Detail publikačního výsledku

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

KOLÍBAL, M.; VYSTAVĚL, T.; VARGA, P.; ŠIKOLA, T.

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

Germanium; nanowires; facet; contact angle; vapor-liquid-solid growth; in situ scanning electron microscopy

Klíčová slova v angličtině

Germanium; nanowires; facet; contact angle; vapor-liquid-solid growth; in situ scanning electron microscopy

Autoři

KOLÍBAL, M.; VYSTAVĚL, T.; VARGA, P.; ŠIKOLA, T.

Rok RIV

2015

Vydáno

17.04.2014

ISSN

1530-6984

Periodikum

NANO LETTERS

Svazek

14

Číslo

2

Stát

Spojené státy americké

Strany od

1756

Strany do

1761

Strany počet

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"
}