Latest Physikalisch-Technische Bundesanstalt Stories

New Insight Into Matter Provided By Photon Recoil
2014-01-30 10:15:01

Physikalisch-Technische Bundesanstalt (PTB) This news release is available in German. Quantum logic spectroscopy – which is closely linked with the name of the 2012 Nobel prize laureate, David J. Wineland – has been significantly extended: this new method is called "photon-recoil spectroscopy" (PRS). The potential of this method has been demonstrated by the research group led by Piet Schmidt from the QUEST Institute, which is based at the Physikalisch-Technische Bundesanstalt,...

2013-10-30 16:05:47

PTB software for industry and research can be downloaded free of charge. Whether you want to investigate objects in space, characterize the quality of light sources, optimize photovoltaics modules or analyze chemical compounds, measuring the spectrum of light- or heat sources is often the method of choice. Conventional procedures thereby generate radiation distribution curves which are distorted and have to be subsequently corrected. The Physikalisch-Technische Bundesanstalt (PTB) has now...

Connecting Clocks To Measure Height
2013-10-02 11:10:16

Physikalisch-Technische Bundesanstalt (PTB) Researchers from Garching and Braunschweig transport frequencies with high precision over almost 2000 km - important, among other things, for geodesy How far above sea level is a place located? And where exactly is "sea level"? It is one objective of the geodesists to answer these questions with 1 cm accuracy. Conventional measurement procedures or GPS technologies via satellites, however, reach their limits here. Now optical atomic clocks...

Development Of Alternative Manufacturing Procedures For Graphene
2013-10-02 10:30:18

Physikalisch-Technische Bundesanstalt (PTB) New production method broadens the perspectives for an improved use of the "magic material" - many different forms are possible Graphene, a crystal composed of only one layer of carbon atoms arranged in a regular hexagon, is regarded as a material which is believed to be capable of performing miracles, in particular in the fields of electronics, sensor technology and display technology, but also in metrology. Only four years after the first...

Weather And Climate Models Improved Using SEALDH
2013-03-04 12:15:33

Physikalisch-Technische Bundesanstalt A humidity sensor developed by the Physikalisch-Technische Bundesanstalt (PTB), the SEALDH laser hygrometer, has proven its worth when used aboard an aircraft; it fulfills all pre-conditions to be used as a transfer standard for conventional humidity-measuring instruments. This would allow the quality of air humidity measurements in the Earth's atmosphere - and, thus, also climate model computations - to be improved. Humidity measurements in the...

Smallest Biomarkers Tracked Down
2012-11-27 14:44:47

Physikalisch-Technische Bundesanstalt (PTB) PTB and Dectris have developed a vacuum-compatible X-ray detector that allows the size of low-contrast nano-objects to be determined. Microvesicles are smallest cell elements which are present in all body fluids and are different, depending on whether a person is healthy or sick. This could contribute to detecting numerous diseases, such as, e.g., carcinomas, at an early stage, and to treating them more efficiently. The problem is that the...

2011-03-08 15:52:48

Patented PTB invention solves the problem of 'magnetic ringing' Magnetic Random Access Memories (MRAM) are the most important new modules on the market of computer storage devices. Like the well known USB-sticks, they store information into static memory, but MRAM offer short access times and unlimited writing properties. Commercial MRAMs have been on the market since 2005. They are, however, still slower than the competitors they have among the volatile storage media. An invention made by...

2011-03-07 15:20:18

PTB develops first primary standard worldwide for calibration of thoron measuring instruments "Many people are now saying: 'Is it really that easy? Then why didn't anyone think of it a long time ago?' But you have to have the right idea at the right time," says Annette Röttger, physicist at the Physikalisch-Technische Bundesanstalt (PTB), in a pleased way. Annette Röttger and her scientific team managed to do something that was previously thought to be impossible: they developed a...

2011-02-10 07:49:08

Avogadro constant determined with enriched silicon-28 A milestone in the international Avogadro project coordinated by the Physikalisch-Technische Bundesanstalt (PTB) has been reached: With the aid of a single crystal of highly enriched 28Si, the Avogadro constant has now been measured as exactly as never before with a relative overall uncertainty of 3 "¢ 10-8. Within the scope of the redefinition of the kilogram, the value NA = 6.02214078(18) "¢ 1023 mol-1 permits the currently...

2010-09-27 12:14:38

New PTB instrument measures the quality of the mirrors for the X-ray telescope IXO  It is to become the largest X-ray telescope ever: The International X-Ray Observatory (IXO), which has been planned in a cooperation between NASA, ESA and Japan's Aerospace Exploration Agency JAXA, will be launched into space in 2021 and provide the world with brand new information about black holes and, thus, about the origin of the universe. Its dimensions are gigantic: The surface of the mirror alone,...

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