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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...
Atomic force direct‐write of carbon‐free germanium nanostructures is easily accomplished via high‐field reaction of liquid diphenylgermane precursor. Sub‐30 nm features are written in arbitrary patterns at velocities as high as 100 μm s−1.
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