Increasing biocompatibility of titanium bone implants

Bone implants are usually prepared from titanium which is biocompatible and highly resilient, but differs from bone tissue with respect to Young's modulus, resulting in possible scaffold loosening under stress. A porous geometry as well as the addition of growth factors can support adjusting the Young's modulus for an adapted scaffold-shaped geometry.

High symmetry gadolinium(III) polyhedra

In a recent article, creation of hollow nanospheres Gd20, Gd32, Gd50 and Gd60 is described using the approach to assemble fragments containing different polygons. While structural analysis revealed the symmetries of the respective nanospheres, magnetic studies show in theory and experiment that these polyhedra show antiferromagnetic interaction which can be attributed to classical spins at the Gd sites. Magnetic measurements can even be used as "fingerprints" to identify the polyhedra.

Magpar for beginners - a tutorial

Installation of parallel-computing Magpar micromagnetic simulator is a very challenging task for all interested physicists, and scientists in general, for whom computer science experience is from natural reasons very poor, especially within Unix-like systems. In the following report the reader can find step-by-step information how to install Magpar in Linux-based system. Since Magpar was issued in 2010, many details about location of files are not actual today.

New ideas for the New Year

The last months have been quite a busy time for the VIARAM team, with a lot of new publications in diverse areas of basic and applied research and some proposals for new projects.

In the new year, we will go on with micromagnetic simulations and experimental investigations of magnetic nano-structures, but also work on polymeric nanofiber mats with different physical and chemical properties, textile-based solar cells and batteries, and other interesting new materials and material combinations.

We wish you all the best for the New Year!

Natural computing with complex atomic switch networks

Self-organizing devices can be used to overcome known scaling limits in electronic computing, resulting in networks with unique operational characteristics which may help solving complex problems. The multi-electrode array developed here consists of a silicon substrate with platinum electrodes and an atomic switch network comprised of electro-deposited self-organized silver nanowires on a grid of copper posts, thus combining bottom-up and top-down approaches. Controlling the copper seed size enabled tailoring the forms and dimensions of the silver structures.

Natural superhydrophobicity

Superhydrophobic and superoleophobic surfaces are most often created using fluorinated compounds. Such compounds, however, cannot occur naturally. Thus studying natural surfaces of plants or animals with superhydrophobic or superoleophobic properties can show new ways to create such properties without fluorinated compounds.

Worth a visit

Berlin is always worth a visit – especially when the Annual Meeting of the DPG (German Physicists’ Society) and the DPG Spring Meeting take place there.

From March 15-20, 2015, several thousand researchers from all over the world joined the Spring Meeting of the DPG Condensed Matter Section. More than 300 plenary, prize and invited talks, more than 3,000 contributed talks and 1600 posters gave an overview of recent research topics, dealing with areas such as biological physics, thin films, semiconductors, magnetism, materials physics, vacuum science, crystallography etc.