The authors demonstrate a nanofabrication method utilizing nanoporous alumina templates which involves directed three dimensional assembly of nanoparticles inside the pores by means of an electrophoretic technique. In their demonstration, they have assembled polystyrene nanobeads with diameter of 50nm inside nanopore arrays of height of 250nm and diameter of 80nm. Such a technique is particularly useful for large-scale, rapid assembly of nanoelements for potential device applications.

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