Publication detail

Real-Time Study of Surface-Guided Nanowire Growth by In Situ Scanning Electron Microscopy

ROTHMAN, A. BUKVIŠOVÁ, K. ITZHAK, N. R. KAPLAN-ASHIRI, I. KOSSOY, A. E. SUI, X. NOVÁK, L. ŠIKOLA, T. KOLÍBAL, M. JOSELEVICH, E.

Original Title

Real-Time Study of Surface-Guided Nanowire Growth by In Situ Scanning Electron Microscopy

Type

journal article in Web of Science

Language

English

Original Abstract

Surface-guided growth has proven to be an efficient approach for the production of nanowire arrays with controlled orientations and their large-scale integration into electronic and optoelectronic devices. Much has been learned about the different mechanisms of guided nanowire growth by epitaxy, graphoepitaxy, and artificial epitaxy. A model describing the kinetics of surface-guided nanowire growth has been recently reported Yet, many aspects of the surface-guided growth process remain unclea r due to a lack of its observation in real time. Here we observe how surface-guided nanowires grow in real time by in situ scanning electron microscopy (SEM). Movies of ZnSe surface-guided nanowires growing on periodically faceted substrates of annealed M-plane sapphire clearly show how the nanowires elongate along the substrate nanogrooves while pushing the catalytic Au nanodroplet forward at the ti p of the nanowir e . The movies reveal the timing between competing processes, such as plana r vs nonplana r growth, catalyst-selec t i v e vapor-liquid-solid elongation vs nonselectiv e vapor-solid thickening, and the effect of topographic discontinuities of the substrate on the growth direction, leading to the formation of kinks and loops. Contrary to some observations for nonplana r nanowire growth, plana r nanowires are shown to elongate at a constant rate and not by jumps. A decrease in precursor concentration as it is consumed after long reaction time causes the nanowires to shrink back instead of growing, thus indicating that the process is reversible and takes place near equilibrium . This real-time study of surface-guided growth, enabled by in situ SEM, enables a better understanding of the formation of nanostructures on surfaces.

Keywords

guided growth; planar nanowires; in situ growth; real-time monitoring; ZnSe

Authors

ROTHMAN, A.; BUKVIŠOVÁ, K.; ITZHAK, N. R.; KAPLAN-ASHIRI, I.; KOSSOY, A. E.; SUI, X.; NOVÁK, L.; ŠIKOLA, T.; KOLÍBAL, M.; JOSELEVICH, E.

Released

28. 10. 2022

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

1936-0851

Periodical

ACS Nano

Year of study

16

Number

11

State

United States of America

Pages from

18757

Pages to

18766

Pages count

10

URL

https://pubs.acs.org/doi/10.1021/acsnano.2c07480

BibTex

@article{BUT181631,
  author="ROTHMAN, A. and BUKVIŠOVÁ, K. and ITZHAK, N. R. and KAPLAN-ASHIRI, I. and KOSSOY, A. E. and SUI, X. and NOVÁK, L. and ŠIKOLA, T. and KOLÍBAL, M. and JOSELEVICH, E.",
  title="Real-Time Study of Surface-Guided Nanowire Growth by In Situ Scanning Electron Microscopy",
  journal="ACS Nano",
  year="2022",
  volume="16",
  number="11",
  pages="18757--18766",
  doi="10.1021/acsnano.2c07480",
  issn="1936-0851",
  url="https://pubs.acs.org/doi/10.1021/acsnano.2c07480"
}