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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 1.2017 - Scientific News

In order to become independent of the international prototype of the kilogram kept in Paris, the definition of the SI unit of mass, the kilogram, has to be revised. For this purpose, the number of silicon atoms in a monocrystalline silicon sphere has been determined at PTB within the scope of the Avogadro proj´ect. It is therefore necessary to measure the surface properties with the highest...

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In microsystems, metallic components are increasingly being replaced by those from low-cost polymers. For the thick-ness measurement of polymers, a DIN standard, DIN 32567, is now available which was developed, among others, by PTB experts. The standard describes both optical and tactile surface measuring methods for the precise measurement of the thickness of polymer layers. The tactile methods...

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Magnetic resonance spectroscopy (MRS) allows the non-invasive deter-mination of metabolites in the human brain in vivo. However, it is usually limited to rectangular volumes. This makes it difficult to quantify the metabolites selectively in a certain cerebral structure in order to establish a precise neurochemical profile of this structure. A new pulse sequence combined with a multichannel...

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Today, spectral color measurements are indispensable in numerous areas of science and industry. In the printing industry, for example, clear color definitions and exact color repetitions are necessary. The procedures used to date, however, only provide random and locally limited results – and some require a large amount of time and effort. Within the scope of a joint project with the Chromasens...

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At PTB, a novel calibration system for autocollimators has been set up, the Spatial Angle Autocollimator Calibrator. The calibration capabilities for optical angle measurements have thus been extended from plane to spatial angles for the first time. In addition, the system allows calibrations at distances from 250 mm to 1800 mm.

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The cooperation project with Carl Zeiss SMT GmbH in the field of radiometry, which started back in 1998, has been prolonged until the end of 2020. At PTB, this cooperation project represents the starting point and the basis of a field of work which provides extensive metrological support to the German and the European semiconductor industry for the development of EUV lithography. Besides EUV...

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PTB News 1.2017 - Technology transfer

At PTB, a novel manufacturing procedure based on (111)-silicon wafers al-lows areas with dimensions of up to 150  µm² to be generated which exhibit both atomically smooth surfaces and surfaces with monoatomic steps. In this procedure, a self-organizing process is triggered by using a targeted heating process under ultra-high vacuum within several lithographically structured patterns. The...

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Whether you are a high-end music connoisseur in your living room or a record-ing engineer in your recording studio, you both know them well – the location-dependent low-resonance frequencies which can be extremely unpleasant when listening to music. Low-frequency noise originating from machines can be similarly amplified in industrial locations due to room resonances. With PTB's invention – a...

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In conventional superconducting gravimeters, a test mass is levitated by the magnetic field of a superconducting coil. An elaborate adjustment allows the gravity of the earth to be measured at geographical locations by means of this measurement principle. PTB's new invention is based on an alternative geometry of the magnetic field and thus contains a new test mass in the form of a double cone. In...

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PTB News 1.2017 - Miscellaneous

Awards

Roman SchwartzRoman Schwartz,
Vice-President of PTB, was confirmed in his office as the “CIML First Vice-President” (CIML: International Committee of Legal Metrology) and reelected for another six years at the 51st CIML session in Strasbourg.

Raya Roshana GallasRaya Roshana Gallas
This staff member of Department 6.2, “Dosimetry for Radiation Therapy and X-ray Diagnostic Radiology”, was awarded the Otto Haxel Prize of Heidelberg...

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As part of the Federal Government's “Nanotechnologies Action Plan 2020”, the federal authorities responsible for human and environmental safety have extended their joint research strategy.

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The scientific exchange between PTB and its Argentinian partner institute, Instituto Nacional de Tecnologia Industriel (INTI), is growing closer.

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This year again, students are invited to take part in topical projects of PTB under the slogan “Dein genauester Sommer” (Your most accurate summer) from 1 August until 30 September 2017.

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Summer School

This year, PTB and Braunschweig Technical University will again offer an international summer school which will be funded by the Helmholtz Fund.

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EMRP/EMPIR

In 2017, there will be calls for papers on the following topics for new EMPIR projects: TP Industry, TP Fundamental, TP Normative, and TP Research Potential.

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