Tag Archives: fossiles exemplar

Rätselraten um mysteriöses Fossil vorerst beendet

Palaeospondylus ist doch kein Schleimaal

Aktuelle Forschungsergebnisse der Paläontologin Cathrin Pfaff von der Universität Wien rücken das Verwandtschaftsverhältnis von Palaeospondylus gunni in ein neues Licht. Intensive Forschungsarbeiten an dem nur wenige Millimeter großen Fossil haben gezeigt, dass es sich um ein kiefertragendes Wirbeltier handelt, und nicht, wie zuletzt angenommen, um die Larve eines kieferlosen Fisches. Die Studie wird aktuell im Fachjournal “Royal Society of Open Science” veröffentlicht.


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Berkeley Lab Researchers Create Nanoparticle Thin Films That Self-Assemble in One Minute

The days of self-assembling nanoparticles taking hours to form a film over a microscopic-sized wafer are over. Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have devised a technique whereby self-assembling nanoparticle arrays can form a highly ordered thin film over macroscopic distances in one minute.

Ting Xu, a polymer scientist with Berkeley Lab’s Materials Sciences Division, led a study in which supramolecules based on block copolymers were combined with gold nanoparticles to create nanocomposites that under solvent annealing quickly self-assembled into hierarchically-structured thin films spanning an area of several square centimeters. The technique is compatible with current nanomanufacturing processes and has the potential to generate new families of optical coatings for applications in a wide number of areas including solar energy, nanoelectronics and computer memory storage. This technique could even open new avenues to the fabrication of metamaterials, artificial nanoconstructs that possess remarkable optical properties. (more…)

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