Publication detail

Plasmonic Properties of Individual Gallium Nanoparticles

HORÁK, M. ČALKOVSKÝ, V. MACH, J. KŘÁPEK, V. ŠIKOLA, T.

Original Title

Plasmonic Properties of Individual Gallium Nanoparticles

Type

journal article in Web of Science

Language

English

Original Abstract

Gallium is a plasmonic material offering ultraviolet to near-infrared tunability, facile and scalable preparation, and good stability of nanoparticles. In this work, we experimentally demonstrate the link between the shape and size of individual gallium nanoparticles and their optical properties. To this end, we utilize scanning transmission electron microscopy combined with electron energy loss spectroscopy. Lens-shaped gallium nanoparticles with a diameter between 10 and 200 nm were grown directly on a silicon nitride membrane using an effusion cell developed in house that was operated under ultra-high-vacuum conditions. We have experimentally proven that they support localized surface plasmon resonances and their dipole mode can be tuned through their size from the ultraviolet to near-infrared spectral region. The measurements are supported by numerical simulations using realistic particle shapes and sizes. Our results pave the way for future applications of gallium nanoparticles such as hyperspectral absorption of sunlight in energy harvesting or plasmon-enhanced luminescence of ultraviolet emitters.

Keywords

Electron energy loss spectroscopy; Energy; Gallium; Nanoparticles; Plasmonic nanoparticles

Authors

HORÁK, M.; ČALKOVSKÝ, V.; MACH, J.; KŘÁPEK, V.; ŠIKOLA, T.

Released

16. 2. 2023

Publisher

American Chemical Society

Location

WASHINGTON

ISBN

1948-7185

Periodical

J PHYS CHEM LETT

Year of study

14

Number

8

State

United States of America

Pages from

2012

Pages to

2019

Pages count

8

URL

https://pubs.acs.org/doi/10.1021/acs.jpclett.3c00094

Full text in the Digital Library

http://hdl.handle.net/11012/213730

BibTex

@article{BUT183337,
  author="Michal {Horák} and Vojtěch {Čalkovský} and Jindřich {Mach} and Vlastimil {Křápek} and Tomáš {Šikola}",
  title="Plasmonic Properties of Individual Gallium Nanoparticles",
  journal="J PHYS CHEM LETT",
  year="2023",
  volume="14",
  number="8",
  pages="2012--2019",
  doi="10.1021/acs.jpclett.3c00094",
  issn="1948-7185",
  url="https://pubs.acs.org/doi/10.1021/acs.jpclett.3c00094"
}