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PTB News

Three times a year, PTB News provides topical information from the varied spectrum of activities of the Physikalisch-Technische Bundesanstalt (PTB) consisting of fundamental research, legal metrology and PTB's various activities in the service of the economy.

PTB News 3.2017 - Scientific News

Tumor irradiation by carbon ions is clearly becoming more precise. With the help of investigations carried out by the Physikalisch-Technische Bundesanstalt (PTB), the accuracy of the absorbed dose measurement could be improved by a factor of three. The German Cancer Research Center (DKFZ) and the Heidelberg Ion Beam Therapy Center (HIT) were also involved in this research collaboration.

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In order to develop the highly sensitive magnetic measurement technology for biomedical research further and to deal with fundamental questions of physics, a new multichannel vector magnetometer module has been developed at PTB. This 18-channel device forms the basis of a measuring system using a modular design.

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Within the scope of an international project, PTB has developed the prototype of a 3D-capable interferometer that compensates for the optical refractive index of air intrinsically. This so-called 3D-Lasermeter has been successfully tested in two series of tests under difficult industrial ambient conditions.

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Quantum information technology requires low-noise and extreme broadband amplifiers for weak microwave signals. A novel parametric amplifier with Josephson junctions that was developed at PTB distinguishes itself through high gain, broad bandwidth and low noise.

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A procedure further developed by PTB allows plastic test pieces (phantoms) containing well-defined additions of magnetic nanoparticles to be manufactured for the first time. This procedure opens up the possibility of making nanoparticle distributions that are precise and have long-term stability available to biomedicine in any arbitrary geometries for the testing of magnetic imaging modalities.

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For the practical use of battery-operated electric vehicles, measurement methods are required which provide fast and reliable information as to whether and to what extent the maximum charging capacity of a Li ion battery has already decreased. This is referred to as the “state of health”. To measure a battery's state of health, PTB has installed a reference measuring set-up that uses...

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Solar Orbiter is a spacecraft of the European Space Agency (ESA) which is intended to orbit and investigate the Sun scientifically for seven years. This mission is currently scheduled to start in October 2018. Three of the Solar Orbiter’s instruments will measure the Sun in the vacuum UV or extreme ultraviolet radiation spectral range with radiation at wavelengths shorter than 130 nm. The...

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PTB News 3.2017 - Technology transfer

A new miniature gas sensor developed by PTB not only precisely determines the volumetric flow of a gas but also identifies the composition, for example, of several energy gases.

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Surface resistance is considered an important parameter in explosion protection to assess the electrostatic charge of building elements which might lead to electrostatic discharge and, in the worst case, to an ignition of an explosive atmosphere.

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The quantitative investigation of cells in blood by means of flow cytometry is a routine procedure in medical diagnostics. Thanks to the development of this novel procedure by PTB, it has become possible to determine the concentrations of erythrocytes, thrombocytes and leukocytes in blood samples simultaneously and reliably by means of AC impedance.

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PTB News 3.2017 - Miscellaneous

Awards

PTB
The German Council of Science and Humanities has evaluated PTB and awarded it an excellent rating. The results go above and beyond the previous outstanding rating from the first evaluation in 2008. In the report which was published on 2 May, the Council praised PTB's performance of legal core tasks, research activities and services as well as strategy and planning processes that are necessary...

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As the first of three pilot projects within the national initiative “Quantum technology – basics and applications” (QUTEGA), which was created by the Federal Ministry of Education and Research, the joint project “Optical single ion clocks for users” (optIclock) was started on 1 May. Under the special guidance of TOPTICA Photonics AG and PTB, it is intended to realize a demonstrator for optical...

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Mit dem Helmholtz- Preis ehren der Helmholtz- Fonds e. V. und der Stifterverband für die Deutsche Wissenschaft alle zwei bis drei Jahre Wissenschaftler für Präzisionsmessungen in Physik, Chemie und Medizin.

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