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In-situ observation of 〈110〉 oriented Ge nanowire growth and associated collector droplet behavior

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5 Author(s)
Kolibal, Miroslav ; Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic ; Vystavel, Tomas ; Novak, Libor ; Mach, Jindrich
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Using in-situ microscopy, we show that germanium nanowires can be grown by a vapor-liquid-solid process in 〈110〉 directions both on Ge(100) and Ge(111) substrates if very low supersaturation in the collector droplet is ensured. This can be provided if thermal evaporation is utilized. Such a behavior is also in agreement with earlier chemical vapor deposition experiments, where 〈110〉 oriented wires were obtained for very small wire diameters only. Our conclusions are supported by in-situ observations of nanowire kinking towards 〈111〉 direction occurring more frequently at higher evaporation rates.

Published in:

Applied Physics Letters  (Volume:99 ,  Issue: 14 )

Date of Publication:

Oct 2011

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