Dein Suchergebnis zum Thema: Tunnel

Multiferroischer Tunnelkontakt für hohe Speicherdichten und Spintronik

https://www.mpg.de/5047313/multiferroischer_tunnelkontakt_datenspeicher_spintronik

In einem multiferroischen Tunnelkontakt, die M. Alexe und D. Hesse am Max-Planck-Institut für Mikrostrukturphysik hergestellt haben, hat eine Änderung der Polarisation in der ferroelektrischen Bleizirkonattitanat-Schicht eine Änderung sowohl des elektrischen Tunnelwiderstand als auch des Tunnelmagnetowiderstands zwischen einer ferromagnetischen Cobalt- und einer ferromagnetischen Lanthanstrontiummanganatschicht zur Folge. Nanokondensatoren, in denen sich auf diese Weise, die elektrische und magnetische Komponente des Tunnelstroms ändern lässt, ermöglichen Datenspeicher mit hoher Datendichte und könnten als spin-selektive Schalter in der Spintronik dienen.
Marin Alexe Reversible electrical switching of spin polarization in multiferroic tunnel

‘Light shining through a wall’ experiment ALPS starts searching for dark matter

https://www.mpg.de/20351412/light-shining-through-a-wall-experiment-alps-starts-searching-for-dark-matter

The world’s most sensitive model-independent experiment to search for particularly light particles, of which dark matter might be composed, starts today at DESY in the form of the ‘light shining through a wall’ experiment ALPS II. Key contributions to the novel experiment come from researchers at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute, AEI) and the Institute for Gravitational Physics at Leibniz Universität Hannover.
This video sneaks into the tunnel of the HERA accelerator where the 250-metres long

Air pollution renders flower odors unattractive to moths

https://www.mpg.de/15329498/0904-choe-025591-air-pollution-renders-flower-odors-unattractive-to-moths?c=2249

Researchers showed that tobacco hawkmoths lost attraction to the scent of their preferred flowers when that scent had been altered by ozone. This oxidizing pollutant thus disturbs the interaction between a plant and its pollinator, a relationship that has evolved over millions of years.
They tested the responses of the moths in behavioral assays in a wind tunnel, allowing

Peter Gruss

https://www.mpg.de/8241829/peter-gruss

In discharging their office, all Presidents are guided by their field of expertise and the methods they employed as scientists. A defining characteristic of the microbiologist Peter Gruss is that he constantly seeks out new territory, often blazing unexplored trails but always prepared to retrace his steps or change direction if a path proves unfruitful. This is the hallmark of an experimenter for whom every experiment is an enriching experience – irrespective of the effort put into it and the outcome. Thus, as President of the Max Planck Society, Peter Gruss ventured forth in many directions.
He achieved this through exhibitions such as the Science Tunnel and the Science Express