Verteilung lässt sich am besten mit flugfähigen Plattformen wie Flugzeugen messen. Aus diesem Grund arbeitet die Physikalisch-Technische Bundesanstalt (PTB) mit dem Institut für Flugführung (IFF) der Technischen Universität Braunschweig eng zusammen, um neue metrologische Konzepte für die Feuchtemessung zu...

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Ein Kran lässt Teile einer technischen Anlage zu Boden.

Wasserstoff gewinnt nicht nur als klimaneutraler Energieträger zunehmend an Bedeutung, sondern auch als erneuerbares Prozessgas in der Stahlherstellung. Wird der Wasserstoff mithilfe regenerativ erzeugten Stroms hergestellt, lassen sich bei der Stahlproduktion erhebliche Mengen an CO2-Emissonen vermeiden. Das Wissen um eine geeignete Wasserstoff-Mengenmesstechnik, mit der sich industrielle...

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The OBCA mounted next to the transfer standard on the translation system at PTB's Reduced Background Calibration Facility 2. (Photo credit: Fraunhofer IOF, CYMER)

At PTB, the reference radiation source of the EnMAP satellite for the remote sensing of the Earth has been calibrated with high resolution. This ensures the long-term comparability and traceability of its global measurement data from the fields of geobiology, geochemistry and geophysics.

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The new building accommodates, among other things, testing laboratories for exhaust meters that are state of the art and a calibration laboratory for particle counters.

The regular inspection of motor vehicle emissions became more stringent in several ways at the end of 2017. This required exhaustive research activities, and numerous type examination certificates for exhaust meters had to be issued or renewed promptly. For this purpose, a new building was planned, erected and commissioned within just one year in order to accommodate a new certification...

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