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Expositionsermittlung und -bewertung nanoskaliger Aerosole

Die chemische Industrie hat gemeinsam mit mehreren deutschen Institutionen zum Arbeitsschutz ein Strategiepapier erarbeitet, um Praktikern in Industrie und Behoerde bei der Anwendung von Nanomaterialien ein Werkzeug in die Hand zu geben, wie eine moegliche Exposition durch luftgetragene Nanopartikel am Arbeitsplatz gemessen und wie die Bewertung des Risikos fuer ein Hoechstmass an Sicherheit am Arbeitsplatz vorgenommen werden kann.

Posted: Apr 30th, 2012

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LEGO mit atomaren Magneten

Physiker der Uni Hamburg haben neuartige Magnete, die aus nur wenigen Atomen bestehen, aufgebaut und untersucht. Aehnlich wie bei einem LEGO-Bausatz, allerdings mit viel kleineren Bausteinen, koennen die Wissenschaftler einzelne Eisen-Atome zu unterschiedlichsten Strukturen zusammensetzen.

Posted: Apr 30th, 2012

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Single nanomaterial yields many laser colors

Engineers at Brown University and QD Vision Inc. have created nanoscale single crystals that can produce the red, green, or blue laser light needed in digital displays. The size determines color, but all the pyramid-shaped quantum dots are made the same way of the same elements.

Posted: Apr 29th, 2012

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Researchers direct the self-assembly of gold nanoparticles into device-ready thin films

Scientists with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley have directed the first self-assembly of nanoparticles into device-ready materials. Through a relatively easy and inexpensive technique based on blending nanoparticles with block co-polymer supramolecules, the researchers produced multiple-layers of thin films from highly ordered one-, two- and three-dimensional arrays of gold nanoparticles.

Posted: Apr 27th, 2012

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Bejeweled: Nanotechnology gets boost from nanowire decorations

Engineers at Stanford have found a novel method for "decorating" nanowires with chains of tiny particles to increase their electrical and catalytic performance. The new technique is simpler, faster and provides greater control than earlier methods and could lead to better batteries, solar cells and catalysts.

Posted: Apr 27th, 2012

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Doped diamond structures offer promise for biotech applications

In a collaboration with Waseda University in Tokyo, London Centre for Nanotechnology researchers have grown highly boron doped diamond layers only 1nm in thickness, a technique known as d-doping, for the realisation of high performance field effect transistors (FETs).

Posted: Apr 27th, 2012

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