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21.02.2012
A grid of magnetic vortex structures - Image: TUM
Saving data in vortex structures
Faster, smaller and more energy-efficient – that is what computers of the future should be like. A new phenomenon stands to make a major contribution in this direction: It needs 100,000 times less current than existing technologies, and the number of atoms needed for a data bit could diminish significantly. A team of physicists from the Technische Universitaet Muenchen (TUM) and the University of Cologne are driving this technology forward. They have now developed a simple electronic method for moving and reading data bits. The journal Nature Physics reports on their results.
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Kontakt: presse@tum.de
16.02.2012
Immunoproteasome
Determination of the immunoproteasome crystal structure
Like a shredder, the immunoproteasome cuts down proteins into peptides that are subsequently presented on the cellular surface. The immune system can distinguish between self and nonself peptides and selectively kills cells that due to a viral infection present non-self peptides at their surface. In autoimmune diseases this mechanism is deregulated and the immune system also eliminates uninfected cells by mistake. However, inhibition of the immunoproteasome may alleviate disease symptoms and progression. Biochemists at the Technische Universitaet Muenchen (TUM) now succeeded in determining the first crystal structure of an immunoproteasome. The results are reported in the renowned journal “Cell” and will enable the development of new drugs that selectively target the immunoproteasome.
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Kontakt: presse@tum.de
14.02.2012
TUM-Vizepräsidentin Hannemor Keidel und Außenminister Guido Westerwelle (Bild: TUM)
Außenminister Westerwelle eröffnet TUM-Büro in São Paulo
Bundesaußenminister Guido Westerwelle hat heute in São Paulo das Deutsche Wissenschafts- und Innovationshaus eröffnet. Die Technische Universität München (TUM) ist dort mit einem eigenen Büro vertreten.
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Kontakt: presse@tum.de
14.02.2012
Wichtig für Wald-Ökosysteme: die Große Wegschnecke (Bild: M. Türke / TUM)
Ökosystemforschung: Wie Schnecken die Ausbreitung von Pflanzen sichern
Buschwindröschen, Veilchen oder Schneeglöckchen – viele Frühblüher sind für ihre Ausbreitung auf Ameisen angewiesen. Die Insekten ernähren sich von fett- und eiweißreichen Bestandteilen der Pflanzensamen und transportieren sie „nebenbei“ über den Waldboden. Die sogenannten Myrmekochoren sind aber auch dort heimisch, wo Ameisen (griech. myrmex) selten sind, beispielsweise in feuchten und dunklen Buchenwäldern. Biologen der Technischen Universität München haben nun herausgefunden, dass Schnecken dort den Transport der Pflanzensamen übernehmen. Die Studie ist im Fachjournal "The American Naturalist" erschienen.
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Kontakt: presse@tum.de
13.02.2012
Insert of a sample for activation at the PGAA - Photo: A. Heddergott/TUM
The world’s strongest and purest neutron beam
The world’s strongest neutron beam is produced by a scientific instrument at the research neutron source FRM II (Forschungs-Neutronenquelle Heinz Maier-Leibnitz) at the Technischen Universitaet Muenchen (TUM). But that is not all: During the long maintenance break in 2011, the instrument PGAA (Prompt Gamma Activation Analysis) was improved to give it the best ratio between usable neutrons and noisy background radiation worldwide. It is now possible to determine the elementary composition of even smallest samples in the milligram range. The instrument is operated by the Universities of Cologne (Germany) and Bern (Switzerland).
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Kontakt: presse@tum.de
07.02.2012
Metal cluster built up like a Russian matryoshka
Bronze-Matryoshka: The metal in the metal in the metal
A doll in a doll, and then one more, enveloping them from the outside – this is how Thomas Faessler explains his molecule. He packs one atom in a cage within an atom framework. With their large surfaces these structures can serve as highly efficient catalysts. Just like in the Russian wooden toy, a hull of twelve copper atoms encases a single tin atom. This hull is, in turn, enveloped by 20 further tin atoms. Professor Faessler’s work group at the Institute of Inorganic Chemistry at the Technische Universitaet Muenchen (TUM) was the first to generate these spatial structures built up in three layers as isolated metal clusters in bronze alloys.
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Kontakt: presse@tum.de
03.02.2012
Landschaften neu entdecken - im Deutschen Museum
Sonderausstellung „LandschafftRessourcen“ im Deutschen Museum
Wie wirken sich Landschaftseingriffe aus und wo stecken Konfliktpotenziale? Welche Ressourcen sind knapp und wie kann Landnutzung dazu beitragen, Ressourcen nachhaltig zu bewirtschaften? Die Wanderausstellung „LandschafftRessourcen“ geht diesen Fragen auf den Grund und zeigt aktuelle Erkenntnisse und Lösungsansätze aus der Forschung. Bis zum 1. April 2012 ist die Ausstellung im Deutschen Museum in München zu Gast. Die Technische Universität München ist Kooperationspartnerin der Ausstellung.
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Kontakt: presse@tum.de
31.01.2012
A graphene sheet overstretches the small gap between two metalic contacts
Ultra-fast photodetector and terahertz generator
Extremely thin, more stable than steel and widely applicable: the material graphene is full of interesting properties. As such, it is currently the shining star among the electric conductors. Photodetectors made with graphene can process and conduct both light signals and electric signals extremely fast. Upon optical stimulation, graphene generates a photocurrent within picoseconds (0,000 000 000 001 second). Until now, none of the available methods were fast enough to measure these processes in graphene. Professor Alexander Holleitner and Dr. Leonhard Prechtel, scientists at the Technische Universitaet Muenchen (TUM), have now developed a method to measure the temporal dynamics of this photo current.
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Kontakt: presse@tum.de
26.01.2012
High performance computer at LRZ - Picture: LRZ
Software Development in High Performance Computing
The German Research Foundation (DFG) regards the redesign of software development in high performance computing as one of the main future challenges. Thus the DFG is first starting the priority program “Software for Exascale Computing (SPPEXA)” from the strategy fund. TUM informatics professor Hans-Joachim Bungartz from the Chair of Scientific Computing promoted the project and is presently one of the coordinators. SPPEXA is based on a 6 year time frame with a budget amount of 24 million euros.
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Kontakt: presse@tum.de
23.01.2012
Helmut Karl, Altbürgermeister von Garching (Bild: Stadt Garching)
TU München trauert um Ehrensenator Helmut Karl
Die Technische Universität München (TUM) betrauert den Tod ihres Ehrensenators und Garchinger Altbürgermeisters Helmut Karl, der am 19. Januar 2012 im Alter von 74 Jahren verstorben ist. Helmut Karl hat sich in besonderem Maß um den Garchinger Forschungsstandort der TUM verdient gemacht.
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Kontakt: presse@tum.de
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