Jessica D. Torrey, Stephanie E. Vasko, Adnan Kapetanovic, Zihua Zhu, Andreas Scholl and Marco Rolandi Writing Nanostructures: Scanning Probe Direct-Write of Germanium Nanostructures (Adv. Mater. 41/2010) Advanced Materials 22
The cover image depicts the direct writing of a germanium nanostructure with the tip of an atomic force microscope (AFM). Germanium writing occurs when the AFM tip traces the desired shape along a biased silicon sample while immersed in an organometallic precursor (diphenylgermane). The high-electric field and the electrons emitted from the tip cause the precursor to locally react and yield germanium nanostructures. This innovative AFM strategy creates sub-30 nm carbon-free germanium nanostructures with desired geometries and placement, as reported on p. 4639 by Marco Rolandi and co-workers.
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