A versatile microfluidic platform to synthesize NPs by nanoprecipitation using 3D hydrodynamic flow focusing isolates the precipitating precursors from channel walls, eliminating fouling of the channels. It is shown that this new method enables robust nanoprecipitation without polymer aggregation, regardless of the polymer molecular weight or precursor concentration implemented, where the size of the resulting polymeric NPs is tunable.

Robust microfluidic synthesis of polymer nanoparticles based on nanoprecipitation is reported by Omid C. Farokhzad, Rohit Karnik, and co‐workers . 3D hydrodynamic flow focusing, realized by constructing three sequential inlets for vertical focusing followed by a conventional cross junction for horizontal focusing, isolates the polymer precursors from the channelwalls, both vertically and horizontally.

Many studies have researched students’ ideas about air pollution, basically focusing on nature and impact of gaseous pollutants on human health. However, recent research has highlighted the importance of the...

En aquest article presentem una activitat realitzada durant els anys 2013 i 2014, en el marc del projecte CROMA amb estudiants de cicle mitjà i superior d'educació primària. En aquesta activitat s'ha utilitzat una llançadora d'aire comprimit per propulsar coets de paper fets per nens i nenes de 9 a 11 anys, la qual cosa els ha permès realitzar un estudi dels factors que intervenen en que l'abast del coet sigui major o menor. L'article descriu el material utilitzat, l'estructura de l'activitat i les valoracions documentades a partir de les intervencions realitzades.