In-situ mechanical characterization of wurtzite InAs nanowires

Erdélyi, R [Erdélyi, Róbert (Nanotechnológia), author] Institute of Technical Physics and Materials Sc... (MTA TTK); Madsen, H M; Sáfrán, Gy [Sáfrán, György (Vékonyrétegfizika), author] Institute of Technical Physics and Materials Sc... (MTA TTK); Hajnal, Z [Hajnal, Zoltán (Anyagtudományi mo...), author] Institute of Technical Physics and Materials Sc... (MTA TTK); Lukacs, I E [Lukács, István Endre (Optika, nanotechn...), author] Institute of Technical Physics and Materials Sc... (MTA TTK); Fülöp, G [Fülöp, Gergő (Fizikai), author] Department of Physics (BUTE / FNS / IP); Csonka, Sz [Csonka, Szabolcs (Kísérleti szilárd...), author] Department of Physics (BUTE / FNS / IP); Nygard, J; Volk, J [Volk, János (Nanotechnológia), author] Institute of Technical Physics and Materials Sc... (MTA TTK)

English Scientific Article (Journal Article)
Published: SOLID STATE COMMUNICATIONS 0038-1098 152 (19) pp. 1829-1833 2012
  • SJR Scopus - Chemistry (miscellaneous): Q1
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    High aspect ratio vertical InAs nanowires were mechanically characterized in a scanning electron microscope equipped with two micromanipulators. One, equipped with a calibrated atomic force microscope probe, was used for in-situ static bending of single nanowires along the /11–20S crystallographic direction. The other one was equipped with a tungsten tip for dynamic resonance excitation of the same nanowires. This setup enabled a direct comparison between the two techniques. The crystal structure was analyzed using transmission electron microscopy, and for InAs nanowires with a hexagonal wutzite crystal structure, the bending modulus value was found to BM¼43.5 GPa. This value is significantly lower than previously reported for both cubic zinc blende InAs bulk crystals and InAs nanowires. Besides, due to their high resonance quality factor (Q41200), the wurtzite InAs nanowires are shown to be a promising candidate for sub-femtogram mass detectors.
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    2021-04-20 06:40