Publication detail

Creation of Multi-Principal Element Alloy NiCoCr Nanostructures via Nanosecond Laser-Induced Dewetting

MANDAL, S. GUPTA, AK. KONECNA, A. SHIRATO, N. HACHTEL, JA. SACHAN, R.

Original Title

Creation of Multi-Principal Element Alloy NiCoCr Nanostructures via Nanosecond Laser-Induced Dewetting

Type

journal article in Web of Science

Language

English

Original Abstract

The multi-principal element alloy nanoparticles (MPEA NPs), a new class of nanomaterials, present a highly rewarding opportunity to explore new or vastly different functional properties than the traditional mono/bi/multimetallic nanostructures due to their unique characteristics of atomic-level homogeneous mixing of constituent elements in the nanoconfinements. Here, the successful creation of NiCoCr nanoparticles, a well-known MPEA system is reported, using ultrafast nanosecond laser-induced dewetting of alloy thin films. Nanoparticle formation occurs by spontaneously breaking the energetically unstable thin films in a melt state under laser-induced hydrodynamic instability and subsequently accumulating in a droplet shape via surface energy minimization. While NiCoCr alloy shows a stark contrast in physical properties compared to individual metallic constituents, i.e., Ni, Co, and Cr, yet the transient nature of the laser-driven process facilitates a homogeneous distribution of the constituents (Ni, Co, and Cr) in the nanoparticles. Using high-resolution chemical analysis and scanning nanodiffraction, the environmental stability and grain arrangement in the nanoparticles are further investigated. Thermal transport simulations reveal that the ultrashort (approximate to 100 ns) melt-state lifetime of NiCoCr during the dewetting event helps retain the constituent elements in a single-phase solid solution with homogenous distribution and opens the pathway to create the unique MPEA nanoparticles with laser-induced dewetting process. The novel NiCoCr nanoparticles, a well-known multi-principal element alloy system, is created using ultrafast nanosecond laser-induced dewetting of alloy thin films. While NiCoCr alloy shows a stark contrast in physical properties compared to individual metallic constituents, i.e., Ni, Co, and Cr, the transient nature of the laser-driven process facilitates a homogeneous elemental distribution in the nanoparticles. image

Keywords

4D-STEM; multi-principal element alloy nanoparticles; Nanosecond laser-induced dewetting; NiCoCr; X-ray absorption spectroscopy

Authors

MANDAL, S.; GUPTA, AK.; KONECNA, A.; SHIRATO, N.; HACHTEL, JA.; SACHAN, R.

Released

31. 3. 2024

Publisher

WILEY-V C H VERLAG GMBH

Location

WEINHEIM

ISBN

1613-6829

Periodical

Small

Number

2309574

State

Federal Republic of Germany

Pages count

11

URL

https://onlinelibrary.wiley.com/doi/10.1002/smll.202309574

BibTex

@article{BUT188449,
  author="MANDAL, S. and GUPTA, AK. and KONECNA, A. and SHIRATO, N. and HACHTEL, JA. and SACHAN, R.",
  title="Creation of Multi-Principal Element Alloy NiCoCr Nanostructures via Nanosecond Laser-Induced Dewetting",
  journal="Small",
  year="2024",
  number="2309574",
  pages="11",
  doi="10.1002/smll.202309574",
  issn="1613-6829",
  url="https://onlinelibrary.wiley.com/doi/10.1002/smll.202309574"
}