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KOLÍBAL, M. VYSTAVĚL, T. VARGA, P. ŠIKOLA, T.
Original Title
Real-Time Observation of Collector Droplet Oscillations during Growth of Straight Nanowires
Type
journal article in Web of Science
Language
English
Original Abstract
A liquid droplet sitting on top of a pillar is crucially important for semiconductor nanowire growth via a vapor–liquid–solid (VLS) mechanism. For the growth of long and straight nanowires, it has been assumed so far that the droplet is pinned to the nanowire top and any instability in the droplet position leads to nanowire kinking.Here, using real-time in situ scanning electron microscopy during germanium nanowire growth, we show that the increase or decrease in the droplet wetting angle and subsequent droplet unpinning from the growth interface may also result in the growth of straight nanowires. Because our argumentation is based on terms and parameters common for VLS-grown nanowires, such as the geometry of the droplet and the growth interface, these conclusions are likely to be relevant to other nanowire systems.
Keywords
Germanium; nanowires; facet; contact angle; vapor-liquid-solid growth; in situ scanning electron microscopy
Authors
KOLÍBAL, M.; VYSTAVĚL, T.; VARGA, P.; ŠIKOLA, T.
RIV year
2014
Released
17. 4. 2014
ISBN
1530-6984
Periodical
NANO LETTERS
Year of study
14
Number
2
State
United States of America
Pages from
1756
Pages to
1761
Pages count
6
BibTex
@article{BUT107140, author="Miroslav {Kolíbal} and Tomáš {Vystavěl} and Peter {Varga} and Tomáš {Šikola}", title="Real-Time Observation of Collector Droplet Oscillations during Growth of Straight Nanowires", journal="NANO LETTERS", year="2014", volume="14", number="2", pages="1756--1761", doi="10.1021/nl404159x", issn="1530-6984" }