Publication detail

Real-Time Observation of Collector Droplet Oscillations during Growth of Straight Nanowires

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"
}