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nanotimes Content | Editor‘s Letter Content Dear Readers, Are Silver Nanoparticles Harmful?(62) Watchlist Drug Delivery Companies News in Brief

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It is not pure nanotech, but an amazing story Made in Germany, too. After over a year of work on the development of the Volocopter VC1, the German innovative company Syntern GmbH in Karlsruhe achieved the first manned flight world- wide with a purely electrically powered, vertical take-off and landing (VTOL) aircraft succeeded last year. The “proof of concept” VC1 will be shown at the AERO 2012 in Friedrichshafen in Germany this week.

silver nanoparticles cause more damage to testi- cular cells than titanium dioxide nanoparticles [ Page 62]. Their results suggest that silver nano- and submicron-particles (AgNPs) are more cytotoxic and cytostatic compared to TiO2

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nanoparticles, causing apoptosis, necrosis and decreased proliferation. That‘s an important and terrifying research result by researchers from Norway and Poland, published in Toxicology in January.

And there is a lot of other interesting research news, e.g. a low-cost alternatives to platinum for generating hydrogen gas from water [ page 63], and a novel type of solar cell called a “back- contact heterojunction solar cell”, developed by German researchers [ page 59].

12-03 :: March/April 2012

Editor‘s Letter